SUMMARY

• Over 7 years of experience in Unix System Administration and Support of various applications on Sun Solaris 8, 9,10, RHEL 5.x, 6.x, SuSE EL 9, 10, vSphere 4.0, 5.0, Cent OS and Windows 2000/2003/2008.
• Experience on Web servers such as IBM Websphere 6.0, Tomcat 5.x/4.x/3.x Apache Http Server 1.x/2.x, Oracle Weblogic V7/8/9.
• Experienced in installing, upgrading, patching, configuring and administrating Solaris OS SPARC/x86 with proper release management.
• Experienced in Performance Monitoring, Security, Trouble shooting, Disaster recovery, Maintenance and Support of UNIX systems.
• Created and maintained user accounts, profiles, rights, disk space and process monitoring.
• Worked on shell scripts for CPU usage, Memory consumption and number of I/O to collect performance stats and troubleshoot issues if needed on Sun Solaris, Red Hat Linux.
• Expertise in file system concepts like LVM, SVM, VxVM. Creating new file systems, increasing and decreasing file systems, mounting file systems, un-mounting file systems and troubleshooting disk space issues.
• Deployed and configured Veritas Volume manager VxVM and SVM for creating mirroring, striping, parity, new file systems, mounting and un-mounting and data replication of File Systems on Sun Solaris, Redhat Linux.
• Performance Sun Solaris , RedHat Linux servers using tools like vmstat, iostat, sar, top, pmstat, free, prtconf, syststat, iostat, netstat etc.
• Experience using remote system administration tools like ssh, http, rsh, telnet, scp, ftp, sftp, ssl, RSA secure connection and Rlogins.
• Experienced in planning, documenting and supporting high availability, business persistence, fail-over, fail-back using Veritas Cluster Server 4.0, 5.x, Veritas cluster file systems in SAN environment.
• Expertise on DNS, NIS, NFS, FTP and DHCP, troubleshooting network problems such as subnetting, Routing, Firewall related on TCP/IP protocol issues.
• Installed and configured SUN Solaris 9, 10 on sun servers using Jumpstart installation and also manually.
• Experience in installing and configuring kick start in Linux.
• Resolving system errors and crashes, huge file sizes, file system errors.
• Troubleshooting of NFS servers and NFS clients in auto mount Environment.
• Installed and configured recommended kernel setting for various applications such as Oracle 10i, 11g , MySQL.
• Implemented different for RAID levels using for linux and solaris servers.
• Exposure to couple of ticketing systems like Remedy and jira.
• Experience with Scripting, to reduce daily routine work and automation with simple way and reduce human intervention.
• Worked on Group and User administration, startup shutdown scripts, Crontab, File system maintenance, Backup scripts and Automation.
• Working closely with other business units like deployment, DBA, SAN Admin and Backup Admin etc and other product vendors like EMC, Dell, Oracle.
• Performed all configuration changes to software and Patching, firmware upgrades to hardware with in the maintenance window with proper change management approvals.
• Extensive experience in setup, configuration, upgrade, maintenance, performance monitoring and troubleshooting on different UNIX platforms like Linux, VMWARE and system software and hardware
• Designed and implemented the Application based Load Balancing, Clustering and Mirroring.
• Experienced working in fast-paced, deadline-oriented environments. Proficient in Capacity Planning, and Security setups.
• Excellent written and verbal communication skills, inter-personal skills and self-learning attitude.

Technical Skills:

PROFESSIONAL EXPERIENCE

Confidential

Role: Unix/Linux Administrator

Confidential and its alliances serve more than 1 million households and businesses and insure more than 1 million vehicles and a half a million homes throughout the United States.Provides fire and lightning insurance for farmers across the nation.

Roles and Responsibilities:

• Monitored and administered Servers for day-to-day problems, patches, user administration, hardware failure, monitoring log files, backup, software patching, configuration changes and documentation.
• Installed, upgraded and configured SUN Solaris 9/10/11 on Sun Servers using Jumpstart and Red hat Enterprise Linux 5/6 using Kickstart.
• Installed configured Guest operating system like Redhat 5.x,6.x and SuSE 9, 10 on VMware ESX 5.x.
• Configured, maintained, applied changes and fail-over schedules of HA servers running Veritas Cluster Server and Redhat Cluster Server.
• Fine tuning of Operating System and performance analysis, uptime and response time and SLA.
• Managed user accounts and groups on a large scale in LDAP and NIS environments.
• Performed UNIX System Administration. Fine tuning, Kernel debugging, process scheduling, disk and file system I/O, kernel internals, TCP/IP communications.
• Performed installation, configuration and maintenance of Solaris 10 with Veritas Volume Manager 5.0 and Veritas Cluster Server 5.1.
• Configured the LUNs assigned by the storage administrators, and managed Volumes using Logical Volume Manager LVM on Linux. Created ZFS file system in Solaris 10 using Zpool and ZFS and created Veritas file systems 5.0.
• Implemented RAID techniques and the creation of Disk groups and volumes, plexes using Veritas Volume Manager 5.0.
• Installed and configured LDOMs on Solaris 10 on T series Servers.
• Setup and configured KVM on Red hat and Xen on SuSE and installed guest OS on KVM and Xen.
• Created sudo access to users on Linux and Solaris servers.
• Configured Nagios to monitor the resources on the server farm and support them on a 24x7 basis.
• Configured multi-pathing using multipathd.conf, EMC Powerpath.
• Creating account for new users and deleting accounts for the expired users.
• Troubleshooting and analysis of hardware and software failures for various Solaris servers core dump and log file analysis .
• Involved with the deployment teams in trouble shooting and fixing day-to-day problems of the applications in production on 24/7 schedule.

Environment: SUN Solaris 8/9/10, RHEL 5.x/6.x, VMware ESX5.x, Apache 2.2.x, SuSE EL 9/10, WebLogic 10/11g, WebLogic 8.x/9.x, SunFire T1000, T2000, Sun M9000, M5000, M3000, Sun X3-2, X3-4, HP C Blade System,BL460c, BL420c EMC, Veritas Storage Foundation 5, Veritas Cluster Server 5.1, VMware.

Confidential

Role: Linux/Solaris System Administrator

Confidential is a workers' compensation insurer that was created as a public enterprise fund by the U.S. state of California, and today has partial autonomy from the rest of the state government. It is required by state law to maintain its headquarters in San Francisco, but has regional offices all over the state.

Roles and Responsibilities:

• Installed, maintained and upgraded Redhat Linux and Solaris Servers using kickstart based network installation.
• Configured and administered multiple production Redhat 5.0, 6.0 servers across multiple platforms.
• Configured and maintained the volume groups, logical volumes using LVM, VERITAS Volume Manager and Solaris Volume Manager.
• Performed High availability designing using VERITAS Cluster Server 5.0 on Redhat Linux and Solaris Servers.
• Installed the Redhat 5.x,6.x operating system and set up the Oracle RAC environment.
• Installed, configured and administered Solaris 9/10/11 using Jumpstart.
• Managed File system using VERITAS volume manager 5.0.
• Added virtual hard drives, NIC cards and memory on Guest OS.
• Performed centralized management of Linux boxes using Puppet.
• Performed Troubleshooting NFS, NIS, Samba, DNS, DHCP, LDAP, Mysql and network problems.
• Maintained the user accounts in NIS environment.
• Setup and configured KVM on Redhat and Xen on Suse.
• Resolved system errors and crashes, disk space problems, huge file sizes, file system full errors.
• Experience in Kernel fine tuning for maximum files, oracle database installation, ip forwarding, and network issues.
• Performed RAID mirroring of Root disk on Solaris boxes.
• Configured PXE environment for Kick Start installation for Red Hat Linux. Writing shell scripts for the routine tasks.
• Configured password less login between system using SSH protocol on Solaris and Linux boxes.
• Involvement with the Deployment teams in trouble shooting and fixing day-to-day problems of the applications in production on 24/7 schedule.

Environment: RHEL 4.x/5.x/6.x, Solaris 8/9/10, VERITAS cluster server 5.0, VERITAS foundation suite 5.0, Apache 2.2.x, Oracle 9i,10g, JBoss 4.2, VMware, Sun Fire x4100, x4200, x4250, T2000, T5440, M3000, Dell R805, EMC Symmetric 8830, 8840,DMX -3 NFS, and DNS, EMC, Shell, bash scripting.

Confidential

Role: Unix System Administrator

Confidential is an online marketplace owned by eBay, which provides services for buyers and sellers of tickets for sports, concerts, theater and other live entertainment events. It has grown from the largest secondary-market ticket marketplace in the United States into the world's largest ticket marketplace.

