SUMMARY:

• Over 7 years of experience specialized in System Administration working on Red hat Linux, Ubuntu Linux, AIX, and Windows environments
• Good Experience with Linux Servers builds and Automation of server builds
• Knowledge of Dell servers and IBM P - Series
• Experience in administering AIX & Linux
• Experience in Installation, Configuration, Backup, Recovery, Maintenance, Support of AIX & Linux
• Experience in Installing, upgrading and configuring RedHat Linux 3.x, 4.x, 5.x using Kickstart Servers and Interactive Installation
• Experience in Creation and managing user accounts, security, rights, disk space and process monitoring in AIX and Red hat Linux.
• Installation and upgradation of Packages and Patches configuration mgmt., version control, service pack. & reviewing connectivity issue regarding security problem.
• Experience in installation and maintenance of IBM AIX 5.3/6.1/7.1
• Experience in AIX System LVM, with filesystems, paging space, dump devices, resizing Dump devices
• Experienced in configuring networks using smit mktcpip and smit chinet
• Knowledge of networking (TCP/IP, Ethernet), DHCP, NIS, DNS, NFS
• Experienced in working with SAN to allocate disks and troubleshoot path issues
• Experienced in working with Business Units to plan and implement Disaster Recovery
• Experience performing upgrades from OS 5.3 to 6.1 and 7.1
• Experienced in using sysback to backup and restore mksysbs, datavgs and appvgs
• Experience with Storage array migrations
• Experience performing storage migrations
• Experience restoring servers using mksysb lppsource through NIM master
• Experience in virtualization and configuration utilizing IBM HMC with PowerVM
• Experience to use NIM to install, manage, troubleshoot and restore LPARs
• Experience Decommissioning servers
• Experience on working with multiple ticket tools, including in house, USD, Maximo, SBM, Remedy ticketing tool, to generated and solve tickets
• Experience in configuration of NIS, NIS+, DNS, DHCP, NFS, LDAP, SAMBA, postfix, sendmail, ftp, remote access, security management and Security trouble shooting skills
• Worked with Database administrators to tune kernel for Oracle installations
• Experience with Veritas Volume Manager (VxVM), Veritas File System (VxFS), Veritas Net Backup, Veritas Clustering with SAN, NAS environment
• Experience in administering VMware Infrastructure Client 3.5 and vSphere 4.0
• Experience in Installation of Oracle and MYSQL
• Experience writing shell scripts to automate the administrative tasks and management using cron and enabling system logging, network logging of servers for maintenance, performance tuning, testing
• Experience working in SAN environment like EMC Symmetrix and Clariion series arrays
• Creating Linux Virtual Machines using VMware Virtual Center and AIX LPARs on P550 and P570
• Exposure to CI tools like Jenkins, Bamboo, Cruise Control
• Experience in Installing Firmware Upgrades, kernel patches, systems configuration, performance tuning on Unix/Linux systems
• Good understanding of F5’s Big IP hardware to load balance web and middle-tier servers
• Hands on experience using Chef and Puppet tools to automate

WORK EXPERIENCE:

Confidential, St. Louis, MO

Unix/Linux Systems Administrator

• Provided support for implementation troubleshooting, root cause analysis, and updates of applications on servers
• Effectively prioritize workload and consistently deliver assignments on-time
• Worked with different business units to meet timelines for patching and migration projects
• OS Installations and configuration use NIM to install, manage, troubleshoot and restore LPARs
• Create mksysb backup, and build fresh AIX server using mksysb and lppsources from NIM
• Creating and cloning Linux Virtual Machines templates using VMware Virtual Client 3.5 and migrating servers between ESX hosts
• Build and maintain Dev servers, PT servers, and Prod servers
• Experience working with IBM HTTP/Apache Web Servers/Apache Tomcat in AIX and Linux environment.
• RPM package installations, patch and server management
• Setting up network environments using TCP/IP
• Configured networks using smit mktcpip and smit chinet
• Fine tuning of Servers
• Experience in AIX System LVM, with filesystems, paging space, dump devices, resizing Dump devices
• Troubleshooting errpt and coordinating with IBM System Support Center for hardware replacement as needed.
• Administration of RHEL and AS 5, 6, 7 which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
• Hands on experience in installing, integrating, tuning and troubleshooting Apache, Chef, puppet, bash, perl, python, Tomcat, WebSphere and WebLogic application server.
• Installation of various flavors of Linux operating system like redhat, fedora, centos, Ubuntu.
• Assist Developers with isolation and resolution of application issues which are service, operating system, or hardware related
• Installing RedHat Linux using KickStart and applying security polices for hardening the server based on the company policies
• Installing, configuring WebLogic 10.3, Apache and integrating.
• Experience in VMware ESX Server environments
• Implemented automated Backup management solution through Shell scripting SSH & RSYNC
• Partitioning according to requirements, creating new file systems or growing existing one over the hard drives and managing file systems.
• Set up user and group login ID's, password, resolving permissions issues, user and group quota
• Worked with IBM support to get custom ifixes to fix OS bugs
• Submit and resolve Change Management tickets

