SUMMARY

• 8 plus years of experience in LINUX/AIX System Administration.
• Performed Linux administration on multiple distributions such as SUSE, REDHAT and Oracle Enterprise Linux as well as Centos.
• Experience in Administration of Linux 6/7/8.x (Redhat, SUSE), CentOS (6.x,7.x) Fedora and Ubuntu,
• Experienced in creating maintaining and managing LPARS, VIO with HMC console.
• Experience with PowerVM feature on AIX as well as LPM.
• Configure satellite server for Redhat Enterprise Linux.
• Experience with User Administration on Linux and AIX.
• Experience with ESX frame for Redhat Enterprise Linux.
• Performed patching and upgrades on Redhat using RPM.
• Experience with server administration with 800+ Linux servers.
• Experience in server management, security checks and day to day operation activities for a well renowned Insurance company.
• Performing different operations on LPARs - assigning /removing/moving resources to partitions dynamically.
• Extensive knowledge on HP Network Switches.
• Good working knowledge of HACMP and POWER HA.
• Experience with Oracle RAC and Veritas NetBackup on UNIX environment.
• Supported multiple applications and databases such as Oracle database, DB2, EPIMS, JBOSS, WebSphere, Cerner and Java application.
• Performed multiple disaster recovery successfully on UNIX platforms.
• Experience with Linux Firewalls and worked with Network engineer on various Linux networking tasks.
• Performed patching through BigFix on AIX servers.
• Extensive knowledge on Confidential Endpoint Manager and BigFix.
• Performed patching and upgrades on Redhat using RPM.
• Extensive knowledge on PCI and SOX regulations on UNIX systems.
• Experience with scripting such as shell and Perl.
• Extensive experience with working on Solaris Volume Manager (SVM), creating meta devices, soft partitions, mirroring the devices.
• Experienced in 550,570,575,590,595, P6 (550,570,690) and P7 System Software Maintenance.
• Participated in new HACMP build project. Have configured two node HACMP cluster from the scratch.
• Installed patches, efix and SSL certificates to all web servers.
• Involved on build project for AIX and Linux on large enterprise environment.
• Experience with automation tools for Redhat such as puppet, Ansible and Chef.
• Performed migrations from 5.3 to 6.1 and 7.1 for AIX.
• Experienced Confidential and EMC and configuring SAN on AIX and Linux Servers.
• Provided production support in an on-call rotation in a 24x7 environment and Datacenter Support.
• Experienced in working with Network Engineers to install, manage, and configure NAS based storage and insure overall system and network security.
• Experienced in installing and supporting Power path and SDD drivers on AIX servers.
• Built, configured, upgraded, migrated and administrated, decommissioned, Confidential AIX v6.1 TL9 SP1/v7.1 TL1 SP6, TL2 SP1, TL3 SP1; and HACMP v6.1 SP1, SP3 / PowerHA v7.1.2 on pSeries servers Power7 & Power8 platforms in SAN ( Confidential DS8100 & V7000 Volume Controller)
• Experienced in documenting the physical server position in Datacenter.
• Experienced in planning the space for new AIX and LINUX Servers in the Datacenter and updating the Excel Sheet with the LPAR configuration and physical location in the Datacenter.
• Experienced in EMC clarion, Symmetrix, Confidential DS400, DS 6000, DS 8000.
• Experience in Creation and managing user accounts, security, rights, disk space and process monitoring in Red Hat Linux and Solaris.

TECHNICAL SKILLS

Operating Systems: Confidential AIX 5.3/6.1,7.1, RHEL 6 and 7, CentOS 6.x and 7.x

Platform: Confidential, PSeries P4, P5, P6, P7 - 550,570,575,590,595,660, 670, 690,750,770

Other Skills: Virtualization, Amazon Web Services, PowerHA, TSM, DB2, Oracle, WebSphere, HMC, NIM, SHELL, PERL.

System Administration II: Problem Determination and experienced in data center

Microsoft Tools: Word, Excel, PowerPoint, etc.

