SUMMARY:

• 7+ years of experience in System Administration support, design, implementation, maintenance, tuning and troubleshooting of the servers running on IBM AIX 5.1/ 5.2/5.3/6.1/7.1, Red hat Linux /CentOS 4.x/5.x/6.x and VMware ESXI 5.0/5/1/5.5
• Expertise in planning, installation, configuration and maintenance of IBM AIX 5.3,6.1 and 7.1 versions along with VIO servers versions 1.5, 2.1, 2.2.2.3, 2.2.3.4
• Experienced in LPAR, dynamic LPAR on different Power Series like p550, p570, p595, p630, p650, p670, p690, p770, p795 and IBM Pure flex.
• Assigned resources to the LPAR client through the VIO server and client installations.
• Installed and built from scratch complete NIM Setup. Added different clients to NIM server and their backup.
• Performed Live Partition Mobility (LPM) on the servers on migrating the servers from one frame to another especially IBM Pure flex systems.
• Experience in AIX OS Upgrade from 5.3 to 6.1 and 6.1 to 7.1 and HMC firmware upgrade.
• Expertise in installation, administration, patches, upgrades, Configuration, performance tuning and troubleshooting of Red HatLinux4.x/5.x/6.x, Centos 5.x/6.x, Microsoft Windows 2000/2003/2008 R2/2012 environments and VMware Virtualization Esx/Esxi 4.0, 5.x.
• Experience in virtualizing RHEL and Windows environments withVMwareESX 3.5, 4.0 and ESXi 5.0/5.1 on Dell PowerEdge, HP ProLiant and Cisco UCS Hardware.
• Worked with HP DL and Dell Power Edge Model rack, HP blade centers like HP C6000 & C7000 and Cisco UCS.
• Expert in Jumpstart and Kickstart Installation Methods.
• Installing and updating packages using YUM (custom YUM Servers/repositories) and Red Hat Satellite Server.
• Expertise in Veritas Clustering, Red hat Clustering, Veritas Volume manager and Veritas Net Backup.
• File system tuning using Veritas File System (VxFS) and Logical Volume Manager (LVM).
• Expertise in Installing and Managing LDAP, NIS, NFS, FTP, DHCP, SAMBA, SSH and DNS.
• Experience in shell scripting using sh, bash and ksh.
• Experience in Creation and managing user accounts, security, rights, disk space and process monitoring in Red HatLinux.
• Strong experience and understanding of Auto mounts, TCP/IP, SMTP and Printer configurations.
• Experience with installation and support of applications which include Apache, Tomcat, WebLogic, WebSphere, Jboss.
• Good knowledge in configuring RAID using RAID Manager and LVM in SAN and Host based storage arrays.
• Extensively worked on Oracle RAC requirements, allocated 30 TB of EMC SAN storage on AIX Servers using EMC Power path and MPIO by NPIV method
• Expertise in planning, installation, configuration and maintenance of IBM HACMP V5.1, 5.3, 5.4, 5.5 and Power HA 7.1 system mirror.
• Experienced in AIX system dump generation, resizing dump devices, understanding error reports and coordinating on different issues with AIX system support center.
• Experienced in monitoring system performance and checked the status of the system using utilities such as SAR, TOP, NMON, VMSTAT, IOSTAT, etc.
• Supported WebSphere application server, IBM HTTP/ Apache Web servers in AIX environment for various projects.
• Proficient in SMIT administration and installation, maintenance of RS/6000 systems.
• Knowledge of networking (TCP/IP, Ethernet), NIS, DNS, NFS, DHCP and RAID.
• Extensively used HMC/SDMC to perform various tasks like creating VIOS and LPARS, performing DLPAR operation to change CPU configuration, changing memory, activating profiles, LPARS, power - off frame etc.
• Experience in building Red hat Linux Servers through Kick start installation with PXE Network boot.
• Experience in configuring Red hat Satellite Servers 5.3/5.4/5.5 on RHEL 5.x/6.x servers
• Applied Linux Patching and created RPM packages and YUM repositories.
• Deployed Bonding Concept on Red hat Linux Servers supporting Middleware applications
• Experienced in VERITAS volume manager, configuration and maintenance of VERITAS File system and Red hat Cluster on 2 node Active and Passive configuration.
• Installed, configured and managed VMWARE infrastructure (ESXi, Virtual Center).
• Managed Hosts and Clusters, Resource Pools, VSphere HA, VSphere vMotion, Storage vMotion, DRS, VSphere Upgrade and configured standard and Distributed Switches in VMware Environment.
• Performed VCOPS to maintain the health checks of the VM’S running Windows and Linux.

