Sr. Unix/Linux Administrator

Summary

• 7 years of IT industry experience in Unix system administration and production support of various applications on Sun Solaris 9,10, Red Hat Linux 4,5,6, SUSE Linux 10,11 on standalone, clustered, and VMWare.
• Worked extensively in planning, designing, installing and configuration and implementing on Sun Solaris 9, 10.
• Possess good experience using jumpstart servers for the purpose of installing, upgrade and configuring Sun Solaris 9, 10 on sun servers and Kick-start process for RHEL.
• Worked extensively in package management using YUM, Zypper and Red HAT RPM used in several Linux distributions such as Red Hat Enterprise Linux and SUSE Linux Enterprises.
• Experience working with Red Hat Satellite Server for upgrading and patching Linux Servers.
• Highly Experienced in creating, extending, removing file systems on LVM.
• Manage ticket queue by assigning and distributing among the team members and working with clients directly for resolving the issue.
• Experienced in implementing Raid's 0/1/5 using Veritas Volume Manager and Raid's 0/1/5/10 using mdadm in linux.
• Worked extensively in on different tools like Veritas Volume Manager, Veritas file system and Disk suite for disk Management.
• Experience in configuring, extending and tuning virtual memory and swap space on Sun solaris and Red Hat Linux Servers.
• Troubleshooting NFS servers, NFS clients in AutoMounts Environment
• Experience in installing, configuring, supporting and troubleshooting UNIX/Linux Networking services and protocols like NIS, NIS , LDAP, DNS, NFS, DHCP, NAS, FTP, SSH, and SAMBA
• Experienced with SAN, NAS and storage environment's.
• Provided support for multi-path Fiber Channel storage systems, as well as Solaris servers configured with multiple Fiber Channel FC , Host Bus Adapters HBA on a Storage Area Network SAN .
• Proficient in IBM-Tivoli Storage Manager for system Backup, recovery, restoring and troubleshooting.
• Participated in scheduled Disaster Recovery test and Power Down Test.
• Strong Communication and analytical skills. Able to handle multiple task, demonstrated ability as a team player as well as well suited independently.

Technical Skills

Experience

Responsibilities:

• Installation and configuration of Sun Solaris 10 and Suse Linux Enterprise server 11 on VMWare and stand-alone platforms.
• Installing and configuring Solaris Zones.
• Managing puppet configuration and build matured tools for handle server problems.
• Patching using local repository for Suse linux and Solaris 10.
• Managing disk storage using Veritas Volume Manager 4.1/5.0, ZFS, LVM and SVM.
• Installing HBA drivers, firmware and Powerpath software in Production, Development and QA servers.
• Administering of High Availability VERITAS Cluster Servers for redundancy purpose.
• Configured volume groups and logical volumes, extended logical volumes for file system growth using Logical Volume Manager LVM commands.
• Coordinating with Tivoli team for setting automated alerts which include OS related alerts and Application alerts.
• Management of user accounts and groups according to the security needs.
• Upgrading Linux kernel and applying necessary patches.
• Performing online addition of LUNS to the servers for provisioning disk space, and resizing file systems
• Installing oracle client, Tivoli package for monitoring, ESM package for monitoring configuration files and troubleshooting.
• Investigating and restoring missing backups through IBM- Tivoli Storage manager
• Performed root cause analysis of technical issues.
• Participated in scheduled DR test and power down tests.
• Configuring and troubleshooting NFS, FTP and SSH for users.
• Provided production support in an on-call rotation in a 24x7 environment.

Environment:

Sun Enterprise T2000, T5220, T5420, Sun Fire V440, V880, Sun Fire 6800, 6900, Sun Sparc M3000, M4000, M8000 HP DL360, HP DL585, IBM p Series servers p570, p670, Veritas Volume Manager, Veritas Clusters, Veritas Netbackup, NetApp Filers and Symmetrix DMX3/DMX4/VMAX

Confidential

Responsibilities:

• Installation, Upgrading and deployment of Red Hat Linux Operating system on X-86 based HP BL460, BL685 Hardware and on VMware ESX servers
• Providing 24/7 support for on-call on Solaris, RHEL and AIX environments.
• Jumpstart and kickstart server builds, assisting in PCI security analysis, SAS70 audit compliance
• Installed and configured VERITAS Storage Foundation Suite, VxVM, VxCS and Vxfs for Linux RHEL 5.X 64-bit Operating systems.
• Configuration of Kernel parameters as per application requirement.
• Associated with DBA's for installation of Oracle database and Sybase on Linux servers.
• Managing disk storage using Veritas Volume Manager 4.1/5.0 and Solaris Volume Manager.
• Installing HBA drivers, firmware and Powerpath software in Production, Development and QA servers.
• Working server configured tools for puppet tools.
• OS upgrades using Live Upgrade for Solaris, and yum update for RHEL
• Patching of RHEL and Solaris servers.
• Upgrade component firmware on various components of HP Blade Chassis and servers
• Network redundancy using IPMP and NIC Bonding
• Administering of High Availability Veritas Cluster Servers for redundancy purpose.
• Managing data backup and recovery operations using Veritas Netbackup.
• Configured volume groups and logical volumes, extended logical volumes for file system growth using Logical Volume Manager LVM commands.
• Configuring, Installing zones on Solaris 10.
• Coordinating with Tivoli team for setting automated alerts which include OS related alerts and Application alerts.
• Administration and Troubleshooting Solaris servers running business critical application Websphere 5.1/6.1 applications.
• Management of user accounts and groups according to the security needs.
• Upgrading Solaris kernel and applying necessary patches.
• Performing online addition of LUNS to the servers for provisioning disk space, and resizing file systems.
• Manage systems using remote consoles like ILO for HP Hardware and HMC for IBM P-series
• Upgrading service controller firmware on T2000/T5220 servers.
• Installing BMC package for data collection, Tivoli package for monitoring, ESM package for monitoring configuration files and troubleshooting.
• Implementation of SSH for secure transfers and implementation of PKI between servers to enable password less logins between servers.
• Involved in data center migration, SAN switch and SAN storage migration.
• Monitoring system resources, disk usage, scheduling backups and restore.
• Performed root cause analysis of technical issues.
• Configuring and troubleshooting NFS, FTP and SSH for users.

Environment:

Red Hat Enterprise Linux 5.1, HP Proliant servers BL460, BL685, IBM P550, P590, Enterprise scheduling Product, Tivoli Storage Manager, Veritas Volume Manager, Veritas Clusters.

Confidential

System Administrator

Responsibilities:

• Involved in Building and configuring Red Hat Linux Servers 5 using Kick Start server as required for the project.
• Performed server upgrades from Solaris 8 to 9 and Upgraded Red Hat Linux 4.x to 5.x
• Problems and performance issues deployed latest patches for Linux Application servers, Performed Red Hat Linux Kernel Tuning for TCP stack.
• Applying new patches and packages on Linux.
• Configured and performed troubleshooting Samba over Red Hat Linux Servers.
• Configuration of NFS, AutoFS on Red Hat and AIX Servers.
• Upgrade of Veritas 3.2/3.5/4.0 to Veritas 4.1 version on Solaris 8 and 9 servers
• Experience with handling of resource groups and service groups in the cluster environment
• Configuration of virtual IPs as per client's request.
• Sudo administration and Red hat Linux package administration using rpm and YUM
• Expertise in Red Hat Linux backup/restore with tar including disk partitioning and formatting.
• Provided 24x7 on call support on rotational basis
• Performed SAN allocation to the Solaris servers depending on the requirements of the client.
• Configuring various applications and products on a wide range of Sun Enterprise servers
• Experience with Veritas Volume manager and File system
• Installation of packages and patches on Solaris, and AIX servers.
• Performed firmware upgrade on the pseries AIX servers
• Upgraded the AIX systems Maintenance levels
• Installation and configuration of Sun Solaris operating systems
• Using various monitoring tools like top, sar, vmstat for tuning the systems for maximum efficiency.
• Maintained records for hardware, status of backup and also documented procedures.

Environment:

Solaris 9, 10, AIX 5.2, p series 550, 570, RS/6000 R50, E4500, Autosys, VERITAS Volume Manager, VERITAS Netbackup, SUN Enterprise 420R, 450, V490, 3500, 4500, 6500, 8800.

Confidential

System Administrator

Responsibilities:

• Incident management for Unix Servers Solaris, Linux and AIX
• Installation of patches and other software packages in Linux environment.
• Primary responsibility includes building and supporting Solaris/ Red hat Linux 3, 4 servers.
• Disk and File system management through Solstice Disk Suite on Solaris and other logical volume manager for other flavor of UNIX.
• Installation of Oracle Patches and Troubleshooting, Creating and modifying application related objects, Creating Profiles, Users, Roles and maintaining system security.
• Configuration and maintenance of NIS, NFS, DHCP and DNS Servers.
• Administrative tasks such as System Startup/shutdown, Backup strategy, Printing, Documentation, User Management, Security, Network management, dumb terminals and devices carried out.
• Expertise in Red Hat Linux backup/restore with tar including disk partitioning and formatting.
• Performed the administration of the Domain Name Server and configuration of the Database Files.
• Troubleshooting Backup and Restore problems and performed Day-to-Day trouble shooting for the end users on Solaris based applications.
• Performed OS upgrades and Patch loading as and when required.
• Backing up and restoring files across the network
• Responsible for Installation of various software components on several servers.
• Installed and Configured Sendmail Utility on Sun UNIX Servers.
• Administering NFS Mounts.
• Worked with other IT teams, customers users , and other managers in helping build and implement systems and standards.
• Troubleshooting Backup and Restore problems.

Environment:

Sun Solaris7/8, Redhat Enterprise Linux3.x, SunFire 4500/V880 /V480/E420R/E450/E250, IBM, Sun StorEdge L280, Sun StorEdge A1000, A5000, JBODs Compaq servers, Solstice Disk Suite, Oracle 7.x/8.x.