PROFESSIONAL EXPERIENCE

Confidential - Bloomington, IL

Sr. LINUX Systems Administrator

Responsibilities:

• Installation & Configurations of Red Hat Enterprise Linux, Fedora Linux and CentOS, Maintenance & System Administration. (RPM, YUM) Configured volumes Using LVMs for increasing of disk space.
• Designed, configured, and supported BIND DNS, DHCP and SNMP on Linux machines.
• Familiar with TCP/IP network configuration.
• Configured LDAP on Red Hat for authorization and authentication.
• Upgraded Ubuntu OS from 12.04 to 14.04 using RAM disk
• Responsible for PostgreSQL databases backup, recovery & upgrades.
• Installed and configured Linux/Unix and Windows operating systems on VMware server.
• Analyzed the performance of resources like CPU, Memory, Disk and Swap by using commands like prstat, vmstat, sar, iostat, swap.
• Implemented and maintained services running on Linux and server platforms deployed in AWS EC2 and Open Stack based private cloud.
• Provided DBA support to Quest Diagnostics application development. Both on DB2 and Oracle.
• Database activities such as Installation, Patching, Implementing Backup and Recovery Strategy, User administration.
• Installed packages for Ubuntu system using apt-get.
• Deployed Puppet, Puppet Dashboard, and Puppet DB for configuration management to existing infrastructure.
• Expertise in Preparing, arranging and testing the Splunk search strings and operational strings.
• Worked on large datasets to generate insights by using Splunk.
• Ubuntu operating system development - including package building, patching, and installation
• Managed and provided support to all UNIX servers and Redhat Linux OS that runs Oracle databases, WebSphere, and Net Backup enterprise.
• Recovery of the database: Whenever there is a major crash (like a disk crash) recovery of the database from production backups has to be carried out.
• Configuration of RedHat Cluster Server, Service Guard from the scratch and maintained service group/packages for fail and redundancy purpose.
• Tracked and reported on the PCI compliance status of each payment process so that enterprise level compliance can be determined.
• Expert in installing SPLUNK apps for Linux and UNIX environments.
• Build and deploy Linux hardware Nodes to host several KVM templates.
• Knowledge in Oracle, MySQL, Apache/Tomcat or Web Logic/JBoss Application Server.
• Prepared Windows/Unix security standard preparation document and system check procedures to keep the systems secured & updated.
• Configuring, administering and troubleshooting of NFS, NIS (master, slave and client) and DNS (Bind 8.2.x and8.3.x) in multi-platform networks.
• Expertise in performance tuning consists of I/O, Memory, Access plan and SQL tuning of production databases
• Installing, maintaining and upgrading the OS (Ubuntu) and other software
• Backend Solution, Day to day sys Admin & Monitoring, File sys mgmt.& disk mgmt.,
• Wrote UNIX shell scripts for automated installations, to extract logs using Bash, and Python.
• UNIX based file system design, user mgmt., kernel mgmt., Device mgmt., Memory mgmt., Backup & Recovery, Security mgmt., Fine tuning & Auditing, Performance Analysis and disk Management.
• Implemented Network Monitor system to proactively monitor the company’s system & network status and to receive alerts in case of system & network failures.
• Installation, Configuration and troubleshooting of Red Hat / Centos Linux.
• Hands on experience on troubleshooting Boot Loaders like GRUB.
• Implementation and troubleshooting of network services like NFS, FTP, NTP, Telnet, SSH.
• Maintained a NIS environment for both QA and production. Configure NIS clients and troubleshoot NIS related problems.
• Securing the Linux Server and Network Services using TCP/IP Wrapper and Net filter (iptables).
• Instrumental in System Kernel compilation and configuration.

Environment: RedHat Enterprise Linux, Fedora Linux, Centos, LDAP, VERITAS Volume Manager, Shell scriptingAwk & SedPython, Unix/Windows Workstations, AWS EC2, OpenStack, RedHat Cluster Server, VMWare.