TECHNICAL SKILLS:

Operating Systems: IBM AIX (4.3.3, 5.1, 5.2, 5.3, 6.1, 7.1) Linux (Red Hat/CentOS 5/6, SUSE 7/8), VMWARE ESXI 5.0/5.1/5.5, Windows 2003/ 2008R2

Hardware: IBM P 795/770/720/670/680/690 (Regatta) series, P 520/550/570/590, P4, Dell PE R900, HP DL380, HP300 Rack Mount Blade Servers, Cisco UCS B440

Languages: C, C++, Bash Scripting, Korn Scripting and Python

Databases: Oracle 8i, 9i, 10G & 11G, DB2, MS SQL SERVER 7.0/2000/2008 R2

Networking: TCP/IP, HTTP/HTTPS, DHCP, FTP, Cisco Routers & Switches

Web/App Servers: IBM WebSphere App Server (6.1/8.5), IBM HTTP Server (IHS), Apache Tomcat, I Planet, Netscape Enterprise Server

PROFESSIONAL EXPERIENCE:

Confidential, Madison, WI

Linux/AIX/VMware System Administrator

Responsibilities:

• Performed the installation, maintenance, upgrading and administration of the logical partitions with AIX Operating systems (5.3, 6.1), VIO (2.2.1 - 2.2.2.3) and Red hat (5/6) Enterprise Edition using CD/DVD, NIM, mksysb and Kickstart installation.
• Experience in Installing, Configuring and Maintaining Red HatLinux (Red Hat EnterpriseLinux4.x, 5.x & 6.x) Servers and Windows 2003/ 2008 R2 Servers on Power Edge Model rack, HP blade centers like HP C6000 & C7000 and also Cisco UCS environment.
• Experience supporting Red Hat servers in Production and Development environments.
• Worked on MPIO to assign dual paths to the VIO servers for the storage connection to make sure that they have safe and available access to the data on the storage disks.
• Worked on creating the Shared Ethernet adapters, Mapping and tagging from the VIO servers to the logical partitions.
• Responsible for updating the micro-codes of the adapters on the existing servers.
• Working on upgrading the NIM server with the latest software, fixes, packages, libraries, RPM’s etc. from the IBM fix central.
• Installing RPM packages on Red hat Linux Servers and applying patching on RHEL 5 & 6 versions
• Configured Bonding on Oracle RAC Cluster using the Round Robin and Active backup options
• Upgraded Oracle 11.2.0.3 database to 11.2.0.4 on Red hat Linux Servers and performed system tuning parameters for 4 node RAC Cluster.
• Performed Restack migrations for Red hat Servers supporting Middleware applications such as WebLogic and Jboss from Physical blade servers to Virtual Machines in the VMware Infrastructure
• Managed the hosts and Clusters using the Cisco UCS Manager and performed Capacity planning
• Configured SMTP using Postfix to allow the inbound and outbound connections for mail server
• Fixed corrupted bootloader using Rescue install process in Red hat Linux
• Enabled SSH, SFTP and SUEXEC access for functional accounts on Linux and AIX Servers supporting WebSphere Applications
• Installed packages using YUM repositories and configured Disk Management using LVM.
• Scanned the Luns on Red hat Linux Physical and Virtual Machines and converted the disks into ASM using bash script
• Worked with the IBM and Oracle on different issues concerning hardware and software problems.
• Configured Puppet on Red hat Linux and CentOS 5.x/6.x Servers.
• Updating and upgrading ESXi servers, vCenter Server, using vSphere Update Manager and VM Tools through manual updates.
• Managed ESXi hosts using vCenter Server/ vSphere Client and VMware Web Client.
• Performed vMotion and Storage vMotion of Virtual Machines across different cluster with respect to security policies and application development requirements.
• Creation of hot and cold Clones Templates from Virtual Machines (VMs). Deployed Virtual Machines from Templates based on requirements and build documents.
• Performed Virtual Machine Snapshots for Application machines for Migrations and failback.
• Experience with creating Standard vSwitches(vSS), Distributed vSwitches(vDS). Isolated networks were created with separate vSwitches and VMkernel Port Groups. Third party tools such as Wireshark packet capturing tool were used for network traffic monitoring, vMotion, storage and Fault-Tolerance (FT) security and stability.
• LUN creation and storage mapping along with Multipathing.
• Provide management of Microsoft Windows 2008, 2008 R2 servers. DNS DHCP and Active Directory.
• Management and administration of Windows 2008 and 2008 R2 Active directory (Created Accounts, Reset Passwords, and Allowed Access to different Directories using NTFS permissions)
• Worked on different ticketing systems like BMC Remedy and Peregrine.
• Worked with the off shore team on various issues and give the server support 24x7
• Worked on rotating shifts in the environment.

