PROFESSIONAL SUMMARY:

• Over 8 Years of specialized IT experience in AIX/Linux/Solaris/Windows/Devops/cloud.
• Administration and storage experience in administering Hitachi Enterprise storage arrays.
• Experienced in installation, configuration, administration, troubleshooting, tuning, security, backup, recovery and upgrades of IBM AIX 5x, 6x, 7x, Win NT/2000 Server & Linux (Red Hat 5.5/6.3/7) in a large environment.
• Extensive working experience of managing, troubleshooting IBM Power7, Power6 and Power5 (P520/P550/P5 55A/p5 52A/P750/P710) series systems.
• Knowledge on P2V and V2V migrations of Linux hosts.
• Expert in UNIX shell scripting - ksh, bash, sh and knowledge of PERL scripting.
• Experience in using console access mediums: XSCF, ILO, ILOM, ALOM and concentrators like lantronix.
• Experience in Installation and configuration of VMware ESX server 3.5 on Dell and HP Proliant servers and configured VMs for Solaris x86 and Linux.
• Experience in configuration of LUNs on Sun StorEdge arrays and knowledge of SAN infrastructure.
• Working experience with cloud infrastructure of AWS (Amazon Web Services) and computing AMI virtual machines on Elastic Compute Cloud (EC2).
• Regularly updated all software and operating systems on the instances running in EC2, to eliminate security loopholes.
• Experience in administering Webserver Apache and Application server JBoss.
• Working knowledge of various SMTP Servers - Sendmail 8.12.11, 8.14.2, Postfix 2.x, and Exchange 2000/2003.
• Experience in monitoring the availability & performance of AIX, Linux Servers through tools like vmstat, netstat, svmon, nmon, lparstat, vmstat and iostat.
• Excellent written and verbal communication skills.
• Ability to operate effectively on a 24x7 basis in crisis situations.
• Well Versed in Installing, Configuring Application Servers like IBM Websphere 3.5/4.0/5.0, Tomcat, Apache and Web Servers like IBM HTTP Web Server, MQ, and Apache WebServer, Jboss on AIX and Linux.
• Configuration and maintenance of NFS, Samba, Sendmail, LDAP, DNS, DHCP and Networking with TCP/IP on Linux and AIX.
• Experience in performance tuning, trouble shooting and resolving network issues, related to the servers.
• Administration of VERITAS volume manager.
• Experience in diagnosing and resolving TCP/IP connection problems.
• Disaster Recovery Planning.
• Experience with Solaris virtual technologies Zones and LDoms.
• Experience with switches and routers from various vendors like Cisco, Dell, and HP.
• Experience in installing, configuring, upgrading and troubleshooting HACMP V5/V6.
• Experience in making Disaster Recovery and Disaster Contingency Plans; DR with SunGard, SRDF devices.
• Expertise in migration from HACMP V 5.5 to HACMP V 6.1.
• Knowledge on TSM backups.
• Migrations of data from SAN SVC to XIV LUNs.
• Experience with patch and package administration including building of packages and RPMs.
• Knowledge in VMware Infrastructure suite including ESXi, VCenter.
• Provided 24*7 Oncall production support based on Shift rotation.
• Building Micro partitions and configuring using HMC V6/V7.
• Knowledge in taking care of Emulex and qlogic HBA’s.
• Installation of packages using Tivoli provisioning manager (TPM).
• Good knowledge of project management and ITIL methodologies and ITSM tools.
• Experience with Data Migrations, Replications, Performance and capacity reporting.
• Strong ability to learn, absorb and use new technologies quickly and work under minimal supervision.
• Enjoy working in a group environment and equally effective working independently.

TECHNICAL SKILLS:

Virtualization Platforms: Unix Sun Solaris v 9, 10, HP - UX v 10.2, 11.31, 11i v3 CentOS 5,6, RHEL (5.x, 6.x, 7.x ). Linux Redhat EL v 4.x, 5.x, 6.x, 7, SUSE v9, 10.0, 11.x, Ubuntu 6.10, 9.10, OEL. Windows Win NT/98/XP/Vista/7/Server 2003/2008/2012. VMware ESX 3.x/4.x/5.x,VCenter, KVM Hypervisor, Virtual box, Zones/containers.Storage: SVM, ZFS, VxVM, LVM, DAS, NAS, SAN.

