Linux Systems Administrator Resume Beltsville, Maryland - Hire IT People

SUMMARY:

Experience Linux System Administrator seeking challenging and fast paced environment with ability to learn new technology to solve functional issues.
6 years of IT experience and about 5 years of hands - on experience in system design, construction, deployment, administration and support of /Linux/servers and networks
Strong administration and troubleshooting skills in Linux environment
Very confident with Apache http, Apache Tomcat, NFS, FTP and LVM on Linux
Good understanding of network concepts and protocols
Well organized with strong problem solving and good communication skills as well as ability to work both in teams and independently

TECHNICAL SKILL AND APPLICATIONS:

Operating Systems: Red Hat Enterprise Linux 5/6

Web Server: Apache http, Apache Tomcat

Virtualization: VMware ESXi

EXPERIENCE:

Confidential, Beltsville, Maryland

Linux Systems Administrator

Responsibilities:

Planning, installation, configuration, management and troubleshooting of Red Hat Enterprise Linux platform
Install and manage virtual Linux machines on VMWare ESXi
Work closely with software developers as needed to troubleshoot and resolve production outage
Create mount points for database administrators for Oracle database install
Creation and management of approved user accounts and groups
Manage filesystems utilization using script scheduled as cron job
Maintain user-based security via password aging
Maintain file system and host security using chmod, chown, chgrp, immutable bit, iptables and tcp wrappers
Turn-off unused services on systems to strengthen host security
Disabled direct ssh root login on servers
Configure and manage TCP/IP networking on RHEL systems
Troubleshoot and resolved networking issues
Perform software package installation, upgrades and updates using yum and rpm commands
Apply system patches and updates
Manage filesystems using fdisk and LVM
Perform critical system administration tasks from Single user mode
Create directory symbolic links for users as requested
Install and configure Apache httpd server to be used by developer to host web applications
Configured multiple websites on one Apache http server using virtualHost containers
Install and configure Apache tomcat server for developers
Configure NFS server and mount exported nfs resources at the client side
Configured and managed vsftp servers
Change root password on all server from centralized puppet master server
Manage user access to svn repositories
Manage RHEL servers from RHEL satellite server web interface
Update /etc/issue file for system notifications and warnings on user logins
Setup secured passwordless ssh authentication on servers using ssh keys
Schedule and maintain cron jobs
Monitored and controlled system processes using top, renice, kill etc
Tune Linux kernel using kernel parameters as requested by database administrator
Configured Kernel Parameters for Oracle database install
Performed system logs administration to detect and resolve issues
Monitored system logs and activity on all servers
Resolved systems and process issues reported by Nagios
Responded to and closed out Remedy tickets
Documented server baseline and procedures
Performed file system backups and restores using local archiving utilities to include tar, gzip
Sends weekly report to management on overall system performance and health checks
Took turns for 24/7 production support

Confidential, Elkridge, Maryland

System Administrator

Responsibilities:

Installing and configuring all the Linux servers in the network per specifications of clients.
Installed and Administered patches and updates
Installed packages on servers.
Configured and managed Server networking.
Troubleshoot and resolved TCP/IP networking issues.
Performed user accounts administration.
Managed Password aging configuration on servers
Configured and mounted NFS resources.
Maintained file systems and host security.
Disabled direct ssh root login on servers.
Performed security hardening on dedicated servers by turning off unused services
Setup ssh keys for secured key-based authentication
Monitored and controlled system processes.
Monitored and Managed Server performance using associated tools.
Resolved systems and processes issues reported by Nagios
Performed logs administration to detect and resolve system errors
Managed systems storages using LVM
Customize user shell environment using shell initialization files
Configured Apache HTTP and Apache Tomcat Servers
Configure DNS client on servers
Utilized cron to schedule and run jobs
Offered various supports to software developers
Responded to and closed out Remedy tickets
Developed functional and technical documentation
Work as part of a team and provide 7x24 support when required

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Linux Systems Administrator Resume

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