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.
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.
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.