Top Linux Administrator Skills

Below we've compiled a list of the most important skills for a Linux Administrator. We ranked the top skills based on the percentage of Linux Administrator resumes they appeared on. For example, 8.7% of Linux Administrator resumes contained Linux as a skill. Let's find out what skills a Linux Administrator actually needs in order to be successful in the workplace.

The six most common skills found on Linux Administrator resumes in 2020. Read below to see the full list.

1. Linux

high Demand
Here's how Linux is used in Linux Administrator jobs:
  • Provide Linux System Administration, Linux System Security, Project Management and Risk Management in Information Systems.
  • Managed Information security Compliance activities, Linux server security administration & Responsible for Production Servers Deployments.
  • Developed Linux log analysis procedures to detect problems and security intrusions.
  • Participate in installing and configuring of Unix/Linux based Oracle products.
  • Integrated Active Directory authentication for Linux servers and Macintosh workstations.
  • Monitored the servers and Linux scripts regularly and performed troubleshooting steps tested and installed the latest software on server for end-users.
  • Configured Linux servers as clients to satellite server to use it as repository server and used it for quarterly patching.
  • Planned, Scheduled and Implemented on Linux boxes as part of proactive maintenance and Secure Shell (SSH) Implementation.
  • Installed Pre-Execution environment boot and Kick start method on multiple servers, remote installation of Linux using PXE boot.
  • Design and implemented update to stencils of Puppet Enterprise Linux configuration management system for new and old server build.
  • Assisted clients with configuring mail, DNS, database, and web servers (Apache) on Linux platforms.
  • Participated in migration cut over meetings, build and deploy Linux hardware Nodes to host several KVM templates.
  • Set up and maintenance Linux virtual desktop (VDI) environment for design user to work chip designing.
  • Established network security using Linux Firewall and troubleshoot problems relating to boot loaders (GRUB, LILO).
  • Implemented and managed Oracle 10g RAC and 11g RAC databases on UNIX, LINUX and Windows platforms.
  • Performed on Mirroring of root disks using Sun Volume Manager;hardware raid for Linux systems.
  • Planned, scheduled and Implemented OS patches on Linux boxes as a part of proactive maintenance.
  • Experience in creating physical volume, logical volume, volume groups using LVM's in Linux.
  • Monitored the logs from Apache, Tomcat and other services that running in a Linux Box.
  • Migrated different applications like SAP & Databases like Oracle and Oracle RAC from HPUX to Linux.

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2. Web Servers

high Demand
Here's how Web Servers is used in Linux Administrator jobs:
  • Install and configure Web servers, file servers, firewalls, and directory services with ability to diagnose basic configuration bottleneck.
  • Worked on solving issue related to LAMP stack web servers, both shared and VPS.
  • Involved in tuning the parameters of Web servers to improve the performance.
  • Worked on streaming the data into HDFS from web servers using flume.
  • Managed web servers in Linux, FreeBSD and Windows environments.
  • Build, configured and managed Web servers using Apache environment.
  • Deploy, upgrade and maintain application and web servers.
  • Configured services for Web servers and Development platforms.
  • Assisted in addition of new web servers.
  • Set up and configure Apache web servers.
  • Installed and administered Apache web servers.
  • Maintained Samba, PXE, DHCP, and Apache Linux Web servers.
  • Installed and configured web servers like iPlanet 6.x and Apache Web Server 1.3.x for different applications.
  • Worked on cron in Linux servers for managing the logs of the web servers.
  • Performed Network stack tuning for apache web servers.
  • Experience in Data Center Migration Configured and monitored Apache web servers with Weblogic proxy plugins.
  • Performed OS, Network tunings on the Apache and Nginx web servers.
  • Worked on setting up Splunk to capture and analyse data from various layers Load Balancers, Web servers and application servers.
  • Configured several load balanced web servers using nix based load balancer like Amazons elastic load balancer.

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3. File System

high Demand
Here's how File System is used in Linux Administrator jobs:
  • Identified current file system usage and availability.
  • Convert the File systems ext3 to ext4 and understand the uses of Ext4 file system in Linux with kernel version 2.6.28.functionally.
  • File system house keeping activities such as log files house keeping, increasing file systems if there is any data growth.
  • Configured and Administrated users, groups, Creation/Deletion, Monitoring Mail Queues, File systems, network printer & device drivers.
  • Worked with File System Issues on various production VM's, Work on Script servers related alerts in monitoring tool.
  • Worked in ZFS and QFS and fixed the problems occurred, set the quota and reservations for such file systems.
  • Solved tickets related issues, User creation, Accesses, Permissions, file system creations and enable and removing.
  • Experience on handling File system, Disk management & Boot PROM and Managing the problems associated With file system.
  • Experience in managing and expanding file systems, administer and provision storage on Unix and Linux servers.
  • File system and Mounting, Monitor user activities and system usage, Install Printer and Samba server.
  • Created, mounted and maintained file systems to ensure access to system, applications and user data.
  • Used Network Information Service (NIS) and Network File System (NFS) among the systems.
  • Installed software, applied patches, managed file systems, and monitored performance of Linux Systems.
  • Worked on NFS file systems and shared them to clients and Managed Network Time Protocol Server.
  • Created new file systems on Linux Machine, managing and checking data Consistency of file systems.
  • Created file systems as per user requirements and extended logical volumes on Red Hat Enterprise Linux.
  • Engineered, deployed and managed Red Hat Clusters with GFS2 file systems for use with MarkLogic.
  • Experience in migrating UFS root file system to ZFS root file system using Live Upgrade.
  • Experienced in tasks like managing User Accounts and Groups, managing Disks and File systems.
  • Experience in writing the automatic scripts for monitoring the file systems, key MAPR services.

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4. Veritas

high Demand
Here's how Veritas is used in Linux Administrator jobs:
  • Support high availability environments using VERITAS Clustering and Replication services.
  • Installed and configured VERITAS Volume Manager which included converting disks to VM disks, creation of disk groups, volume groups.
  • Used VERITAS and Native volume managers to configure storage volumes and used LVM based migrations to migrate between storage arrays.
  • Monitored and trouble-shoot backup for servers and SAN using the tools VERITAS Backup Exec, VERITAS Net Backup.
  • Used VERITAS Cluster Server (VCS) and VERITAS Foundation Suite to provide high availability and storage management.
  • Experience in implementing High Availability Solutions using VERITAS Cluster, HP Service Guard and RedHat Cluster Server.
  • Installed and configured VERITAS Cluster Server 4.x; manually setup application related policies / configurations as requested.
  • Created, administered & managed Logical Volume Manager, VERITAS Volume Manager, and NFS& CIFS.
  • Experience in Upgrading, Installation and configuration of VERITAS products like Storage Foundation Suite and Cluster software.
  • Collaborated with backup team to maintain and recover enterprise wide backup servers using VERITAS Net Backup.
  • Implemented changes like Patching, OS upgrade, VERITAS upgrade, modifying VCS and Zones configuration.
  • Worked with installation and configuration of volume management using VERITAS Volume Manager, VxFS file system.
  • Managed VERITAS (VCS) and (CFS) clusters with vast range of critical applications.
  • Involved in installation & configuration of volume management using VERITAS Volume Manager, VxFS file system.
  • Supported VERITAS Cluster 5/6 environment with 2 & 4 nodes and running Database and SAP applications.
  • Configured RAID Levels on OS drives with Sun Solstice Disk suite and VERITAS Volume Manager.
  • Worked on Volume management, Disk management, software RAID solutions using VERITAS volume manager.
  • Manage patching, security and reliability of Disaster Recovery backup using VERITAS's NetBackup 6.5..
  • Redefined volume groups, migrating, mirroring logical volume using VERITAS VOLUME MANAGER, SVM.
  • Performed tasks related to managing Disk Storage and file system administration using VERITAS volume manager.

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5. Red Hat

high Demand
Here's how Red Hat is used in Linux Administrator jobs:
  • Suds administration and Red Hat Linux package administration.
  • Modernized security policy for Red Hat servers
  • Administered and maintained Red Hat 4.x/5.x, troubleshoot hardware, operating system, applications & network problems, and performance issues.
  • Monitored and administrating of Red Hat Linux on Enterprise class servers for operating systems, patches, packages, hardware drivers.
  • Install, configure, and troubleshoot enterprise-wide Apache web servers and Tomcat application containers in a large Red Hat Linux/CentOS environment.
  • Experience as a System Administrator, Support of various applications on Red Hat Enterprise Linux/Cent OS, Ubuntu, Windows.
  • Build and configuration of Red Hat Clusters: 'classic' HA and Global File System (GFS2) Clusters.
  • Experienced as Red Hat Enterprise Linux administrator and migrated 29 games from physical to virtual (P2V) environment.
  • Configure, Administer and Troubleshoot Red Hat Enterprise Linux 5.x and 6.3 Application and Database servers in an environment.
  • Administered Red Hat Linux servers for several functions including managing Apache/Tomcat server, mail server, My-SQL database.
  • Involved in installation, configuration and preparation of technical design specifications of RED HatLinux and IBM AIX Servers.
  • Install configured and implemented a network with Red Hat Enterprise Linux Servers to support web and data-mining operations.
  • Defined, documented and implemented hardened, standardized operating system images based on Red Hat Linux Enterprise 4,5,6.
  • Configured system group users to allow access to software channels for software installations via Red Hat Satellite Server.
  • Installed Red Hat Linux using KickStart and applying security polices hardening the server based on the company policies.
  • Installed/upgraded and configured Dell servers and workstations with Red Hat Linux at the Naval Surface Warfare Center.
  • Created users, mange user permissions, maintain user & File System quota on Red hat Linux.
  • Updated the systems using Red Hat Enterprise Network (RHN), managing and monitoring through RHN.
  • Build, Configure, upgrade and Install Red Hat 5/6/7, OS on physical and virtual servers.
  • Assembled Puppet Master, Agent, and Database servers on multiple Red Hat Enterprise Linux Platforms.

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6. NFS

high Demand
Here's how NFS is used in Linux Administrator jobs:
  • Installed/Configured/Maintained/Administrated the network servers DNS, NFS and application servers Apache and Samba server.
  • Diagnosed and resolved problems associated with DNS, DHCP, NFS, and Apache and Managing upgrade of multiple Linux servers.
  • Involved in creating volumes on raid groups and aggregates and sharing to Windows and UNIX servers using CIFS & NFS.
  • Analyzed network traffic using network protocols TCP/IP, UDP, ARP/RARP, DHCP and NFS using open source software.
  • Configure and maintain NFS Servers for both media and data sharing between servers and resolved any shared server issues.
  • Experienced in Implementing file sharing on the network by configuring NFS/SAMBA on the system to share essential resources.
  • Solved system and network problems using various diagnostics and protocols including, NFS, TCP/IP, and DNS.
  • Installed, configured the several services like NFS or FTP or Samba Servers depending on the requirement.
  • Worked on configuring, maintaining, and monitoring the File Servers like NFS, FTP and Samba.
  • Samba & NFS file Server for sharing files on multiple clients which included windows platform as well.
  • Moved all the home directories of the users from the control work station to NFS share.
  • Experience in setting up and tuning NFS file service and setting up NIS servers and clients.
  • Implemented DRBD, NFS for Name Node Replication to avoid single point of failure.
  • Configured and Administered the NFS, NIS, DNS, Samba and Mail Servers.
  • Experience with installation and maintenance of NFS, FTP and Samba for file sharing.
  • Implemented file sharing on network by configuring NFS on system to share essential resources.
  • Configured NIS, NFS and DNS environment & handled issues regarding Samba Servers.
  • Configure DNS, NFS, FTP, remote access, and security management.
  • Configured and administered NFS, NIS, Auto mounts and Network Printers environments.
  • Experienced in installing and managing NFS, FTP and Samba for file sharing.

