SUMMARY

• 6+ Years of experience as Linux/UNIX system administrator on Red Hat EL 4.x, 5.x, 6.x, Debian, CentOS 4.x, 5x, FreeBSD, IBM AIX, HP - UX,Solaris 8,9, 10 and VMware ESX environment.
• Extensive experience with RAID using Volume Management Software like Logical Volume Manager, Veritas Volume Manager, Solaris Volume Manager.
• Experienced in Installation of Operating Systems, Packages and Patches, adding peripherals, maintaining user accounts, System Security maintenance, backup/recovery, performance tuning, troubleshooting at various levels etc.
• Extensive experience with Kickstart in Redhat Linux,Jumpstart in Solaris, Ignite in HP-UX .
• Hands on experience in configuration management systems like Puppet, Cobbler, Blade logic
• Expertise in implementation and maintenance of NFS, NIS, DNS, LDAP SAMBA, Sendmail, FTP services.
• Excellent knowledge of clustering techniques to ensure high availability and GFS deployment.
• Hands-on experience in writing Bash, Shell, Perl scripts.
• Experienced in implementing and administering VMs using VMware ESX 3.1 and vSphere 4.x and vCenter and building KVM Hypervisor. Also worked with Solaris 10zones to implement virtualized environments in the Solaris environment.
• Extensive work knowledge on Storage Area Networks (SAN), EMC Symmetrix, CLARiiON CX300 Storage Arrays and Dell Equalogic storage.
• Hands on experience on Installation, automation, deployment ofOpenStack
• Excellent knowledge of load balancing and clustering techniques to ensure high availability.
• Security management like performing security health checks as per policies / procedures, patching the servers based on the advisories for the applications and operating systems.
• Hands-on experience with Veritas Cluster Server and VeritasNetBackup.
• Experience in networking concepts like DHCP, TCP/IP, IP Addressing, Networking Technologies and WAN LAN.
• Experience in OSI layer(layer7)
• Experience in installation and configuration of Apache 1.3.x, Tomcat, WebLogic 9, 10, and JBoss.
• Hands-on experience in diagnosing, troubleshooting various networking, hardware & Linux/ UNIX server’s services issues and performing preventive maintenance.
• Experienced in writing / modifying scripts for process automation of systems, applications, backups etc.
• Experienced in Websphere applications server.
• Experience in installation of SVN, Jenkins, Artifactory and Tomcat Apache.
• Experience in installation and configuration of a monitoring tool, Nagios (NRPE)and Zabbix
• Installed and implemented open source OpenFiler 2.3, iSCSI SAN with RAID 10for VMware and other servers with iSCSI initiators. Also managing iStor SAN and Symantec Backup Exec 12.
• A quick learner with excellent problem-solving and interpersonal skills.
• Self motivated, goal-oriented, good team player, and highly adaptive to changes.
• Self starter, self motivator and quick learner. Excellent interpersonal communication skills. Strong problem solving skills. Ability to work in a team or on an individual basis.
• Open for relocation.

TECHNICAL SKILLS

Operating Systems: Linux (RHEL, Debian, CentOS),Free BSD IBM AIX,HP-UXVMware ESX, Open Solaris, MS Windows server.

Protocols and Services: TCP/IP, TELNET, FTP, SSH, SCP, ARP, DHCP, SMTP, TFTP, NFS, DNS, NIS, Network Essentials-OSI, LAN/WAN, Switches, Hubs, Fiber Channel, SAN, NAS, iSCSI.

Hardware: Sun Fire V280, V480, V880, V6800 SUN Blade 6000. Dell Poweredge 1650, 2850, 2950, 6400, IBM RS6000 and P-series servers ranging from F50, H80, F85, P610, P615, P630, P590, P570, P595. EMC Symmetrix, Sun Storage Array D1000, A5000, Hitachi arrays, Backup devices, Ethernet Hubs, Routers, Jukebox, Printers.

Automation/Scripting: Kick start (Linux), Jumpstart (Solaris) Puppet, Cobbler, Bladelogic,Jenkins Bash, Shell, Perl, Python

Software: Red Hat Cluster Suite, Veritas cluster server 3.x, 4.x, 5.x, 6.x, Veritas volume manager 3.5, 4.x, 5.x,, Veritas File system, Veritas Cluster File system, Veritas netback up), VMware ESX 3.5, vSphere 4.0.