Confidential - AZ

Senior Red Hat LINUX Systems Administrator/Engineer

Responsibilities:

• Built Linux based high performance cluster and used tools to verify corrections.
• Racking, stacking of systems, hardware reconfiguration and debugging.
• Helped Company to move data center.
• Replicate infrastructure so that it will work on other location.
• Perform day to day tasks on Linux administration including SUSE, REDHAT and Oracle Enterprise Linux.
• Apply Security patches on prod servers which have DB2, EPIMS, and ORACLE apps running by scheduling a downtime.
• Experience in managing and troubleshooting RHEL Operating system.
• Experience with Redhat automation tools Ansible as well as puppet and Chef.
• Manage user accounts on Linux
• Performed patching and upgrades on Redhat using RPM.
• Experience with Disk Storage system including EMC, San and Confidential .
• Built Ubuntu servers and provided support on AIX, Linux and HPUX. Other than this I worked toward SAN side and did zoning on Hitachi, Nimble and pure Storage.
• Performed multiple disaster recovery successfully on UNIX platforms.
• Responsible for building Linux server using VMWare.
• Performed administration tasks for AIX.
• Supported full life cycle of the project from build, configuration, development, testing and post-production support
• Worked on Linux based (Centos 6.3, 7.1) high performance cluster and used tools to verify corrections.
• Racking, stacking of systems, hardware reconfiguration and debugging.
• Supported LDAP server and day-to-day lab operations.
• Tested volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager (LVM)
• Tested the installation of Patches related to OS and proactive maintenance which involved suggesting upgrading the latest patch.
• Writing Shell Scripts for system/application, Application monitoring, Data feeds files transfers & log file analysis.
• Performed testing day-to-day system administration tasks including server monitoring, back up, patch management and performance tuning
• Experience in installation, configuration, tuning, security, backup, recovery and upgrades of LINUX
• Exported file systems and fixing any mounting issues.
• File system - creation and managing, checking file system integrity, working with fsck, logical volume planning and configuration.

Confidential, Auburn Hills, MI

Sr. System Administrator

Responsibilities:

• Installation, Configuration and Administration of multiple Confidential machines (PSeries) and Redhat Servers running on AIX 5.1/5.2 and 6.x respectively. Performed NIM Installation for AIX Server and Kickstart for RHEL.
• Installation, Configuration and Maintenance of Red Hat based infrastructure hosts.
• Proposed solutions, and migration plan; worked with stakeholders to validate/accept, and wrote the automation to migrate hosts from ESX, existing Openstack clusters, and AWS.
• Monitoring and maintaining all SDLC tools for Digital Devops production environment.
• Managing smooth operation of SDLC Tools like Bamboo, Jira, Stash and Confluence.
• Configured Red Hat servers for Disk space management on multiple production servers.
• Hands on experience working with production, DR and QA servers at multiple data centers.
• Involved in configuring scripts to backup data from production server to DR (Disaster Recovery) servers over the network with the help of Bash and Perl scripting.
• Worked on DevOps tools such as Git, Maven, Jenkins, and Puppet.
• Used Openstack and AWS cloud services to launch Linux and windows machines, created security groups and written basic PowerShell scripts to take backups and mount network shared drives.
• Registered different client servers to master Redhat Satellite Server.
• Deployed puppet for configuration management to existing infrastructure.
• Create manifests for installing applications and installing Network Control System (tail f)
• Created manifests for installing Docker and Zend server.
• Assembling Puppet Master, Agent and Database servers on multiple Red Hat Enterprise Linux Platforms.
• Troubleshooting faults resulting from failed backup and restore on QA servers.
• Worked on yum repository for installing packages from a centralized repo server.
• Configured various Production servers for password-less authentication on Red Hat servers.
• Management of Red Hat Linux user accounts, groups, directories and file permissions.
• Performance monitoring using Sar, Iostat, VMstat and MPstat on servers.
• Performed Kernel tuning with the sysctl and installed packages with yum and rpm.
• Performed Disk management with the help of LVM (Logical Volume Manager).
• Configured Log rotation at application level for all SDLC Tools.
• Involved in applying new patches and packages on Application Servers and handled issues.
• Password-less setup and agent forwarding done for SSH login using ssh-keygen tool.
• Accomplished team assignment for achieving DB migration from HSQL to MySQL for Bamboo SDLC tool.
• Registered steps at Confluence Wiki pages involved for data migration on production servers and also testing procedures before and after migration.

