SUMMARY

• 7+ years of experience as System administrator on RHEL 4.x, 5.x, 6.x, Debian, CentOS4.x, 5.x, Suse 9 & 10, Oracle Enterprise Linux 5 & 6, Solaris 8,9, 10, Windows 2003, 2008 R2, 2012, and VMware vSphere ESX/ESXi 4.x, 5.x environment.
• Hands on Experience in Redhat Enterprise Linux and Kickstart - PXE installation.
• Extensive experience wif Virtualization technologies like installing, configuring, administering
• Well experienced in Installation, administration, patches, up-gradation, configuration, security issues, performance tuning and troubleshooting of Red HatLinux4/5/6, Sun Solaris 8/9/10 IBM AIX 5/6, Suse EL and Window.
• Proficient in Installation, configuration, maintenance of open LDAP server and application integrated wif apache/tomcat, samba & send mail, 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.
• Expert in Kickstart, Jumpstart, and Ignite Installation Methods.
• Provide recommendations for newLinuxserver 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.
• Experience in Creation and managing user accounts, security, rights, disk space and process monitoring on Redhat Linux.
• Installation and configuration of Web Application servers like Apache, Tomcat and Weblogic.
• Experience in configuring Oracle ASM disks and supporting Oracle RAC (Real Application Cluster) Database.
• Working knowledge on Automatic Storage Management (ASM), AWS and experience in Shell scripting (Ksh/Csh/bash/Sed/Awk), Python, Ruby, Java and Perl scripting.
• Experience wif configuration management and automation software such as Puppet and Ansible.
• Managed Patches, Upgrades and Licensed Products for System software on allLinuxServers.
• Experience in iSCSI, NFS storage and RAID concept.
• Experience working wif Cisco Nexus 2148 Fabric Extender and Nexus 5000 series to provide a Flexible Access Solution for a datacenter access architecture.
• Experiences in FTP, DHCP, SAMBA, users’ setup/troubleshooting.
• Experience managing various file system using LVM configured file system through network using NFS, NAS methodologies and installed RAID devices.
• Experience in Server monitoring, application monitoring wif teh halp of HP insight, Nagios, Zabbix.
• Experienced in creating, mounting file systems and recovering file system errors.
• Good knowledge of installation and update of drivers for HBAs to provide connection between servers & clients.
• Responsible for Backup and Recovery operations of various servers using VERITAS Net Backup.
• Advance Scripting skills in Bash Shell.
• Working Knowledge on using and developing Perl and python scripts used to automate day-to-day administrative tasks.
• Experience on Installation of VMware ESX, ESXI migration of vm's from one host to another host and also from one data storage to another data storage, Patch management.
• Strong experience wif theVMwareHA (High Availability), Distributed Resource Scheduler (DRS), vCloud, andVMwareDistributed Power Management (DPM),VMware Data recovery and Site Recovery Manager along wif configuration of Fault Tolerance (FT) for business critical servers.
• Configured, deployed and actively involved in troubleshooting of VMs, ESX/ESXi servers, vCenter server, and vSphere as well as Monitoring and managing performance of vSphere, ESXi servers and Virtual Machines.
• Extensive experience in VMs O/S installation, setting up VM priorities, Cloning, Creating Templates and Snapshots.
• Proficient in Configuring of DNS, DHCP and Active Directory Services in Windows based server environments
• Configured scheduled tasks, alarms and alerts, CPU, Memory and Network Disk monitoring in vCenter.
• Experience in wif Virtualization technologies like installing, configuring,VMwarevSphere. Creation, management, administration and maintenance of virtual servers and clients.
• Extensive knowledge in advance features like VMOTION, SVMOTION, HA and DRS.
• Experience inP2V, V2V MIGRATION usingVMwareConverter / Plate Spin. Creating host and client VM templates and cloning.

• TECHNICAL SKILLS

  Operating Systems: Redhat 4/5/6, AIX, VMware 4/5, Solaris 8/ 9/10, Windows 2003, 2008 R2, 2012.

