SUMMARY

• Determined, energetic and diligent professional with 4+ years of Linux System administrations, seeking an opportunity to utilize talent in a professional capacity employing comprehensive knowledge and vast experience with a proven record of System Administration and Server Virtualization.
• Worked closely with development, storage, database, networking and customer support teams to meet business and technical demands.
• Strong experience in System Administration, Installation, Upgrading, Patches, Configuration, Troubleshooting, Security, Backup, Performance Monitoring on Red Hat Enterprise Linux systems.
• Experienced in DNS, NIS, NFS, FTP, LDAP, remote access, security management, and system troubleshooting skills
• Independent problem solving, good team player with strong interpersonal and communication skills.
• Strong technical background in Storage, Disk Management, Logical Volume Management (LVM).
• Experience in implementing security standards on Linux Servers using IPtables, SElinux and Firewall.
• Experience in developing kernel modules in Linux/Unix platforms. Strong in LVM Performance monitoring, Error logging, Diagnostics, Fine - tuning and Backup management.
• Creating and maintaining users/groups, profiles, security, rights, crontabs, file system maintenance disk space and process monitoring.
• Strong experience in configuring network services like DHCP, SAMBA, FTP HTTP, TCP/IP, TCP Wrappers, SSH, Web Server, and Firewall.

PROFESSIONAL EXPERIENCE

Confidential

Linux system Administrator

Responsibilities:

• Installation, setup and configuration of RHEL, CentOS and VMware Virtual Infrastructure products
• Performed day to day Linux administration such as user accounts, logon scripts, directory services, file system shares, and permissions etc.
• Supported and Assisted Data Center Clients with different server issues both customers owned and company owned servers.
• Work with system, network, security, and storage engineering teams to prepare and configure new servers for the environment.
• Performance monitoring of the servers using UPTIME, NETSTAT, TOP, FREE, VMSTAT and IOSTAT.
• Resolved problems with MBR, GRUB using rescue booting mode.
• Managed security SELinux attributes.
• Added, modified and deleted users and group's accounts on local and LDAP servers, created privileged sudo users.
• Configured local storages using advanced partitioning schemes such as LVM, fdisk, gdisk, part probe.
• Created tools to automate daily tasks such as Crontab.
• Configured and maintained Network File Sharing (NFS), autofs and ftp.
• Installed, configured Apache HTTP, DNS, NFS, Autofs, FTP, SFTP, DHCP, NIS, LDAP.
• Network troubleshooting using ping, nslookup, traceroute, telnet, tcpdump, net stat, ethtool.
• Installed and upgraded software packages from Red Hat Network, a remote repository or from the local file system. Created custom YUM repositories.
• Monitored servers and all services using Nagios.
• Managed configurations and automation using Puppet

Confidential

Linux Systems Administrator

Responsibilities:

• Created Local Yum Repositories to support Package Management with Yum and RPM.
• Configured very secured FTP daemon (vsftpd) to support an FTP based Yum repository
• Installed and configured NFS - based Yum repository
• Performed installation of Red hat Linux servers on the Virtual Machines
• Configured network interfaces on VM with Hostname, IP and Gateway records
• Modified server configuration files to establish default run levels based on system requirements
• Performed File System Usage Monitoring using various Linux Commands and GUI tools
• Developed system documentation to support application requirements and deployment
• Applied SELinux to enforcing mode for server and file system protection
• Enabled IP Tables Firewalls, disabled services and blocked ports to ensure system security
• Created users, groups and project collaboration directories using the command line
• Configured and deployed various Linux Distributions such as Red hat, Centos, Ubuntu, Fedora
• Managed File Systems and Users on Red Hat Enterprise Linux 6 platform
• Created and configured multiple Virtual Machines on a bare metal Red hat installation platform
• Supported VMware infrastructure in a large enterprise environment

Confidential 

Systems Administrator

Responsibilities:

• Installed RHEL 5/6 on servers and set up volumes
• Installed packages on servers.
• Configured and managed Server networking.
• Performed user accounts administration.
• Managed Password aging configuration on servers
• Configured and mounted NFS resources..
• Disabled direct ssh root login on servers.
• 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
• Configured Apache HTTP and Apache Tomcat Servers
• Configure NTP client on servers to synchronize time zone with the NTP server
• 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