SUMMARY

• Over 7+ years of experience as a Unix/Linux Professional. Worked extensively on different versions of UNIX including Sun Solaris 8/9/10, Red Hat Linux, CentOS, Debian and Ubuntu.
• Experience in enterprise - level systems and network design, implementation, integration and support.
• Experience in Installing, upgrading and configuring RedHat Linux 3.x, 4.x, 5.x using Kickstart Servers and Interactive Installation.
• Experience in using various network protocols like HTTP, UDP, POP, FTP, TCP/IP, and SMTP.
• Well versed in configuring Volume Groups and Logical Volumes, extended logical volumes for teh system growth needs using Logical Volume Manager (LVM).
• Adding new users / removing users / resetting user accounts. Adding new computers to teh Domain. Analyzing, troubleshooting and resolving problems involving operating system issues.
• Proficient in Perl, Shell and Python scripting.
• Experience in RPM and YUM package management.
• Experience in creation and managing user accounts, security, rights, disk space and process monitoring in Redhat Linux.
• Experience in working on change management process.
• Deployed Puppet, Puppet Dashboard, and PuppetDB for configuration management to existing infrastructure
• Proficient DB administration (Oracle and MSSQL) knowledge for maintaining, pruning, and performing required DB tasks.
• Experience in configuring and maintaining F5 load balancer.
• Experience wif high-end enterprise servers Sun T2000, 5240, M5000, 6800, 4800, HP ProLiant DL 380, 385, 580, IBM HS22, HS12, LS22 Blade center Servers.
• Implementation of backup solutions using Veritas Net backup 4.5, 6.5.
• Experience in Shell scripting using sh, ksh, bash and PERL
• Experience in Performance Monitoring of CPU, Memory, Disks, Network using various monitoring tools like Nagios, BMC for UNIX.
• A good team player wif strong communication skills and an inquisitive mind to learn more.

TECHNICAL SKILLS

Operating System: Solaris 7, 8, 9, 10 &11, Redhat Linux 2.1, 3, 4.x5.x,6.x, Suse 9,10&11, CentOS, Windows2000/03/08

Hardware: Cisco UCS C200, C250, Sun Fire 6800/4810/4800 , Sun Enterprise 10000, Sun Fire F15K, Sun Fire 25K, T2000,M5000, Ultra Enterprise 6000/5000, SPARC sun4c/sun4u, HP ProLiant servers

Web Servers: Apache HTTP Server 1.3.x, 2.2.x, iPlanet 6.x

Application Servers: WebLogic 8.x, 9

Disk Management: LVM, SVM, VCS 3.x/4.5Databases: MySQL, Oracle 9i

Designing tools: Microsoft PowerPoint

File Systems: UFS, VxFS, ZFS, ext, ext2, ext 3,ReFS,Xen virtualisation

Networking: TCP/IP, NFS, DNS, NIS, Switches, Hubs, and Routers

Backup: TSM 6.x

PROFESSIONAL EXPERIENCE

Confidential, MA

Sr Linux administrator

Responsibilities:

• Worked as L2/L3 operations SA in an organization consisting of 20000 physical servers globally, running Redhat Linux operating System.
• Installation of RHEL Linux 5/6 operating systems on HP & Cisco UCS HW.
• Installation Redhat & SUSE Linux on Cisco and HP HW using Kickstart
• Architected and implemented automated cloud infrastructure using Chef
• Rebuild of teh both Linux (Redhat/SUSE/Ubuntu) OS when teh server is crashed, using teh established profile settings.
• Involved in Change Control Management and documentation of teh procedures.
• Annual Participation in Disaster Recovery (DR) and power down Activities.
• Performed disk administration using LVM, Linux Volume Manager (LVM), Solaris Volume Manager (SVM) and Veritas Volume Manager 4.x/5.x
• Implementing Chef for a start-up to facilitate simple instance management for event-driven load provisioning of instances based on averages of Nagios checks.
• Installed VMWare ESX4.1 to perform virtualization of RHEL/SUSE/OEL servers.
• Experience Working wif EMC storage arrays like Clariions and VMAX and setting up SRDF and for DR purpose on Production DB and Business Critical Applications.
• Performance monitoring on Linux servers using iostat, netstat, vmstat, sar, top & prstat.
• Has experience in troubleshooting TSM related backup issues.
• Configured Hitachi SAN Zoning and assigned LUNs to Sun servers.
• Migrated terabytes of data from Hitachi SAN storage to EMC Symmetric
• Installed and configured database like MySQL, Mongo server.
• Administered Netbackup 5.1 Performed backups on Tape library TL2000, TL400
• Configured a TCP/IP network on UNIX, IP Networking creating mount points for Server directories and mount these directories on UNIX servers.
• Updated firmware on HBA cards like qlogic and installed it on PE Dell R410,R610 servers
• Configuration management: extensive experience wif both Puppet and Chef.
• Installed NIC card and upgraded firmware on NETSCREEN Security appliances
• Installed and configured DHCP, DNS, NFS
• Tied together disparate pieces to build a fully automated bare-metal to production server build system using RequestTracker(RT) wif teh AssetTracker plugin as teh system of record. DNS, DHCP, kickstart, and puppet tied into teh system.
• Configured iptables on Linux servers.
• Worked on monitoring tools like MRTG graphs, BB big brother
• Worked on volume management using Veritas Volume Manager 4.0
• Troubleshooting on Sun Java System Web Server 6.0 and Apache 1.3.x web server on Solaris wif experience in installing SSL certificates.
• Performed Package administration on Linux using rpm, yum and Satellite server.
• Patch and package administration for installation of patches as per teh company policy and installation of packaged application.
• User, Group management for all teh UNIX servers.