Environment: Linux Red Hat Infrastructure, Confidential blade servers, Apache 1.2/1.3/2.x, Logical Volume Manager, Veritas NetBackup 5.x/6.0/6.5 SAN Multipathing (MPIO, HDLM, PowerPath), Puppet, AWS, VM ESX 4.x/3.x/2.x, RHEL 6.x/5.x/4.x and Windows 2003/NT.

Confidential - Salem, OR

Linux System Administrator

Responsibilities:

• Installation, Configuration and Maintenance of Red Hat / Debian Servers at multiple Data Centers.
• Configured Red Hat Kickstart server for installing multiple production servers.
• Configuration and administration of DNS, LDAP, NFS, NIS, NIS+ and Sendmail on Red Hat Linux/Debian Servers.
• Hands on experience working with production servers at multiple data centers.
• Involved in writing scripts to migrate consumer data from one production server to another production server over the network with the help of Bash and Perl scripting.
• Logged events from forced crash dumps and troubleshooting server issues.
• Configured yum repository server for installing packages from a centralized server.
• Configured various Production servers for password-less authentication on Red Hat servers.
• Installed and configured DCHP server to give IP leases to production servers.
• Management of RedHat Linux user accounts, groups, directories and file permissions.
• Implemented the Clustering Topology that meets High Availability and Failover requirement for performance and functionality.
• Writing Shell script for various day to day System Administration automation tasks.
• Deployed Puppet and Puppet DB for configuration management to existing infrastructure.
• Performance monitoring using Sar, Iostat, VMstat and MPstat on servers.
• Performed Kernel tuning with the sysctl and installed packages with yum and rpm.
• Performed Disk management with the help of LVM (Logical Volume Manager).
• Configuration and Administration of Apache Web Server and SSL.
• Installed open-ssl and generated self-signed keys for internal use.
• Password-less setup and agent-forwarding done for SSH login using ssh-keygen tool.
• Established and maintained network users, user environment, directories, and security.
• Documented strongly the steps involved for data migration on production servers and also testing procedures before the migration.
• Provided 24/7 on call support on Linux Production Servers. Responsible for maintaining security on RedHat Linux.

Environment: Sun Fire 250 and 450 Series, Confidential blade servers, Websphere 5.x/6.x, Apache 1.2/1.3/2.x, iPlanet, Oracle 11g/10g/9i, Logical Volume Manager, Veritas netbackup 5.x/6.0/6.5 SAN Multipathing (MPIO, HDLM, Powerpath), VM ESX 4.x/3.x/2.x, RHEL 6.x/5.x/4.x and Windows 2003/NT.

Confidential - Menomonee Falls, WI

Linux System Administrator

Responsibilities:

• Installed and Configured Red Hat Linux 5.x/4.x Kickstart and Solaris jumpstart Servers.
• Installed and Configured OpenVMS for testing and production servers.
• Administered disk groups, subdisks, plexes, and volumes using Veritas volume manager
• Installing hardware, Sun & 3rd party software and latest OS and patches to keep the latest and most up to date software configurations.
• Involved in OS Up gradation project for patching Linux and SUN servers to latest versions.
• Installed/Configured Websphere 5.x/6.x and other Application Servers.
• Administration of Websphere Application Server 6.x with Network Deployment, and Extension Deployment, on RedHat Linux.
• Installation and configuration of Red Hat Linux cluster nodes.
• Worked with Oracle Database Administrators and reviewed the required maintenance tasks.
• Installed RPM packages on RedHat Linux Servers, updated with the help of yum and up2date.
• Management of RedHat Linux and Solaris user accounts, groups, directories and file permissions.
• Configuration of DHCP Server on Linux to get the IP Addresses Dynamically.
• Configuration and administration of DNS, LDAP, NFS, NIS, NIS+ and Sendmail in RedHat Linux and Sun Solaris.
• Configuration and Maintenance of AutoFs in Linux.
• Configured SAMBA to get access of Linux shared resources from Windows.
• Day to day Linux server hardware support, problem and change ticket implementations, composing scripts, OS builds & upgrades along with day-to-day Storage & UNIX Administration.
• Tested and implemented Root disk mirroring.
• Performance Monitoring and Tuning done using iostat, vmstat and netstat.
• Configuration and Administration of Apache Web Server and SSL.
• Creating and managing VM’s through Virtual Centre and VI client.
• Responsible for Monitoring and fine-tuning system and network performance for Linux systems.
• Installed Configured EMC disk devices in Linux servers.
• System Backup using tar for local systems and Veritas Netbackup for enterprise wide backup and recovery.
• Documenting each step and testing procedures before the migration.
• Provided 24/7 on call support on UNIX Production Servers. Responsible for maintaining UNIX security on Red Hat Linux.

Environment: Sun Fire 250 and 450 Series, Confidential blade servers, Websphere 5.x/6.x, Apache 1.2/1.3/2.x, iPlanet, Oracle 11g/10g/9i, Logical Volume Manager, Veritas netbackup 5.x/6.0, SAN Multipathing (MPIO, HDLM, Powerpath), OpenVMS 7.x/8.x, VM ESX 3.x/2.x, RHEL 5.x/4.x and Windows 2003/NT.

Confidential - St. Louis, MO

System Administrator

Responsibilities:

• Installed, Configured and Maintained RedHat Linux on Intel Pentium servers.
• Performed and configured Kickstart installation over network and Custom Jumpstart Installation over network and maintained Install server, Boot server, Configuration server and Profile servers.
• Configuration of Logical Domains (LDOMS) on Sun Solaris 10.
• Upgraded the Server’s operating system from RedHat Linux 5.1 to RedHat Linux 5.2.
• Installed, configured and maintained the Apache web server on Sun Solaris and RedHat Linux for development and staging also involved in configuration management, software deployment, change management, performance monitoring and application maintenance.
• Implemented the Clustering Topology that meets High Availability and Failover requirement for performance and functionality.
• Installing and configuration and maintenance of Veritas Net Backup 6.0/5.x.
• Worked on Multipathing in SAN environment.
• Creation of Logical volumes (LVM) for RedHat Linux and Veritas Volume Manager.
• Installation and customization of Window 2003 servers.
• Configuration and Administration of NFS, NIS, NIS+, LDAP, DNS, Samba and Sendmail Servers.
• Working knowledge of VMware (Virtualization).
• Upgrading VMware server 2.x to 3.x.
• Installed RPM, Packages on Linux Servers and Sun Solaris Servers.
• Installed and configured the Netscape/iPlanet (Sun One) Web servers & setup firewall filtering with Squid Proxy server for web caching on Sun Solaris.
• Validated monitored and Analyzed Batch Jobs.
• Backup Schedules for Linux Servers using DLT Tape drives.
• Performance monitoring using Sar, Iostat, VMstat and MPstat on servers.
• Logging events and forcing crash dumps, securing servers and troubleshooting issues.
• Troubleshooting and resolving of problems related to hardware, operating systems, third party applications and scripts.
• Initiating Backups on daily basis and monitoring the scheduled backups.
• Provided on call support for RedHat Linux and Sun Solaris server environments.
• Worked on SUSE Linux with installation and configuration of network services such as NFS, Apache, DNS, and NIS.

Environment: Redhat Linux AS3.0, AS4.0, VXFS, Veritas Volume Manager 3.5/4.x, Jboss 4.0, Veritas Net backup 5.x/6.0, iPlanet, DNS, NIS, NFS, Sendmail, Oracle 10g, Websphere 5.x/6.x, VMware 3.x/2.x and HACMP.