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7. DNS

high Demand
Here's how DNS is used in Linux Administrator jobs:
  • Redesign and implement DNS infrastructure to reduce complexity, improve performance, simplify administration and facilitate deployment automation.
  • Controlled, maintained and supervised DNS server located hosting facility.
  • Developed Directory services for Windows DNS using Active Directory, also used to provide Security access to users via Microsoft Servers.
  • Monitored system performance, tune-up kernel parameter, adding /removing /administering hosts, users, disks on DNS / NIS domain.
  • Earned certification of proficiency in configuring Linux Mail Servers using Apache, DNS, Send Mail and Dovecot.
  • Installed, configured and managed Active directory, DHCP, DNS, Windows 2008 and 2008 R2 servers.
  • Performed system-monitoring tune up kernel parameter, adding/removing hosts, users, disks on DNS/NIS domain.
  • Supported, troubleshoot and Configured TCP/IP, WINS, DNS, DHCP, Active Directory.
  • Configured and maintained Windows 2000 Server that runs DNS, DHCP and active directory services.
  • Installed, configured and maintained mission critical systems including DNS, DHCP, TCP/IP.
  • Assisted in installation and Configuration of SSH, TELNET, DHCP, DNS.
  • Maintain Linux systems serving as firewall, mail server, DHCP and DNS server
  • Diagnosed and resolved problems associated with DNS, DHCP and network connectivity.
  • Installed, configured and maintained DNS systems using Route53 (AWS).
  • Manage and maintain Bind DNS Master and Slave servers and DHCP servers.
  • Updated DNS configuration based on the new servers that are rolled out.
  • Experienced in performing the administration of the DNS and zone configuration.
  • Create and configure DNS records for internal and external name resolution.
  • Managed and upgraded UNIX's server services such as Bind DNS.
  • Maintained external DNS for all domains (about 250).

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8. Disk

high Demand
Here's how Disk is used in Linux Administrator jobs:
  • Worked on volume management, disk management using logical volume manager.
  • Planed, coordinated, and implemented software and hardware upgrade, such as OS upgrading, adding disk arrays, etc.
  • Configured Elastic Block store as Volumes for each EC2 instance to increase available disk space on each server instance.
  • Installed NIM, set up NIM servers, clients, defined the resources, alternate disk migration with NIM.
  • Experience in Configuring and Managing Virtual Disks, Disk Mirrors & RAID 0, 1 & 5 Levels.
  • Worked on A1000 StorEdge storage disk arrays and configured in RAID 0, 1 and 5 levels.
  • Create new Logical Volume and Extend Logical Volume, Disk Partitioning, creating RAID 5.
  • Create disk quota, assign file permission, user access control on file and directory.
  • Handled TASK activities after Motherboard replacement, before and after hard disk, memory replacement.
  • Shared folders and assigned permissions to those shares, assigning and managing disk quotas.
  • Implement MS Clustering in Virtual environment with shared common disks and resource groups.
  • Administered, monitored, and managed disk space and data security on servers.
  • Create hard disk image cloning and restore the same for fail over purpose.
  • Experience in Configuring and Managing Virtual Disks, Disk Mirrors&RAID Levels.
  • Experience with Technology level upgrades, Service pack upgrades using alternate disk method.
  • Mirrored root disks on all the servers by using Linux volume manager.
  • Replaced Hot-Swappable Components like Power Supply, FAN, and Internal Disk.
  • Archived and backup files and directories to better utilized available disk space.
  • Implemented DES (Disk Encryption System) in all Mac books.
  • Red Hat Linux backup/restore with tar including disk partitioning and formatting.

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9. Solaris

high Demand
Here's how Solaris is used in Linux Administrator jobs:
  • Experience in installation, configuration, tuning, security, backup, recovery and upgrades of LINUX and SOLARIS.
  • Provided the support to production and various Lab environments on a Solaris2.x, SUN OS, and Network.
  • Installed and maintained SUN SOLARIS, and Windows NT servers.
  • Design and test a Disaster Recovery solution for all business-critical applications and systems, including Linux and Solaris systems.
  • Authorized Solaris users/groups to access various applications and troubleshot various user problems using management tools.
  • Created Projects on Solaris 10 operating system for installation of applications.
  • Supported and administered Solaris systems and Logical Zones.
  • Handled Solaris to Linux migration and hardware consolidation.
  • Participated in Solaris 10 upgrade/live upgrade.
  • Managed Solaris web and application servers.
  • Helped in the Architectural Design for the Implementation of Single Sign On (SSO) in the Linux and Solaris Environment.
  • Implemented Security Hardening per company policy using Solaris 10 features like TCP Wrappers, Sticky bit, RBAC and ACL.
  • Performed system level preventative maintenance on Linux and Windows based servers; Red Hat, Solaris and Windows Server.
  • Created and managed swap memory space on both Red Hat Linux and Solaris platform, as requested - dynamically.
  • Utilized Satellite Server for monitoring and patching, to update the packages in Red Hat Linux and Solaris servers.
  • Installed, configured and managed Oracle Real Application Cluster (RAC) in Solaris, HP-UX and Linux servers.
  • Installed and configured Solaris 10 servers with zones and containers on SUN M5000&T2000 servers with SUN ZFS.
  • Involved in Installing, Configuring and Upgrading of Red Hat Linux AS 4/5, Solaris 9/10 operating systems.
  • Performed Solaris kernel patching (Parallel) and firmware up gradations on x 86 / SPARC environment.
  • Installed, configured and maintained RedHat 3, 4, Solaris 8,9,10 on Sun Enterprise servers.

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10. Rhel

high Demand
Here's how Rhel is used in Linux Administrator jobs:
  • Automated processes and installed custom build and application specific RHEL operating systems.
  • Configured RHEL/OEL local repository to patch Linux systems locally.
  • Modified/Migrated/Supported GIC adapters/routers which run in RHEL 5.11 environment.
  • Provision new servers with Ubuntu, CentOS/RHEL, Debian, FreeBSD, OpenBSD and other operating systems according to customer specifications.
  • Created users, manage user permissions, maintain User & File System quota on RHEL Bash shell-scripts to automate routine activities.
  • Worked on the installation, configuration, and maintenance and troubleshooting of RHEL 5.x, 6.x, Ubuntu, SUSE servers.
  • Deploy and Configure Red Hat Satellite Server 5.4, Including creating maintaining any customized kick start configuration channels to deploy RHEL.
  • Deployed a LAMP server through CLI, and migrated the MySQL database and PHP code from Windows Server 2008 to RHEL.
  • Installed and configured new RHEL server builds and third party applications (layer2, layer3) via ISO and KickStart.
  • Expanded functionality and updated existing VOIP Linux (RHEL, Debian, SUSE, Ubuntu, CentOS) systems.
  • Experience in Installation, Configuration, Backup, Recovery, Maintenance, Support of RHEL, Ubuntu and Windows.
  • Experience in RHEL Provisioning, Upgrades, Patching, Configuration and Performance Tuning in Linux environment using satellite server.
  • Use of Logical Volume Manager (LVM), creating Volume Groups, Logical volumes in RHEL and CentOS.
  • Support RHEL V 5.6 servers running in production messaging platform for large Oracle 10g database and SAP basis applications.
  • Patch Management, Package Installation/Upgrades and Kernel upgrades Environment: RHEL 4, Windows XP, SCO UNIX.
  • Install, configure, tuning, security, backup, recovery and upgrades of RHEL 5.5 and higher.
  • Worked mainly on RHEL4/5/6, OEL 5/6 servers supporting all the OS administration, application and hardware issues.
  • Secured RHEL by working with users, groups, and permissions, used authentication modules and processes.
  • Deploy, configure and setup RHEL 3/4/5, OEL on HP and DELL servers locally & remotely.
  • Performed the automation using RHEL 7, Chef Configuration management and managing the infrastructure environment with Puppet.

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11. Database

high Demand
Here's how Database is used in Linux Administrator jobs:
  • Administer database security including adding/removing users, auditing, and troubleshooting security related issues, provide internal management services.
  • Coordinate build schedules between development teams, Database Administrators and Network Operations while developing and improving build communication channels.
  • Worked with database administrator, Storage Administrator and application team for maintaining /monitoring daily activities.
  • Performed kernel and database configuration optimization such that it limits I/O resource utilization on disks.
  • Integrated monitoring, auditing, and alert systems for databases with existing monitoring infrastructure.
  • General troubleshooting of operating systems, hardware, database and application problems.
  • Developed python scripts to automate routine database maintenance and account provisioning tasks.
  • Performed Tuning of kernel parameters based on the application/database requirement.
  • Maintain database-driven Web interfaces for rapid, real-time information sharing.
  • Monitored database maintenance and provides appropriate recommendations, when required.
  • Deployed and secured PostgreSQL databases for development and production environments.
  • Installed and Configured MySQL database server with master-slave replication.
  • Perform problem determination and resolution for database related problems.
  • Created and maintained database and application recovery related documentation.
  • Tuned Kernel parameters based on application and database requirements.
  • Estimated Database Capacity planning through warehouse load projections.
  • Installed and maintained PostgreSQL database in production environment.
  • Provided authentication to users for Oracle databases.
  • Administered and monitored MySQL database servers.
  • Performed database tuning and performance monitoring.

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12. LVM

high Demand
Here's how LVM is used in Linux Administrator jobs:
  • Configured LVM (Logical Volume Manager) to manage volume group, logical and physical partitions and importing new physical volumes.
  • Added and expanded new storage to existing or new system using LVM, VxVM, VxFS and SVM.
  • Used LVM for dynamically extending and reducing partition sizes as and when the need arose.
  • Experience in creating Disk Partitions, Logical Volume Manager (LVM) and RAID.
  • Initiate LVM to monitor, pin point hardware error and replace bad hard drives.
  • Performed Disk management using LVM (Logical Volume Manager).
  • Managed and configured LVM (Logical Volume Manager).
  • Increase the size of LVM partition on Linux.
  • Worked on LVM and RAID in RedHat Linux.
  • Performed volume management using LVM on Linux.
  • Configured and managed resources using LVM.
  • Manage systems storage using LVM.
  • Increase, decrease, and remove Disk Space (LVM) and mount points in all LINUX servers.
  • Worked with various types of filesystems, and volume management solutions: ZFS, LVM, VxVM, and SVM.
  • Installed and configured volume management via RAID hardware/software and logical volume management (LVM) for data backup and storage.
  • Worked on activity like power path up gradation, multipath to power path migration, storage migration using LVM.
  • Implemented LVMs and Raid level concepts in the production environment and added LUN space to the existing Linux systems.
  • Maintained LVM, VxVM Taking backup using tar and recovering during the data loss.
  • Configured and Troubleshooting for SVM/LVM for Solaris and Red Hat Enterprise Linux.
  • Created and deployed LVM, resizing the logical volume and volume group.

