SUMMARY

• Solution - oriented, highly analytical and resourceful candidate with over 7 years of experiences in system administration and IT support.
• Better understanding of designing, building and supporting both development and production environments and supporting numerous applications.
• Experienced working across different financial, healthcare and service sectors.
• Expert at delivering technical assistances System Administrator for Red Hat Enterprise Linux, Sun Solaris, Ubuntu, SUSE LINUX, CentOS, IBM AIX and HP-UX servers
• Installed, configured and maintained UNIX/LINUX servers in an enterprise environment (Linux, AIX, Solaris, HP-UX) with SAN/NAS infrastructure across multiple sites for business critical applications.
• Installed, configured, and upgraded Red Hat Enterprise Linux 4.x, 5.x, 6.x on HP Proliant, Dell PowerEdge Servers and Solaris 9 & 10 on Sun Servers.
• Experience in Servers consolidation and virtualization using VMware virtual infrastructure, VMware ESX, VMware Vcenter and XEN virtualization.
• Installed, configured and maintained VERITAS Volume Manager (VxVM), Sun volume infrastructure, Logical Volume Manager.
• Experienced in using VERITAS Netbackup 6.5 with proficiency in System Backup and Recovery from tapes using Ufsdump, Ufsrestore, tar, and cpio.
• Expert in Shell, Perl scripting and experienced in using text-processing tools like Grep/Sed/Awk.
• Installed and configured network based services such as NIS, NFS, DHCP, DNS, FTP, SFTP, SSH. RSH, Samba & Send mail.
• Installed, maintained, upgraded and supported Apache Web Server and JBoss application servers on Red Hat Linux systems.
• Expert in Kickstart, NIM, Jumpstart, Ignite, AutoYast installation methods.
• Supported different tools for automation like configuration and management software puppet, scheduling software BMC, Maestro and monitoring software like Nagios & Splunk.
• Experience in automating jobs using Shell & Perl scripts.
• Extensive experience in writing and troubleshooting scripts in ksh, bash & perl languages.
• Strong knowledge of RAID groups and setting up NFS, CIFS, & iSCI protocols in SANS/NAS environment on HPUX 11.23/11.31 & Red Hat Linux.
• Setting up NIS/NFS on Red Hat servers, setting up JBOSS cluster & Oracle 10g cluster, configuring load balancing on Apache, Red hat Linux 4.0/5.0.
• Installing and configuring for Oracle, Sybase, SQL Server, Informix Databases.
• Experience in configuration of LPAR using HMC and installed the OS using NIM server.
• Expertise in implementation and designing of Disaster Backup and Recovery Plan.
• Experienced in working with SAN hardware from vendors including Netapp, EMC (Symmetrix and CLARiiON).
• Experienced in working with different teams such as Network Engineering, Database team & Application teams to resolve the issues and provide customer satisfaction.
• Efficient in installing, configuring and implementing the RAID technologies using various tools like Veritas Volume Manager and Logical Volume Manager.
• Expert in installing, configuring and maintaining Apache Tomcat, Lplanet, WebSphere Application servers.
• Applied ILO/IMM/LOM/DRAC for remote access of servers on Linux/Solaris respectively.
• Setting up and implementing configuration of Backup/Restore solutions for Disaster/Business Recovery of clients using OMNIBACK on Unix and Linux platform.
• Expert in configuring and troubleshooting TCP/IP network services.

TECHNICAL SKILLS

Operating Systems: Solaris (8/9/10/11), SPARC/x86, Red Hat Linux ES 3/4/5/6, SUSE Linux 8/9/10/11, Windows 95/NT4.0/Vista/ 2000/2003/2008 , HP-UX 11i v1 & v3.

Hardware Security: Sun E250, Sun Fire 6800, 4800, 10K, Sun Fire V240, V440, V890, V880, T2000, T5240, T3K, T4, M3000, M4000, M5000, HP Proliant DL350, 480 G4, G5, G6 & G7, HP C6000 & C7000, Confidential UCS, Firewall, TCP/IP Wrapper, SSH SeOS, SCP.

Tools: Veritas Cluster Server (v4.x) VCS, Veritas Volume Manager (v4.x, 5.x) VXVM, Solaris Volume Manager, Nagios, Veritas File Systems VXFS (v4.x, 5.x) Admintool, Remote Admin, Solstice Disk Suite, Veritas NetBackup 5.x, 6.x, VMware, LVM, Cognos.

Networking File systems: ZFS, VxFs, SVM, ext2, ext3, ext4, UFS, NIS, NIS+, DNS, NFS, RPM, YUM, LDAP and Auto FS, LAN, WAN, Firewalls, HTTP Server, BGP, OSPF, CDN

Scripting: Bash, Perl, KSH, Shell

RDBMS: Oracle 8i, 9i, PL/SQL

Programming: C, C++, Java, Perl, Shell

Virtualization: VMware, Zones, LDOM, Oracle VM & Containers

Protocol: TCP/IP, IPX/SPX, FTP, HTTP, ARP, RARP, UDP, Telnet, and Routing Protocols.

