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Linux Admin Resume

4.00 Rating

Dallas, TX

SUMMARY:

  • Experience on Red Hat Enterprise Linux, Oracle Linux, Solaris, Ubuntu Linux, AIX, Fedora Linux.
  • Experience and Familiar with Virtualization technologies like installing, configuring, administering VMware ESX/ESXi and Citrix Xen Server/openstack. Created and managed VMs (virtual server) and involved in the maintenance of the virtual server.
  • Understanding of networking concepts, (IE. Configuration of networks, router configuration and wireless security, TCP/IP, VPN, Content Filtering, VLANs, and routing in LAN/WAN, Ethernet Port, Patch Panel and wireless networks.)
  • Understanding of networking fundamentals and network security. Installation, Configuration and managing Firewalls like Fortinet, ZyWall, SonicWall, ISA with content filtering, Anti - Spam, Web filtering, NAT, Application Publishing to public IP, Port Forwarding, log analyzing with Syslog Server.
  • Experienced in installation, configuration, design and ongoing maintenance of Cisco router and switches.
  • Worked on Docker container to create Docker images for different environments. Good Exposure on Virtualization and Containers Docker.
  • Actively involved in configuring puppet open source with several third party’s applications and creating windows modules integrating Power Shell.
  • Experience with x86 / x64 Intel, HP, IBM & Dell hardware like rack-mounted servers, tower servers, desktop, laptop and other peripherals.
  • Experience in Server monitoring, capacity planning, application monitoring with the help of Tivoli, HP insight, Nagios, Cacti, Zabbix
  • Handling day-to-day User Administration tasks like adding, deleting and modifying user data and documenting all user data in a centralized location.
  • Performance tuning of Linux machines in the environment by kernel parameter tuning, identifying process that hog the system resources and containing them.
  • Experience working in customizing the Kick start and Jumpstart scripts to automate the installation of various servers used for various internal projects.
  • Responsible for Backup and Recovery operations of various servers using VERITAS Net Backup.
  • Working Knowledge on using and developing Shell, Perl and python scripts used to automate day to day administrative tasks.
  • Responsible for OS maintenance activities like upgrading the OS, updating the services and third-party software’s.
  • Experience in installation and configuration of Web Application servers like Apache, Tomcat and Web Logic.
  • Have tested various Linux Environments in the Development/Test Stages to help create a better standardized environment and resolutions of any problems if any occurred.

TECHNICAL SKILLS:

Operating Systems: Linux (Red Hat, CENTOS & SUSE), Solaris, IBM AIX, VMware ESX, SLES, Windows

Hardware: M5000, M8000, T5220, T5240 Sun E15K, E25K, Sun Fire 6800/4900/3800, Sun Fire 490/280, v880/v890, Sun Enterprise Servers E6500, E4500, E3500, Work Group Servers E450, E420, E250, E220, Netra 1405, Netra X1, Ultra 80, 60, 30, 10, 5, 2, 1, Intel Servers

Networking: TCP/IP, NIS, NFS, FTP, DNS, DHCP, Samba, Apache, SMTP, SSH, IP-Tables

WEB Technologies: Tomcat, APACHE, JBoss, Web Logic & Web Sphere

Programming, Scripting Language & Databases: RDBMS, MySQL, Oracle, Sybase, MSSQL, C, UNIX Bash & Shell Scripting, Perl ScriptingThird Party Software: VERITAS Volume Manager, VERITAS Cluster Service (VCS), HP Service Guard, Sun Cluster, EMC Storage, RAID Technologies, SSL, Splunk, Puppet, Jenkins, GIT

Protocols: TCP/IP, UDP RIP, OSPF, EIGRP, IGRP, SNMP, SMTP, TELNET

PROFESSIONAL EXPERIENCE

Confidential, Dallas, TX

Linux Admin

Responsibilities:

