SUMMARY:

• Worked in infrastructure team on installation, configuration and administration of RHEL 5.x/6.x/7, SUSE Linux, CentOS 5.x/6.x and IBM AIX 6.x/7.x
• Experience in Package Management using Red Hat RPM/YUM.
• Experience in System Administration, Server builds, Installs, Upgrades, Patches, Migration, Troubleshooting, Backup, Disaster Recovery and Performance Monitoring on Red Hat Linux Systems.
• Experience NIC bonding configuration in Linux systems to increase the bandwidth or redundancy based on requirement by the application.
• Experience in implementation and maintenance of Httpd, NFS and FTP skills.
• Knowledge in writing Shell and Bash Scripts.
• Hands - on experience in diagnosing, troubleshooting various networking, hardware & Linux/ UNIX server's services issues and performing preventive maintenance.
• Day to day administration of Production, QA, Development and Test environment systems. 24x7 on-call support.
• Excellent in configuring NIS, NIS+, NFS, SMTP, DNS, DHCP, Mail Server, LDAP, Apache, Tomcat and Samba Server in a heterogeneous environment.
• Experience in Volume management, Disk Management, Logical Volume manager (LVM) File system Tuning and growing.
• Good knowledge in implementing Continuous Integration using Jenkin s and GIT.
• Implemented and enhanced UNIX shell scripts using Bash and Python Scripting.
• Experience in Linux Performance monitoring and kernel tuning and Load balancing.
• Working knowledge of VMWare vCenter .
• Good experience on ticketing tools like Service Now, BMC Remedy.
• Patch Management and Backup Management for Red hat Linux.
• Setting up and maintaining Continuous Integration Server, Jenkins.
• Experience in working with the Version Control Systems such as Git, Git-Hub.

TECHNICAL SKILLS:

Operating systems: Red Hat Linux (RHEL 3/4/5/6), SUSE (9/10), Cent OS (5.x,6.x,7.x),Solaris 10/9/8, HP-UX (11.11, 11.23, 11.31), IBM AIX (5.1, 5.3),, Windows 2003/vista, 7,8,10.

DevOps Tools: Puppet, Jenkins,Ansible

Server Hardware: HP ProLiant DL 585/360/385/585 G2, Sun Fire 3800/4800/6800, IBM e-Server Regatta P690, P570, RS6000, IBM/HP/DELL Blade Servers.

Networking: TCP/IP, NFS, AutoFS, NIS, DNS, DHCP, LAN, WAN

Storage hardware: Brocade FC Switches, Net App Filers, Qlogic and Emulex FC HBAs, iSCSI/ FC Storage arrays, RAID Storage arrays, DLT and LTO Tape Libraries, Hitachi enterprise systems.

Virtualization Tools: VMware .

Security: Secure Shells, SSH, SCP, SUDO.

Scripting language: Shell Scripting and Python

Ticketing Tools: BMC Remedy, Service now

Protocols: TCP/IP, SNMP, SMTP, TELNET, HTTP

PROFESSIONAL EXPERIENCE:

Confidential - Dearborn MI

Linux Administrator

Responsibilities:

• Performed installation, configuration and tuning of RedHat EnterpriseLinux servers.
• Maintained and configured VMware ESXi server and Vcenter via web access.
• Installed, monitored and managed several virtual hosts on VMware ESXi using the software vSphere client.
• Installed virtual machines using kikstart files.
• Responsible for daily system administration tasks in heterogeneous Linux/Unix environments such as user/ group management, applying patches, disk management, job scheduling and packages installation (using RPM and YUM) on Linux/Unix Environment
• Created and configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager (LVM) commands.
• Developing BASH and Python scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation.
• User Administration by creating, maintaining User's accounts and groups, setting up User environments.
• Monitored ser server and application performance&tuning via various commands ( vmstat, top, iostat)
• Installing and configuring Apache and supporting them on Linux production servers.
• Configuring and administrating of Swap space.
• Setup, configured and maintained NFS, NIS, and TCP/IP network, setting up SSH and SCP features between hosts.
• Created Puppet Master and Agents machines in the production environment for deploying, updating the software in automation process.
• Configured and automated the Jenkins and build jobs for Continuous Integration.
• Worked on version controller like GIT and continuous integration, automated deployment & management using Jenkins.
• Used Service Now to track tickets.
• Worked on 24x7 oncall support and weekend support.