Networking: HTTP/HTTPS, FTP, NFS, SMB, SMTP, SSH, NTP, TCP/IP, NIS, DNS, DHCP, LDAP, LAN, WAN, Routers/Switches.

Scripting/Programming: Shell scripting (ksh, Bash), Python, Perl, Ruby.

Configuration Management: Puppet, Chef, Ansible, CFEngine.

Source Code Management: Git, SVN, CVS.

Continuous Integration: Jenkins.

DevOps/Build Tools: Ant, Maven, Chef, Puppet/Mcollective, GIT/GITHUB.

Web and Application Servers: Apache 2.x, Apache Tomcat 6.x, 7.x, Jboss 6.x, 7.x, WebLogic 8.1, 10.x, 11g.

Databases: Oracle 9i, 11g, MS SQL server 2008, DB2/UDB.

Monitoring tools: Nagios, CloudWatch, Splunk.

Backup Management: TSM,Acronis agent, VERITAS Netbackup 4.x/5.x, Ufsdump, ufsrestore, dump, restore, tar, dd, cpio, rsync.

Hardware: Sun Enterprise 250,450,3500,4500, 280R, V480, SunFire 4800, SunFire 6800, Sun Fire Starcat E15K Servers, M5000, T2000, T5240, x4100, x4250, x4440, Acer Intel Servers, DLT, AIT, DAT & CTD Backup Devices, Jukebox, Ethernet Hubs, Repeaters, Routers, LAN Testers, Cable Modems, Terminal Servers & Print Servers, DLT/DDS drives, Sun A5000, 5200, D1000, 3510.

PROFESSIONAL EXPERIENCE:

Sr. Unix/Linux Administrator/ DevOps Engineer

Confidential, Dallas, TX

Responsibilities:

• Worked on Red hat Linux 3, 4, 5 & 6 / Scientific Linux 5 & 6 and Centos 5, 6.
• Systems monitoring and administration of Servers for day-to-day problems, patches, user administration, hardware failure, monitoring log files, backup, software up gradation, configuration changes and documentation.
• Centrally managed an automated research oriented Linux environment through automation/configuration tools like Chef / Puppet and Cobbler.
• Worked on installing, configuring and deploying Openstack solutions.
• Setup and configuration of IDRAC on Dell PowerEdge series servers.
• Managing Linux infrastructure using single, integrated tools for efficiency, speed such as Puppet/CFengine.
• Worked on openstack deployement.
• Worked on keystone, neutron on openstack, nova.
• Worked on troubleshooting issues with openstack.
• Maintained version control setup of configuration files, automount maps, software repos etc. using subversion (SVN)/Git repositories.
• Extensively worked on automated installations of SLE/RHEL 5/6 through PXE boot using provisioning tools like Cobbler.
• Experience with splunk, snmp and nagios monitoring.
• Initializing and rebuilding a server with different RAID setups (RAID 0, 5 and 10).
• Installed and administered Jenkins CI server for continuous build of java projects.
• Worked with splunk dashboard.
• Migrating applications from Web Sphere to JBoss.
• Worked on Amazon Web Services - AWS (Cloud Computing), EC2, VPC.
• Worked on creating plugins to monitor application filesystems.
• Worked on puppet to create manifests and Modules to automate deployments and install rpm’s.
• Worked on several configurations such as rsyslog client/server setup for multiple servers. Used RELP protocol also.
• Worked on AWS Code deploy, AWS lambda, AWS RDS.
• Viewing and controlling the Processes running on the system and automating repetitive tasks.
• My system administration and engineering responsibilities also include creating shell and batch scripts.
• Deployment of syslog server and client configurations through version control (subversion) managing through Puppet.
• Worked on migrating Vmware to EC2 instances.
• Worked on AWS VPC, AMI and IAM roles.
• Hands on experience in Installation/Administration of TCP/IP, NIS/NIS+, NFS, DNS, NTP, Auto mounts, Send mail and Print servers as per the client’s requirement.
• Knowledge on SaaS, PaaS and IaaS concepts of cloud computing architecture. Implementation of AWS (IaaS) and Openstack.
• Monitored package versions, temp and var directory sizes, bash versions, processors using monitoring and reporting IBM Bigfix tool across several Linux and windows systems in the organization.
• Built many custom reports to generate reports and monitor the status of several machines using Nagios and IBM Endpoint Management tools.
• Configuring and Administrating NFS client/server, SAMBA shares.
• Installation and Configuration of SAMBA Server and APACHE Server.
• Implementation of log management tool logstash for sorting, processing and managing all kinds of logs from several hundreds of servers.
• Extensively worked with automount, NFS mounts. Mounted home directories through automount.
• Worked on automount failures, user login failures related production issues.
• Managed several Linux computing cluster nodes using cluster management tools like torque and condor.
• Maintaining DNS and DHCP records and virtual networks in the organization using IPAM services.
• Setup chef-client on several nodes, configured workstations to allow users to author, test, and maintain cookbooks.
• Administering LAMP. Installing and running MySQL services, making dumps of live databases for backup are some of the regular day to day activities.
• Installing TSM backup agent on clients and configuring TSM client for daily/weekly backups and Scheduling daily incremental backups using Tivoli Storage Management (TSM).