PROFESSIONAL EXPERIENCE

Confidential, San Francisco

Linux Administrator

Responsibilities:

• Installation and administration of Red Hat 6.2/6.3/6.4, Suse 11.1, AIX V7.1 Solaris 11.
• Managing Unix Infrastructure, involving maintenance of the servers and troubleshooting problems in the environment.
• Planning and implementation the configuration changes to the servers adhering with ITIL change management process.
• Installation, configuration of new Red Hat AS4, Solaris 10, (Jumpstart/Kickstart Installations) for different projects.
• Installation and update of software packages using RPM & Yum.
• Writing Bash/Shell/Perl scripts for managing day-to-day transactions & for automation of routine tasks.
• Served as subject matter expert for different business accounts running Unix AIX or HP-UX operating systems.
• Adding packages & patches for Solaris and Red Hat servers based on the requirements.
• Worked with Virtualization Technologies: VMware & XEN.
• Monitored and tested alerts in Nagios monitoring software.
• Worked on EMC DMX3000, Symm8830 Disk Libraries, Clariion CX 700 SAN.
• Monitoring the system activity, performance, and resource utilization.
• Daily Linux troubleshooting related to issues with LDAP, Apache, DNS and Q-mail platform.
• Supported Unix/Linux servers running Oracle and MySQL databases.
• Responsible for maintaining RAID-Groups, LUN Assignments as per agreed design documents.
• Performed all system administration tasks like cron jobs, installing packages, and patches.
• Configured and administered Apache Web and VSFTPD services.
• Build and configuration of new servers for different application development projects.
• Testing and upgrading production, development and test Linux and Solaris servers.
• Configuration of DHCP, DNS, NFS and Automounter.
• Creating, troubleshooting and mounting NFS File systems on different OS platforms.
• Installation/Maintenance of Hardware/Software in Production, Development & Test Environment as an integral part of the UNIX RHEL/ SOLARIS/HP-UX/AIX support team.
• Installed/configured/maintained/administrated the network servers DNS, NIS, NFS, Sendmail and application server Apache, Websphere, JBOSS, Weblogic, Oracle E-business suite and Samba on Linux.
• Involved in adding new disks, formatting, partitioning, disk space allocation, monitoring system performance, system tuning, and server hardening and crash recovery issues.
• Involved in installation/configuration of multiple instances of IBM HTTP server and configured F5 load balancers on Linux.
• Implemented virtualization using VMware ESX server in Linux on HP-460C Blade, Dell-2950.
• Responsible for installation, configuration, maintenance, deployments, update ears, monitoring, performance tuning, JVM load/stress testing of Websphere app server 6.1 on AIX.
• Performed troubleshooting on Java applications using WAS Logs, Traces, and Log Analyzer, Resource Analyzer/Tivoli performance viewer in production environment.
• Implemented security in systems and network for all Sun Enterprise Servers & Desktop servers.
• Installed and configured Solaris 10 servers with zones and containers on SUN M5000 & T2000 servers with SUN ZFS.
• Implemented SUDO, SSH, and other security tools and implements SOX (Sarbanes Oxley) security compliance.
• Package management like installing, removing and updating and querying packages using RPM tool.
• Maintained load balancing, high availability, failover functionality and disaster recovery included changing IP address of the web and app server machines that caused change in the virtual host and http transport configurations and performed autpsys schedulers.
• Monitoring of space availability on each file system using the Bash/Shell/Perl Scripts.

Environment: Solaris 10, Red Hat AS4, AIX, HP-UX, VMware, VMware ESX server, XEN, Nagios, EMC DMX3000, Symm8830, Clariion CX700 SAN, SUN (M5000 & T2000) servers, LDAP, DNS, DHCP, NFS, NIS, SSH, Automounter, Apache, Websphere, JBOSS, Webogic, Oracle E-Business suite, Samba

Confidential, Dallas, TX

Unix Administrator

Responsibilities:

• Installation and administration of RHEL 5.0/6.0 and SUSE 10.x.
• Configured kickstart server and updating/applying patches to the servers using Red Hat satellite server.
• Remote system administration using tools like SSH.
• Planning and implementing system upgrades including hardware, operating system and periodical patch, upgrades.
• Automation of jobs through crontab and autosys.
• Installation of packages, patch management, volume management on Suse servers using YaST.
• Applied appropriate support packages/patches to maintain system integrity.
• Performed capacity analysis, monitored and controlled disk space usage on systems.
• Monitored system activities and fine tuned system parameters and configurations to optimize performance and ensure security of systems.
• Adding servers to domain and managing the groups and user in AD, installing and configuring sendmail.
• Responsible for maintenance of development tools and utilities and to maintain Shell, Perl automation scripts.
• Expertise in VMware vSphere 3/4/5 version ESXi and vCenter operations management.
• Worked with project manager and auditing teams to implement PCI compliance.
• Integrating Weblogic 10.x and Apache 2.x and deploying EAR, WAR files in weblogic application servers.
• Installed, configured, cloned VMs on VMware 5, Vsphere 4.0, configured ESX hosts, adding datastores to ESX hosts.
• Designing firewall rules for new servers to enable communication with application, Oracle 10g servers.
• Working on volume management, disk management, and software RAID solutions using VERITAS (Volume Manager & Solaris Volume Manager). File system tuning and growing using VERITAS File System (VxFS), coordinated with SAN team for storage allocation and Disk Dynamic Multi Path.
• Fine tuning of servers and configuring networks for optimum performance.
• Organized various meetings with teams as mentioned above for tracking their requirements as inputs to get this done and designed the plan/steps involved and took user approvals.
• Installing, maintenance and administration of Oracle and DB2 server on Sun Servers.
• Setup user and group login ID’s printing parameters, network configuration, password, resolving permissions issues, users and group quota.
• As a member of the team, monitored the VERITAS Cluster Server 4.1 in SAN environment.
• Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring,
• Created new groups and tested first in developments, QA Boxes and then implemented the same in production boxes.