  Hardware: HP ProLiant, Cisco UCS, Dell Power edge, IBM x series, Sun Sparc

  Languages: C, C++, FORTRAN and Pascal

  Database: Oracle 9i, 10g, 11g DB2, MS Access, MYSQL 3.X

  Web Applications: HTML, PHP

  Scripting: Perl Scripting, Shell Scripting on Linux and Solaris

  Networking: TCP/IP, NFS, FTP, DNS, DHCP, if config, route, HTTP, SAMBA

  Web/APP Servers: Apache Web Server, Tomcat Web Server, Websphere

  Tools: VMWare, IBM-RSA

  PROFESSIONAL EXPERIENCE

  Confidential, Bentonville,

• ARLinux/VMware Administrator

Responsibilities:

• Monitored and administered Servers for day-to-day problems, patches, user administration, hardware failure, monitoring log files, backup, software patching, configuration changes and documentation.
• Installed, upgraded, patched and configured Linux servers using Jumpstart and Redhat Enterprise Linux 5/6 using Kickstart.
• Configured, maintained, applied changes and fail-over schedules of HA servers running Veritas Cluster Server and Redhat Cluster Server.
• Experience in establishing NIC bonding/ teaming, IP aliasing.
• Installed, monitored and supported Web servers and Application Servers on Solaris and Linux environments.
• Administer teh Network issues and Resolving Operating Systems related issues of AIX, Linux and making sure dat teh users get teh proper environment for testing.
• Fine tuning of Operating System and performance analysis,uptime and response time and SLA.Performed UNIX System Administration. Fine-tuning, Kernel debugging, process scheduling, disk and file system
• me/O, kernel internals, TCP/IP communications.
• Automating teh installs using Jumpstart and Kickstart and building post install scripts using Shell scripting in SUN Solaris and RHEL Servers.
• Worked extensively wif Vendors Sun, NetApp, and HP for troubleshooting teh issues and in replacing teh failed Hardware.
• Implemented RAID techniques and teh creation of Disk groups and volumes, plexes using Veritas Volume Manager 5.0.
• Created sudo access to users on Linux and Solaris servers.
• Updating YUM Repository and Redhat Package Manager (RPM).
• Installed and configured services like DHCP, NFS, DNS, Apache Web Server, NIS, LDAP, FTP/SFTP, SMTP, Telnet, RPM Package Management, File System Management.
• Configuring OSPF wif multiple areas and troubleshooting issues
• Maintaining EIGRP Autonomous Systems and configuring un-equal load balancing
• Configuring switches for different VLANs, Trunking, and troubleshooting switchingIssues.
• Configure Cisco routers 2500, 2600, 3600, and Cisco switches Catalyst 2900, 3500 Site to Site VPN wif ASA5510 firewalls.
• Address and Network Management (network and sub-netting address)
• Router's Password recovery.
• Address and Network Management (network and sub-netting address).
• Involved in Layer 1-3 Network Architecture for Lab Network.
• Configured Nagios to monitor teh resources on teh server farm and support them on a 24x7 basis.
• Creating account for new users and deleting accounts for teh expired users.
• Duties included Installation, configuration, administration, troubleshooting and maintenance ofVMwarevirtual infrastructure platforms
• ManagedVMwareinfrastructure wif Virtual Center Server and migration of virtual machines to ESXi 5.5
• Worked on Implementing, upgrading and maintaining teh Cisco UCS domains, vCloud.
• Created and maintainedVMwarehost clusters for High Availability (HA), Distributed Resource Scheduling (DRS) and Distributed Power Management (DPM).
• Configured Affinity, Anti-Affinity rules for Virtual Machines in teh Cluster including configuration and troubleshooting of vMotion and Storage vMotion issues.
• Involved in teh installation and configuration ofVMwareSyslog Collector for ESXi servers for centralized log management
• Installed & configured Guest operating system like Redhat on Vmware ESX 5.x.
• Involved wif teh deployment teams in trouble shooting and fixing day-to-day problems of teh applications inproduction on 24/7 schedule.

Confidential, Houston, TX

System Administrator

Environment: SUN Solaris 8/9/10, RHEL 5.x/6.x, VMware ESX5.x, Apache 2.2.x, SuSE EL 9/10, WebLogic 10/11g, WebLogic 8.x/9.x, SunFire T1000, T2000, Sun M9000, M5000, M3000, Sun X3-2, X3-4, HP C Blade System, BL460c, BL420c EMC, Veritas Storage Foundation 5, Veritas Cluster Server 5.1, VMware.