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13. Vmware

high Demand
Here's how Vmware is used in Linux Administrator jobs:
  • Manage Virtual servers on VMwareESXServer3.0/3.5.
  • Experience with administering and consolidating Windows servers in VMWare ESX environments.
  • Monitor VMware environments to resolve inconsistencies and capacity constraints.
  • Manage VMware Infrastructure clusters on Production Test/Development environments.
  • Work on installation of VMware migration of VM's and data storage, patch management, snapshot and template and clone.
  • Design, Implementation, Testing and Deployment of VMware Infrastructure and Troubleshoot ESX Server and Virtual machine related performance issues.
  • Installed and configured SRM 5.0 and created Protection Groups and Recovery Plans using Site Recovery Manager 5.0 usingVMware best practices.
  • Customized layer 2 and layer 3 networking between VMware, Networking components and storage high availability and maximum performance.
  • Deployed various Red Hat Enterprise Linux Server virtual Builds using a combination of VMware Templates and PowerCli.
  • Worked with the VMWARE team and ensured all the VMs are working without any performance issues.
  • Worked on Cloud Foundry which is developed by VMware which also supports full life cycle.
  • Create custom roles and assign permissions for different types of users in VMware environment.
  • Worked on Cisco USC, virtual infra on VMware, Storage migration and installations.
  • Worked on applications and end users using VMware Horizon (with view).
  • Build virtual Linux server and Windows server using VMware when needed for testing.
  • Worked on Upgrades, Patching, Configuration and Performance Tuning and VMware environments.
  • Created scripts to automate various task for Linux, VMware and windows servers.
  • Helped to design and deploy a CloudStack and VMWare based private cloud.
  • Installed VMware 3.5 and managing set of ESX server through VCS.
  • Perform new builds and decommissions of both physical and VMware servers.

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14. NIS

high Demand
Here's how NIS is used in Linux Administrator jobs:
  • Performed regular day-to-day system administrative tasks including User Management, Backup, Network Management, and Software Management including Documentation etc.
  • Installed and maintained all server hardware and software systems and administered all server performance and ensured availability for same.
  • Experience in providing day-to-day user administration like adding/deleting users and managing user's queries and maintained Servers.
  • Mentored other systems administrators in engineering, installation, configuration, testing and administration of Linux servers.
  • Inventoried Apache web server/LAMP cluster software configurations and performed additional various Linux System Administration duties as required.
  • Experienced in administrative skills including monitoring, capacity planning and disaster recovery and performance improvement skills.
  • Deploy Windows 2003 Server for remote Terminal services administration to support on-call remote support administrators.
  • Provided system administration services like backup, monitoring, installation, configuration and user permissions.
  • Performed user administration: add/delete/modify users & user groups and respective privileges and resource.
  • Provided system administration, configuration management, and operational support for various technical environments.
  • Experience working with IT Security team to handle responsibility of Firewall administration.
  • Performed processes administration and management like monitoring, start/stop/kill various processes/sub processes.
  • Experience in performing System Administration and performance monitoring Tasks on Linux servers.
  • Provided fellow system administrators and support representatives with technical support and guidance.
  • Documented, developed and implemented daily server administration standards and procedures.
  • Involved in Implementing and Administrating enterprise level data backup and recovery.
  • Perform security administration and monitored job processes using associated commands.
  • Experience in administering and maintaining Linux servers in production environments.
  • Documented and enabled HMC remote administration for trusted networks.
  • Performed Continuous Integration, Building and administrating using Jenkins.

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15. Unix

average Demand
Here's how Unix is used in Linux Administrator jobs:
  • Provided ongoing management, performance-tuning and Tier 3 support for approximately 50 Linux and Unix systems-users.
  • Support for Linux/Unix system administration, operational support and problem resolution for server systems.
  • Performed UNIX security audits and implementing security audits.
  • Support hardware/software for Linux/Unix/Windows for campus research labs.
  • Experience testing server-based applications on UNIX/Linux.
  • Indented and executed scripts and other UNIX utilities; create, tune, and optimize stored procedures and DTS packages.
  • Managed and provided support to all UNIX servers and RedHat Linux OS that runs Oracle databases and NetBackup enterprise.
  • Performed Development, QA, and Prod UNIX system LAN ID requests, troubleshooting for system alerts and incidents.
  • Provided 24x7 on call and remote support for UNIX Production Problems and responding to users tickets from Remedy.
  • Monitored, troubleshooting, supported and fixed operating system and hardware problems on several versions of UNIX systems.
  • Imaged servers (Linux/Unix and Window), client computers and remotely manage their applications after deployment.
  • Managed users and group in a PCI/SOX compliant account management system for UNIX and Unix-like operating systems.
  • Involved in data load using PL/SQL and SQL Loader calling Unix scripts to download and manipulate files.
  • Ensured proper communication with Application team, Storage team, Backup team and UNIX-L2 team.
  • Installed, managed and implemented various java (JDK7) applications on multiple UNIX platforms.
  • Provide On-Call support on break/fix issues for all Unix Servers in the Data Center.
  • Provide 24 X 7 on-call UNIX and Linux support on a rotating schedule basis.
  • Assisted Oracle DBA in writing scripts for automating Oracle tasks on the UNIX Server.
  • Performed package and patches management and debugging in different flavors of UNIX & Linux.
  • Installed and configured SiteMinder Policy Server (5.5/ 6.0) on UNIX/Windows environments.

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16. OS

average Demand
Here's how OS is used in Linux Administrator jobs:
  • Performed OS Installation/configuration/Upgrades/Patches and migrations.
  • Utilized Retina to identify potential vulnerabilities' and used those findings to implement patching guidance and implementation.
  • Worked closely with Firewall team to establish connectivity between UPS external servers and trading partner/Client servers.
  • Received hand written recommendations and commendations within training period and almost every month of employment after.
  • Provide support to Application development/support teams integrating applications into Linux OS platform.
  • Distributed OS and application packages using Software management tools.
  • Redesign proposed distributed virtual NX Server cluster.
  • Performed post-system-restore checks on system-wide functionality.
  • Planned and implemented migrations from lower end to higher end in OS level and Hardware level in HP-UX and Linux servers.
  • Consulted with support teams to jointly provide the best possible services and solutions through effective requirements gathering, expectations and management.
  • Integrated all required software and resolved all issues across various technologies and design require enterprise servers and provided back up support.
  • Implement a custom logging subsystem across multiple languages and machines, and create a web interface to view the log info.
  • Performed system-monitoring with the help of tools like TOPAS, SAR, VMSTAT, IOSTAT to report systems usage and performance.
  • Shared files between Linux boxes and windows using the WinSCP, a secure FTP, SCP client for Microsoft Windows.
  • Used GitHub enterprise as the repository to distributed version control and source code management (SCM) functionality of Git.
  • Performed OS upgrades and Patch loading as and when required and Backed up and restoring files across the network.
  • Configured volume manager, backup groups, logical hosts, and data services, and bringing up the cluster.
  • Automated weekly releases with Maven scripting for compiling Java Code, Debugging and placing Build into Maven repository.
  • Monitored and maintained licensing using LUM, FlexLM & other utilities for all engineering software applications across servers.
  • Worked on Chassis installation of Cisco USC blade servers 6500 series then Installing OS in them through KVM.

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17. Kickstart

average Demand
Here's how Kickstart is used in Linux Administrator jobs:
  • Involved in building physical servers using KICKSTART PXE Boot and JUMPSTART.
  • Implemented Kickstart in RedHat environments.
  • Assigned the Server Build Tasks, DHCP Management, Kickstart Modifications and OS image Management to each team member.
  • Experience in Installing, upgrading and configuring RedHat Linux 5 and 6 using Kickstart Servers and Interactive Installation.
  • Experience in Setting up and configuring Install Server, Configuration Server and Boot Server for Kickstart process.
  • Used Kickstart for network installation of OS, cloning, and full automation using FTP/SFTP.
  • Configured kickstart server and updating and applying patches to the servers using proxy server.
  • Created Kickstart scripts as per the user requirement and performed few test deployments.
  • Automated the installs using Kickstart and building post install scripts using Shell scripting.
  • Used Kickstart for automatic Linux installs, software distribution, and production deployment.
  • Worked on script conversion from kickstart to puppet manifest for a while.
  • Set up and configure kickstart server, to create multiple Linux servers.
  • Automated system provisioning with spacewalk (kickstart) to efficiently build out servers
  • Experience installing Linux servers using Kickstart and Cloning on ESX servers.
  • Mass Build of Linux servers using Kickstart and interactive installation methods.
  • Experience in installation of CentOS on multiple clients using Kickstart.
  • Support of server build process (kickstart, cobbler).
  • Installed operating system on multiple machines using Kickstart.
  • Experience in Installing KVM packages with Kickstart files.
  • Perform server builds using Satellite and kickstart.

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18. Bash

average Demand
Here's how Bash is used in Linux Administrator jobs:
  • Developed bash scripts to automate system/build processing.
  • Experience in writing Shell scripts using bash, for process automation of databases, applications, backup and scheduling.
  • Utilized BASH shell scripts for automation of most System Administration tasks, including auto-install of Linux and application software/services.
  • Created Bash, shell & python scripts for various Systems Administration tasks to automate repeated processes.
  • Created of bash menu system for backing up and restoring websites for Wayne State University.
  • Develop Shell scripts, Bash for regular and periodic jobs and for system administrator jobs.
  • Developed numerous Tools in bash and python to automate the build and release processes.
  • Utilized bash, Python and KSH shell scripting to automate daily system administration tasks.
  • Experienced in scripting for automation and monitoring using Shell, Bash and KSH.
  • Configured and maintained NIS and DNS database and wrote Bash shell scripts.
  • Developed several scripts in bash and KSH to automate the manual process.
  • Develop Shell scripts (bash) for automating the batch jobs.
  • Created Bash shell scripts to monitor system resources and system maintenance.
  • Modify and create bash shell scripts to set automated backup schedule.
  • Automated processes using bash scripts to support systems as needed.
  • Experience in Shell scripting bash to automate system Administration jobs.
  • Created Bash Shell Scripts to automate routine server maintenance jobs.
  • Advanced composition of bash shell scripts for job automation.
  • Worked with BASH, PYTHON scripts for automating Tasks.
  • Worked with bash shell scripting for system automation.

