SUMMARY:

• 8 years of experience into Unix Systems Administration, Linux Engineering, Server builds and Application Support on UNIX platforms such as Red Hat Linux, Oracle Solaris and AIX.
• Upgrading and configuring Red Hat 5.x, 6.x,7.x and SUN Solaris 8, 9, 10, 11 using various technologies like Wan boot, Jumpstart and Kick start Installation.
• Designed end to end automation of infrastructure and continuous delivery of the applications by integrating cloud formation scripts, Jenkins and Chef cookbooks and recipes.
• Performed DevOps for Linux platforms.
• Worked on Data - Center operations support and migration across Unix and Linux platforms.
• Experience in Creation and managing user accounts, security, rights, disk space and process monitoring in Solaris and Red hat Linux.
• Manage the firewall deployment, rules migrations, and firewall Administration.
• Experienced in implementing and maintaining an Apache Tomcat /MySQL/PHP, LDAP, LAMP web service environment.
• Experience with VERITAS Volume Manager (VxVM), VERITAS File System (VxFS), VERITAS Net Backup, VERITAS Clustering with SAN, NAS environment.
• Experience in installing, configuring and implementing the RAID technologies using various tools like VxVM and Solaris Volume Manager.
• Assist with design of core scripts to automate SPLUNK maintenance and alerting tasks. Support SPLUNK on UNIX, Linux and Windows-based platforms. Assist with automation of processes and procedures.
• Experience in Server monitoring, capacity planning, application monitoring with the help of Nagios, Cacti and Puppet.
• Installation and up gradation of Packages and Patches configuration mgmt, version control, service pack & reviewing connectivity issue regarding security problem.
• Experience in configuration of NIS, NIS+, DNS, DHCP, NFS, LDAP, SAMBA, SQUID, postfix, send mail, FTP, remote access, security management and Security trouble shooting skills.
• Expertise in scripting for automation, and monitoring using Shell,Python & Perl scripts.
• Experience in VMware. Installed and monitored Virtual environments with ESX/ESXi servers and Virtual Center 4.X.
• Expert in Linux Performance monitoring, kernel tuning, Load balancing, health checks and maintaining compliance with specifications.
• Experience in Installing Firmware Upgrades, kernel patches, systems configuration, performance tuning on Unix/Linux systems.

PROFESSIONAL EXPERIENCE:

Confidential - Irving, TX

Unix/Linux system Administrator/Engineer

Responsibilities:

• Worked on Data-Center operations support and migration across Unix and Linux platforms.
• Adherence to CATE build standards and Citi Information Security standards.
• Built and production support of servers on Red Hat Enterprise Linux, Solaris (with little bit of AIX in the mix)
• Planned and implemented assigned projects, change management, on-call support, and hotline bridge participation.
• Production Handovers & Procedural checks.
• Root Cause Analysis of infrastructure related issues.
• Installed, configured and maintained DNS servers, Mail servers, FTP servers, NFS,SMB, NIS+ and Samba Web servers on Linux platforms and Sun Solaris.
• Installed and configured Disk and file system management using Logical Volume Manager (LVM) and VERITAS VxVM on Linux systems, ZFS on Solaris.
• Implemented Chef, Ansible and Nagios.
• Customer liaison providing support and guidance to technology teams.
• Project-driven application deployments
• Performed patching of RHEL using yum, up2date and rpm.
• Patches Solaris servers using pkg updates, ABE (Alternate Boot Environment), Recommeded by CATE.
• Experience with VMware Virtualization using ESX hypervisor of VSphere.
• Creation, Installation and administration of Red Hat Virtual machines in VMware Environment.
• Experience in troubleshoot Linux server issues (CPU, Memory, Network bottlenecks)
• Create, extend, reduce and administration of Logical Volume Manager (LVM) in RHEL environment.
• Creation of SAN File System on Red Hat Linux and Solaris OS, through physical HBAs as well as vHBAs.
• Configuration of Network bonding, teaming, IPMP, Ethernet trunking.
• Provide overall management of the SPLUNK platform.
• Administration of repetitive Jobs using Cron scheduling, and using bash Scripts to accomplish the task on multiple servers.
• Monitoring and kernel tuning for optimization, including Virtual Memory, CPU, RAID in Linux, AIX and Solaris servers.
• DR testing and documentation.
• Created and Managed File Systems (CFS) for VCS & Sybase data bases.
• Building of Oracle RAC (Oracle Real Application Clusters) environment.
• Worked on web logic and MQ series configuration and application deployments.