Confidential, Phoenix, AZ

Linux/AIX Administrator

• Coordinate with Architects, PMs, Storage team, Application team, Network team, Managers, Stake holders for completion and on time delivery of projects
• Request Change management and deliver per approval
• Coordinate with App owners, DBAs, users, developers and vendors to resolve issues
• DR testing Quarterly
• Hands on experience in troubleshooting with hardware and software support resources locally and remote to diagnose issues
• Built LPARS using mksysb and lppsources from NIM
• Assist Developers with isolation and resolution of application issues which are service, operating system, or hardware related.
• Managed user accounts and access via active directory, exchange, and group policy.
• Involved in development, user acceptance, and performance testing of production & disaster recovery servers.
• Served as the point of contact for administration of the MySQL servers.
• Performed storage migrations.
• Insured all the correct users and Security Groups were added to the replacement systems from Active Directory.
• Worked on restructuring the Active Directory user structure to having Security groups and members within that group added to the different Domain Servers.
• Built and patched Fresh AIX 7.1 LPARS
• Implemented SUDO, SSH, security tools
• Mirrored rootvg on servers with internal disks
• Create mksysb backup using nim
• Build and maintain Dev, PT, and Prod servers
• Built HA cluster servers and Supported POWERHA Environments
• Upgraded AIX 6.1 to AIX 7.1 using NIM
• Worked on HMC 6 and 7 and Creating LPARs using HMC
• Created VG, LVM, with filesystems, paging space, dump devices, and resizing Dump Devices
• Build GPFS Cluster servers
• Installation of GPFS, maintenance, and create GPFS FS
• GPFS NSD disk migration
• Setting up network environments using TCP/IP
• Worked on Fiber networks and cabling.
• RPM package installations, patch and another server management.
• Provided support to EMC SAN team from server aspect.
• Hands on experience using Chef and Puppet tools to automate.
• Creating profiles, manifests for new servers, and pushing them to servers using puppet.
• 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 and performed data-center operations including rack mounting, cabling
• Experienced in Troubleshooting critical hardware and software issues and day-to-day user trouble ticket.
• Use SBM ticketing tool for raising tickets and resolving tickets.

Confidential

AIX/Linux Administrator

• Hands on experience in Incident Management.
• Applied appropriate support packages/patches to maintain system integrity.
• Performed capacity analysis, monitored and controlled disk space usage on systems.
• Software and Hardware upgrades of AIX systems
• Adding servers to domain and managing the groups and user in AD, installing and configuring Sendmail.
• Installation and configuring of SUN and Linux servers
• Software and Hardware upgrades of AIX systems
• Installation and administration of RHEL 4, 5, 6, and Cent OS 5
• Configured Kickstart server and updating/applying patches to the servers using Redhat Satellite server
• Creating, cloning Linux Virtual Machines, templates using VMware Virtual Client 3.5 and migrating servers between ESX hosts
• Assisted in configuring the application servers with other components such as database, web servers, LDAP directory, Active Directory, BEA Web logic etc.
• Responsible for maintenance of development tools
• Installed, configured AIX 5.3, 6.1 on IBM p, x series servers using NIM, creating LPARs using HMC on p series servers
• Creating virtual machines using Xen and deploying OS, managing hardware.
• Creating, installing, WebLogic Application servers, deploying WAR, JAR files on them installed on Linux servers
• Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers
• Worked on resolving production issues and documenting Root Cause Analysis and updating the tickets using BMC Remedy
• Fine tuning of Servers and configuring networks for optimum performance
• Setting up network environments using TCP/IP, NIS, NFS, DNS, SNMP agents, DHCP and Proxy
• Installation, maintenance and administration of Oracle and Db2 Server on Sun Servers
• Hands on experience in installing, integrating, tuning and troubleshooting Apache, Tomcat, WebSphere and WebLogic application server
• Installed and Configured WebSphere Application Servers on Linux and AIX
• Regular disk management like adding / replacing hot swappable drives on existing servers/workstations
• Expertise in backup/restore with tar