Databases & Languages: Oracle 8i, 9i,10g,11g, MySQL, SQL Server, PL/SQL, C, C++, JavaScript

PROFESSIONAL EXPERIENCE

Confidential, Denver, CO

Linux/VMware Administrator

Responsibilities:

• Building Physical as well as Virtual (VMware) Servers.
• Mass Build of Linux/Solaris OS servers using kickstart /jumpstart automation application.
• Installation of Oracle 11g and Sybase open-client, Apache 2.x on Linux environment.
• Creating and cloning virtual machines in VMware environment using Virtual Infrastructure client 3.5 and Vsphere 4.0.
• Configuring Puppet-master, Puppet-agent and writing manifests.
• Worked extensively with Network File System (NFS) for storage.
• Creating logical volumes, extending the filesystems using LVM.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Patch Management, Package Installation/Upgrades and Kernel upgrades
• Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues
• Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
• Installed/Configured the WebSphere server, JBoss application server, Weblogic server; Managed tuning and performance of high profile applications running on them.
• Configuration and Administration of Load balancers and F5's, taking servers in/out of rotation.
• Software package and patch administration, involving adding and removing software packages and updating patches.
• Installation, Configuration and managing firewalls like Fortinet, ZyWall, SonicWall, Anti Spam, Web filtering, Port forwarding.
• Handling problems or requirements as per the ticket (Request Tracker) created.
• Configuration and administration of LDAP, NFS and NIS in Linux and also implemented Samba for sharing of resources between Linux and Windows environments.
• Writing shell scripts for Automated Back-Ups and Cron Jobs.
• Configuration and troubleshooting - LAN and WAN TCP/IP issues.
• Worked in OSI Layer(Layer7)
• Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostat etc) and tuned I/O, memory, etc.
• Maintained proper documentation of all the activities carried out during the project.

Environment: Red Hat Enterprise Linux 4.x,5.x, Sun Solaris 8,9,10, VERITAS Cluster Server, Veritas Volume Manager, Oracle 11g, HP UX, MS Windows Server, JBoss, Tomcat, Apache, Weblogic

Confidential, Atlanta, GA

Linux System Admin

Responsibilities:

• Patching of RHEL5 and Solaris 8, 9, 10 servers for EMC Powerpath Upgrade for VMAX migration.
• Configuration of LVM (Logical Volume Manager) to manage volume group, logical and physical partitions and importing new physical volumes.
• Responsible for Building of Linux/Solaris OS servers using kickstart /jumpstart automation application.
• Documented the standard procedure for installation and deployment of VMAX Migration and logical volume manager.
• Installation, configuration, support and security implementation on following services:DHCP, SSH, SCP.
• Working withBlade logic environment.
• Performing Post Build activities like Setting up Backup interface/ NIC bonding/ Loading additional Packages/ Joining the server to Active Directory, etc.
• Configuration and administration of NFS and Samba in Linux and Solaris.
• Worked on Puppet environments to write manifests.
• Maintained and monitored all of company's servers’ operating system and application patch level, disk space and memory usage, user activities on day-to-day basis.
• User administration on Sun Solaris and RHEL systems, HP-UX machines, management & archiving.
• Installations of HP Open view, monitoring tool, in more than 300 servers.
• Worked with monitoring tools as Nagios and Zabbix
• Installed and Configured Tomcat and Jboss for Web Application deployment.
• Creation of VMs, cloning and migrations of the VMs on VMware vSphere 4.0 and building KVM Hypervisors also Worked in clustering techniques to ensure high availability and GFS deployment.
• Worked with DBA team for database performance issues, network related issue on Linux / Unix Servers and with vendors for hardware related issues.
• Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
• Administering and Performance Tuning of WebSphere Application Server.
• Expanded file system using Solaris Volume Manager (SVM) in the fly in Solaris boxes.
• Managed and upgraded UNIX’s server services such as Bind DNS.
• Configuration and administration of Web (Apache), DHCP and FTP Servers in Linux and Solaris servers.
• Supported the backup environments running VERITAS Net Backup 6.5.
• Responsible for setting cron jobs on the servers.
• Decommissioning of the old servers and keeping track or decommissioned and new servers using inventory list.
• Handling problems or requirements as per the ticket (Request Tracker) created.
• Participated in on-call rotation to provide 24X7 technical supports.

