PROFESSIONAL SUMMARY:

• Around 8 years of Versatile IT experience, highly motivated and committed System Administration working on RedHat Linux, Solaris, Capacity Planning and Troubleshooting UNIX servers, Managing and Administering, SUSE Linux, RHEL 4/5/6, AIX, Centos, Fedora, OEL, Windows environments, and VMware vSphere.
• Expertise in Installation, Configuration and administration of Red hat Linux 4x, 5x,6x Solaris 7, 8, 9, 10, Ubuntu 14
• Extensive experience in Installation, Configuration and Troubleshooting of various web server issues including Netscape Enterprise Server 4.0, http server, Apache Web Server 2.x/1.x, Tomcat 5.x/4.x/3. x.
• Red Hat Linux - based Virtualization implementations such as VM Ware and Citrix Client Tools.
• Experienced in supporting database systems including Oracle, MySQL on Linux/Unix.
• Involved in creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.
• Scheduling various cron jobs for backups, database, and proprietary jobs using CRON and BMC Control-M and troubleshooting daily job problems.
• Experience in setting up RAID and troubleshooting the issues on various Servers like Solaris and Red Hat Linux.
• Expertise in Veritas Volume manager (VxVM), creating new file systems, mounting file systems and un mounting file systems
• Server Consolidation and Migration of Oracle and Java Applications.
• Expertise in implementation and maintenance of DHCP, NFS, NIS, DNS and SMTP.
• Configuring and Monitoring using NAGIOS.
• Efficiency in installing, configuring and implementing the RAID technologies using Veritas Volume manager and Solaris Volume manager.
• Hands on experience Scheduling a job using autosys R11 architecture with various components (Application server, scheduler, Event Server, Remote agent, eEEM aka eIAM, WCC).
• Worked on Networking and communication devices, Server Utilities, TCP/IP, FTP, SSH and file sharing using NFS/Samba shares.
• Expert in data center operations including hardware, software setup monitoring, troubleshooting on a 24 x7 basis with BMC remedy, Unicenter & Smart trouble ticketing Systems/kintana tickets etc.
• Experience in supporting Production environment, monitoring the incidents and resolving before reaching the SLA.
• Coordinated with SAN Team for storage allocation and Disk Dynamic Multi pathing.
• Installation of web logic, upgraded to service pack updates, installed BEA Patches, configuring and creation of new domains, start and stop web logic Server. Used open source tools like Syslog-ng for logging security.
• Performing troubleshooting production issues, root cause analysis and preventive actions. Excellent problem resolution and communication skills with ability to work under pressure in a highly visible role.
• Developed shell/bash automation scripts.
• Excellent Communication, Analytical skills and Interpersonal skills. Exceptional ability to learn new concepts and adapt quickly.
• Skilled at accessing client needs, working in a group, suggesting ideas that enhance Efficiency and Maximize Performance.

TECHNICAL SKILLS:

Web Severs: Apache 2.x/1.x, IBM Http Server, Tomcat 5.x/4.x/3.x.

Operating Systems: Red Hat Linux 4.x/5.x/6.1,IBM AIX5.x, 6.x, 7.1, Sun Solaris 8, 9, 10SUSE Linux 9, 10,Cent OS .

Web/Application Servers: Web Logic 7.0/8.1/9.x/10.x, JBOSS, Tomcat, Web sphere 5.x/6.x, HTML, JavaScript, XML, EJB

Software: Veritas File System, Veritas Volume Manager, Solistice Disk Suite 4.x., Veritas Net Backup, Samba, Tivoli(TSM).

Hardware: IBM F-Series & P-Series, IBM RS6000, Sun Storage Array D1000, A5000Series, Workstations 700 series, Dell Power Edge 1300/1500/6650/2650/2950 Servers.

Scripting Languages: Bash, KSH, Perl, SQL, Python Ruby.

