SUMMARY

• 7+ years of system administrator experience in multiplatform Linux, VMware ESX and Windows environments, wif hands - on expertise in networking, storage, scripting, and systems integration.
• Well experienced in Installation, administration, patches, up-gradation, configuration, security issues, performance tuning and troubleshooting of Red Hat Linux 4/5/6, Sun Solaris 8/9/10 IBM AIX 5/6, SuSe EL 7/8/9/10 and Window 2000/2003/2008.
• Expert in Kickstart, Jumpstart, and Ignite Installation Methods.
• Proficient in Installation, configuration, maintenance of open LDAP server and application integrated wif apache/tomcat, samba & sendmail, web sphere application servers and postfix mail server for user autantication.
• Experience wif server/kernel performance tuning, system security, system monitoring and system network interface load balancing.
• Expertise in system monitoring and software installation tools including Nagios, RPM, yum, apt-get, YaST, and autoYaST.
• Provide recommendations for new Linux server deployments in a datacenter environment.
• Setup Internet load balancing on Multiple ISP, Firewall, Port forwarding, IP routing using IPTABLES
• Experienced in supporting database systems including Oracle, MySQL on Linux/Unix, and Windows environment.
• Strong knowledge of system performance and monitoring tools.
• Experience in RPM build package, Kernel update & remote network installation
• Routine maintenance wif latest Security updates and software update.
• Expertise in Installation, Configuration & Troubleshooting VMware ESX 3.5/4.0/4.1/5.0/5.1 , VSphere 4.0/5.0, Virtual Center 5.0 Servers.
• Installing and upgrading VMware tools on client machines.
• Creation of VM’s on ESX Servers and installation of hosts and guest OS Windows. Network configuration on ESX servers, which include NIC teaming, Bonding for Failover and Load Balancing purposes.
• Migrating Virtual Machines across various VMware products like ESX servers Workstation and VMware servers.
• Installation of Intel and/or AMD based HP, Dell, IBM standalone and blade servers, and knowledge on the hardware.
• Experience in Windows 2000/2003/2008 Active Directory Installation, Managing, Administering and Troubleshooting. Design and deployment of enterprise-wide Group Policies using Active Directory components, Creation of users, groups and assigning necessary hardware and software.
• Experience in P2V, V2V MIGRATION using VMware Converter. Creating host and client VM templates and cloning.
• Experience in FC, iSCSI SAN, NAS, NFS storage and RAID concept
• Configure networking in Linux servers.
• Remote system administration experience.
• Proficient in hardware, software and networks troubleshooting and problem determination/resolution.
• Excellent technical skills, wif strong knowledge of current and emerging technologies.
• Experience wif system and storage sizing, capacity planning, system tuning and system integration.

TECHNICAL SKILLS

Operating Systems: LINUX - Red Hat 4,5,6,7 Fedora, SUSE 9,10,11, Debian, Ubuntu, CentOS UNIX - IBM-AIX, Sun Solaris 7, 8, 9&10 and HP-UX 10.20, 11.x WINDOWS - NT/ 2000/2003/2008/2012 Server/XP Pro/Vista/7

Hardware: HP ProLiant, G6/7/8/9 C, IBM x236 IBM x232, IBM 3650, IBM HS22, HS12, LS22 Blade Center, SunT2000, T5240, T5120, V880/890,E6500, E4500/ E3500, E450/ Netra1405/X1, T1000/2000,T5120/5220, M4000, B6000

Virtualization: VMware vSphere 4.0/5.0, ESX 3.5/4.0/4.1/5.0 Server, Virtual Center Server 2.5, VMFS Data store, VMware HA, VMware DRS, VMware V Motion, VMware Workstation 6 and up, VM Update Manager.