ENVIRONMENT: Microsoft Active Directory, Scientific Linux 5/6, RHEL 3/4/5/6,Chef/Puppet/CFengine, IPAM, Jenkins, Cobbler, AWS, JBOSS Application server, Subversion and Git repositories, Microsoft Outlook, Environment Modules, HP/DELL/SUN/SuperMicro Servers, HP PROLIANT DL servers, DELL PowerEdge servers, Shell/Perl Scripting, Python 2.7.8/3/3.4, Apache, Web Logic, VMware/Vsphere.

Sr.Linux Administrator/ DevOps Engineer

Confidential, San Francisco, CA

Responsibilities:

• Worked closely with the development and operations organizations to implement the necessary tools and process to support the automation of builds, deployments, testing and infrastructure (infrastructure as code) using Chef.
• Developed Chef recipes to configure, deploy and maintain software components of the existing infrastructure.
• Collaborated with development team to troubleshoot and resolve issues. Setting up & trouble shooting the nightly/on-demand builds for all Patches/Hot-fixes and for all releases.
• Setting up Jenkins Continuous Integration builds for all releases on windows and Linux.
• Integrated Maven with Subversion to manage and deploy project related tags.
• Installed and administered Nexus repository to deploy the artifacts generated by Maven and to store the dependent jars which are used during the build.
• Setup Maven Remote Internal Secure Repository with access restricted to team members.
• Installed and configured Jenkins tools on Linux and windows platforms, Manage slaves and installing Jenkins plugins.
• Installed and configured Sonar server and client configured Jenkins jobs to run Sonar Analysis jobs.
• Automation of daily tasks using Shell and Perl scripts.
• Following agile methodology using RTC as a supporting Tool.
• Configured Bamboo Build jobs for pre deployment process (DB execution, Environment configuration changes etc.) on both QA and preproduction Environments.
• Involved in meetings with Dev managers to Create, manage and maintain the SCM Plan, standards, and procedures.
• Administering Hudson/Jenkins CI servers, HP Quality Centre, HP Fortify, Build servers, Code collaborator.
• Developed Shell script to list recent ‘n’ number of builds for all the components.
• Worked on Red hat Linux 3, 4, 5 and 6 / Scientific Linux 5 and 6 and Centos 5, 6, Sun Solaris 8, 9, 10.
• Involved in the development environment includes Windows Server 2012 R2, Power Shell 4.0, as well as web interfaces for Atlassian Stash, Crowd and Confluence. Public services included GitHub, CentOS, Ubuntu, and Chef.
• Worked with GIT and Subversion to manage source code.
• Installed and configuration of VxVM, VxFS and VCS on various Servers.
• Focused on automation and continuous integration. Automated local development environment using chef.
• Developed server-side and client-side hooks/scripts as well as other glue software to customize Git and tie in with other tools such as code review tools(gerrit), defect tracking(JIRA), build management(Continuous integration server-Hudson), etc.
• Automated the provisioning of Tomcat app instances, Apache web instances through puppet
• Experienced in troubleshooting various log issues on TOMCAT, JBOSS and ZENDservers through log rotation and secure removal of older logs.
• Used Splunk and Sitescope monitoring tools for the automation process.
• Documented project's software release management procedures with input decisions.
• Used JIRA as a Change Management/ Work Management/ SCRUM Agile Tool.
• Established processes and tools to maintain code base integrity, including check-in validation rules and branch/merge processes.
• Streamlined Build process for Fortify scan of code from Manual to Automated mode by setting up Jenkins Automation environment, thus reducing manual error prone, Build time, No logging to machine is required.
• Experience with the YUM for RHEL and YAST for SUSE for upgrading the Linux.
• Resolved many Application Startup problems, PATH problems, and Name conflicts, TCP/IP, LAN /WAN, Sys logging and Networking Problems.
• Installed Patches/Packages on and Solaris Servers and RPM packages on Linux Servers.
• Supported Fortify scan and Code coverage activities.
• Monitored and fine tuning system and network performance for server environments running Solaris, Redhat Linux.
• Created and managed filesystems, disk partitioning and disk space related issues on Windows and Linux servers.
• Spearheaded unit testing of developer code; collaborated effectively with local / offshore teams and users to ensure code met client requirements and achieved targets for application functionality, stability, and availability.
• Identified and worked with troubleshooting issues related to CPUs usage, bumping cores as well as decommissioning old servers.
• Ensured compliance to established procedures with regards to operational and application documentation.
• Generate Crystal reports from the Build Database.
• Installed and configured Websphere application servers. Deployed Java based application in Websphere application servers.