  • Creating the template for deploying for the environments of Linux 6 to 7.
  • Created Repositories for different customers and pushed data into repo’s using GitHub.
  • Performed tasks like managing User Accounts and Groups, managing Disks and File systems.
  • Maintain O&S Status Dashboard (NAGOIS).
  • Checking the Logs for errors and troubleshoot errors related to it.
  • Manage logical Volume manager on Red hat Servers.
  • Created Jenkins Jobs to automate Application Builds.
  • Installed nginx yum repoistries on Linux servers for proxy and load balancing over different environments.
  • Trouble-shoot Continuous integration and automated deployment and management using Docker.
  • Worked on creating the Docker containers, Docker images, tagging and pushing the images and Docker consoles for managing the application life cycle.
  • Performed RPM and YUM package installations, patch and other server management.
  • Perform server backup and recovery operations.
  • Installed Ansible Awx docker image and ran sample playbooks on Inventory.

Environment: RHEL, Centos, Ansible Tower, Nagios, Docker, LVM, nginx

Confidential, Salt Lake City, Utah

Linux Admin/Devops Engineer

Responsibilities:

  • Deploying Red Hat Linux, and windows servers in fast paced environment.
  • Maintenance of the Cloud Red Hat Linux infrastructure in the environment based on Open shift, docker, and kubernetes.
  • Creating the template for the Linux those are used for deploying for the environments.
  • Created Repositories for different customers and pushed data into repo’s using GitHub.
  • Experienced in tasks like managing User Accounts and Groups, managing Disks and File systems.
  • Maintain O&S Status Dashboard (Zabbix).
  • Checking the Logs for errors and troubleshoot errors related to it.
  • Experience in the installation of Salt for different Environments.
  • Manage logical Volume manager on Red hat Servers.
  • Trouble-shoot Continuous integration and automated deployment and management using Jenkins, chef, Docker.
  • Using Jenkins AWS Code Deploy plug-in to deploy to AWS
  • Migrated the current Linux environment to AWS/RHEL Linux environment and used auto scaling feature and Involved in Remediation and patching of Unix/Linux Servers.
  • Use Multi Factor Authentication to secure the AWS Account.
  • Experience with container based deployments using Docker, working with Docker images, Docker hub and Docker registries.
  • Created Jenkins Jobs to automate Application Builds.
  • Worked on firewall issues, start/stop/block of the IP address in IP table firewall.
  • Performed RPM and YUM package installations, patch and other server management.
  • Experience in writing scripts using Bash, perl Shell.
  • Automated the Build & Deployment environment end -to-end using Jenkins.
  • Perform server backup and recovery operations.
  • Performing Snapshots, Cloning, Migration VMware convertor, Virtual Infrastructure client.

Environment: RHEL, Windows, Bash, GitHub, Jenkins, Kubernetes, AWS, Zabbix

Confidential, MN

System Admin

Responsibilities

  • Installation and configuration of Red Hat Linux, Solaris new server builds as well as during the upgrade situations.
  • Experience with VMware vSphere ESXi.
  • Deploying Solaris, Red Hat Linux, and windows servers in fast paced environment.
  • System audit report like no. of logins, success & failures.
  • Remotely coping files using sftp, ftp, SCP, WinSCP, and FileZilla.
  • sCreated user roles and groups for securing the resources using local operating System authentication.
  • Created and modified VERITAS Cluster Service Groups and managed switchover from node to node and just as importantly, from interstate primary and DR sites
  • Configuration of Clusters using VERITAS Cluster Services in Solaris and Linux.
  • Used Puppet Enterprise edition for configuration management.
  • Wrote shell scripting to automate task across servers through Puppet.
  • Actively involved in configuring puppet open source with several third party’s applications and creating windows modules integrating Power Shell.
  • Experienced in tasks like managing User Accounts and Groups, managing Disks and File systems.
  • Installed and maintained Xenserver for single host upgrade.
  • Created Snapshots and cloned machines using Xenserver and xencenter.
  • Experience on deploying RHEL using Xenserver Hypervisor.
  • Manage logical Volume manager on Red hat Servers.
  • Installing, integrating and deployment of Centrify Active Directory in servers.
  • Configuring & monitoring DHCP server.
  • Experience in installing, integrating, tuning and troubleshooting Apache and Tomcat application server.
  • Taking backup using tar and recovering during the data loss.
  • Documenting the installation of third-party software’s.
  • Maintaining relations with project managers, DBA’s, Developers, Application support teams and operational support teams to facilitate effective project deployment.
  • Manage system installation, troubleshooting, maintenance, performance tuning, managing storage resources, network configuration to fit application and database requirements.
  • Performed regular installation of patches using RPM and YUM.
  • Maintained LVM, VxVM and SVM file systems along with NFS.
  • Migrated Centrify configuration to samba winbind to authorize and authenticate users of the domain to have access to the servers.
  • Performed application installation and management on Linux servers for applications like JBoss, Oracle
  • Troubleshooting of day to day system and user problems various Servers on windows and Linux both.