Environment: RedHat Enterprise Linux 7.x, VMware ESXi,Git, Jenkins, NFS, Service Now, Apache, Puppet

Confidential - Virginia Beach, VA

Linux Administrator

Responsibilities:

• Creating, cloning Linux Virtual Machines, templates using VMware vSphere Client 5.0 and migrating servers between ESXi hosts.
• Mass Build of Linux servers using Kickstartand interactive installation methods.
• Patch Management, Package Installation/Upgrades and Kernel upgrades.
• Administrating & Installing OS Packages & Patches using YUM, and RPM.
• Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
• Worked on virtual and physical Linux hosts and involved in day to day administrative activities such as maintaining user accounts, password management, providing advanced file permissions to specific users etc.
• Configuring distributed file systems and administering NFS server and NFS clients as per system user requirements.
• Responsible for scheduling various regular, future, queue tasks using crontab.
• Build and upgraded puppet master for each DEV, UAT andPROD environments.
• Implemented the monitoring tools like Nagios to monitor services like CPU, Hard drive, Memory utilization, Users, HTTP, SSH etc.
• Setup, configured and maintained NFS, NIS, and TCP/IP network, setting up SSH and SCP features between hosts.
• Performed Installation, configuration and Administration ofVERITAS Volume Manager.
• Created Puppet Master and Agents in the production environment for deploying, updating the software in automation process.
• Configured RedHat Satellite Server for patching and configuring servers to update patches from the satellite server.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Developed bash shell scripts to automate routine activities.
• Network trouble shooting and Worked closely with vendors on Hardware Problems, software fixes Provided support for break/fix incidents.
• Responsible for monitoring and working on problem tickets (Service Now). Following it up with business and technical teams, and ensuring the problem is successfully resolved
• Provided afterhours and weekend support to facilitate the issues in the production environment.

Environment: RedHat Linux 6.x/7.x, VMware ESXi, Veritas Volume Manager 4.0, Nagios,NFS, RedHat Satellite, Service Now, Puppet.

Confidential - Naperville, IL

Linux Administrator

Responsibilities:

• Administration of 1000 + RHEL 5.x/6.x servers which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
• Implementation and administration of VMware ESXi, vCenter for running RedHat Linux Servers on Production and Development.
• Installed RedHat Linux using kickstart and applying security polices for hardening the server based on the company policies.
• Experience in Installing Packages with RPM and YUM.
• ConfiguredDNS, DHCP, NIS, NFS in RedHat Enterprise Linux 5.x/6. x.
• Experienced with Java application servers such as Tomcat andWebSphere Application Server Community Edition.
• Worked in Agile Project Management environment to deliver high priority, high-quality work.
• Created file systems using NFS and mounted it. Created devices and special files using mknod.
• Managed daily system administration cases using BMC Remedy Help Desk.
• Installed, configured and efficiently managed Disk and File system through Veritas Volume Manager.
• Clustering and Cluster management on the servers using VERITAS Cluster Server 2.0 & 3.5.
• Backup Scheduling using the full and incremental backups on tapes and taking backup/restores using ufsdump and ufsrestore commands.
• Handled Performance Monitoring in File system CPU, Memory and Process in all the UNIX Servers.
• Integration tools configuration (Jenkins).
• Configured RedHat Cluster and supported GFS files system.
• Problems & performance issues; installed latest patches for Linux and performed RedHat Linux Kernel Tuning.
• Day-to-day administration on RHEL 5.x/6.x which includes Installation, upgrade & loading patch management & packages.
• Worked 24 x 7 on-call support on rotation basis for production environment.

Environment: Linux 6.x/5.x, Oracle 10g, ESX,Shell Script, VM ware,RedHat Satellite,Veritas Volume Manager (VVM), LDAP, Tomcat, WebSphere.