Environment: UN Servers (6500, 4500, 420, Ultra 2 Servers), Solaris, Red Hat 5.X, 6.X, VERITAS NetBackup, VERITAS Volume Manager, Samba, NFS, NIS, LVM, Linux, Shell Programming.

Confidential, Bentonville, AR

Linux Systems Administrator

Responsibilities:

• Supported around 2000+ Linux servers running on Red Hat Linux ES 4/5/6.
• Built Linux compute nodes using automated scripts (Kickstart Scripts) and NFS server.
• Supported servers running on HP x86 and Oracle SPARC servers like T2000, M5000 and M400 servers.
• Experience decommissioning RHEL servers connected to EMC SAN.
• Worked on Shell and Perl scripting to automate the tasks in Linux.
• Performed SAN migration activities at host level using LVM mirroring and Open Migrator.
• Work with software engineers, Oracle DBA’s and customer service personnel to resolve issues and keep our environments operating smoothly.
• Linux deployment, administration, performance tuning, monitoring and account management.
• Provide 24x7 production environment monitoring and support.
• Manage and maintain existing computer systems hardware into the existing environment to meet customer requirements.
• Perform RHEL 5.4 installation using Kickstart methodologies.
• Implement High Availability using VCS 5.1.
• Monitor and maintain normal system administration including the review of system logs, optimization tuning, patch control, and antivirus DAT deployment.
• Implement and maintain ESX host clusters and security.
• Create scripts as necessary to automate routine processes.
• Provided cross platform data access from Linux to Windows users by deploying Samba.
• Managed users on Unix/Linux and Window systems.

Environment: HP x86, Oracle SPARC (T2000, M5000 and M400 servers), Red Hat Linux ES 5/6, Kickstart, NFS, Shell & Perl, LVM, Open Migrator, Samba, Das Storage, VCS 5.1, Win 2008 HPC Cluster Manager Tool.

Confidential, Stamford, CT

Systems Administrator

Responsibilities:

• Installation, configuration, upgrade and administration of, Red Hat Linux, AIX, SUSE, Solaris.
• User account management and support.
• Jumpstart and Kickstart OS integration, DNS, DHCP, SMTP, Samba, NFS, FTP, TFTP, SNMP, SSH, LDAP integration.
• Network traffic control, IPSec, Quos, VLAN, Proxy, Radius integration on Confidential hardware via Red Hat Linux software.
• Managed disk applying LVM, resized disk space if needed.
• Installation of software packages using RPM & Yum.
• Configuration and Administration of NIS environment.
• Managing file systems and disk management using Solstice Diskquite.
• Involved in Installing and configuring of NFS.
• Package and patch management on Sun servers.
• Kernel tuning, writing Bash/Shell scripts for system maintenance and file management.
• Trouble shooting the system and end users issues.
• Responsible for reviewing all open tickets, resolve and close any existing tickets.
• Document solutions for any issues that have not been discovered previously.

Environment: Sun Solaris 2.6/7, SUN Ultra Enterprise 6000/450, SUN Ultra 10/5/2/1, Windows NT 4.0, RHEL 3.x.

Confidential, Reston, VA

Responsibilities:

• Administered Linux clusters consisting of 128 nodes running both on Red Hat and SuSE.
• Perform configuration of standard Linux and network protocols, such as SMTP, DHCP, LDAP, DNS, NFS, SMTP, HTTP, SNMP and others.
• Build, maintain and troubleshoot high availability clusters using VERITAS Cluster Server (VCS).
• Added new nodes to the cluster, updated the nodes with patches from RHN Clusters.
• Created puppet manifest maintain customer application data schedule users to perform high performance computing activities on the Linux cluster.
• Managed software licenses using Flexim.
• Installed and configured Nagios monitoring tool to manage infrastructure.
• Applied patches for Oracle database servers.
• Installed Red Hat 5, VERITAS Cluster Server and VERITAS Volume Manager.
• Performed Kernel tuning and Kernel patching.
• Monitored system performance, tuned and optimized systems for better performance.
• Managed disk using LVM, resized disk space when required, managed disk space from NetApp filers.
• Setup NTP server and synchronized clients with NTP server.
• Troubleshoot application problems by diagnosing issues.
• Provided 24/7-support coverage, pager support and weekend support.

Environment: Redhat 5.X, VCS,Nagios,LVM, Veritas Volume Manager, Solaris, Net App.