Networking: TCP/IP, NIS, NFS, DHCP, DNS,WAN, SMTP, Confidential Routers/Switches, TELNET, FTP/TFTP, SNMP, LDAP

PROFESSIONAL EXPERIENCE:

Confidential, Thousand Oaks, CA

Sr. Linux Administrator

Responsibilities:

• Installation, configuration and Operating System upgrade on Sun Solaris 10, SLES 11.x and Red Hat Linux 5.x,6.x on HP, Dell servers.
• Installed of all the required Software, patches, documentation, licensing trouble shooting. Used Symantec Enterprise Security Manager for system integrity check on newly build servers
• Performed installation, configuration and maintenance of Red Hat Linux 5.x,6. x.
• Provided 24x7 System Administration support for Red Hat Linux 5.x,6.x, Cent OS servers and resolved trouble tickets on shift rotation basis.
• Used YUM to patch RHEL servers, configured local and FTP repositories and used zipper to install packages on SUSE Linux.
• Handling HP and DELL servers running on Red Hat Linux and SUSE (SLES 10/11)
• Performed planning and implementation and management of NIM Master server & NIM clients.
• Developed bash script for getting information about various Red Hat Linux servers and automated cron jobs.
• Maintaining CPU, Memory resources on Micro partition VIO Server’s and Client’s environments.
• Worked on EMC disk storage to allocate disk space.
• Responsible for taking system backups using mksysb, mkcd, savevg. Also performed system backups through NIM and created archives of various software.
• Creating and managing LVM’s using parted, fdisk.
• Configuring and Administering DNS, NTP, NFS and LDAP
• Hardware Maintenance and System Administration of existing production environment.
• Experience in Servers consolidation and virtualization using VMware virtual infrastructure, VMware ESX
• Installed and maintained IBM Tivoli Storage Manager (TSM) for Backups and data storage.
• Good understanding of web services software architectural and design issues.
• Monitored overall system performance, performed user management, system updates and disk & storage management.
• Installed, configured and monitored server by BMC Patrol, NMON & PTX.
• Performed daily backups, restoration of data as per requests from developers using Veritas NetBackup.
• Performed Red Hat Linux kernel, memory upgrades and undertook Red hat Linux Kickstart installations.
• Created users, manage user permissions, maintain User & File System quota on RedHat Linux and AIX.
• Performed troubleshooting, tuning, security, backup, recovery and upgrades on all the Linux servers.
• Production support of Apache Tomcat including installation, configuration, management and troubleshooting
• Setup of full networking services and protocols on UNIX, including NIS/NFS, DNS, SSH, DHCP, TCP/IP, ARP, applications, and print servers to ensure optimal networking, application, and printing functionality.
• Installed and configured Sudo for users to access the root privileges, setup ACL permissions for set of users.
• Performed troubleshooting of CPU bottle necks, memory bottle necks and gave suggestions on performance improvements, analyzed performance issues through top, ps, vmstat, cpustat, PERFPMR.

Environnement: Red Hat Enterprise Linux 5.x/6.x, SUSE Linux 10/11, Tivoli Storage Manager, Logical Volume Manger for Linux and VMware ESX Server 2.x, Samba 3.0, Veritas NetBackup, Apache, HACMP, HMC, ILO, RAID, WebLogic, IBM P570, P590, P595, Dell 2400, 2450, 2850, 2950.Hitachi disk Arrays

Confidential, San Jose, CA

Sr. Linux/ Unix Administrator

Responsibilities:

• Performed installation, configuration and maintenance of Red Hat Linux 5.x,6.1
• Kick started and build various Red Hat Linux servers using Kick start profiler and Tivoli Provisional Manager (TPM)
• Kickstart RHEL 6.1 servers on regular basis in order to test lot of Global Security Framework (GSF) packages approved by engineering team.
• Build zLinux boxes for functionality testing of GSF packages on s390x platforms
• Used to test functionality of various RFT by having various SSH, ILO, DRAC. Sessions.
• Installed and configured VIO server on IBM AIX 5.3 based P-Series 570/ 550 servers.
• Worked extensively on LPARS/ DLPARS for functionality testing of AIX packages.
• Registered lot of RHEL and zLinux boxes to Enterprise Security Management(ESM) Backend servers in order to get BCM/CFM reports of the RHEL and zLinux servers
• Registered RHEL and zLinux boxes to ITM Tivoli Monitoring agents for sanity check of the boxes.
• Configuring and Administering DNS and LDAP on AIX and RHEL server environment
• Update crontab entries which runs regularly, to report various RHEL and zLinux servers to backend server (ConfigDB ), which looks for any possible VTMs ( Vulnerable Threat Management).
• Worked and edited Bash and Shell Scripts when required to register RHEL servers, renew SSL certificates.
• Performed daily backups, restoration of data as per requests from developers using Veritas NetBackup.
• Created users, manage user permissions, maintain User & File System quota on Red Hat Linux and AIX.
• Performed system-monitoring with the help of tools like TOPAS, SAR, VMSTAT, IOSTAT to report systems usage and performance
• Monitoring the servers with tripwire host based intrusion detection system (IDS).
• Creating a baseline for Servers and monitoring the unauthorized changes to the files and directories.
• Managing UNIX Infrastructure and Net app, EMC storage involving maintenance of the servers and troubleshooting problems in the environment.
• Responsible for using the API in Red Hat satellite to script commands inside it and also to exchange information with other management products.
• Experience working with Red Hat satellite capsule server.
• Generated report on the Performance of the VM's and ESX servers using Virtual Center.
• Provided Administration access to User and Domain groups based on the request from the application owner to Guest OS.
• Ability to interact with Oracle admin, Install, Configure & manage Oracle servers.
• Worked with Oracle DBA team for the configuration of file systems like extending online file system as when required using VxVM.
• Monitored and configured security packages such as Power Broker, ESM.
• Responsible for maintenance of development tools and utilities and to maintain Korn, Shell, Perl automation scripts.
• Install, configure, maintain and troubleshooting in Net backup 6.x in Enterprise environment.
• Worked on packages like SAMBA in Unix environment.
• Performed Red Hat Linux kernel, memory upgrades and undertook Redhat Linux Kickstart installations
• Installation and configuring MQ 5.3/6.0 on different environments
• Creation of LVM’s on SAN using Red Hat Linux utilities.
• Installed and configured various SAN drivers like firmware, Ipfc drivers, HBAmultipaths,ECC, ECC power paths, allocating various LUNS and checked the functionality of SAN connectivity on various RHEL boxes.
• Installed and configured VCS-SFSCHA (Veritas Clustering File System) between various RHEL 6.1 boxes. Created a common disk storage between Veritas clustered boxes using Vxdiskadm and checked various fail over scenarios to make sure the functionality of Veritas cluster.
• Used to maintain various RHEL and zLinux boxes on two Vcenters on ESX 3.x and ESX 4.x and used to access these boxes through vSphere clients.
• Used to co-ordinate and follow up with engineers by sharing IM sessions to make sure things in order.

Environment: Red Hat Enterprise Linux 5.x/6.1, AIX 5.x, SUSE Linux 10/11, Tivoli Storage Manager, Sun ZFS Storage, Oracle Database, Oracle ST SL8500, Logical Volume Manger for Linux and VMware ESX Server 4.x, Veritas NetBackup, Apache 2.0, Veritas Cluster, WebSphere, HMC, ILO, DRAC, IBM P570, P590, P595, Dell 2400, 2450, 2850, 2950.

Confidential, Washington, DC

Sr. System Administrator

Responsibilities:

• Installing, Managing & troubleshooting all the issues on 1500+ critical Trading production, development and QA servers.
• Administered, Installed and maintained Red Hat Enterprise 5.x, 6.x.
• Maintained and supported 700+ Server in Production in development, Test and Production environments.
• Configured Kickstart and Jumpstart Servers RHEL 4.x/5.x.
• Packaged management and Added patches on Red-hat Linux servers using RPM's & YUM.
• Configured and installed VERITAS file system, VERITAS volume manager and VERITAS cluster server; Troubleshooting and maintaining VCS for failover and redundancy.
• Maintained and configured VERITAS file system, VERITAS volume manager, and VERITAS cluster server.
• Troubleshoot and maintained VCS failover and redundancy.
• Handled and upgraded Sun Cluster, Red-hat Cluster server, VERITAS Cluster server, Zone administration and configuration.
• Configured and Installed WebSphere and Apache servers.
• Accomplished and Deployed NIS and NFS for administrative and project requirements.
• Handled and upgraded Nagios and VERITAS NetBackup for monitoring system resources, logs, disk usage, scheduling backups.
• Used VMware ESX, VMware VCenter, VMware virtual infrastructure for server consolidation and virtualization.
• Involved in IP bonding for load balancing and fail over, Firewall, SELINUX.
• Hosting and securing web pages using Apache (httpd) web server and ssl.
• Installing and configuring the DNS, DHCP servers and assigning IP addresses to client hosts.
• Integrating to Linux domain and windows clients using Samba server.
• Manage and maintaining Squid Proxy Server, Configuring and implementing Bind 9, Web servers (APACHE) and virtual hosting.
• Configuring and implementing LINUX Kernel re-compilation and Implementing file integrity check tools like Tripwire.
• Involved in Creating, deploying and managing Linux and windows VM using RedHat Enterprise Virtualization Manager, which includes moving and migrating VM from one cluster to another cluster or within the same cluster.
• Configured Win-bind on all Linux workstations which enables all the Linux users to be authenticated on Microsoft Windows Active Directory Server.
• Installed and configured RedHat Cluster with GFS2 file systems. Managed the ext3 and ext4 file systems using Logical Volume Manager LVM.
• Involved in resizing ext3 filesystem using LVM without downtime.
• Installed and configured ESXi 4.0, 4.1 Servers on Blade servers.
• Performing VMware crash/error analysis, Root cause Analysis, Coordinate Post Problem Analysis and Trend Analysis.
• Installation, Configuration, Upgrade and administration of Sun Solaris, RedHat Linux.
• User account management and support.
• Jumpstart & Kick-start OS integration, DNS, DHCP, SMTP, Samba, NFS, FTP, SSH, LDAP integration.
• Upgraded and handled Storage, coordinating with vendors on EMC Clarion.
• Worked on adding new Users and groups and give Sudo access in test and development servers and central file synchronization via sudoers, authorized keys, password, shadow, Group.
• Worked with DBA team in installing and configuring Oracle 10 g and 11g, Sybase, Db2 client v 8.1 and v9.0.
• Coordinated with application team in installation, configuration and troubleshoot issues with Apache, Web logic on Linux servers.
• Used VERITAS Volume manager to create disk groups, volumes, volume groups, and RAID's.
• Installed and configured Veritas Storage Foundation Suite, Volume Manager, Cluster Servers & Veritas File systems (Vxfs).
• Installation and Configuration of SSH, TELNET, FTP, DHCP, DNS.
• Local and Remote administering of servers, routers and networks using Telnet and SSH.
• Installed/Configured/Maintained/Administrated the network servers DNS, NFS and application servers Apache and Samba server.
• Worked on LAN/WAN, firewalls, and routing for Internet and Intranet connectivity using different protocols like TCP/IP, DHCP, HTTP/s, FTP, SMTP & SSH.
• Accomplished Disk Mirrors and RAID 0, 1 and 5 levels on several UNIX/LINUX servers.
• Involved in back up, firewall rules, LVM configuration, monitoring servers and on call support.
• Worked on UNIX shell scripting for system/application in automating server task, installing and monitoring applications and data feeding file transfer and log files.
• Worked closely and configured IP Multipathing on existing servers to avoid the downtime in case of Network Migration.
• Handled capacity planning, system performance, and SLA compliance.

Environment: RedHat Enterprise Linux 3/4/5, HP-UX 11.0/11i, AIX 5.1/5.3L, Sun Fire 4800/3800/V880/ Sun Enterprise 6500/500/4500/450/420 R/250 servers, Nagios, EMC Clarion/Symmetric, VERITAS Clusters, HP 9000 K, L, N class server, IBM RS/6000, VERITAS volume manager 4.5, 5, VERITAS cluster server 5, VERITAS NetBackup.