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19. Virtual Machines

average Demand
Here's how Virtual Machines is used in Linux Administrator jobs:
  • Perform cold-migration of Virtual Machines from one host to another and manage resource load on the host groups under the Centers.
  • Installed Linux operating system on the virtual machines to make a Linux environment for creating the file sharing servers.
  • Assisted to configure and deploy all virtual machines and installed and provided backup to all configuration procedures.
  • Install, troubleshoot and maintain servers and other systems (dedicated appliances, Virtual Machines etc).
  • Created, installed, and configured Virtual Machines for user interaction and software support teams.
  • Installed Linux operating system on virtual machines in order to configure the mail server.
  • Designed, Deployed, and administrated an infrastructure to deploy KVM virtual machines.
  • Configured and managed virtual machines and installed VM Tools into VM's.
  • Configure virtual machines to run Docker and other software needed by developers.
  • Installed Linux OS, and configured required network on the virtual machines.
  • Worked on running the virtual machines from one server to other.
  • Created virtual machines and configured them to use resources efficiently.
  • Deployed Virtual Machines and use Clones, Snapshots, templates.
  • Managed around 5000+ physical servers and around 20000 Virtual machines.
  • Build, configure and deploy Virtual machines and templates.
  • Worked with clones and snapshots of Virtual Machines.
  • Created and cloned Linux Virtual Machines.
  • Created virtual machines via Hyper-V Manager.
  • Migrated virtual machines between the servers.
  • Created New Virtual Machines, cloning VM, DRS, and Snapshots.

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20. SAN

average Demand
Here's how SAN is used in Linux Administrator jobs:
  • Performed day-to-day operational support of the SAN environment.
  • Perform sanity testing of applications.
  • Led project to migrate all production file shares from NT, W2K, and IRIX servers to new SAN environment.
  • Inventory SAN storage and verify FRU, speed, and capacity for proper functioning of SAN and identify any discrepancies.
  • Worked with Linux, SAN, Oracle Database, and Network teams to ensure the smooth relocation of the servers.
  • Experience working with HP LVM, creating physical, volume groups, logical volumes both physical and SAN disks.
  • Saved the company thousands of dollars in penalty fees by discovering and fixing an error in the existing system.
  • Support for 3-tier Amazon Web Services cloud application including the following: Apache, Tomcat, and Cassandra DB.
  • Experience in setup Storage Area Network (SAN) and NAS and file system backup and restore.
  • Performed the configuration and administration of DNS, NFS, SAN, NIS and database files.
  • Involved in Relocation and migration of Linux server and SAN storage between data centers and testing.
  • Install, configure, support and maintain (SAN) storage area networks and associated technology.
  • Experience working in NFS/NAS, Storage Area Networks (SAN), SSA disk storage environment.
  • Installed and configured HBA's on SAN connected servers, performed firmware and driver management.
  • Work closely with SAN admins to configure new disks in clustered and standalone Linux environments.
  • Implemented and maintained data replication for both SAN and NAS storage to meet requirements.
  • Performed SAN migration on 75+ database server from DS8300 to Net App disks storage.
  • Integrated Kafka with Flume in sand box Environment using Kafka source and Kafka sink.
  • Created different RAID level configuration and managed SAN storage for application and database server.
  • Create LUN's using SAN Volume Controller in V7000 and XIV storage subsystems.

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21. Web Application

average Demand
Here's how Web Application is used in Linux Administrator jobs:
  • Managed prominent level web applications and worked with windows and Linux based administrations in physical/virtual environments.
  • Developed and programmed a web application project.
  • Deployed Enterprise Application Archive (EAR), Web Application Archive (WAR), staging and production environments.
  • Developed modules, manifests, classes to deploy database servers, J2EE web applications, web servers.
  • Created and worked on build scripts for Maven for building J2EE web applications.
  • Worked on deploying web applications and maintained application servers and checked system health.
  • Optimized business processes by developing ASP.NET web applications to streamline & automate solutions.
  • Create LAMP based game metrics web application for real-time viewing of user activity.
  • Developed and implemented the software release management for their release of web applications.
  • Maintain and enhance existing Web applications and all internal systems are integrated.
  • Used IBM Web Sphere as web application server for deploying artifacts.
  • Major part of support is dedicated to Web Application Environment.
  • Experienced in configure Apache and web Applications.
  • Hosted Enterprise Web Applications using AWS.
  • Supported for Java based web applications.
  • Developed web applications using AWS.
  • Installed and Configured web application servers and assigned a needed ports based on the organization requirement.
  • Worked on Apache Webserver administration and supported various web applications.
  • Deployed Java applications into web application servers like weblogic.
  • Integrated with MsBuild tool for deploying .NET based web applications to IIS server.

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22. Setup

average Demand
Here's how Setup is used in Linux Administrator jobs:
  • Provided support for server and work station upgrades, backup and disaster recovery monitoring user account setup and security administration.
  • Verify Load balance setup is correctly configured and performs desired balancing.
  • Performed setup of Clustered environment with Web Logic Application Server.
  • Experience in setup/configuration of network devices.
  • Experience in Migration of HACMP 4.3.1, 4.5 to HACMP 5.1 using Node-by-Node migration without changing the cluster setup.
  • Worked as User Administration setup, maintaining account, monitor system performance, performed performance tuning and troubleshooting.
  • Create and setup Various Users, group accounts, customize user initialization files and Control files access.
  • Completed all projects on time and accurately from server setups and deployments to new user setups.
  • Watch and monitor the efficiency of server/desktop systems that setup Ganglia to see clusters' performance.
  • Installed Jenkins plugins for GIT Repository, Setup SCM Polling for Immediate Build with Maven.
  • Experience in working with DB team on setup of MY SQL server with basic validations.
  • Maintained servers which were already installed and setup custom builds and applications on their networks.
  • Created and Managed Users / Group accounts and setup a user's work environment.
  • Provided support for branch offices using PC-Anywhere & Manage Setup network printers / copiers.
  • Migrated HACMP 4.3.1/4.5 to HACMP 5.1 using Node-by-Node migration without changing the cluster setup.
  • Installed NIS, DNS, and mail setup environment as per the client requirement.
  • Monitor power issues, setup and configure APC power-equipment for Data Center server cabinets.
  • Worked on Corporate Send mail and DNS setup for multiple domain scenarios.
  • Create and setup automated nightly build environment for java projects using Ant.
  • Work on PowerHA (HACMP) setup configuration and maintenance.

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23. Tomcat

average Demand
Here's how Tomcat is used in Linux Administrator jobs:
  • Coordinated with application team in installation, configuration and troubleshoot issues with Tomcat server.
  • Work collaboratively with Application Developers to support and maintain Apache and Tomcat web/application servers.
  • Involved in configuration and troubleshooting problems related to tomcat web server.
  • Configure Web Logic and APACHE and TOMCAT Server with JAVA Application tools on Red Hat and Hp UNIX servers environment.
  • Installed and configured SAMBA, Apache / Tomcat web server and VNC (Virtual Network Computing) server/client.
  • Created multiple instances of Tomcat at different ports on the same and different machines based on requirement.
  • Monitored health of Linux boxes where Tomcat instances are running in both production and testing environment.
  • Isolated an application that is misbehaving during the testing phase into a separate tomcat instance.
  • Used Chef for managing server application server such as Apache, MySQL, Tomcat.
  • Configured and maintained the high availability for the multiple Tomcat instances through Session Replication.
  • Supported various web servers (Apache and Tomcat) running on Linux Operating systems.
  • Installed and configured Apache, Tomcat, and Web Logic and Web Sphere applications.
  • Experience in working with MySQL databases, Apache Web server, Tomcat Application Servers.
  • Used Jenkins, Build forge for Continuous Integration and deployment into Tomcat Application Server.
  • Configured, and maintained Apache web server from open source with Java and Tomcat.
  • Experience with application servers such as Tomcat or Web Sphere Application Server Community Edition.
  • Worked in trouble shooting, Configuration and deploying Enterprise Application in Apache Tomcat.
  • Experience in installing, integrating, tuning and troubleshooting Apache Tomcat application server.
  • Installed and configured Apache/Tomcat web server for both UNIX and Linux platforms.
  • Worked on Apache Tomcat Server for installing and locally hosting web pages.

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24. YUM

average Demand
Here's how YUM is used in Linux Administrator jobs:
  • Experienced in configuring YUM repositories for Package installations.
  • Administered Yum and subversion repositories.
  • Based on the audit requirements applied patches every quarterly using Red Hat Satellite server, Up2Date, YUM, RPM tools.
  • Created yum repositories and configured them on the servers and Installed packages with yum and rpm for WebSphere application servers.
  • Performed package installations, maintenance, periodic updates and patch management on Linux using rpm, yum and Satellite server.
  • Created local repositories on Linux servers Performed server updates, patching, upgrade and package installations using RPM and YUM.
  • Worked with RedHat Linux tools like RPM and YUM to install packages and patches for RedHat Linux.
  • Managed and installed software packages using YUM and RPM and created repository files for offline servers.
  • Applied patches and packages on Linux servers using RPM Red Hat Package Manager and YUM tools.
  • Performed patching of RHEL using yum, up2date package management system utilities for effective package maintenance.
  • Worked on upgrades without downtime using yum and as well as setting servers locally for upgrades.
  • Installed and updated required packages using the central repository (YUM) and RPM.
  • Packaged management and Added patches on Red-hat Linux servers using RPM's &YUM.
  • Experienced in Red Hat Linux package administration using YUM configuration like assigning IP addresses.
  • Applied patches regularly to meet audit requirements using Big Fix, YUM and RPM.
  • Removed, Installed, Upgraded, and queried software packages using RPM and YUM.
  • Experience installing RPM, YUM packages including loading patches and other management responsibilities.
  • Experience in Package Management using Red Hat RPM/YUM and Red Hat Satellite server.
  • Installed software packages on servers using tools like yum, apt-get and rpm.
  • Manage, install patches, and other software packages using YUM and RPM.

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25. RPM

average Demand
Here's how RPM is used in Linux Administrator jobs:
  • Experience configuring Satellite and Repository servers to perform RPM installations across the environment.
  • Develop Red Hat Satellite/Spacewalk service, local rpm repositories, patch management, and hardening of operating systems per CIS guidelines.
  • Created Linux RPM package script then uploading and executing the package through BladeLogic on TEST, UAT and PROD environment.
  • Compiled custom RPM for RedHat 7 from latest ISC BIND sources, to take advantage of enhanced RPZ functionality.
  • Designed bash scripts to automatically download, compile, and configure software (from source or RPM).
  • Install, Update and erase the required packages to provide services using rpm and up2date.
  • Created new RPM scripted installs for software and managed the in house VM provisioning tool.
  • Used RHN Satellite exporter command to channel all the packages and deploying rpm packages.
  • Install and configure new software with RPM, up2date and hardware installation as required.
  • Installed, upgraded and managed packages through RPM and also took care of dependencies.
  • Worked on building RPM's and compiling the Linux kernel for different builds.
  • Install and configure CentOS servers along with optimizing and installing software/RPM's.
  • Handled troubleshooting issues like boating RPM packages, User management and backup.
  • Applied patches on all Linux Boxes from common repository using RPM.
  • Installed and maintained software packages (.rpm) as necessary.
  • Installed and configure the RPM package manager for packages.
  • Installed RPM packages and applied patches to LINUX.
  • Installed, remove and update packages using RPM.
  • Installed, queried and updated RPMS.
  • Installed different RPM Linux 4.0/5.0/6.0.

