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Linux System Administrator Resume

Dulles, VirginiA

SUMMARY:

  • am looking for a challenging and rewarding career opportunity, where I may apply my six years of experience which include six years of experience as Systems Administrator. Integrating all flavors of Linux and windows in diverse heterogeneous environments. I am a organized and a dedicated team player with great communication, management, analytical and organizational skills. Have good skills in performance Tuning. As a systems Administrator I was responsible for running day - to-day operations of a mission-critical Linux Systems. I was involved in performing upgrades, manage configuration changes, maintain System integrity and monitor cluster performance in a multi-tenancy environment.I feel that I can be an asset to your team with my experience.

PROFESSIONAL EXPERIENCE:

Confidential, Dulles Virginia

Linux System Administrator

  • Puppet Upgrade - Upgraded Modules to be up to date with puppet language guidelines
  • Implemented puppet validate along with PDK
  • Upgrade Puppet Agent 2.7 to 5.5
  • Validated and rewrote existing scripts for updated puppet code
  • Experience with puppet open source
  • Installing and Configuring Puppet for configuration management.Worked on Puppet to organize and execute configuration plans on servers & worked on modules of Puppet for its manifests on servers.
  • Create, maintain and manage automated build processes for environment using Puppet.
  • Integrated machines onto satellite 5.6 using bootstrap scripts
  • Installed Sophos Anti-virus for Linux
  • RedHat patching through satellite
  • Created Spreadsheet that is now being implemented for future budget reports along with helping to keep up with compliance
  • Working along team with LDAP Migration to AD
  • Created Channels for Red Hat Satellite for patching process
  • Used bootstrap scripts to add systems to Satellite
  • Created scripts to sync channels with older versions
  • Installed Sophos antivirus for Linux Agents onto linux to connect with sophos console
  • Documented Puppet upgrade Process
  • Created documentation for resources such as puppet and Sophos
  • Held daily Kanban meeting with team, to offer support and guidance with daily workload
  • Collaborated with different teams for a inventory overhaul ( created inventory checklist for budget analysis )
  • Implemented Ansible, Created playbooks, roles and tasks
  • Collaborated with patching process team
  • User management using AD
  • Bash Scripting ( Pushed scripts through Satellite )
  • Server Decommissioning
  • Provisioned Server
  • Used Active Directory for User-Management

Confidential, Houston Texas

Linux Systems Administrator / Engineer

  • Installation, Configuration and OS upgrades and Patches on RHEL 5/6/7 as well as CentOS.
  • Implemented and administered VMware ESX for running the Windows, Centos and Red Hat Linux Servers on development and test servers.
  • Creating volume groups, Logical volumes and extending them using LVM.
  • Responsible for setting up new instances, migrating existing services from physical servers to AWS cloud.
  • Configure, monitor and maintain AWS VPC environment.
  • Working with SAN team for exporting shared volumes and mounting shared volumes.
  • Installing and Configuring Puppet for configuration management.
  • Responsible for configuring networking concepts like NIS, NFS, SAMBA, LDAP, SSH, SFTP, SNMP, DNS, DHCP, troubleshooting network problems such as TCP/IP supporting users in solving their problems.
  • Configuring, Managing and Scheduling CRONTABs for App Accounts and Backup management on a regular basis.
  • Installing and configuring Apache Web Server.
  • Worked on Puppet to organize and execute configuration plans on servers & worked on modules of Puppet for its manifests on servers.
  • Create, maintain and manage automated build processes for AWS environment using Puppet.
  • Developed scripts for automating administration tasks like customizing user environment and performance monitoring and tuning with nfsstat, netstat, iostat, and vmstat.
  • Created Bash shell scripts to monitor system resources and system maintenance and performed administrative tasks such as System startup/shutdown and Backup strategy.
  • Configuring and troubleshooting LAN and TCP/IP issues.
  • Promptly resolve issues ranging from hardware and software issues to desktop start up and server performance issues.
  • Managed shared NFS mounting and unmounting NFS server, NFS client on remote machine, sharing remote file folder, starting and stopping the NFS services.
  • Installing NetBackup server, clients, and ensuring clients are being backed up regularly.
  • Ensuring backup of all the servers and clients using Symantec netbackup software, restoring data in the event of emergency.
  • Automating Administration tasks with Puppet Enterprise Edison using predetermined manifests to configure, update and install servers as well as complete support for applications and systems and user support. Complete Package management and monitoring inventory of the Nodes. Understanding of Puppet system infrastructure open source and enterprise versions, installation, configuration files and ports.
  • Duties also involve the response to user tickets over 500+ on site and lot more remote problems.
  • Managed the User and Application Account creations, deletions, and setting up sudo access for DBA and application account access.
  • Administered security, users, group administration and daily backup and restore operations, networking service, performance and resource monitoring and Performed disaster recovery management procedures.
  • Administration responsibilities include user, group, disk, and security management.
  • Worked with team for database performance issues, network related issues and with vendors for hardware related issues.
  • Installed and configured monitoring tools Nagios, Splunk for monitoring the network bandwidth and the hard drives status.
  • Assist senior network administrators in resolving network issue such as troubleshooting network connectivity related issues.
  • Improve performance by resolving login related tickets and resetting password frequently.
  • Installing and maintaining the operating system and related software products.
  • Monitor system processes, load averages and general health of systems.
  • Used Nexus and RT to make sure all the tasks at hand were completed