Roles and Responsibilities

• Build and support cluster infrastructure Sun Cluster 3.x, Veritas cluster, Linux RAC cluster .
• Configured Jumpstart server for Solaris 9/10 and Kickstart Server for Redhat Linux 4.0,5.0.
• Provided Administrative support for about 225 Solaris/Linux servers running Web logic, Web sphere Suites, Apache Web Server and Multimedia Messaging applications.
• Installation, Configuration and Maintenance of Solaris Operating System with Veritas Volume Manager and Veritas Cluster Server.
• Trouble shooting the OS related Issues.
• Created new file systems whenever required.
• Knowledge on Packages and patches in Solaris and Redhat.
• Performed tasks such as User, group management, adding, removing disks and creating file systems as requested on UNIX/WINDOWS Servers.
• Installing Veritas Volume Manager and configuring Disk Groups, Volume Groups and Logical volumes to manage the storage resources.
• Day to Day activities included handling security issues like stale UNIX account cleanups, 90 day password changes, setting max age and min age, creating a list of umask permission for various users.
• Involvement with the Deployment teams in trouble shooting and fixing day-to-day problems of the applications in production on 24/7 schedule.
• Ensured the data redundancy with RAID implementation.
• Configured different Network related services such as NFS and NIS.
• Configured send mail server in the local mail server.
• Responsible for the configuration of DHCP server and Samba server.
• Responsible for DNS server management, User disk quota management, Projects, Quotas management. Troubleshooting the problems regarding NIS and DNS.

Environment:- Sun Solaris 8/9/10, RHEL 4.x/5.x/6.x, SuSe Linux 9,10 , Apache, Tomcat, Samba, NFS, SSH, Production hosting and software development support, Secure FTP Server, Veritas Volume Manager 4.0, Oracle 10g, Sun Fire X4100, X4200, X4250.

Confidential

Role: Unix/Linux Administrator

Roles and Responsibilities:

• Performed 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.
• Installed configured Solaris Jumpstart server and Linux Kick Start Server.
• Performed troubleshooting for various problems, logging call with vendors.
• Knowledge on Packages and Patches on Solaris and Red hat 4.0.
• Performed installation and configuration of Veritas Volume Manager, LVM, VERITAS File System and Veritas Cluster Server.
• Created UNIX Shell scripts for job automation.
• Installed, Configured and Administered the High Availability Veritas Cluster Servers for failover and redundancy purpose.
• Created User, Groups. File Systems per database requirement.
• Develop Linux shell scripts to accomplish redundant tasks to simplify in distributed administration.
• Performed installation, Configuration of Web Servers, Application Servers and Database Servers on Sun Solaris 8/9.
• Setup and configure NIS environment and troubleshoot NIS when needed.
• Provided sudo access to users if needed.
• Disk and File system management through Veritas Volume Manager.
• Involved in troubleshooting day to day system and user problems.
• Interacting with various teams such Oracle database team, and Net Backup team.
• Maintenance of Source code, Direct interacts with development, migration, testing Database- Oracle9i.
• Develop, Maintain, update various scripts for services start, stop, restart, recycle, cron jobs Unix based Korn shell, Bash.
• Problem determination, Security, automation and Shell Scripting.
• Performance management Capacity planning.

Environment: Apache, Solaris 8/9, Oracle 9i, Veritas Cluster Server, Veritas File System, Veritas Volume Manager, Sun Fire 4500,V880,V480 E420R,E450,E250, Web sphere, Web logic, LVM.

Confidential

Role: Linux/Solaris Administrator

Roles and Responsibilities:

• Monitored the usage of CPU, load on CPU, checking the load on memory and various security aspects of the systems configuring the network printers.
• Installed, configured and maintained Oracle 8i on Sun Solaris.
• Installation, Configuration and Administration of High Availability VERITAS Cluster Servers for failover and redundancy purpose.
• Using common scripting languages like Bash and shell to automate regular admin jobs.
• Performed problem determination and restored service using standard procedures.
• Maintained a secure Samba file server on a 3 Red Hat Enterprise Linux systems for integrated data communication between Windows and Linux Operating Systems.
• Security measures blocking unnecessary ports and restricting user remote logins.
• Managed data and disk drives, disk mirroring and RAID implementation using Solaris Disk Suite.
• Joined multiple disks to overcome disk size limitations, mirrored data for fault tolerance. Spread data over multiple disks for performance enhancement.
• Configured Jumpstart server for Solaris 8/9 and kickstart server for Red hat 4.0.
• Responsible for Day to Day Backup and Recovery using tar.
• Used commands for creating new users, groups, user passwords, changing passwords, managing user accounts and locking users.
• Monitored unauthorized access and unauthorized users.
• Performed Recovery Management on tapes using Ignite-U.

Environment: Linux, Sun Solaris 8/9, Oracle 8g, NIS, DNS.