Summary:

• Around 7 years of experience in UNIX/ Linux, systems administration, systems maintenance, systems security, software upgrade and network administration.
• Experience in administration of Solaris 2.5, 2.6, 7, 8, 9, 10, Redhat Linux ES 4/5/6, SuSe EL 7, 8, 9, 10,11 12.
• Experience in installing Redhat Linux on HP Hardware.
• Worked on blade systems which include HP 7000c with BL460c and Dell M1000e with M600 servers for the installation of Redhat Linux EL 4.x, 5.x,6.x on VMware ESX 3.5 4.0.
• Disk space and File system management using Veritas Volume Manager 4.x, 5, Logical Volume Manager and Solaris Volume Manager.
• Experience with installation of support of applications which include Apache 2.2.x, WebLogic 9, 10, JBoss 4.2, TIBCO, Oracle, Informatica, CA eTrust etc.
• Experience with SAN solutions which included McData, Brocade FC switches and Hitachi, EMC arrays.
• Worked with F5load balancers that improve the overall performance of applications by decreasing the burden on servers associated with managing and maintaining application and network sessions.
• Experience with backup technologies like Tivoli Storage Manager 5.x and Veritas Netbackup 3.x, 4.x, 6.5.
• Proficient in configuring the Data Communication Devices such as Routers, Switches, Hubs, Terminal servers and Troubleshooting LAN and First Level WAN Related Problems.
• Experience with 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.
• Extensive experience with Troubleshooting of issues with applications, network, user hardware, naming services etc.
• Experience in Network Configuration, Performance Tuning, Security Hardening.
• Experience in configuration of naming services like NIS, DNS etc. on Linux and Solaris
• Experience in architecting, setting up data centers and migration of applications.
• Strong analytical, diagnostics, troubleshooting skills to consistently deliver productive technological solutions.
• Implement OpenSSH based security for the Redhat, HPUX and Solaris machine.
• Experience in System performance tuning Configuration.
• A good team player with 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/4.5,
• Databases: 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

Sr Linux administrator

Responsibilities:

• Troubleshooting on Sun Java System Web Server 6.0 and Apache 1.3.x web server on Solaris with experience in installing SSL certificates.
• Installed and configured PHP
• 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.
• Rebuild of the both Linux Redhat/SUSE/Ubuntu OS when the server is crashed, using the established profile settings.
• Involved in Change Control Management and documentation of the procedures.
• Annual Participation in Disaster Recovery DR and power down Activities.
• Experience in troubleshooting samba related issues.
• Performed disk administration using LVM, Linux Volume Manager LVM , Solaris Volume Manager SVM and Veritas Volume Manager 4.x/5.x.
• Installed VMWare ESX4.1 to perform virtualization of RHEL/SUSE/OEL servers.
• Experience Working with 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.
• Have experience in troubleshooting TSM related backup issues.
• Installed and configured database like MySQL, Mongo server.
• Administered Netbackup 5.1 Performed backups on Tape library TL2000, TL400
• Worked on application like Jenkins tool for testing builds.
• Configure RAID on MD3000 Disk Array. used mdadm commands
• Updated firmware on HBA cards like qlogic and installed it on PE Dell R410,R610 servers
• Installed NIC card and upgraded firmware on NETSCREEN Security appliances
• Worked on POSTFIX mail server.
• Installed and configured DHCP , DNS, NFS
• 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
• Performed Package administration on Linux using rpm, yum and Satellite server.
• Patch and package administration for installation of patches as per the company policy and installation of packaged application.
• User, Group management for all the UNIX servers.
• Modifying/ Writing scripts in Bash and Korn shell for optimizing day to day administration
• Editing crontab in post installation of Unix servers
• Did Inventory management , Server decommissioning , new server adding to list

Environment: Redhat EL 3.x, 4.x, Centos 5, Apache, PHP, Veritas Volume Manager 4.1, 5, DNS, 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

Sr Linux Administrator

Responsibilities:

• Experience working with EMC Powerpath and Redhat Native multipathing.
• Experience setting Linux to support RAC, Oracle and Weblogic installations and performed trouble shooting on performance issues.
• Supported Orcale DB and Oracle RAC on Redhat environments.
• Performed volume management tasks like mirroring using SVM, Veritas Volume Manager 4.x/5.x and HPUX LVM.
• Installation of Redhat/SUSE/Ubuntu Linux on x86 HW like HP and Dell.
• Administered WebLogic 9 application servers which included installing SSL certificates.
• Troubleshooting on Sun Java System Web Server 6.0 and Apache 1.3.x web server on Linux with experience in installing SSL certificates.
• Experience working with SAN environments majorly servers connected to EMC Clariions, DMX and Celerra's.
• Experience working with servers connected to on SAN and NAS environments like EMC and NetApp.
• Experience setting up cluster environments like Veritas Clustering for high availability of Business Critical Applications.
• Installation of Oracle 9i, 10g on the Sun servers running SUSE Redhat Linux.
• Patch and package administration for installation of patches as per the company policy and installation of packaged application
• User, Group management for all the 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.

Confidential

UNIX/Linux Administrator

Responsibilities:

• Installation of Linux servers and creation of VMS's using the web console vCenter on VMWare ESX.
• Installing, administration and troubleshooting of Apache 2.x web server, which included tasks like creating virtual hosts, installing SSL certificates etc.
• Created Linux VM's and involved in tuning the operating system for installation of applications
• Installation of Redhat, Ubuntu and SUSE Linux on HP and Dell Rack and Blade servers.
• Worked on installation and administration of version control tools like RCS and CVS.
• Managing configuration files like Apache httpd.conf, crontab in the revision control systems.
• Performance monitoring and tuning of the 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 the logs of the web servers.
• Was involved in Change Control Management and documentation of the procedures.

Environment: Redhat EL 3.x, 4.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:

• Performed volume management using Veritas Volume Manager 4.0
• Created Projects on Solaris 10 to tune the operating system for installation of applications.
• Extensively used SMF for service management for managing services on Solaris10.
• Installation of Solaris 9, 10 operating systems on SPARC platforms.
• Administered WebLogic 9 application servers which included installing SSL certificates.
• Troubleshooting on Sun Java System Web Server 6.0 and Apache 1.3.x web server on Solaris with experience in installing SSL certificates.
• Installation of Oracle 9i, 10g on the Sun servers running Solaris 10
• Performed tuning of the kernel parameters for the better performance of the 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 the company policy and installation of packaged application
• Performed tasks on F5 load balancer like installing and renewing SSL certificates and bouncing servers with performance issues after taking them out of the server pools.
• User, Group management for all the 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, 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.

Confidential

UNIX / Linux Administrator

Responsibilities:

• Performed Jumpstart and Post Jumpstart Installation with Solaris 9, 10 on E25k and T2000, v890, v480, 280R, E480 and Kickstart installation using Redhat AS 3, 4.x on Dell 6800, 2950, 1850, 1250, HP DL 380, DL 500 Servers.
• Performed disk administration using Linux Volume Manager LVM , Solaris Volume Manager SVM and Veritas Volume Manager 4.0.
• Configured and administered Web Servers like Apache 1.3.4 and IIS 6, this included the creation of Name Based Virtual Hosting and IP Based Virtual Hosting, installing SSL certificates and troubleshooting.
• Modification of OBP and nvram settings for E25k and T2000 servers for the configuration of the alternative boot disks after mirroring the root disk.
• Configuration of NFS servers and Samba Servers to share the resources across multiple environments.
• Configured NIS infrastructure in the Solaris and Linux environment.
• Performed kernel upgrades in the Linux Servers to stable releases.
• Installation of application servers like Oracle 10g, WebLogic 8.x, and performance tuning of the same.
• Performed Package administration on Linux using rpm and on Solaris using pkgadd.
• Configured tools like Big Brother for system monitoring and status reporting of the various parameters like system resources and services.

Environment: Solaris 8, 9, 10, Redhat 8, 9, AS 3.0, 4.x, LVM, SVM, VxVM 4.0, VCS, Apache 1.3.4, IIS 6, Postfix 2.2, Sendmail 8.12, Oracle 10g, WebLogic 8.x, Big Brother Sun E25K, T2000, v890, v480, 280R, E480, Dell 6800, 2950, 1850, HP DL 380, DL 500