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26. Kernel

average Demand
Here's how Kernel is used in Linux Administrator jobs:
  • Installed Operating System and configured kernel parameters for Linux/Unix servers.
  • Worked on Kernel re-configuration & parameter tuning.
  • Compiled kernel, Device drivers, performance tuning for OS and application, customization as per requirements, security patching.
  • Experience in Performance monitoring, usage and load of the system, changing kernel parameters for better performance.
  • Customize and cross compile Linux kernel for the hardware which they use in the product (PPC).
  • Perform the Linux Kernel and operating system upgrades on the server as suggested by Linux engineering team.
  • Worked with Linux performance tuning to add tuning parameters to the kernel and optimize the kernel.
  • Performed system Firmware and ILO firmware updates Linux kernel, memory upgrades and swaps area.
  • Experience in applying patches and upgrading OS versions and tuning kernel parameters.
  • Perform Linux Kernel Patching and Service Pack upgrades on a regular basis.
  • Monitored System performance and do kernel tuning to enhance the system Performance.
  • Well exposure to performance/kernel tuning, patch/packages management on UNIX servers.
  • Modified the Linux Kernel (2.4) to control the snappiness.
  • Performed Kernel and memory upgrades on Linux servers in Virtual environment.
  • Performed Kernel update patching and tuning on a regular basis.
  • Experience making Kernel changes to improve system data throughput.
  • Performed Red Hat Linux Kernel Tuning for TCP stack.
  • Used to perform Red Hat Linux Kernel Tuning.
  • Install security fixes, kernel and OS patches.
  • Experience in developing kernel modules in Linux/Unix platforms.

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27. Mysql

average Demand
Here's how Mysql is used in Linux Administrator jobs:
  • Installed and configured Linux development servers supporting a Lab Wiki, MySQL, Apache, Subversion, and Eclipse applications.
  • Created websites running on Linux web-servers utilizing PHP and MySQL for form creation and data storage.
  • Experienced in using advanced PostgreSQL/MYSQL features like table partitioning and different types of oracle indexing.
  • Installed and configured Apache, MySQL and PHP products on the Linux servers.
  • Experienced in the installation, patching and upgrading of MySQL Applications on Linux.
  • Installed and configured Oracle, MySQL & Java based Applications on Linux servers.
  • Managed database on Windows server with MySQL and on Linux server with MariaDB.
  • Installed, configured and maintained Apache, MySQL, PHP based web servers.
  • Utilize MySQL for creation and modification of queries and replication maintenance.
  • Managed Apache and MySQL High Availability and Load Balanced clusters.
  • Provided assistance to customers with their MySQL configurations and data.
  • Installed and configured LAMP Linux Apache, MySQL and PHP.
  • Experience managing and tuning MySQL and writing SQL scripts.
  • Experience in stop/start and killing of hung MySQL process.
  • Experience with Installation, Configuration and Administration MySQL.
  • Configure MySQL replication of master and slave servers.
  • Light Oracle and MySQL Administration and development.
  • Configured MYSQL Master Slave Replication.
  • Experience in Installation of MYSQL.
  • Install and configure MySQL servers.

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28. SSH

average Demand
Here's how SSH is used in Linux Administrator jobs:
  • Developed utility for automatic creation and propagation of OpenSSH asynchronous keys across Linux cluster nodes for oracle cluster software installations.
  • Configured Open-ssh server for secure remote administration.
  • Manage local network device configurations, routing, firewalls and remote connections (SSH, terminal or otherwise.).
  • Configure and set up ssh access to enabled or disabled on virtual machine as required.
  • Experience in Installation and Upgrade of SSH and SSL Configuration of key based authentication.
  • Secured servers by using password less SSH authentication on servers via SSH keys.
  • Worked on system monitoring and remote connection management using telnet and SSH connections.
  • Shared FTP and SSH sessions according to the requirement of the users.
  • Worked with Chef Plugins like ssh, search to administer Chef nodes/clients.
  • Used reverse SSH tunneling to do administration work for remote locations.
  • Allow for external user access via SSH.
  • Installed and configured OpenSSH and TCP Wrappers.
  • Implement VPN solutions for clients (OpenVPN, OpenSwan, SSH, Port forwarding).
  • Installed and worked with Secure Shell (SSH) & TCP-Wrappers.
  • Used various networking tools such as SSH, Telnet, rlogin, ftp and ping for daily operational activities.
  • Implemented SSH for secure transfers and implementation of PKI between servers to enable Password less logins between servers.
  • Implemented SUDO, SSH and other security tools Installed and managed the LAMP server in the Linux servers.
  • Acquired root SSH access to the entire server network involving a three week intensive course and subsequent test.
  • Used putty and ssh certificate tools to login and use secure access points.
  • Managed sudo rules and pushed ssh keys (public and private).

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29. Cron Jobs

average Demand
Here's how Cron Jobs is used in Linux Administrator jobs:
  • Developed shell scripts and scheduled CRON jobs.
  • Created CRON Jobs for file backups.
  • Supported proactive maintenance on systems by timely upgrading Patches to the systems and applications, Scheduling batch jobs and cron jobs.
  • Developed Cron jobs and PythonScripts for automating administration tasks like file system management, process management, Server reboots etc.
  • Experienced in writing shell/bash scripts to automate the administrative tasks using Cron jobs and managing them in repository using GIT.
  • Assist in setup and maintenance of the LAMP environment (user maintenance, cron jobs, NFS issues).
  • Schedule critical Cron jobs to run during non-peak hours, such as overnight, to avoid service disruption.
  • Assist in administrative duties such as configuring Apache, user maintenance, cron jobs, and writing scripts.
  • Monitored status of processes in order to increase the system efficiency, scheduled system related and cron jobs.
  • Created bash scripts for System service checks, Disk monitoring, Application monitoring and cron jobs.
  • Created and scheduled Cron Jobs such as for Backup, System Monitoring and removed unnecessary files.
  • Perform day-to-day monitoring jobs like installing and updating software's with rpm and scheduling cron jobs.
  • Experience in setting up Cron jobs for the purpose of configurations and daily processes.
  • Manage systems routine backup, scheduling jobs and enabling cron jobs.
  • Set up cron jobs to automate processes.
  • Scheduled Cron jobs to automate system task.
  • Created system audit report frequently to track user's logins, success & failures by running automated Cron jobs.
  • Created shell scripts to check errors and disk space and also deployed Cron jobs to automount system task.
  • Log management using cron jobs Automate administration tasks through use of scripting and Job Scheduling using CRON.
  • Worked with DB team to setup cron jobs for auto backups for daily and weekly basis.

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30. AIX

low Demand
Here's how AIX is used in Linux Administrator jobs:
  • Implemented and maintained several client-server applications on AIX platform.
  • Predefined and Customized Volume Group management on AIX
  • Resolve Remedy change and Help Desk tickets to troubleshoot multiple OS Servers (Linux, HP-UX, Sun, AIX).
  • Scripted entire configuration management framework for AIX when executive support for open source wasn't supported to ensure consistent systems.
  • Monitored System Performance of Virtual memory, System events, Swapping, Disk utilization, CPU utilization on AIX Servers.
  • Experience in Installing, configuring, and maintaining IBM Rational Clear Case and Rational Clear Quest on AIX platforms.
  • Installed, Configured, Administered, and Supported IBM Web Sphere Application Server 6.0/7.0 on Linux and AIX servers.
  • Build DR procedures for TSM Server 4/5 on AIX 5.1, Updated Volume Numbers for daily DR backups.
  • Experienced in installation, configuration, tuning, security, backup, recovery and upgrades of IBM AIX.
  • Experience in installing agents like ESM, SSM, Guardian, Oracle client on Linux and AIX servers.
  • Install OS packages and patches, break/fix support, system security management on RHEL 6.x/5.x and AIX 7.1/6.1.
  • Installed AIX 5.x using NIM on p series servers, applying packages, patches, configuring volumes.
  • Diagnose and correct problems with network services and any other hardware issues in AIX and Linux servers.
  • Completed a full migration of UNIX Server (AIX and Linux), including all network services.
  • Experience in Monitoring & Performance tuning of AIX server for the latency issues reported by the servers.
  • Worked with implementation team of high availability cluster on IBM RS/6000 platform (HACMP for AIX).
  • Served as subject matter expert for different business accounts running Unix AIX or HP-UX operating systems.
  • Supported 50+ AIX installations and multiple RedHat Linux installations filling roles from HTTP to Database servers.
  • Planned, sized, customized the new installations and installed the applications on AIX servers.
  • Experienced in building the AIX 6.1 Golden image and deploying it in the production environment.

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31. Centos

low Demand
Here's how Centos is used in Linux Administrator jobs:
  • Set up and manage Sun Grid Engine (SGE) job scheduling management HPC on Red Hat/ CentOS.
  • Worked here while I was also going to school at the Red Hat academy learning Red Hat/CentOS.
  • Installed and configured 10+ instances of RedHat and CentOS Linux 6.x/7.x server.
  • Installed and configured SSH server on Red hat/ CentOS Linux environment.
  • Maintained Linux host servers using CentOs 6.5.
  • Perform operating system, upgrades, security patches, and maintain system repositories on Red Hat and Centos 6, 7.
  • Experienced on Installing, Configuring and Upgrading of Red Hat Linux 5/6, Centos 5/6 operating systems.
  • Designed, built, installed and configured Centos, Red Hat Linux5.x and 6.x HP-UX 11.23.
  • Maintained Centos 5.5 servers that run subversion and log processing applications.
  • Installed and configured SSH server on Redhat/CentOS Linux environments.
  • Created and managed custom CentOS and Linux based AMIs.
  • Implemented migration from Redhat to CentOS environment.
  • Installed KVM hypervisor in Redhat/Fedora/CentOS Linux operating system.
  • Administered VMware ESX 5.5 for running the Windows, Centos and Red Hat Linux servers on all environments.
  • Performed centOS and custom Linux deployments utilizing Packer, Puppet and Chef with scalability in AWS.
  • Implemented the virtualization using VMware in Linux and installed EXSI hypervisor for VMware for creating for new Centos servers.