Environment: Red hat Linux 6.x, Solaris 10,11, HP & Dell Servers, Oracle/DB2, VMware ESX 4.x, Autosys, VMware VSphere, ESX, Bash, Shell Scripting, DevOps.

Confidential - Irving, TX

Unix/Linux Administrator/ Engineer

Responsibilities:

• Worked on configurations and installations Linux and Solaris servers using Custom Jumpstart and Kick start.
• Installing Configuration and maintenance of Solaris 9/10/11, Red Hat Linux 4/5/6, SUSE 10.3, 11.1, AIX operating systems.
• Implemented Bash, Perl, Python scripting.
• Updating patches to keep servers updated against bugs present in the operating system using Red Hat Satellite Server, yum, etc.
• Installed packages using YUM and Red hat Package Manager (RPM) on various servers.
• Participated migration cutover meeting's, Build and deploy Linux hardware Nodes to host several KVM templates.
• Troubleshooting network administration, IIS configuration, DNS setup and modifications, firewall rule sets, local and distributed director, connectivity, and supporting applications.
• Worked with Red Hat Satellite Server which is used to push changes across various servers simultaneously.
• Worked exclusively on VMware virtual environment.
• Experience in using VMware VMotion to move VM’s from One Datacenter to another datacenter.
• Involved in installation and configuration of various Third party software onto servers.
• Installed, configured and provided support for Tivoli Monitoring software across various OS platforms like RHEL, AIX and Solaris.
• Performed the daily system administration tasks like managing system resources and end users support operations and security.
• Involved in ILMT Agent Deployments and Oracle/SQL Upgrade project which includes various UNIX builds of different OS platforms across various data centers.
• Create data retention policies and perform index administration, maintenance and optimization.
• Work with third party application, hosting and CDN providers to integrate data feeds to a centralized Splunk platform.
• Responsible for independent support of Tier 2 issues: reboots, start/stop services, reset Terminal Service and pc anywhere connections, and administrative server maintenance. Daily follow up with clients to ensure resolution of all issues.
• Used Logical Volume Manager for the management of Volumes including creation of physical and logical volumes on Linux.
• Coordinated with various cross functional teams across IT operations to make sure smooth functioning of projects.
• Working experience in configuration management systems Chef, Ansible.
• Develop, implement and update security principles supporting customer migrations,configurations and implementation.
• Worked closely with DBA Team in order to adjust kernel parameters as per requirements.
• Day to day resolution on Linux based issued though SMS ticketing system in compliance to SLA cycles.
• Performed application installation and management on Linux servers for applications like Web Sphere Application Server (WAS) 7, JBoss 4.2.x, 5.x, Sun JES Web Server 6.1, Oracle 10g, Sybase 12.5 etc.
• Automating many day to day tasks through Bash scripting.

Environment: Red hat Enterprise Linux 4.x/5.x/6.1, Solaris 8/ 9/10, Tibco, Tivoli Storage Manager, VMware ESX5, Tivoli Net backup, and Web sphere.

Confidential - San Jose, CA

Linux/Unix System Administrator

Responsibilities:

