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Linux System Administrator Resume

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MarylanD

SUMMARY:

  • System Administrator with over 3 years’ experience in providing technical solutions through high - quality service and support.
  • Seeking position in a challenging and rewarding tech environment where I can expand upon my existing skills while contributing to a lively IT team.

TECHNICAL SKILLS:

Operating Systems/Platforms: Window 7/8/10, Window Server 2000, 2003, 2008, Linux (Fedora, CentOS and RedHat).

Applications/Packages: Apache, Tomcat, Nagios, Check MK, Thruk, DHCP, NFS, VMware ESXi, FTP, Samba, OMD, PhpMyAdmin, Jira, Confluence, NagVis, WINSCP, Putty, vSphere, Jenkins, Microsoft Office, Shinken, FileZilla, DNS etc.

Language: Bash Scripting.

PROFESSIONAL EXPERIENCE:

Confidential, Maryland

Linux System Administrator

Responsibilities:

  • Administration of local and remote servers using the SSH utility.
  • Experience in writing basic Shell scripts using bash for applications, backup and scheduling.
  • Daily administration and management of servers, applications and file systems.
  • Troubleshooting OS / Hardware related issues and monitor server health on a day-to-day basis.
  • Experienced with the virtual build, installation, configuration, and maintenance of Linux RedHat 6 both locally or over network.
  • Set up user and group login ID's, network configuration, passwords, and resolution of permission and access related issues.
  • Install, configure, maintain, and troubleshoot enterprise-wide Apache web servers and Tomcat application containers in a large RedHat Linux/CentOS environment.
  • Participate in application coordination launching process.
  • Monitoring via Nagios, Check MK, NagVis, Thruk, Shinken to ensure consistently aware of application, infrastructure, and network health status.
  • Working on volume management, disk management using logical volume manager. Performed collaborative root cause analysis to resolve software and network issues in production.
  • Applying OS patch and upgrade in a multi-platform (RedHat/CentOS) environment on a regular scheduled basis.
  • Hardened various Linux RedHat 6 Servers utilizing security policies and CIS Security Benchmark based template.
  • Collaborated with Network Admin in Installing, configuring, securing, and implementing slave replication on DNS BIND servers.
  • Knowledge of core system and security applications and protocols such as TCP/IP, DNS and SSH.
  • Regularly confers with system administrator and users regarding current and prospective system changes.
  • Created and edited Standard Operating Procedures (SOP) and documented various performed activities.
  • Explain technical issues and resolutions to application teams and business teams.
Confidential, Maryland

Linux System Administration

Responsibilities:

  • Installation, Maintenance, Administration and troubleshooting of RedHat Enterprise Linux.
  • Performed automated installations of Operating System using kick-start for RedHat Enterprise Linux 5/6.
  • Remote monitoring and management of server hardware. Fixed Vulnerability findings reported via security team server audits/reports found utilizing Nessus.
  • Involved in Server sizing and identifying, recommending optimal server hardware based on User requirements.
  • Built virtualized Linux servers on ESXi, vSphere servers to host multiple applications on same chassis across different server hosts.
  • Installation and administration of RedHat & CentOS using RPM and YUM package installations, patch and other server management.
  • Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
  • Installation and configuration Apache and Tomcat and supporting them on Linux production servers.
  • Troubleshooting Linux network, security related issues, capturing packets using tools such as IPTables, TCPwrappers.
  • Worked on resolving production issues and documenting root cause analysis and updating the tickets using Jira.
  • Installation and Configuration of SSH, NFS, FTP, TCP/IP, DHCP, DNS.
Confidential, MD

Jr Linux System Administrator

Responsibilities:

  • Installation, configuration and administration of 200+ RedHat Linux servers and support for Servers using kickstart based network installation.
  • Password integrity and access restriction of all users on all critical servers.
  • Limiting of access to live and production environments to only authorized personnel.
  • Administration of user accounts adding and deleting accounts and assigning permission and ownership to various user groups.
  • Installation, configuration and deployment of Enterprise servers.
  • Management and maintenance of NFS and Samba shares.
  • Management of DNS servers and DHCP servers.
  • Daily generation of performance reports to executive management, on the utilization and performance of all business-critical servers.
  • Patch (package) Management on the RedHat servers through RHN network.
  • Web server configuration, deployment and support in the nation-wide branch network. (Branch Web servers running on CentOS Linux flavor).
  • Installation, configuration and administration of Jira and MySQL servers.
  • Installation, configuration and maintenance Apache server for Intranet specifications.
  • Installation, Configuration and Troubleshooting of Linux and Windows Servers.
  • Support of users (branches) in the nation-wide branch network of the bank.

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