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32. Ldap

low Demand
Here's how Ldap is used in Linux Administrator jobs:
  • Open LDAP administration, providing user authentication and resolving various issues including setting replication between master server and backup server.
  • Researched implementation of OpenLDAP and Sun Directory Server for centralizing authentication.
  • Provided assistance in LDAP server configuration for user authentication on network.
  • Configured centralized user account management using unbound ID LDAP.
  • Administer and troubleshoot user authentication using LDAP authentication.
  • Accomplished System/e-mail authentication using LDAP enterprise Database.
  • Deployed LDAP for centralized authentication.
  • Installed, configured and maintained LDAP for the client and helped them to migrate from Sun one LDAP server to IBM.
  • Resolved configuration issues and problems related to OS, mounts, LDAP, user ids, Networking, DNS and issues.
  • Assisted in configuring the application server with other components such as database, LDAP directory, Active directory.
  • Worked on directory servers like LDAP (Linux Server) and Active Directory (Windows server).
  • Experience in installation and configuration of Apache, BEA WebLogic, LDAP, and mail servers.
  • Worked on the installation of Web Sphere on Linux for the development team and configured LDAP.
  • Administered and configured DNS, LDAP, NFS, NIS and Samba in Red Hat Linux.
  • Enabled security using the LDAP registry by assigning different roles to different users and groups.
  • Develop framework for System Automation, Design and Automate LDAP security groups and permissions.
  • Worked on User and Group management, Security and access control using LDAP.
  • Managed users and groups on a large scale in NIS and LDAP environments.
  • Installed/configured/managed the LDAP servers which act as Authentication server for all UNIX servers.
  • Configured LDAP server, used it for authentication, and using its database.

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33. Nagios

low Demand
Here's how Nagios is used in Linux Administrator jobs:
  • Worked on cleaning up our NAGIOS with many false alerts related to routers and servers that were decommissioned.
  • Installed and Configured the Monitoring services on Linux with NAGIOS.
  • Monitor Hardware console for any hardware issues using NAGIOS.
  • Reduced downtime of engineering resources by installing and configuring Nagios to monitor public and private services on critical engineering systems.
  • Eliminated extended downtime of network and processes by installing and configuring a Nagios server to monitor Windows/Linux servers.
  • Created Nagios instance to monitor production environment continuously and will alert when any problem occurs.
  • Implemented nagios and integrated with puppet for automatic monitoring of servers known to puppet
  • Monitored and maintained system integrity using various monitoring tools such as Nagios.
  • Created and implemented custom Nagios monitoring and managed with Puppet.
  • Researched and implemented Nagios and Cacti for network monitoring.
  • Monitored and tested alerts in Nagios monitoring software.
  • Configured Nagios servers, maintained and updating timely.
  • Installed and Configured System Monitoring Tools Nagios.
  • Created automatic discovery software with Nagios integration.
  • Redesigned and redeployed Nagios implementation.
  • Performed network monitoring using Nagios.
  • Network monitoring using NAGIOS tool To provide ongoing support in systems management and administration of LINUX/UNIX in global-scale environment.
  • Installed the Open Monitoring Distribution (OMD) tool for daily system monitoring and issues resolution using Nagios.
  • Managed a Nagios installation that trended metrics and notified for issues from 3000+ services spread across 300+ hosts.
  • Created tickets to track, diagnose and resolve new and ongoing incidents using Nagios ticketing system.

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34. Perl

low Demand
Here's how Perl is used in Linux Administrator jobs:
  • Work experience in Bash/Python/Perl scripting and automation.
  • Streamlined warehouse associates day to day operations with modification to RF scanners procedures using MySQL and custom DHCP functionality with Perl.
  • Participated in Java/J2EE and also have the ability to develop XML, HTML, Shell Scripts and Perl Scripts.
  • Created Maven, Perl & UNIX scripts for build and Release activities in QA, Staging and Production environments.
  • Developed my skills in useful programming languages such as: C, PHP, Python, Perl, and Java
  • Implement and Enhance the Existing Scripts which are developed in Shell, Perl, Ruby and Python.
  • Implemented and Enhanced the Existing Scripts which are developed in BASH, Perl, and SQL.
  • Configured web based trouble ticket tracking system (RT, Perl, MySQL, Apache).
  • Cluster management and scripting for file & log retrieval/collection/monitoring in Perl, CSH, and BASH.
  • Created users list and ensured all permissions were properly given for different files on the machines.
  • Worked with Security team for required authentication setup and make sure the things are going properly.
  • Implemented and manipulated Shell and Perl scripts for release and build automation per requirement.
  • Configured Response Policy Zones for BIND and wrote Perl automation scripts for same.
  • Used Shell and Perl scripting to deploy artifacts that are built by Ant.
  • Experience in using Perl, shell scripting for Applications, Backups and scheduling.
  • Experience developing code in scripting languages Python, Perl, MYSQL and PHP.
  • Shell, Perl scripting for automating changes during move to speed up process.
  • Created and maintained the Shell/Perl deployment scripts for Tomcat web application servers.
  • Developed ASP, Perl, SQL tools and scripts for Chicago teams.
  • Worked on UNIX shell scripts and Perl Scripts for automating the deployments.

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35. Troubleshoot

low Demand
Here's how Troubleshoot is used in Linux Administrator jobs:
  • Performed systems administrator role in configuring, troubleshooting and maintaining Linux and Unix infrastructure for a mid-sized services company.
  • Administered Linux infrastructure to include operating system, application baselines, user account creation, monitoring, and troubleshooting.
  • Performed extensive testing and troubleshooting of the Asset Management Solution to produce more accurate client software inventory and licensing.
  • Performed problem determination and problem source identification based on 1st level troubleshooting and provided production support.
  • Gained knowledge on troubleshooting and problem solving skills, including application and network-level troubleshooting ability.
  • Installed and configured Apache Web-servers and also troubleshoot problems arising from Apache functionality.
  • Completed over 20 tickets using Remedy that involved troubleshooting equipment hardware issues.
  • Involved in debugging and troubleshooting related to production and environment issues.
  • Performed Server Creation, Configuration & Supported environments by troubleshooting.
  • Monitored server performance and troubleshooting server related problems to SNMP.
  • Perform system and application troubleshooting and other related issues.
  • Perform troubleshooting of supported desktop operating systems and applications.
  • Advanced usage of sniffers for network troubleshooting and optimization.
  • Monitored and troubleshooted System Performance and network connectivity issues.
  • Monitored the Linux servers regularly and performed troubleshooting steps.
  • General Network issues troubleshooting related to network outages.
  • Performed troubleshooting, resolution, and problem analysis.
  • Resolved user tickets by troubleshooting Linux systems.
  • Performed Server design engineering, configuration and troubleshooting of all components, hardware and software, including large scale storage systems.
  • Worked extensively with Vendors like Sun, NetApp, and HP for troubleshooting the issues and in replacing the failed Hardware.

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36. Puppet

low Demand
Here's how Puppet is used in Linux Administrator jobs:
  • Deployed and maintained fully automated production environment of several hundred servers using CFengine3 and development / research branch using Puppet.
  • Designed and implemented Puppet-based configuration management system for all new Linux machines (physical and virtual).
  • Experience working with configuration management software like Puppet and involved in managing puppet master server.
  • Performed automated user management, installation and configuration of various services and backup-using Puppet.
  • Deployed Puppet, PuppetDashboard, and PuppetDB for configuration management to existing infrastructure.
  • Carried out deployments and builds on various environments using Puppet continuous integration tool
  • Maintained fully automated configurations on development and production environment's using Puppet.
  • Automated various applications, from scripting till production deployment using Puppet.
  • Automated configuration and deployment of Linux and Windows machines using Puppet.
  • Configured and supported installations of applications through Puppet Configuration Management.
  • Worked on AWS server provisioning and standardization using Puppet Manifests.
  • Installed and configured Puppet Server and agents for configuration management.
  • Test Puppet deployment for automated server builds and configuration.
  • Used Puppet extensively as a configuration management tool.
  • Maintain repositories for Puppet related configuration files.
  • Configured and managed multiple servers using Puppet.
  • Created Puppet manifests maintain customer application data.
  • Migrated configuration management from Chef to Puppet.
  • Administer Puppet to configure multiple applications.
  • Used Puppet to automate Configuration management.

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37. Suse

low Demand
Here's how Suse is used in Linux Administrator jobs:
  • Experience supporting SUSE servers in Production and Development environments.
  • Configured and Maintaining OpenSuse Enterprise Linux servers.
  • Installed and configured RED HAT Enterprise Linux 5/6, SUSE 9/10 Windows 2003 on 150 virtual servers.
  • Deployed and managed SUSE Linux based servers and workstations, for production and lab usage.
  • Implemented PXE boot server for network boot loader in SuSE and Red Hat Linux.
  • Installed SUSE OS in virtual machine and configured FTP server in it.
  • Maintained 10 servers running Linux SuSE 10 and Oracle 11.
  • Installed SUSE Enterprise Server version 10 on HP Blades.
  • Installed and configured RedHat Enterprise Linux and SUSE Linux.
  • Worked with SUSE Linux System Administration team.
  • Installed MQM in SuSe Linux.
  • Update and upgrade OS and Firmware for LINUX SUSE servers.
  • Configured all existing Suse9 modeling software to run in compliance with Fortran specifications.
  • Provided 24/7 on call supports in debugging and fixing issues related to Redhat and SuSE Linux.
  • Supported multiple client websites running on SUSE Linux 8, DEBIAN 3.1 and Redhat ES2.
  • Installed oracle Grid and Oracle RAC with ASM Worked on SuseZlinux SLES9.
  • Installed SuSe Enterprise Linux 9 on the above servers using Autoyast.
  • Configured different flavors of Linux like centos, SUSE and RedHat.
  • Configured and maintained Redhat Linux and SUSE servers.
  • Installed splunk in SuSe Linux.

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38. EMC

low Demand
Here's how EMC is used in Linux Administrator jobs:
  • Involved in decommission of the servers which reached end of life and performed SAN migrations using LVM and EMC tools.
  • Involved in Design, Configuration & Implementation of Unix/Linux migration activities from 3PAR to EMC SAN devices like VMAX.
  • Performed Data Migration across HP, NetApp, EMC, IBM, Dell and other Storage solutions.
  • Involved in mass migration of data from old EMC Storage sub systems to new sub systems.
  • Involved in the implementation and administration of SAN utilizing products of EMC, Cisco and Brocade.
  • Worked on EMC disk storage to allocate disk space, configuring LUNS on server side.
  • Experience supporting 3Par and EMC storage in creating LUN's and mapping to Linux hosts.
  • Experienced with UNIX Administration, EMC Storage Administration, Enterprise Hardware Troubleshooting and Capacity Planning.
  • Worked on EMC SAN tech refresh on both host based and array based migration.
  • Installed and configured EMC storage with 0, 1&5 RAID configurations.
  • Worked on Brocade SAN Switch and EMC Symmetric on SAN and NAS respectively.
  • Worked on SAN Migration from EMC Clarion to DMX for RedHat Linux.
  • Worked on storage migration project from EMC DMX to EMC VMAX storage.
  • Host based EMC SAN Storage migration of old arrays to new Array.
  • Interacted with vendors (Sun/HP/EMC/Dell) for Hardware and software supports.
  • Worked with SAN migrations team to bring the EMC disks online.
  • Installed, Configured and worked on IBM and EMC storage device.
  • Provided technical assistance for SAN and EMC storage solutions.
  • Managed SUN clusters in SAN environment (EMC).
  • Experience supporting EMC Arrays like Clarions and VMAX arrays.