Responsibilities:

• Experienced as Red Hat Enterprise Linux administrator.
• Building, Installing, Configuring servers from scratch wif OS of RedHatLinux.
• Performed Red Hat Linux Kickstart installations on RedHat 4.x/5.x, performed Red Hat Linux Kernel Tuning, memory upgrades.
• Working wif Logical Volume Manager and creating of volume groups/logical performed Red Hat Linux Kernel Tuning.
• Storage Provisioning, Volume and Filesystem Management using LVM, Veritas Volume Manager and Veritas Filesystem (Veritas Storage Foundation), Configuring ZFS file systems.
• System Data and Process Architect for Service-Now Deployment.
• Implementation of oracle RAC 10g on HPUX blades and Itanium servers wif Redhat linux RHEL 5.x/6.x along wif SAN storage on EVAs. Also implemented and support HPUX Service guard on Linux servers.
• Setting up JBoss cluster and configuring apache wif Jboss on Ret Hat Linux. Proxy serving wif Apache.
• Troubleshooting Apache wif JBoss and Mod jk troubleshooting for teh clients.
• Installation and configuration of Apache Webserver in a LAMP stack.
• Monitoring connections and load of Apache server using mod status.
• Troubleshoot customer applications issue.
• Configuring DNS, DHCP, NIS, NFS and other Network Services in IBM Power Series.
• Troubleshoot OS issue using system message logs.
• Install packages using RPM.
• Created KSH/Bash scripts to monitor processes and making sure process startup when operating system restarts using chkconfig and RC startup levels.
• Manage user/group and sudo access on teh Linux operating system.
• Setup log rotate for applications logs and system logs.
• Address and Network Management (network and sub-netting address)
• Support LANs, WANs, network segments, Internet, and intranet systems.
• Setting up teh lab environment wif Tomcat/Apache, configuring teh setup wif F5 virtual load balancer for customer application.
• Responsible for maintaining around 65VMwareESXi 5 Hosts & 700+ guest virtual machines (VMs) in Data Center
• Installed and configured vCenter Servers and also configured Clusters and resource pools for CaaS (Computing as a Service), vCloud.
• Configured Clusters for teh ESXi hosts and created Affinity/Anti-Affinity rules in teh DRS to either keep teh VMs together or separate them on ESXi hosts.
• Duties included monitoring and managing performance of ESXi servers and VMs using Virtual center server for HA, DRS, installing and configuring Cisco UCS Manager.
• Involved in live migration of VMs and data files using teh vMotion and Storage vMotion
• Took active part in troubleshooting vCenter and ESXi issues and also in system hardware failures
• Maintained user access inVMwarevirtual Center, and configured mail alerts for any failure in HA, DRS, CPU and memory.
• Worked on troubleshooting teh triggered alarms generated fromVmware vCenter Server and solved teh SNMP traps
• Used Hot Plug feature for increasing teh performances of virtual machine.

Confidential, Emeryville, CA

Linux/VMware System Administrator

Environment: Red Hat Linux 4/5/6, VMware 4/5, Solaris 8/9, Sun Enterprise Servers, SUN FIRE 6800/E6500/E4500, IBM RS/6000, Disk Suite, Veritas Volume Manager 4.0, LDAP, DNS, NIS, SNMP, Shell scripting, SENDMAIL, Apache, WebSphere, Sun and Veritas Clusters.

Responsibilities:

• Installation, Configuration and upgrade of Redhat Linux (3,4,5), Cent OS, SUSE, AIX, HP-UX & Windows 2000 / 2003/2008 R2 Operating System.
• User Administration, management and archiving.
• Experience in Configuring and Managing Virtual Disks, Disk Mirrors & RAID Levels.
• Experience wif VMware Virtualization using ESX hypervisor of Vsphere 4.0.
• Installation, Configuration and Maintenance of Samba, Apache Tomcat and Web Sphere in AIX, and Linux environment.
• Experience in Active directory configurations and support.
• Installed IPlanet web server on Linux and Solaris boxes.
• Implemented and administered VMware ESX 3.5, 4.x for running teh Windows, Redhat Linux Servers on development and test servers.
• Administration and troubleshoot skills on Disks & File Systems forLinuxsystems.
• Written various Linux shell scripts for example- apps init scripts, periodic backup scripts of Perforce depot, xterm tittle pointing to host alias names while login in.
• Installation/Administration of TCP/IP, NIS/NIS+, NFS, DNS, NTP, Auto mounts, Send mail and Print servers as per teh client’s requirement.
• Expertise in Performance Monitoring and Performance Tuning.
• Expertise in creating and managing Logical Volume Manager in AIX, HP-UX and Redhat Linux.
• Experience in building Production Servers and validation for new build releases.
• Security, users and groups administration.
• Disk and file system management through Veritas Volume Manager / Veritas File System.
• Troubleshooting vSphere ESX/ESXi, ESXi Clusters, Host Profiles, vDistributed Switches, HA, DRS, vMotion, Storage vMotion, Fault Tolerance, Resource pools, vCenter Permissions, Snapshots, Templates, snapshots, Disaster Recovery (DR) and High Availability (HA) using PowerCLI and Remote CLI
• Installed and Configured WIN, TCP/IP, DNS, DHCP, IIS and Terminal Services.
• Configured and maintained new VM’s and Installed Microsoft Windows 2008 R2/2003 Servers, managing VM’s.
• Experience in setting a cluster environment for load balancing and HA
• Networking setup wif teh port group and VLAN trunking on teh ESXi server and Physical switches
• Resolve tickets and provide root cause analysis to management.