Environment: UNIX, RHEL, Windows Servers, ESXI, VMware VCenter & vSphere, Jenkins. Puppet, GIT, VERITAS, LVM, NFS, NIS, DIG, netstat, lookup, tcp, dump, Bash, Shell, Tomcat and Apache.

Confidential, EGAN, MN

System Admin

Responsibilities

  • Implemented Red Hat Clustering for Apache Web Servers, Puppet, Git, and SVN.
  • Experience in vSphere /ESXi deployment and management.
  • Day to day system administration to support 100+ Server in Production in development environments.
  • Integrated ESXi hypervisor with openstack.
  • Installation and deployment of Centrify Active Directory in servers.
  • Created, modified and updated the OU in Active Directory.
  • Experienced in TCP/IP, firewall, IP tables, dns and other networking issues.
  • Addition of users, groups and computers in Active Directory.
  • Primary support to all kind of issues for All of Unix and Linux
  • Worked with Red Hat for finding root cause on panic issues
  • Installation and configuration of SUDO package accomplished successfully across various UNIX platforms.
  • Server build and configuration management for Linux and Centos in SaaS Lab environment.
  • Experience in updating and patching of cloud applications using SaaS
  • Limiting user account privileges using SUDOERS.
  • Advance Scripting skills in Perl and Bash Shell.
  • Installation and configuration of Web /Application Server Tomcat and Apache
  • Implementing appropriate permissions for files and folders and Managing Users and Groups
  • Troubleshooting of day to day system and user problems various Servers on different platforms.
  • Familiarity with configuring and using a Configuration Management product for Linux servers (e.g. Cobbler)
  • Servers support included NFS, NIS, LDAP, NTP, FTP, users setup/troubleshooting.
  • Installed OS patch clusters and 3rd party application patches
  • Monitoring Disk space, adjust VXVM Configuration& add space as and when needed
  • Working knowledge of Remedy ticketing system.
  • Worked on the configuration of server monitoring tool like Nagios, Zabbix.
  • Monitoring and install or updates patch software’s, firmware, and security patches for all applications in installed infrastructure.
  • Creation and Maintenance of User Accounts file systems and successfully created logins IDs on considerable number of servers
  • Administrated DHCP, DNS and Samba services in Linux.
  • Configuration, Administration and maintenance of NFS, DNS, NIS on Linux Servers.
  • Working on evaluating new hardware and software’s.
  • Provide 24x7 on-call /Remote Support for UNIX Production Problems.
  • Responsible for Installation of various Hardware Components on various servers.
  • Responsible in building and startup shell scripts, managing the automation of CRON jobs
  • Responsible production support of LDAP, Domain users, Users and groups and given appropriate permissions, shares and privilege to access LAN and Domain environment.
  • Manage Virtual Machine Clones and Templates, plan and implement VMware Fault Tolerance
  • Familiar with backup and restore of VMware host server configuration, Virtual Machine backup, snapshot, P2V-V2V conversation with VMware converter and with other third-party converters, Patch updating, monitoring/reporting, SSH and SNMP and notification of alerts.
  • Installed and implemented Manage Engine monitoring application and configured SNMP and WMI on Servers and other network devices for reporting and alerts notifications.
  • Installed and Tested VMware Site Recovery Manager (SRM) for the disaster recovery and managed recovery plans
  • Participated in the migration planning, developing, testing and moving the migration process onto full-fledged production network

Environment: RHEL 5, Unix, NFS, Web Sphere, Web Logic, JBoss, Tomcat, DNS, netstat, nslookup, DIG, SMTP, MYSQL, RDBMS, samba Winbind, LAMP, Kron, Bash.