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39. User Accounts

low Demand
Here's how User Accounts is used in Linux Administrator jobs:
  • Administered Active directory organizational units, user accounts and groups.
  • Developed multiple shell scripts to aid in maintaining user accounts by both creating and removing accounts as needed from multiple systems.
  • Manage user and group accounts, grant access to users, password recovery and lock user accounts.
  • Performed complete user accounts maintenance tasks using command line tools and Admin tool GUI menus.
  • Utilized NFS management - taking care of user accounts/groups, setting up of NFS environment.
  • Managed file servers, directory services, Web servers, and set up user accounts.
  • Configured and managed groups and User accounts, setting up User environments in Linux.
  • Administered all user accounts in active directory and maintaining Apache web server and DNS.
  • Maintained user accounts, loading of software and guidance to users on the network.
  • Established and maintained user accounts, assign file permissions and user passwords.
  • Create, change, and delete user accounts and Manage firewall rules.
  • Created and maintained user accounts through Active Directory on Windows Servers.
  • Experienced in creation and maintenance of user accounts and active directory.
  • Created and maintained user accounts, profiles, and security rights.
  • Created and managed user accounts, user profiles, and privileges.
  • Manage user accounts and authentication process by NIS service.
  • Managed user accounts and groups on Linux Servers.
  • Created user accounts and managed their access level.
  • Create and manage user accounts including SUDO access.
  • Administered local user accounts on Linux Servers.

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40. Logical Volumes

low Demand
Here's how Logical Volumes is used in Linux Administrator jobs:
  • Created logical volumes for various applications.
  • Configured Raid with the help of lead and created a LUN and Logical volumes from that.
  • Created disk partitions and files system and extended storage space using Logical Volumes manager.
  • Created Logical volumes and swap spaces.
  • Created Copies of Logical volumes on different physical volumes in rootvg or as requested by the application team.
  • Managed RedHat drives using Linux Logical Volume Manager * Created logical Volumes for Oracle database installation.

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41. Jboss

low Demand
Here's how Jboss is used in Linux Administrator jobs:
  • Developed puppet modules Tomcat, JBOSS, WAS, SOLR, Zookeeper and Beaker Ruby test scripts to test the modules.
  • Involved in working with QA team in Load and Integration testing of J2EE applications on JBOSS Application Servers.
  • Tuned OS parameters like SWAP and virtual memory setting s to improve the JBOSS performance.
  • Installed and configured JBOSS Application servers on DEV, QA and PROD Systems.
  • Experience in Installing and Configuring JBOSS 5.1 Application Server in test environment.
  • Installed and upgraded the following Jboss-5.5-20 containers, tomcat-5.5.20 and apache-2.2.21.
  • Installed, configured and maintained Apache/Tomcat Web Server, JBOSS.
  • Experience in applying patches and plug-ins for JBOSS application server.
  • Installed, configured and maintained Apache/Tomcat Web Server/JBOSS.
  • Configured Apache for JBOSS domains with virtual servers.
  • Configured and monitored JBOSS instances.
  • Configured Apache/Tomcat/JBoss/MySQL and PHP on Linux/Unix machine.
  • Worked on installing, integrating, tuning, and troubleshooting Apache Tomcat, JBOSS, WebSphere and Weblogic application server.
  • Installed/Configured the WebSphere server and JBoss EAP; Managed tuning and performance of high profile applications running on them.
  • Configured Apache HTTPD 2.2 servers with back-end JBoss 6/7 JVM's and maintained in Pre-Prod and Production environments.
  • Performed application installation and management on Linux servers for applications like JBoss 4.2.x, 5.x, Oracle.
  • Provided support for JBoss 4.0.x and Apache, applications for operation related to installation and configuration.
  • Installed and Configured JBOSS on Java Applications Administration, package installation, configuration of CentOS 5/6.
  • Deployed the WAR, JAR and EAR applications in Tomcat, Jboss and WebLogic servers.
  • Installed and configured application server like JBoss and web server like Apache and Tomcat.

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42. Websphere

low Demand
Here's how Websphere is used in Linux Administrator jobs:
  • Involved in designing WebSphere Application Server load balancing and fail over by using workload Management horizontal and vertical scaling.
  • Perform WebSphere Administration including working with application developers to deploy Java applications into test and production environments.
  • Configured Global Security for WebSphere console and assigned different roles to Developers and other Admins.
  • Experienced with Java application servers such as Tomcat and WebSphere Application Server Community Edition.
  • Carried on installation and configuration of WebLogic and WebSphere application server.
  • Performed Installation, configuration and administration of WebSphere application server.
  • Performed installation, configuring, tuning, and troubleshooting of Apache web server, Tomcat, and WebSphere application servers.
  • Managed IBM Cloud Platform IBM Pure Application Platform, automatic deployment of IBM WebSphere Application Server 8.5.5 and enterprise applications.
  • Configured JVM's on the WebSphere Servers and deployed the applications as per the specifications of the application teams.
  • Used UNIX for scripting automating WebSphere administration tasks like creating JDBC resources, deploying applications, creating clusters.
  • Configured the web server interfaces, session management, virtual hosts and transports for WebSphere.
  • Involved in configuring the WebSphere load balancing using WebSphere workload management (WLM).
  • Involved in number of installations of IBM WebSphere instances from development to production.
  • Installed and configured WebSphere MQ on Windows, HP-UX and Linux.
  • Worked with WebSphere application teams and database teams.
  • Installed, configured WebSphere Application Server 6.0.
  • Installed and configured WebSphere, Apache.
  • Worked on WebSphere MQ Load Balancing.
  • Performed Production WebSphere 7 & 8.
  • Experienced shell scripting to automate administration jobs including backups for Websphere administration repository.

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43. Vsphere

low Demand
Here's how Vsphere is used in Linux Administrator jobs:
  • Installed and updated ESX 3.5 and did beta testing of ESX 4.0 and vSphere.
  • Worked on the virtual environments through the virtual ware clients like VMIC/ VSphere.
  • Clone servers using VMware vSphere5.5 to restore and migrate servers at new location.
  • Configured cluster pools, enabled HA and DRS features using vSphere 5.x.
  • Created and deployed multiple VM's using VSphere client.
  • Create secured master image for Windows 2012 R2 and Windows 2016 GA for deployment of future servers in VMware Vsphere.
  • Added ESXi servers to the cluster for Fault tolerance (FT) and managing them through VSphere client.
  • Scratch build and configuring of Virtual and Physical Linux servers on VMWare v6, vSphere Client 6.
  • Installed and configured VMware ESX server 3.5, 4.0 and VSphere 4.0 on Dell power edge servers.
  • Used VMware Vsphere Client to snapshot each server before applying updates and security patches.
  • Used the vSphere client to connect with the VCenter server for management purposes.
  • Worked in managing VMware Server to build guest OS using vSphere client.
  • Experience with VMWare software including VSphere and Virtual Desktop Infrastructure.
  • Upgrade and patch ESXi hosts using vSphere Update Manager.
  • Administer VMware Infrastructure Client 3.5 and VSphere 4.1.
  • Involved in integrated Vsphere hypervisor with Open Stack.
  • Experience working with VMware, vSphere client.
  • Installed and deployed the VMware ESX containers for the VM cloud and Vsphere.
  • Configure and manage HP BL480 blade servers in data center clusters visualization environment in VMWare vSphere 5 client.
  • Build Linux server, installing kickstart image 5.1 and 6.1 using VMware VSphere client 5.3.

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44. CPU

low Demand
Here's how CPU is used in Linux Administrator jobs:
  • Upgraded CPU/memory/adapter dynamically and manually using HMC and SDMC.
  • Monitored System Performance of Virtual memory, System events, Swapping, Disk utilization, CPU utilization by running scripts.
  • Performed troubleshooting of various bottlenecks including those found in the CPU and memory using system and network monitoring tools.
  • Analyze the issues related to CPU, Memory, File systems, and disk space utilization.
  • Monitor statistics such as CPU load, network utilization, and disk space.
  • Monitored and optimizing performance, analyzed CPU, storage, and memory performance.
  • Used NAGIOS monitor tool to monitor CPU, memory and disk space loads.
  • Monitored the systems CPU, memory, RAID using the system monitoring tool.
  • Managed CPU usage, shared memory, disk space usage and controlling processes.
  • Performed routine management of WebSphere environment, monitoring Disk space, CPU utilization.
  • Monitor CPU loads, restart processes, check for file systems.
  • Managed Swap Space, Disk utilization and CPU utilization.
  • Worked on Hard disk and CPU module replacements.
  • Used Grafana dashboards to monitor Storage, Memory and CPU consumption of various applications.
  • Monitored CPUs, memory, disks and swap space utilization.
  • Generated reports to show the trends of resource utilization user/CPU/network load Assisted other UNIX administrators when help was needed (i.e.
  • Experienced in Administration Concepts such as Virtualization and logical partitioning ( LPAR) of CPU, HMC usage.

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45. Production Servers

low Demand
Here's how Production Servers is used in Linux Administrator jobs:
  • Supported 24/7 high availability production servers.
  • Log into production servers and hosts, via SSH and console, to check system status and resolve issues.
  • Developed shell scripts for automation purpose and Installing and configuring Apache and supporting them on Linux production servers.
  • Managed Windows / Unix-based development, test, and production servers for Tucson Storage Technologies Group.
  • Installed and Managed Virtual Center 5.5 and Apache & supported them on production servers.
  • Installed and configured DCHP server in Linux to give IP leases to production servers.
  • Performed software and server support for production servers.
  • Installed and configuring Apache and supporting them on Linux production servers Ensure data recovery by implementing system and application level backups.
  • Performed system performance monitoring, created alerts and benchmarking for performance analysis on all application & production servers.
  • Managed over 50 Enterprise/Data Center physical and virtualized Linux production Servers.
  • Designed, built, and maintained production servers and RAID storage system.
  • Experience on the deployments procedure on the production servers.
  • provided 24/7 on-call support for Production servers.
  • Experience with virtualization technologies, such as Xen, Ability to build and monitor services on production servers.
  • Experience in managing Linux production servers using VMware vSphere client.
  • Deployed and administered vSphere / ESXi in large scale environments Installed and configured Apache and supporting them on Linux production servers.
  • Implement Log rotation and log management for production servers Support for Informatica adhoc requests for DSS Support team.