Confidential - St. Louis, MO

Linux Administrator

Responsibilities:

• Performed installation, configuration and tuning of RedHat EnterpriseLinux servers.
• Created users and groups and restrict them using Basic, ACLs and Advanced File Permissions apart from the File Server level permissions.
• Installed and updated required packages using the central repository (YUM) and RPM.
• Shared files between Linux boxes and windows using the WinSCP, a secure FTP, SCP client for Microsoft Windows.
• Installed PXE servers, Kickstart configurations for automatic Linux Installation.
• Involved in corporate level auditing compliances like system security, network security and installation of recommended patches.
• Monitored the Linux servers on a regular basis and was into tuning them accordingly to optimize performance.
• Performed configuration of standard Linux and network protocols, such as SMTP, DHCP,DNS, LDAP, NFS, HTTP, SNMP and others.
• Configured EMC Storage and troubleshoot the problem with Storage.
• Installed and configured Puppet, a configuration management tool for automating several processes in the DevOps environment.
• Created Puppet Master and Agents in the production environment for deploying, updating the software in automation process.
• Installed and used "GIT" a version controller in puppet master for monitoring and updating the regular changes in the project.
• Performed log management by using Alert log and Sys log.
• Performed daily backup of files using manual commands like tar, scp, dd andcpio.
• Worked on automation of processes using Crontab and shell scripting using Bash.
• Worked on FTP servers for sending and receiving files between local and remote servers.
• Handled network related services like FTP, NFS,TCP/IP.

Environment: Red Hat Enterprise Linux 5.x/6.x, EMC, VMware, GIT, Puppet, WinSCP, LDAP.

Confidential, Columbus, OH

Unix/Linux Administrator

Responsibilities:

• Installed and configuredRedHat Linux 5.x/6.x using Kick Start server.
• Installation and configuration ESX hosts. Making new virtual machines, with Linux RedHat server, making templates, cloning VMs using VMware Virtual Client.
• Created and configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager (LVM) commands.
• Installing and updating packages using RPM.
• Configuration and installation of DHCP, DNS, web (Apache), mail (SMTP, IMAP, POP3) and file servers on Linux servers.
• Collaborate on monitoring and troubleshooting Servers using various third-party tools like Nagios.
• Managed users, disks, groups administration, File Sharing Permissions, backup and restore operations, and networking service.
• Automate configuration through Puppet.
• Responsible for installing, integrating, tuning and troubleshooting WebSphereapplication server.
• Lockdown the local accounts to secure the environment using NIS.
• Setup, configured and maintained NFS, NIS, and TCP/IP network, setting up SSH and SCP features between hosts.
• Maintenance, performance, tuning and testing of servers for proper functioning.
• Managing routine backup, scheduling jobs, enabling system logging and network logging.
• Troubleshooting tickets using BMC remedy.
• Worked with DBAs on installation of Oracle database.
• Installed and configured Oracle RAC 11g for database purpose.
• Setup user and group login ID's, password and network configuration.
• Developed bash shell scripts to automate routine activities.

Environment: Red-Hat Linux Enterprise servers 5.x/6.x, Oracle 11g, Veritas volume manager, WebSphere application server, puppet.

Confidential

Jr.System Administrator

Responsibilities:

• Installation and configuration of RedHat Linux 5.x.
• System administration, maintenance and monitoring various day-to-day operations.
• Experience on File system issues and Disk management
• Configuring and maintaining the Active Directory.
• Aging groups and user accounts assigned permissions and ownerships to users.
• Installation and configuring the DNS, DHCP servers and assigning IP addresses to client hosts.
• File systems management and consistency checks.
• User management, Creating and managing user account, groups and access levels
• Creating volume groups and Logical volumes on Linux
• Taking the backup using tar command on Linux machines.
• Scheduling jobs using crontab - editing, removing and checking cron logs.
• Troubleshooting issues related with disk utilization, CPU utilization, Memory consumptions etc.
• Package management using RPM and YUM.
• Providing 24x7 support to the organization

Environment: Red Hat Enterprise Linux 4.x/5.x, VMware ESX, DNS, DHCP, NFS, SMTP, Apache.