Environment: Redhat EL 3.x, 4.x, Centos 5, Apache, PHP, Veritas Volume Manager 4.1, 5,DNS, TCP/IP, NFS, PE DELL R410,R610,R910,1650,1950,860, Sun T2000, SunFire v890,E2900, Disk Arrays MD3000, TL2000,TL4000.EMC Ax-4,Clarion,VNX

Confidential, IA

Sr Linux Administrator

Responsibilities:

• Installation of Redhat/SUSE/Ubuntu Linux on x86 HW like HP and Dell.
• Performed volume management tasks like mirroring using SVM, Veritas Volume Manager 4.x/5.x and HPUX LVM.
• Supported Orcale DB and Oracle RAC on Redhat environments.
• Experience setting Linux to support RAC, Oracle and Weblogic installations and performed trouble shooting on performance issues.
• Administered WebLogic 9 application servers which included installing SSL certificates.
• Experience working wif SAN environments majorly servers connected to EMC Clariions, DMX and Celerra’s.
• Experience working wif servers connected to on SAN and NAS environments like EMC and NetApp.
• Experience installing Puppet agents and pushing Manifests/Modules to 500+ Puppet clients
• Experience setting up cluster environments like Veritas Clustering for high availability of Business Critical Applications.
• Installation of Oracle 9i, 10g on teh Sun servers running SUSE & Redhat Linux.
• Experience working wif EMC Powerpath and Redhat Native multipathing.
• Patch and package administration for installation of patches as per teh company policy and installation of packaged application
• User, Group management for all teh UNIX servers
• Modifying/ Writing scripts in Bash and Korn shell for optimizing day to day administration
• Editing crontab in post - installation of Unix servers

Environment: Redhat EL 3.x, 4.x 5.x, SLES 10,11,Sun Java System Web server 6.0, Verities Volume Manager 4.1 5, Oracle 9i, DNS, NFS, Sun T2000, M5000, v480, v880, Bash and Korn scripting.

Confidential, Milwaukee, WI

UNIX/Linux Administrator

Responsibilities:

• Installation of Redhat, Ubuntu and SUSE Linux on HP and Dell Rack and Blade servers.
• Created Linux VM’s and involved in tuning teh operating system for installation of applications
• Built and managed a large deployment of Ubuntu Linux instances systems wif Opscode Chef. Wrote tools, scripts, and monitoring checks.
• Installing, administration and troubleshooting of Apache 2.x web server, which included tasks like creating virtual hosts, installing SSL certificates etc.
• Redesigned and redeployed teh Nagios implementation. Nodes automatically added/removed themselves via Puppet.
• Installation of Linux servers and creation of VMS’s using teh web console vCenter on VMWare ESX.
• Worked on installation and administration of version control tools like RCS and CVS.
• Managing configuration files like Apache httpd.conf, crontab in teh revision control systems.
• Performance monitoring and tuning of teh applications and OS using iostat,sar, vmstat, prstat commands.
• Installation of patches on servers running Redhat & SUSE Linux servers.
• Worked on cronolog in Linux servers for managing teh logs of teh web servers.
• Was involved in Change Control Management and documentation of teh procedures.

Environment: Redhat EL 3.x, 4.x,5.x,6.x, Apache Web Server 1.3.x, 2.2.x, WebLogic 9.x, RCS 5.6, CVS 1.11.x, Sun T2000, v490, v890, 480R, Netra T12.

Confidential

UNIX/ Linux Administrator

Responsibilities:

• Installation of Solaris 9, 10, SUSE Linux and RHEL operating systems on SPARC platforms.
• Extensively used SMF for service management for managing services on Solaris10.
• Performed volume management using Veritas Volume Manager 4.0
• Administered WebLogic 9 application servers which included installing SSL certificates.
• Configured management tools like Ansible, cfengine, Chef, Puppet
• Remote system administration using tools like SSH, Telnet, and Rlogin.
• Extensively worked and involved in capacity planning discussions.
• Deployed Puppet, Puppet Dashboard, and PuppetDB for configuration management to existing infrastructure.
• Planning and implementing system upgrades including hardware, operating system and periodical patch upgrades.
• Installation, configuration and administration of VMware, Oracle Solaris Zones, Containers and Ldoms.
• Automation of jobs through crontab and autosys.
• Deployed Puppet for automated management of machine configurations.
• Installation of packages, patch management, volume management on SUSE servers using YaST.
• Performed capacity analysis, monitored and controlled disk space usage on systems.
• Experience wif Windows Firewall and Iptables, DNS, Linux LVM and Disk Partitions.
• Troubleshooting on Sun Java System Web Server 6.0 and Apache 1.3.x web server on Solaris wif experience in installing SSL certificates.
• Installation of Oracle 9i, 10g on teh Sun servers running Solaris 10
• Performed tuning of teh kernel parameters for teh better performance of teh operating system and tuning TCP parameters and analyzed performance of resources like CPU, Memory, Disk and swap using native commands like prstat, vmstat, sar, iostat, swap etc
• Patch and package administration for installation of patches as per teh company policy and installation of packaged application
• Performed tasks on F5 load balancer like installing and renewing SSL certificates and bouncing servers wif performance issues after taking them out of teh server pools.
• User, Group management for all teh UNIX servers
• Modifying/ Writing scripts in Bash and Korn shell for optimizing day to day administration
• Editing crontab in post - installation of Unix servers

Environment: Solaris 10, Redhat EL 3.x, 4.x,5.x and 6.x, NFS, GPFS, NIS, LVM, BSD Linux, Shell Programming, VLAN, FTP, Fortinet Firewall Apache Web Server 1.3.x, 2.2.x, Sun Java System Web server 6.0, Veritas Volume Manager 4.1, 5, BigIP F5, Oracle 9i, DNS, NFS, Sun T2000, M5000, v480, v880.