Tools: WebLogic, WebSphere, Apache HTTP/Tomcat/JBoss, VERITAS Volume Manager, Netscape/iPlanet Server, VERITAS Net backup, TSM, Cluster server, Sun Cluster, Nagios, Chef, Puppet

Languages: Scripting Shell, Bash, Perl, JSON, XML JAVA, SQL, HTML

Network Protocols: TCP/IP, NIS, NFS, DNS, DHCP, LAN, FTP/TFTP, SSH, SFTP, SNTP, SMTP, ARP, RARP, PPP, POP3 and Firewalls

PROFESSIONAL EXPERIENCE

Senior Linux Administrator

Confidential, Dublin, CA

Responsibilities:

• Installed Linux operating systems, apply patches, manage file systems and monitor performance on VM, and DELL server.
• Installed and Configured DNS, DHCP, FTP, TFTP, NIS, and NFS in Red Hat Linux.
• Build kickstart server and Implement automation of server provisioning via PXE boot and Kickstart.
• Creating, cloning Linux Virtual Machines, templates using VMware Virtual Client 4.0 and migrating servers between ESX hosts.
• Configured and administrate TCP/IP networking, routing, switching load balancing and VLAN
• Help Build and manage Opera private and public cloud environments.
• Assist in information gathering and architecting solutions to fulfill various functional and performance requirements, including storage, networking, and other pieces of infrastructure
• Manage HPCC cluster at enterprises scale.
• Managed and monitor system configurations wif OCS inventory.
• Responsible for AD integration for Red Hat and Centos servers.
• Production support of Apache and tomcat including installation, configuration, management, and troubleshooting.
• Responsible for proxy setup between Apache Server and Application Servers, Bonita and Tomcat.
• Responsible for operational support and incident management of Linux server.
• Responsible for Investigating and troubleshoot issues by determining root cause and remediate application, system, infrastructure issues and take proactive measures to prevent future occurrences.
• Worked wif teammates, clients and other teams to identify and address systems problems.
• Analyzed all aspects of the existing infrastructure and recommends modifications dat will enhance system reliability, availability, serviceability and scalability on Linux.
• Performed and Kernel Patching using both Command line and GUI.
• Performed Kernel Upgrades Kernel Tuning to make Linux environment less vulnerable to internal security fixes.

Environment: Red Hat Linux 5.x, 6.x, CentOS 5.x, 6.x, Ubuntu, SUSE, VMWARE, HP Blade servers, Kick start, Apache, Tomcat, DNS, DHCP, NFS, NIS, SAN, LDAP, Active Directory, MySQL, PHP, Samba.

Senior Linux Administrator

Confidential, Troy, MI

Responsibilities:

• Worked Primarily on RHEL 4/5/6, HPUX 11i and Solaris 8, 9 & 10 Operating Systems.
• Involved in migration activities using Red Hat LVM, Solaris LVM, Veritas and EMC Open Migrator.
• Installation of OAS (Oracle Application Server) on Solaris 9 and its configuration wif oracle database.
• Experienced wif Infra Performance and Optimization
• Migrated ORACLE RAC servers using system EMC Open migrator and TEMPeffectively worked wif the database team to bring up/down the databases.
• Writing Shell and Perl Scripting for automation of job.
• Tuning the kernel parameters based on the application/database requirement
• Used Veritas File system (VxFS) and Veritas Volume Manager (VxVM) to configure RAID 1 and RAID 5 Storage Systems on Sun Solaris.
• Experienced wif UNIX Virtualization, Server High Availability.
• File system tuning, growing, and shrinking wif Veritas File system 3.5/4.x.
• Troubleshooting hardware, software and configuration problems for various protocols and topologies.
• Configured open LDAP Red Hat Linux systems.
• Setup optimal RAID levels (fault tolerance) for protected data storage in NAS environments.
• Install and configure DHCP, DNS (BIND, MS), web (Apache, IIS), mail (SMTP IMAP and POP3) and file servers.
• Experienced wif Java Native Interface (JNI) programming framework to enabling the Java code running in a Java Virtual Machine.
• Created new slices, mounted new file systems and unmounted file systems, and experienced wif Fuse.
• Upgraded Solaris 9 to Solaris 10 and worked wif Solaris zones/containers/LDOMS, Used Solaris Cluster to deploy two-node cluster and used HPUX Cluster.
• Performed patching, backups on multiple environments of Solaris, Linux and VMware.
• Worked wif different Active directory databases like Microsoft AD, Tivoli Directory server wif LDAP.
• Other administration tasks handled are: Tuning the Operating System for optimum performance, Debugging system defects and crash dump analysis, Planning and Executing System and Network Upgrades
• Worked on making DNS entries to establish connection from server to DB2 database.
• Backup jobs, housekeeping, database, proprietary jobs using CRON, EMC legato Networker and BMC Control-M troubleshooting daily job problems.
• Assisted other UNIX administrators when halp was needed (me.e. creating UNIX accounts, writing scripts to perform system administrator functions, responding to trouble tickets, etc.).
• Involved in preparation of functional and system specifications. Estimated storage requirements for applications.