Confidential

Linux Systems Administrator

  • Working on CentOS and Red Hat, Installing and upgrading Operating systems.
  • Setting up Idrac and ILO IP addresses to Dell and HP.
  • Duties spanned from user accounts creation, modification, disk management, adding and removing packages and patches.
  • Monitoring servers process using tool like Nagios.
  • Monitoring AWS resources using cloud watch.
  • Responsible for maintenance, enhancements and production support.
  • Managing and maintain AWS EC2, VPC, IAM,S3 Bucket, AMI, Route 53.
  • Working with SAN team for exporting shared volumes and mounting shared volumes. Installing and Configuring Puppet
  • Setting RAID levels on Dell, IBM and HP systems.
  • Resolving Level 1 and Level 2 issues on Linux systems.
  • Working with vendors to order new hardware.
  • Setting up network printers and performing backups and restores using NetBackup as needed.
  • Responsible for documenting client’s day to day issues and resolutions using internal Wiki site.
  • Setting up NFS, NIS Servers and clients.
  • Plan, organize, and direct sustainment activities. Establish work standards, methods, and controls for preventative, scheduled, and unscheduled maintenance actions.
  • Cloning VM machines.
  • Install and deployed Red Hat Enterprise, CentOS and installation of packages and patches for Red hat servers.
  • Configuration and administration on standard UNIX services like SSH, LDAP, SSL, NFS, Sudo and FTP. for configuration management.
  • Responsible for configuring networking concepts like NIS, NFS, SAMBA, LDAP, SSH, SFTP, SNMP, DNS, DHCP, troubleshooting network problems such as TCP/IP.
  • Managed shared NFS, mounting and unmounting NFS server, NFS client on remote machine, sharing remote file folder, starting and stopping the NFS services.
  • Good understanding of file System Ext3, Ext4, NFS.
  • Worked with the business and database team creating design documents, screen designs, process flows and data definitions and working prototype.

TECHNICAL SKILLS

  • Red Hat Linux 6/7, CentOS 6/7 and Windows 2008/2012.
  • Bash Scripting.
  • Experience with managing VMware/EXSI in production environments.
  • Vulnerability Management.
  • Network troubleshooting.
  • SQL Server installation and administration.
  • Apache web server: PHP configuration, Virtual hosting.
  • LAN / TCP/IP / UDP / DNS / HTTP / SSL / DHCP/ NTP / FTP.
  • Manage LVM and storage like NAS,ISCSI, DAS.
  • Virtualization Technologies: VM Ware, AWS
  • Red Hat Satellite.
  • AWS: EBS, EC2, AMI, VPC, IAM, Route 53, S3 Bucket.
  • Backup and Recovery
  • Excellent communication skills
  • Puppet Enterprise and Puppet Open Source

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