SUMMARY:

• Over 7 years of experience as a System Administrator in various flavors of UNIX/Linux Red Hat Linux, AIX, Solaris, SUSE and HP UX .
• Strong knowledge on Virtualization VMWARE ESXi, VMWARE Workstation, Solaris Zone and LDOM .
• Extensively worked on development of Automation Tools using shell scripts, Perl and python.
• Extensively worked on Web services LAMP, Websphere Installation and Configuration.
• Extensive knowledge in Configuration of Firewalls, ACLs and third party Authentication Servers.
• Extensively worked on Automatic Scripting using shell scripts bash, awk, sed .
• Installation, up gradation, Configuration and Capacity Planning of Unix/Linux infrastructure for mid to large data centers in Distributed Environment.
• Monitoring and administrating of Red Hat Linux on Enterprise class servers and Sun Solaris Servers for operating systems, patches, packages, hardware, firmware drivers etc.
• Expertise in performing Disaster Recovery Tests.
• Expertise in Building and supporting environments consisting Testing, Contingency, Production and Disaster Recovery Servers.
• Experience in using hardware HP Smart Agent and software RAID 0/1/5 installation, configuration of volume management using VERITAS Volume Manager 3.5/4.x/5.0 and Logical Volume Manager.
• Extensively worked on VERITAS File System 3.x/4.x/5.0 , VERITAS Cluster 3.x/4.x , VERITAS Volume manager and Logical Volume manager for disk management and mirroring.
• Expert in Installing, configuring and maintaining DNS, NIS, NIS , NFS, DHCP.
• Configuration of SNMP in Routers/ Switches for Nagios application.
• Support and maintain the Microsoft Active Directory, Microsoft Exchange, Microsoft Windows Server and other applications.
• Experience in planning, documenting and supporting high availability, data replication, business persistence, fail-over and fail-back processes.
• Experienced in configuring and managing Splunk tool on UNIX machines.
• Expertise in systems performance monitoring tuning: CPU, disk, memory and network utilization.
• Extensively worked on System configuration management tools puppet, cfengine .
• Experience in setting up network environment using ufs, zfs, nfs, nis, sshd, dns and dhcp.
• Strong knowledge on Configuration Management SVN, Git setup and maintenance.
• Proficient in Installation, implementation and configuration of LDAP directory infrastructures.
• Proficient in backup utilities, restoring using Veritas Netbackup.
• Experience in migration of Physical to Physical and Physical to Virtual servers.
• Experience working on LAN/WAN and TCP/IP Protocols Telnet, FTP, SSH etc .

TECHNICAL SKILLS:

PROFESSIONAL EXPERIENCE:

Confidential

Linux/UNIX Systems Administrator

Responsibilities:

• Experience working on Unix/Linux System and Network administration in Sun Solaris 9/10, 11 , HP-UX 10.x, 11.x Linux RedHat 3/4/5/6 SUSE 9/10/11 including design, engineering and building servers as per requirement.
• Storage Provisioning, Volume and Filesystem Management using LVM, Veritas Volume Manager and Veritas Filesystem Veritas Storage Foundation , Configuring ZFS file systems.
• Experience supporting Java applications like Weblogic and JBoss running on RedHat Linux and Solaris.
• Experience and Familiar with Virtualization technologies like installing, configuring, administering VMware ESX/ESXi3.5 and 4.0, 4.1, 5.0. Created and managed VMs virtual server and also involved in the maintenance of the virtual server.
• Experience in configuration and maintenance of Nagios, Apache, MySQL, kickstart, NFS, CIFS, SSH, NTP, BIND and SNMP.
• Clustering solutions for High Availability using tools such as Veritas Cluster Server VCS , MSCS and RHCS.
• Proven ability to automate server builds using kick start, management and configuration of system services using Puppet.
• Administer Active Directory commands using Powershell scripting.
• Configuring and maintaining virtual server environment using VMWARE ESX, VCenter, VSphere, and Solaris 10 Zones.
• Writing shell scripts for Batch Processing, Error logs for the Automated Back-ups and Cron Jobs.
• Applied Patches to Wintel servers for different customers. Responsible for stop/start of the application before applying the patches.
• Installation and Configuration of Sun Enterprise Servers, HP and IBM Blade Servers, HP 9000, RS 6000, IBM pSeries.
• Configured Enterprise Unix/Linux systems in heterogeneous environment Linux RedHat SUSE , Solaris, HP-UX with SAN/NAS infrastructure across multiple sites on mission business critical systems.
• Setting up the lab environment with Tomcat/Apache, configuring the setup with F5 virtual load balancer for customer application.
• Experience in the V2V and P2V migration of Physical servers to VMware ESX hosts.
• Extensively worked on creating VM instances using VMware/ESX on Linux and Sun Servers and migrating applications from others servers.
• Experience with VMware Virtualization using ESX hypervisor of Vsphere 4.0.
• Support a Windows network Domain Management and Active Directory and Linux administration and security issue remediation as well as TCP/IP, DNS, Windows 2000, HTTP and FTP.
• Setup, Implementation, Configuration, documentation of Backup/Restore solutions for Disaster/Business Recovery of clients using OMNIBACK on UNIX and SUSE RedHat Linux platform.
• Involved in supporting different HW ranging from Rack to Blade like C7000 and also supported Cisco UCS and Vblock HW to run ESX environment.
• Performed quarterly patching of Linux, AIX, Solaris and HPUX servers on regular schedule. Involved in up Network/SAN based ignite images for HPUX PA RISC and integrity servers.
• Good knowledge of RAID groups and setting up NFS, CIFS and iSCSI protocols in SAN/NAS environment on HPUX 11.23/11.31 and RedHat Linux.
• Perform log analysis using splunk.
• Experience installing and managing different automation and monitoring tools on RedHat Linux like Nagios, Splunk and Puppet.
• Used Splunk tool to get reports from UNIX machines. Acted as a secondary point of contact in maintain Splunk tool.
• Experience in migrating VMware ESX 3.5 to ESX 4.0 vSphere ESXi 4.1 to ESXi 5.0.
• Implementation of oracle RAC 10g on HPUX blades and Itanium servers with RedHat Linux RHEL 4.0/5.0 along with SAN storage on EVAs. Also implemented and support HPUX Service guard on Linux servers.
• Involved and set up migration for UNIX/Linux server and SAN storage between data centers and also application migration and testing. This has included SAN/Application migration and testing various functionalities of key applications.
• Installing, setup of proliant blade BL,DL series with fiber channel connectivity, Cisco GESM interconnect switch, configuring the connectivity, setting up JBOSS cluster, setting up oracle 10g cluster, configuring load-balancing on apache, on RedHat Linux 4.0/5.0 Setting up NIS/NFS on RedHat servers.
• Setting up JBoss cluster and configuring apache with JBoss on RedHat Linux. Proxy serving with Apache. Troubleshooting Apache with JBoss and Mod jk troubleshooting for the clients.
• Setting up the lab environment with Tomcat/Apache, configuring the setup with F5 virtual load balancer for customer application.

ENVIRONMENT: Red Hat Linux 3,4.x,5, RedHat 3/4/5/6 SUSE 9/10/11, Unix, Sun Solaris 9/10, 11, HP-UX 10.20, 11.0, 11i, Splunk, Puppet, VMWare, Veritas Volume Manager, Veritas Cluster Server, SAN, Oracle 10g, AIX, ESX.

Confidential

Linux/UNIX System Administrator

Responsibilities:

• Installation, Configuration, Administration Trouble Shooting of Solaris, Linux, AIX and HP-UX Operating system.
• Experience in Server build using Jumpstart and HPSA Process on multiple servers.
• System builds from the scratch for UNIX and Linux system using manual and automated Jumpstart, Kickstart installation.
• Installed and upgraded VMware vSphere ESXi 5.0/4.1/4.0 and ESX server 4.1/4/3.5 in a total of 250 ESX servers, 1000 Servers.
• VMware ESX/ESXi Host Server Installation, Configuration Maintenance.
• Installation and Configuration of Network Servers dhcpd, vsftpd, httpd, LDAP .
• Created Volume Groups, Logical Volumes and formatted with ext3/4 file system.
• User administration through power broker and power password tools.
• Maintained and monitored network security and usage using different tools like Microsoft Network Monitor, WireShark, Cacti and Nagios.
• Installation and configuration of Apache and Tomcat web servers.
• Installation, Configuration and Administration of High Availability VERITAS Cluster Servers and RedHat Cluster Server for failover and redundancy purpose.
• Added Service Groups and resources based on the requirement with appropriate dependencies in Active/passive and Active/Active Cluster Server configuration. Documented the in change design/Architecture diagram of VERITAS Cluster Servers.
• Creation, Installation and administration of Red Hat Virtual machines in VMware Environment.
• Configuring and Deploying Virtual Machines under VMware ESX Servers to install Red Hat Linux guests.
• Troubleshooting and desktop support of the VMware V Sphere 4.01/4.1.
• Installed and configured Access control for VERITAS Net Backup servers and clients.
• Installation and configuration of VERITAS Volume Manager, VERITAS File System and VERITAS Cluster Server.
• Disk and File system management through VERITAS Volume Manager.
• Installation Configuration and maintenance of HP Service Guard Clusters. Configured and Maintained packages in Service Guard.
• Configured Zettabytes file system ZFS Storage pools with mirrors, logs and caches, Quotas, snapshots and clones.
• Performed User account administration using Active directory.
• Installed VMware Vsphere Hypervisor ESXI 5.1 with virtual machines running Ubuntu and CentOS for hosting real time communication based projects.
• Managed physical and Logical volumes, Volume Groups using Logical Volume Manager in Linux and HP-UNIX and also did migrations from LVM to VXVM.
• Created CMR and followed proper process to validating and closing project/SR.
• Supported for Java based web applications.
• Installation and configured zones and containers for applications.
• Trouble shooting of day to day system administration and user problems.
• Maintenance of Source code, direct interacts with development, migration, testing database teams.
• Monitoring, Capacity planning and recovery management for production servers.
• Performance monitoring and tuning of UNIX servers.

ENVIRONMENT: Solaris 10/9/8/2.x, HP-UX 11.0/11.11, AIX 4.3, 5.1/5.3L, Sun Fire 4800/3800/ V880 and Sun E10K and E15K Servers, VMWare, VERITAS, Sun Enterprise 6500/500/4500/450/ 420R/250 Servers, HP 9000 K, L, N class server, Fujitsu Server, IBM RS/6000, pSeries servers, RAD 6.1, AS/400.

Confidential

Linux System Administrator

Responsibilities:

• Installation, Upgrading and configuration of RedHat Linux and Windows 2000 servers.
• Installed and Configured LAMP Server.
• Deployed latest patches for, Linux and Application servers, performed RedHat Linux Kernel Tuning.
• Implementation of Samba to help printing and file sharing in the mixed Environment.
• Installing and setting up Oracle8i on Linux for the development team.
• Involved in creating new users, groups and setup their home directories and appropriate access restrictions to software and directories files.
• Developed Korn and Bash shell-scripts to automate routine activities.
• Migrated database applications from Windows 2000 Server to Linux server.
• Configuring Windows Machines in Work Group Environment.
• Create system images with Norton ghost.
• Performance Monitoring System tuning.
• Utilized Microsoft Active Directory AD to manage objects, policies, users and groups.
• Managed Virtual Memory and swap space on RedHat Linux Servers.
• Configuration of DNS, APACHE, MAIL, DHCP FTP Servers in RedHat Linux 3.x/4.x.
• Scripting and task automation using Crontab, Bash, and Korn shell scripting.
• Implementing Raid levels and changing Boot PROM values according to the requirement.
• Configuring modems printers.
• Documenting the configurations, changes made on any part of System and Network.
• Involved in Backup of data on DAT tape drive, security, performance and availability of system and network.
• Provided support by 24x7 shift rotation basis and pager support.
• Monitored trouble ticket queue to attend user and system calls, attended team meetings, change control meetings to update installation progress, and for upcoming changes in environment.

ENVIRONMENT: RedHat Linux, Windows 2000, Apache, Oracle8i, Samba, Virtual Memory, DNS, APACHE, MAIL, DHCP FTP.

Confidential

System Administrator

Responsibilities:

• Installation and configuration of RedHat Linux and Windows NT servers.
• Involved in user account Administration.
• Installed and configured Patches and Packages.
• User account management and support.
• Performance Monitoring System tuning.
• Involved in managing local disk devices.
• Remote installation, configuration and troubleshooting of printers, software and business applications.
• Created File systems, Mount, Umount the filesystems.
• Written Shell scripts to run Batch Jobs using cron and at.
• Responsible for configuring real time backup of web servers.
• Log file was managed for troubleshooting and resolving errors.
• Responsible for reviewing all open tickets, resolve and close any existing tickets.
• Documented solutions for any issues that have not been discovered previously.
• Trouble shooting the system and end user issues.
• Involved in documenting of Linux and Windows environment and configuration details.

ENVIRONMENT: RedHat Linux, Windows NT, Web servers, Windows.