ENVIRONMENT: AIX 5x, 6x, 7x, IBM Power7, Power6 and Power5, VIOs, NPIV, RedHat LINUX 5.5/6.3, Ubuntu, Windows, Oracle, DB2, Sun Solaris 9/10,SQLserver, Korn, Oracle RAC, C Shell, Yield Book, Razor, Vsphere, HMC, Tibco, HACMP, GPFS, VMware, CA Spectrum, CA EHealth, Netapp, TSM, Symantec Netbackup, Hitachi VSP, Hitachi Command Suite, Hitachi storage navigator, HUR, SI, TC, TSM, CSM, IBM XIV, SAN SVC, NAS, Autosys, TPM V7.1,CA Service Desk, Apache Webserver, MQ, Websphere Application Server & UNIX shell scripting.

Linux System Administrator

Confidential, Marshalltown, IA

Responsibilities:

• Extensive experience in installation, configuration, maintenance, design, development, implementation, and support on Suse Linux and Linux RHEL 5/6/7 Environments.
• Worked on configurations and installations Solaris and Linux servers using Custom Jumpstart and Kick start.
• Develop, host, troubleshoot and maintain client web sites using SuSE Linux.
• Regularly manage backup process for Server and Client data.
• Maintaining and Troubleshooting of FTP Server, Samba Server of the client.
• Monitoring system performance, Server load and bandwidth issues.
• 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.
• Maintain 99.98% uptime of LINUX production servers and follow proper escalation.
• Automate repetitive tasks, deploy critical applications and manage change on several servers using Puppet.
• Building & configuring Redhat Linux systems over the network, implementing automated tasks through crontab, resolving tickets according to the priority basis.
• Build Yum and RPM repository Server for Development team to upload packages, Written UNIX Shell scripts for monitoring & clean up old files.
• Responsible to solve technical Problems related System administration (Linux of Our Clients).
• Handling LVM related tasks, Creating, resizing LVM, Veritas Volume manager and also managing Cluster environment using Veritas Cluster suite.
• Installing and configuring Redhat Linux locally or over the network-kick start- (nfs, ftp, http).
• Work with DBAs on installation of DB, restoration and performance tuning.
• Handling the day-to-day Operations, Troubleshooting& Solve Server Problems in LINUX.
• Handling the day-to-day Operations, Install software, apply patches, manage file systems, monitoring performance and troubleshoot alerts.
• Maintained virtual environments using VMware ESX 4.x Server and built various Linux servers on VMware servers.
• Managing Redhat Cluster, HPC environment etc.
• Managed patches configuration, version control, service pack and reviews connectivity issues regarding security problems.
• Experience in building binaries using Maven & Xcode.
• Maintaining Server and Systems, provide IT support to User.
• Installing open source application, search, analyze and develop new application for users.
• Implement the policies for the users of the computer system and network.
• Provided production support in an on-call rotation in a 24*7 environment.