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46. System Performance

low Demand
Here's how System Performance is used in Linux Administrator jobs:
  • Experience in system Performance Monitoring and capacity planning in anticipation of resource usage and needs.
  • Managed Information Security Compliance activities, Linux server security administration & Monitoring system Performance.
  • Maintained optimal system performance with system monitoring, analysis, and performance tuning.
  • Planned and executed packages updates necessary for optimal system performance and security.
  • Monitored System Performance, Tuned and optimized systems for better performance.
  • Monitored system performance & performs preventive maintenance on servers.
  • Experience with Monitoring System Performance and capacity.
  • Monitored and tuned system performance.
  • Implemented the SSL and TLS protocols by using OpenSSL * System performance tuning, User administration and security.
  • Improved system performance by working with the development team to analyze, identify and resolve issues quickly.
  • Monitored system performance using performance-monitoring commands like SAR, PROF, VMSTAT, IOSTAT, NETSTAT.
  • Monitor system performance, performs system tuning, and proactively asses systems infrastructure for improvement.
  • Analyzed system performance, client-to-server traffic, and server-to- server traffic.
  • Worked on system performance monitoring, tuning and log management.
  • Created and activated Swap volumes to enhance system performance.
  • Monitored system performance using TOP, FREE, VMSTAT, IOSTAT, PS.
  • Created user logins, administering the system performance and monitoring user activities.
  • Monitor system performance parameters using Vmstat, and fine-tuning.

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47. Volume Groups

low Demand
Here's how Volume Groups is used in Linux Administrator jobs:
  • Configured Volume Groups and Logical Volumes for efficient storage management.
  • Used LVM extensively in Creating/Modifying/Deleting the Volume groups and Adding/Removing the physical disks and Mirroring volume groups and logical volumes.
  • Created volume groups and logical volumes, extended logical volumes for file system using Logical Volume Manager (LVM).
  • Managed physical and Logical volumes, Volume Groups using Logical Volume Manager and created/extended file systems in Linux.
  • Configured Logical Volume Manager (LVM) by creating physical volume, volume groups and logical volume.
  • Created Physical Volumes, Volume groups and Logical Volumes, implemented disk mirroring on LVM.
  • Created volume groups, extended volume groups, reduce volume groups, mirrored Volume Groups.
  • Use of Logical Volume Manager (LVM), creating Volume Groups, Logical volumes.
  • Configured volume groups and logical volumes using Logical Volume Manager (LVM) commands.
  • Managed Physical volumes, Volume Groups, and Logical volumes using Logical Volume Manager.
  • Administered Volume groups and Logical volumes using Linux volume manager (LVM).
  • Worked with Logical Volume Manager and creating of volume groups/logical.
  • Created physical volumes, volume groups, and logical volumes.
  • Create and administer Volume groups, Logical Volumes using LVM.
  • Created volume groups, Physical Volumes, logical volume & Filesystems and troubleshooting them if any issues.

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48. Ubuntu

low Demand
Here's how Ubuntu is used in Linux Administrator jobs:
  • Fast provisioning and configuration management for Ubuntu utilizing Cloud Formation and Chef on Amazon Web Services.
  • Supported Ubuntu trading infrastructure and application/desk support.
  • Maintained Linux workstations and installed and maintained Ubuntu Linux in the computer science department computer lab.
  • Used Debian distribution of Linux called Ubuntu in my personal computer and used python 2.3.
  • Worked as a Systems Administrator on Red Hat, CentOS and Ubuntu.
  • Define standards for installation and support for Linux/CentOS and Ubuntu platforms.
  • Migrated production environments from CentOS to Ubuntu.
  • Support for over 100 Windows (2000, XP, Windows 7), Mac OS X, and Ubuntu desktops.
  • Design and Deploy In house (Private Cloud) using eucalyptus and Open Stack on Centos and Ubuntu Operating system.
  • Designed, Implemented and maintained Windows, Centos 6.x and Ubuntu systems in a mixed environment.
  • Install and configure Ubuntu, Centos on remote servers and Desktop servers.
  • Created a VMWare Ubuntu cluster for mass web hosting of LAMP applications.
  • Upgraded Redhat Linux and Ubuntu on HP/Dell Servers and workstations.
  • Support Software Team and troubleshooting OS problems ubuntu, fedora Performing installations and configurations on servers.
  • Supported OS versions included CentOS, Ubuntu, Geentoo, Fedora and windows based cloud VMs.
  • Managed services supporting clients running Redhat/Centos 5/6/7, SuSe, Ubuntu Linux.
  • Install, configure and maintain Ubuntu linux with Apache, Mysql and PHP (LAMP) Experience in 24x7 working environment.
  • Performed day to day administrative tasks on the Moodle Servers running Ubuntu Deployed development and production Linux servers using Vmware.
  • Worked on installing and configuring Sun Solaris using jumpstart, Ubuntu, Red Hat Enterprise Linux using Kickstart.

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49. Http

low Demand
Here's how Http is used in Linux Administrator jobs:
  • Install and configure Apache/Tomcat under Linux for internal and external implementations using HTTP and HTTPS configurations.
  • Installed SSL certificates, key stores for WebLogic clustered environment and HTTP plug-in for Apache, I Planet and IIS.
  • Experience working on web applications like Apache, HTTP headers Load balancing, DNS, DHCP.
  • Experience in working with client-server protocols such as HTTP, TCP/IP and OSI.
  • Experience on Apache Port redirection (HTTP to HTTPS redirection).
  • Experience in application services like Mail, HTTP, Apache Tomcat.
  • Configured Apache HTTP web servers for application deployment and maintenance.
  • Implemented and maintained Apache web server with HTTPS.
  • Configured FTP, SFTP, HTTP/HTTPS and AS2 for exchange of files with trading partners.
  • Configured (HTTPS) on Apache, IIS 6 & 7, Web Logic.
  • Installed and configured networking Protocols VSFTP, NFS, SAMBA and HTTP APPACHE WEBSERVER.
  • Worked on Linux server configuring DNS, SSH, NFS, HTTP.
  • Administered and configured DHCP, NFS, FTP, HTTP servers.
  • Migrated Apache HTTPD from 2.4.6 to Apache HTTPD 2.4.10.
  • Installed and configured IBM Http Server, installed WebSphere plug-in, involved in generating plug-in file and solving plug-in related issues.
  • Support and maintenance all company products in customer data center (Saman Bank http://sb24.com/En).
  • Involved in installation/configuration of multiple instances of IBM HTTP server and configured F5 load balancers on Linux.
  • Worked on hosting and securing web pages using Apache (http) web server and Ssh.
  • Installed WebSphere application server and IBM http server (IHS) through IBM installation manager.
  • Configure and administer Apache and Application layers Configure HTTP caching properties for static caching.

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50. Python

low Demand
Here's how Python is used in Linux Administrator jobs:
  • Support python running tools and perform configuration and optimization updates during developing solutions.
  • Tested and implemented applications built using python.
  • Used pearl, Python and Ruby as scripting language to automate the tasks.
  • Set up and maintain continuous automated build system with Hudson and Python scripting.
  • Automated many administrative tasks using Shell, Python, XML and PHP.
  • Designed and developed Python programs to configure RAID volumes during production.
  • Developed shell, Python scripts for automation of systems administrative tasks.
  • Developed document flow reports using Java, Python and Hibernate ORM.
  • Maintain and update python scripts used for automation and report extracting.
  • Experience in using Python wrappers / modules for various API.
  • Developed Python and Shell scripts for regular and periodic jobs.
  • Use shell, Python to write automates scripts.
  • Worked on several python packages like NumPy.
  • Used Python fabric for AWS instance provisioning.
  • Created Python scripts used to generate reports.
  • Created and maintained Python scripts for Automating Build and Deployment Process and Creating Web Based Application by Using Django Framework.
  • Worked on Python scripts to automate and speed up the remediation, automation process on prod-environement.
  • Automated regression test system (in python) for LSR (live.gnome.org/LSR) utilizing buildbot.
  • Developed entire front-end and back-end modules using Python on Django Web Framework.
  • Generated Python Django forms to maintain the record of online users.

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20 Most Common Skill for a Linux Administrator

Linux14.1%
Web Servers7.1%
File System6.7%
Veritas6.2%
Red Hat6.1%
NFS5.4%
DNS5.4%
Disk5%

Typical Skill-Sets Required For A Linux Administrator

RankSkillPercentage of ResumesPercentage
1
1
Linux
Linux
8.7%
8.7%
2
2
Web Servers
Web Servers
4.4%
4.4%
3
3
File System
File System
4.1%
4.1%
4
4
Veritas
Veritas
3.8%
3.8%
5
5
Red Hat
Red Hat
3.7%
3.7%
6
6
NFS
NFS
3.3%
3.3%
7
7
DNS
DNS
3.3%
3.3%
8
8
Disk
Disk
3.1%
3.1%
9
9
Solaris
Solaris
3%
3%
10
10
Rhel
Rhel
2.5%
2.5%
11
11
Database
Database
2.5%
2.5%
12
12
LVM
LVM
2.3%
2.3%
13
13
Vmware
Vmware
2.3%
2.3%
14
14
NIS
NIS
2.2%
2.2%
15
15
Unix
Unix
2.1%
2.1%
16
16
OS
OS
2.1%
2.1%
17
17
Kickstart
Kickstart
2%
2%
18
18
Bash
Bash
2%
2%
19
19
Virtual Machines
Virtual Machines
2%
2%
20
20
SAN
SAN
1.9%
1.9%
21
21
Web Application
Web Application
1.9%
1.9%
22
22
Setup
Setup
1.8%
1.8%
23
23
Tomcat
Tomcat
1.8%
1.8%
24
24
YUM
YUM
1.8%
1.8%
25
25
RPM
RPM
1.8%
1.8%
26
26
Kernel
Kernel
1.7%
1.7%
27
27
Mysql
Mysql
1.7%
1.7%
28
28
SSH
SSH
1.6%
1.6%
29
29
Cron Jobs
Cron Jobs
1.6%
1.6%
30
30
AIX
AIX
1.6%
1.6%
31
31
Centos
Centos
1.5%
1.5%
32
32
Ldap
Ldap
1.5%
1.5%
33
33
Nagios
Nagios
1.4%
1.4%
34
34
Perl
Perl
1.4%
1.4%
35
35
Troubleshoot
Troubleshoot
1.3%
1.3%
36
36
Puppet
Puppet
1.1%
1.1%
37
37
Suse
Suse
1.1%
1.1%
38
38
EMC
EMC
1.1%
1.1%
39
39
User Accounts
User Accounts
1%
1%
40
40
Logical Volumes
Logical Volumes
1%
1%
41
41
Jboss
Jboss
1%
1%
42
42
Websphere
Websphere
1%
1%
43
43
Vsphere
Vsphere
0.9%
0.9%
44
44
CPU
CPU
0.9%
0.9%
45
45
Production Servers
Production Servers
0.9%
0.9%
46
46
System Performance
System Performance
0.8%
0.8%
47
47
Volume Groups
Volume Groups
0.8%
0.8%
48
48
Ubuntu
Ubuntu
0.8%
0.8%
49
49
Http
Http
0.7%
0.7%
50
50
Python
Python
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