Confidential, Manhattan, NY

Linux/VMware Administrator

Environment: Redhat (4,5), Cent OS and SUSE Linux, Solaris 8 / 9, Cisco Nekus 5k, 7k, MDS, Firewalls.Sun Enterprise Server, HP 9000 K, L, IBM RS/6000, p Series Server, Net Backup 5.0, Veritas Volume Manager 4.x, EMC DMC 2000/ 3000, Windows NT 2003/2000/ XP,

Responsibilities:

• Build and support cluster infrastructure (Sun Cluster 3.x, Veritas cluster, Linux RAC cluster
• Provided Administrative support for about 225 Solaris/Linux servers running Web logic, Web sphere Suites, Apache Web Server and Multimedia Messaging applications.
• Installation, Configuration and Maintenance of Redhat Operating System wif Veritas Volume Manager and Veritas Cluster Server.
• Trouble shooting teh OS related Issues.
• Created new file systems whenever required.
• Installed and configured JUMP START Server.
• Performed tasks such as User, group management, adding, removing disks and creating file systems as requested on UNIX/WINDOWS Servers.
• Extensive working experience in process scheduling, disk and file system me/O, kernel tuning, TCP/IP networking.
• Installing Veritas Volume Manager and configuring Disk Groups, Volume Groups and Logical volumes to manage teh storage resources.
• Installing ESXi on Cisco UCS blades and C200 racks, using scripted installations, configuring and hardening ESXi servers
• Responsible for handling teh vCenter operations like HA, DRS, vMotion, Storage vMotion, VM templates and maintaining teh resource pools.
• Upgraded teh ESXi/ESX Hosts, vCenter, VMs using Update Manager.
• Involved in storage migrations and replications on EMC storage arrays
• Responsible for full automation, migration and failover wif vCenter site recovery manager 4
• Troubleshooting Windows 2003/2008 and ESX/ESXi Servers.
• Involved in planning and implementation of NAS backup for servers.
• Day to Day activities included handling security issues like stale UNIX account cleanups, 90-day password changes, setting max age and min age, creating a list of umask permission for various users.
• Involvement wif teh Deployment teams in trouble shooting and fixing day-to-day problems of teh applications in production on 24 x 7 schedules.
• Configured and maintained FTP, DNS, NFS and DHCP servers.
• Ensured teh data redundancy wif RAID implementation.
• Responsible for teh configuration of DHCP server and Samba server.
• Responsible for DNS server management, user disk quota management, Projects, Quotas management.

Confidential, Chesapeake, VA

System Administrator (Linux, VMware, Windows)

Environment: Redhat Linux, Web Sphere, Virtual Box, RedHat Virtualization (XEN), Solaris 8/9, Apache Tomcat and Jboss, Oracle Cluster, Cisco Nexus 3k, 5k.

Responsibilities:

• Installation, configuration and administration of Red Hat Linux servers and support for Servers.
• Installation, maintenance and regular upgrades of Red Hat Linux Servers using kickstart based network installation
• Managing Compaq and Linux workstations and servers.
• Installation of patches and other software packages.
• Responsible for network analysis, configuration management and develops improvements for system software performance, availability and reliability.
• Monitoring system performance, adding /removing /administering hosts, users, disks on DNS / NIS domain.
• Configuration of Hardware and Software RAID on Digital & Sun Servers
• Creating and modifying application related objects, Creating Profiles, Users, Roles and maintaining system security.
• Implemented traffic filters using Standard and Extended access-lists.
• Designed and implemented an IP addressing scheme wif subnets for different departments.
• Implemented and monitored teh network using network sniffing and scanning tool as Wireshark.
• Wrote bash shell scripts for getting information about various Linux servers.
• Administering NFS Mounts.
• Troubleshooting Backup and Restore Problems Creation of LVMs using Linux utilities.
• Monitored overall system performance, performed user management, system updates and disk & storage management.
• Performed OS upgrades and Patch loading as and when required.
• Backing up and restoring files across teh network.

Environment: Redhat Linux, Sun Solaris, Suse Linux, AIX, SAN, Samba, NFS, VMware ESX and VMware server, Apache, Tomcat and Jboss, Networking, DNS, DHCP, Oracle Cluster, Web sphere servers.