ENVIRONMENT: Centos 5.7/6, RedhatLinux5.7/6, Ubuntu 10.04/10.10/11.10 , Fedora 17, VMWare, SAN(EMC, Hitachi), NAS (Netapp), BladeLogic, Veritas Volume Manager 4.1, Sun Enterprise Server(E2900, E4500, E6900), Bash, Nagios.

Linux/ Unix Admin

Confidential

Responsibilities:

• Designed, planned and carried on installation, upgrade, configuration and maintenance of Veritas NetBackup 5.1 and 4.5 for Solaris and Linux.
• Maintained and administered around 90 Solaris, Linux and AIX Servers.
• Setup and implemented system installation and configuration using Jumpstart for Solaris 8 and Kickstart for Red Hat.
• Carried out administration of hardware clusters and application clusters.
• Hands on experience over managing clusters and fail over technologies.
• Installed and configured of RAID (0, 1, 0+1, 5) File Systems using Solstice Disk Suite.
• Created and edited Users, Groups and file permissions as per requirements.
• Performed packages and patches management and debugging as needed.
• Installed HBA cards and worked with storage team for backup and recovery.
• Resolved problem tickets generated via Remedy ticket tool.
• Worked on Disk / Volume management with Solstice Online Disk Suite and Veritas Volume Manager on Sun Sparc Storage Arrays and Multi-Packs.
• Worked on migrating Solaris 8 to Solaris 10 using Jumpstart.
• Implemented NAS for attaching end users home directories over the network.
• Opened cases with Vendors for analyzing of crash data and to make arrangements for Hardware replacements.
• Used vmstat and iostat to monitor system and performance.
• Implemented service requests as generated via Remedy ticket tool or GRS tool, e.g. O/S upgrade, IP changes, Printer configuration, group and net-group access, etc.
• Provided expert technical directions to the Application team and external vendors on integration requirements and technical issues related to system rollouts.

ENVIRONMENT: Solaris 8,9,10, Red Hat Linux 5.x, AIX 6.1, SUN ENTERPRISE V880, 4500, V240, V480, IBM RS/6000,B150, B450,P550,Blades, SP nodes, HP ProLiant & Blade servers. Veritas Volume Manager and Veritas Cluster Services.

Linux Administrator

Confidential

Responsibilities:

• Worked on Installing, tuning, troubleshooting and patching of Red Hat Enterprise Linux servers.
• Transferred files from one system to other using FTP and SFTP.
• Carried on installation and configuration of WebLogic and WebSphere application server.
• Monitored server performance and troubleshooting server related problems to SNMP.
• Monitored system performance parameters using iostat, vmstat, and fine-tuning.
• Performed installation, configuration, and maintenance of web servers, application servers, and database servers on Linux server.
• Wrote simple bash scripts to ping the servers and add users to the boxes.
• Carried on installation/upgrade, system startup, and system shutdown as needed.
• Scheduled various regular, periodic, future and queue tasks by using crontab.
• Utilized NFS management - taking care of user accounts/groups, setting up of NFS environment.
• Performed processes administration and management like monitoring, start/stop/kill various processes/sub processes.
• Resolved system errors and crashes, disk space problems, huge file sizes, and file system full errors.
• Created and maintained user accounts, profiles, and security rights.

ENVIRONMENT: Red Hat Enterprise Linux, Shell Scripting, Apache, WebLogic, WebSphere, Bash, NFS, iostat, vmstat.