• Day to Day Unix Administration of 1000 servers.
• Handling the day-to-day Operations, Install software, apply patches, manage file systems, monitoring performance and troubleshoot alerts.
• Installed and configured VERITAS Volume Manager (VxVM), Disk and file system management through Veritas Volume Manager, Solaris Volume Manager and Solstice Disk Suite on Solaris and using Logical Volume Manager (LVM) for other flavors of UNIX.
• Managing Redhat Cluster, HPC environment etc.
• Automate repetitive tasks, deploy critical applications and manage change on several servers using Puppet.
• Build Yum and RPM repository Server for Development team to upload packages, Written UNIX Shell scripts for monitoring & clean up old files.
• Maintained virtual environments using VMware ESX 4.x Server and built various Linux servers on VMware servers.
• Responsible to solve technical Problems related System administration (Linux of Our Clients).
• Building & configuring Red Hat Linux systems over the network, implementing automated tasks through crontab, resolving tickets according to the priority basis.
• Handling LVM related tasks, Creating, resizing LVM, Veritas Volume manager and also managing Cluster environment using Veritas Cluster suite.
• Handling the day-to-day Operations, Troubleshooting& Solve Server Problems in LINUX.
• Installing and configuring Red Hat Linux locally or over the network-kick start- (nfs, ftp, http).
• Managed patches configuration, version control, service pack and reviews connectivity issues regarding security problems.
• User Administration (setup and maintaining accounts).
• Maintaining Server and Systems, provide IT support to User.
• Monitoring system performance, Server load and bandwidth issues.
• Work with DBAs on installation of DB, restoration and performance tuning.
• Installing open source application, search, analyze and develop new application for users.
• Updating Systems, Servers and client software's.
• Implement the policies for the users of the computer system and network.
• Regularly manage backup process for Server and Client data.
• Provided production support in an on-call rotation in a 24*7 environment.

Environment: Centos 5.7/6, Red Hat Linux 5.7/6, Ubuntu 10.04/10.10/11.10, Fedora 17, VMware, SAN(EMC, Hitachi), NAS (Netapp), Blade Logic, Veritas Volume Manager 4.1, Sun Enterprise Server(E2900, E4500, E6900), Bash, Java Script, Nagios.

Confidential

LINUX Administrator

Responsibilities:

• Involved in design, configuration, installation, implementation, management, maintain and support for the Corporate Linux servers RHEL 4.x, 5.x, SLES 9, CENTOS 5.x.
• Experience in Installing, configuring, and maintaining IBM Rational Clear Case and Rational Clear Quest on AIX platforms.
• Installation of patches and packages using RPM and YUM in Red hat Linux.
• Created and modified application related objects, created Profiles, users, roles and maintained system security.
• Installed and configured SAMBA server for Windows and Linux connectivity.
• Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
• Build Yum and RPM repository Server for Development team to upload packages, Written UNIX Shell scripts for monitoring & clean up old files.
• Modified Kernel parameters to improve the server performance in Linux.
• Experience in Developing KORN, BASH, PERL, Python shell scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation.
• Installed and configured Apache / Tomcat web server.
• Creation of Logical volumes (LVM) for Linux operating systems.
• Worked with DBA team for database performance issues, network related issues on Linux Servers.
• Created and modified users and groups with SUDO permission.
• Experienced in creating Logical Partitions (LPAR) on Tivoli Storage.
• Created users, manage user permissions, maintain User & File system quota on AIX and Linux servers.
• Backup configuration using IBM Tivoli Storage Manager for AIX Servers.
• Upgraded Red Hat Linux OS on Web sphere, JBOSS and Oracle database servers from V3, V4 to V5.
• Installation of Oracle 10G RAC with Cluster Ready Services (CRS) on Linux, creating database, creating Oracle users & export and importing database, creating role back segment etc.
• Monitored servers, switches, ports etc with Nagios monitoring tool.
• Experience in LVM, Kernel and performance tuning on IBM AIX and Red Hat Linux.
• Define/setup network protocols, Network File Services (NFS) and Network Information Services (NIS) on Linux and AIX servers.
• Performed security, users, group’s administration and daily backup and restore operations, networking service, performance, and resource monitoring.
• Maintained proper documentation of all the activities carried out during the project.

Environment: Red Hat 3.x, 4.x, 5.x, Solaris 8,9,10, Tivoli Storage Manager, VERITAS Net backup 4.5, Web Sphere Application Server 3.5/4.0.x, LDAP, DNS, SAN, NAS, Nagios 2.x, Web Logic 8.1, Oracle 9i/10g, Tivoli Storage Manager 5.x, VMware 2.x, Shell Scripting.