Environment: Red Hat Linux (RHEL4/ 5/6), Solaris 9/10, Logical Volume Manager, Sun & Veritas Cluster Server, Global File System, Red Hat Cluster Servers.

Linux Administrator

Confidential, Dallas, TX

Responsibilities:

• Installation and Configuration of Red Hat Linux 5/6, Solaris 10 operating systems on large distributed environment.
• Implemented remote installation on Red Hat Linux Kickstart and Solaris jumpstart/JET Servers.
• Installed and configured Red Hat softwares and 3rd Party tools using RPM’s and YUM on Red Hat servers.
• Involved in creating volumes on raid groups and aggregates and sharing to Windows and UNIX servers using CIFS & NFS.
• Experience in Troubleshooting Boot/GRUB issues and Performance Tuning.
• Worked on scripting using shell, bash and korn.
• Upgraded Red Hat Linux servers from 5.2 to 5.4 and AIX from 5.2 to 5.3.
• Involved In Migration from Solaris to Red Hat Linux.
• Implemented the SSL and TLS protocols by using OpenSSL
• System performance tuning, User administration and security.
• Scheduling Backups, Monitoring & taking failover test of Veritas Clustered servers.
• Monitoring of Tivoli storage logs for restarting any failed backups or trouble shooting any file permission or stale file handling problems.
• Ability to screen and diagnose client inquiries and problems, troubleshoot to clearly understand problems (root cause determination), solve problems, use operational documentation (runbooks)
• Responsible for administering and maintaining Red Hat Linux work stations running Apache web server, iPlanet and SUN ONE.
• Configured and Administered JBOSS 4.2 on Red Hat Linux and Solaris Cluster Nodes.
• Installed and Configured VMware ESX server and Installed Red Hat Linux servers on top of it.
• Provided ecommerce application support for Java/J2EE based ATG Dynamo and WebSphere environments.
• Worked in Data center environment for configuring new Hardware.

Environment: Red Hat Linux 5/6, AIX 4.3,5.1,5.2,5.3,Solaris 8/9/10, IBM Blade center Servers (HS20, HS21), IBM P570, p590, 595MQSeries 5.0

Linux Administrator

Confidential, Burlingame, CA

Responsibilities:

• Installed, configured, upgraded and Migrated UNIX and Linux Operating System.
• Configured Winbind on all Linux workstations, which enables all the Linux users to be autanticated on Microsoft Windows Active Directory Server.
• Monitor T1, ISDN, 56k Modem, Router connectivity and all main servers' activity on a continuous basis.
• Used RPMs to install, update, verify, query and erase packages from Linux Servers.
• Authorized Solaris users/groups to access various applications and troubleshot various user problems using management tools.
• Maintained maximum uptime and maximum performance capacity for Enterprise Production, QA, UAT/Staging.
• Incident management for Unix Servers (Solaris, Linux and AIX).
• Experienced Good knowledge onITIL framework
• AIX systems administration and Disk Management using SMIT
• Primary responsibility includes building and supporting Solaris/ Red Hat Linux servers.
• Extensive experience in installing, integrating, tuning, and troubleshooting Apache, Tomcat WebSphere and WebLogic application server.
• Experienced in knowledge about application release management.
• Installation and configuration Veritas Net Backup on Sun Severs and performing Backup using Veritas Net Backup.
• Suds administration and Red Hat Linux package administration.
• Involved in migration of projects from one flavor to another one.
• Worked on SAN using Tivoli Storage Manager in allocating file systems to the end users and for managing storage.
• Involved in development, user acceptance, and performance testing, production & disaster recovery server.
• Worked in Data center environment for racking servers and configuring new Hardware.
• Worked wif other IT teams, customers (users), and other managers in halping build and implement systems and standards.

Environment: IBM AIX 4.3.3, 5.1, 5.2, Solaris 8/9/10, Red Hat Linux 4/5, Sun Enterprise Servers, SUN FIRE 6800/E6500/E4500, Sun Sparc1000, IBM RS/6000, Disk Suite.

Systems Administrator

Confidential

Responsibilities:

• Installed and configured approximately 40+ servers wif Red Hat Linux operating System.
• Performed automated kickstart installations and RPM package management.
• Configured diskless workstations to boot from a network server running on Red Hat Linux.
• Created virtual machines using VMware and LVS.
• Provided 24x7 support, during production pushes and provided end user support.
• Tuned kernel parameters for optimal performance.
• Monitored CRON jobs dat were scheduled by the development team
• Set up user and group login ID's, printer parameters, network configuration, user passwords, resolving issues wif user permissions, user and group quota, resolving booting and login issues.
• Involved in writing shell scripts for monitoring system usage, backup and recovery, automation of jobs, adding new services to the system.
• Implemented RAID and the created disk groups and volumes using VERITAS Volume Manager.
• Installed SAMBA server for interface between Linux and NT Servers to share files and Network Printer.
• Configured protocols like NIS, NFS, DNS, POP3 and SMTP.
• Setup and configured ACL permissions, SUDO and user profiles on servers.
• Troubleshoot UNIX/Linux networks; resolve security related issues by using tools such as IP tables, firewall, TCP wrappers, NMAP.
• Implemented SSH for secure transfers and implemented PKI between servers to enable login between servers wifout password.
• Hands on VMware for installing Linux and SuSe Linux and windows on virtual machines.

Environment: Red Hat Linux, DNS, DHCP, NFS, SAMBA, Apache, SMTP, VMware, V block, HP blade servers.

Linux Systems Administrator

Confidential

Responsibilities:

• Configuration of LVM (Logical Volume Manager) to manage volume group, logical and physical partitions and importing new physical volumes.
• Configuration of RAID 0, 1,01,10,50 for backup and recovery.
• Updating Patches in the Systems as per the requirement.
• Responsible for supporting Sun servers for production, development and testing.
• Installing, Configuring and Maintaining the DHCP, DNS, NFS, NIS, send mail server.
• User Account Management, Group Account Management, configuring dumb terminals, adding modems, formatting and partitioning disks, manipulating swap, local and remote printer management, taking and restoring backup, scheduling jobs.
• Performance tuning and preventive maintenance. Performed daily backup.
• Performed installation and configuration of LDAP.
• Resolving TCP/IP network access problems for the clients. Implementing Remote System Monitoring wif Sun Microsystems.
• Develop, Maintain, update various scripts for services (start, stop, restart, recycle, cron jobs) Unix based shell.
• Experience wif OS upgrades and installation of third party software, packages and patches.
• Scheduling full and incremental backups using Net Backup on daily, weekly and monthly basis.
• Experience wif adding and configuring devices like Hard disks and Backup devices etc.
• Hands on VMware for installing Linux and SuSe Linux and windows on virtual machines.

Environment: Red Hat Linux, DNS, DHCP, NFS, SAMBA, Apache, SMTP.