Environment: Red Hat Enterprise Linux 4.x, 5.x, 6.x, Sun Solaris 8, 9, 10, VERITAS Volume Manager, Oracle 11g, Samba, Oracle RAC/ASM,EMC Power path,IBM WebSphere Application server, DELL PowerEdge 6650,HP Proliant DL 385, 585, 580, Sun Fire v440, SUN BLADE X6250, X6270, Tomcat, JBoss

Confidential, Minneapolis, MN

Linux Administrator

Responsibilities:

• Installation and Configuration of Redhat, CentOS, Solaris 8, 9, 10, SLES 9, 10 servers.
• Installation, configuration and management of Apache and Tomcat servers.
• Performing Nessus Scan on quarterly basis to scan for vulnerabilities in Web and Application servers.
• Applying patches to fix the holes that are found during the quarterly scan basis using Nessus scan.
• Upgraded and maintained servers, operating Systems and patches.
• Install/configure/maintain the Linux /Solaris servers, NIS, DNS, NFS, Mailing List, Sendmail, apache, ftp, sshd.
• Managed NetaPP FAS 920 Storage and implemented RAID.
• Configuring and managing Novell HA cluster in SLES 10.
• Configuring and optimizing open-iSCSI in RHES for SAN using iOmega technology.
• Install host firewall IPTables for Redhat Linux.
• Installed and configured SAMBA server for Windows and Linux connectivity.
• Performed TCP/IP, DNS and DHCP administration.
• Setting up Oracle 10g server in Linux/Unix environment.
• Supported Oracle DBA in the implementation of Oracle 9i RAC.
• Administering and Performance Tuning of IBM products like MessageBroker.
• Installed and monitored administering and monitoring tools such as Webmin and Nagios.
• Maintained and monitored all of company's servers’ operating system and application patch level, disk space and memory usage, user activities on day-to-day basis.
• Performed routine LVM tasks like replacing failed drives, adding new volume groups, extending volume groups/LVM/file system, exporting and importing volume group for hardware migration.
• Administered Backup and Restore operations using Veritas NetBackup 5.1.
• Monitored and fine tuning system and network performance for server environments running Redhat Linux, Solaris.
• Troubleshoot various systems problems such as application related issues, network related issues, hardware related issues etc.

Environment: Red Hat Enterprise Linux 4.x,5.x, CentOS, Debian, Cisco, Veritas Cluster Server, Oracle 9i, MS Windows 98/2000/NT/XP, IBM MessageBroker, Oracle RAC/ASM, Porta-one soft switch, MS Windows Server 2003, 2008.

Confidential, DFW, TX

Jr. System Administrator

Responsibilities:

• Installation and configuration of Red HatLinux, Solaris, Fedora and CentOS on new server builds as well as during the upgrade situations.
• Log management like monitoring and cleaning the old log files.
• System audit report like number of logins, success & failures, running cron jobs.
• System performance for hourly basis or daily basis.
• Remotely coping files using sftp, ftp, scp, winscp, and filezilla.
• Created user roles and groups for securing the resources using local operating System authentication.
• Experienced in tasks like managing User Accounts and Groups, managing Disks and Filesystems.
• Install and configure Instruction Detection System (IDS) like Tripwire, Snort, and Lids.
• Configuring & monitoring DHCP server.
• Taking backup using tar and recovering during the data loss.
• Experience in writing bash scripts for job automation.
• Documenting the installation of third-party software’s.
• Configuring printers to the Solaris and Linux servers and also installing third party softwares.
• Maintaining relations with project managers, DBA’s, Developers, Application support teams and operational support teams to facilitate effective project deployment.
• Manage system installation, troubleshooting, maintenance, performance tuning, managing storage resources, network configuration to fit application and database requirements.
• Responsible for modifying and optimizing backup schedules and developing shell scripts for it.
• Performed regular installation of patches using RPM and YUM.
• Maintained LVM, VxVM and SVM filesystems along with NFS.

Environment: Linux ( Red Hat Enterprise, CentOS), Windows 2000/NT, HP, IBM, Solaris, Oracle 8i, Cisco routers/switches, Dell 6400, 1250, Sun E450, E250.