Confidential, Dallas, TX

Linux Administrator

Responsibilities

  • Administration and maintenance of Red hat Linux
  • Worked on Oracle and MySQL Databases and performed performance tuning and troubleshooting.
  • Worked on User administration setup, maintaining account, Monitor system performance.
  • Activities include user administration, startup and shutdown scripts, crontab, file system maintenance, backup scripting and automation using Perl, shell scripting (bash, ksh) for Red Hat Linux systems.
  • Experience in system Software installation and configuration of NFS shares, Auto-Mounter, DHCP and LDAP
  • Manage logical Volume manager on Red hat Servers.
  • Troubleshooting day-to-day server related issues and problems in terms of operating system, applications and network
  • Experience in migrating old server to HP Blade system server.
  • Configure RAID mirroring on Linux platform
  • Maintained and monitoring System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues
  • Configuration and Administration of Load balancers and F5's, taking servers in / out of rotation.
  • Experience in installing, integrating, tuning and troubleshooting Apache and Tomcat application server.
  • Performed application installation and management on Linux servers for applications like JBoss, Oracle
  • Managing IT department's LAMP stack and configuration management.
  • Provided documentation, development and management of web products and interfaces for retail processing. Programmed user interfaces that combined System platform with LAMP.
  • Configuring, administering and troubleshooting of NFS, AutoFS (Direct and Indirect Maps), NIS (master, slave and client) and DNS in multi-platform networks.
  • Worked on the configuration of mail server using Send mail.
  • Installation of SAMBA server for interface between Linux servers and Windows servers to share files.
  • Install and configure SSH to enable secure access to the servers.
  • Modified the Linux kernel to add tracing probes for Configuration access tool.
  • Environment, Command line, Current working directory, root directory, executed command.
  • Experience in Shell scripting bash to automate system administration jobs

Environment: RHEL, Solaris, IBM AIX, ESX, kick start, usfdump, NFS, VERITAS Volume Manager, Web Sphere, Web Logic, JBoss, Tomcat, DNS, netstat, nslookup, DIG, SMTP, MYSQL, RDBMS, samba Winbind, LAMP, Kron, Bash.

Confidential

Linux Administrator

Responsibilities

  • Automated installation of Linux servers using Kick start and Installation of Solaris using Flash, live upgrades and Jumpstart Servers.
  • Creating and managing file systems, Creating and managing Logical volumes in Linux and VERITAS Volume manager in Solaris & Linux.
  • Installation of patches and packages using RPM and YUM in Red hat Linux and Suse Linux and using patched and pkgadd in Operating System.
  • Usage of Service Management Facility for enabling, disabling and troubleshooting services in maintenance mode.
  • Experience with configuring and Installing Zones for running applications in different zones in Solaris.
  • Modified Kernel parameters to improve the server performance in both Solaris and Linux.
  • Providing Statistics on Hard Disk Usage.
  • Backups of systems and restoration using Net Backup on both Solaris and Linux.
  • Creating Disk Volumes, Installed and Configured RAID controllers RAID 0, RAID 1 and RAID 5.
  • Installation of HBA drivers and Upgrading of HBA cards before the move.
  • Installed, configured and maintained Apache/Tomcat Web Server.
  • Installed and configured NFS, NIS and FTP Servers.
  • Bash Shell Scripting for job automation.
  • Understanding and experience on TCP/IP networking in Solaris and Linux Systems.
  • Performance tuning and monitoring of Servers in Solaris, Linux.
  • Supporting Customers on a real-time remedy ticketing System for solving online operational issues.
  • Experience with the Change Management tool for reporting and resolving issues.

Environment: Solaris, Red Hat Enterprise Linux, Windows, SVM/LVM, VMware ESX Server, NFS, Samba, OpenLDAP, SQUID, Oracle 8i, bash, shell, Bugzilla.

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