Environment: RHEL 5.x, 6.x, ESxi 5.0 / 5.1, IBM Power 590, 570, 550, AIX 5.3/6.1, VMware VSphere 4/5.x, HP DL 380 Blade servers, Cisco UCS, Red hat clustering, Veritas Clustering, Power HA and HACMP, EMC Symmetrix, VMAX, NETAPP

Confidential, Memphis, TN

Linux/AIX/VMware System Administrator

Responsibilities:

• Practical experience with installation, configuration, upgrade and administration of IBM p series, Power5, Power6 and Power7 servers on various levels of AIX operating system 5.2, 5.3, 6.1, 7.1 utilizing NIM for availability on mission critical systems in a fast paced environment & configured RHEL (5.X,6.X) servers.
• Responsible for administration, installation, upgrading, migration, configuration, troubleshooting, security, backup, disaster recovery, performance monitoring and fine-tuning of AIX systems on different oslevels.
• Configured the NIM Master, NIM slaves and nodes installation through NIM.
• Supported a major initiative to migrate SAN storage utilized by Solaris, Linux and AIX servers (typically large Oracle data bases, web and application servers) across several EMC DMX arrays onto EMC VMAX array.
• Performed live partition mobility to move systems from one frame to another frame.
• Migration of development application and database servers on IBM Pure flex systems.
• Built LPARs and supported application migration activities following the build and security standards.
• Supported the collection of performance data via a predefined centralized collection methodology specified by IBM.
• Worked with DBAs on installation of Oracle, restoration and performance tuning.
• Remediate any security issues uncovered by vulnerability scans.
• Installation configuration and testing of VIO server with AIX 5.3, 6.1 on client LPAR’s on 550, 570 and p590, p595 model and using NPIV.
• Hands on experience in configuring ESXi and vSphere4,5 on HP Blades
• Automated server building using system imager, PXE Kick start and Jumpstart.
• Setup and configured failover load balancing using IP bonding for network cards
• Installed and maintained IBM Tivoli Storage Manager (TSM) for Backups and data storage.
• Configuration of NIS, NFS, SAMBA, SENDMAIL, APACHE SERVICES on Linux & UNIX environment.
• Configured backup/archive policies using backup utility and mksysb images of root volume group to meet data archiving requirements and disaster recovery readiness.
• Troubleshooting and administered high availability using Red hat Cluster, VERITAS Cluster server on various business critical database and application production servers.
• Installed PowerHA 2 node cluster on IBM AIX P795 production servers.
• Monitored, troubleshooting, supported and fixed operating system and hardware problems on several versions of UNIX systems.
• Generated reports to show the trends of resource utilization user/CPU/network load/memory.
• Created test servers using Windows Server 2008 R2. Experience with Active Directory.
• Experience in installing, administering, updating/upgrading ESX/ESXi servers, Virtual Center servers and windows virtual machines using VMware Update manager and manual upgrades.
• Set up V-Motion, High Availability (HA), Distributed Resource Scheduler (DRS), and relatedVMwareproducts such as VM Workstation.
• Successfully completed Virtual Machines migration and ESXi boot LUNs from old VMAX to new VMAX storage.
• Cloning, deploying new VM’s from Templates different type of guest OS like Windows 2003/2008 R2, Red hat Linux.
• Creating virtual NIC cards for the respective VMs and assigning the network connections.
• Creating vSwitch’s, different type of port group’s like Service Console, VMKernel, Virtual Machine and assigning the VLAN no’s. Configured NIC Teaming for load balance & failover.
• Attended meetings and analyzed information obtained from management to conceptualize and define operational problems.
• Experienced in upgrading HMC.
• Assisted other UNIX administrators when help was needed (i.e., creating UNIX accounts, writing scripts to perform system administrator functions, responding to trouble tickets, etc)
• Coordinated server maintenance through a well-defined change control process including after hours and weekend (Sunday) work as necessary to support systems
• Performed Firmware level upgrades for the Ethernet/fiber card adapters
• Installed patches, security fixes, packages on AIX and Linux servers.

Environment: IBM Pure flex, Power 795, 770, 740, AIX 5.3/6.1/7.1, RHEL 5.x, 6.x, ESxi 5.5 Vsphere 4/5, HP DL 380 Blade servers, Red hat clustering, Veritas Clustering, Power HA and HACMP, EMC Symmetrix, VMAX, NETAPP and TSM

Confidential

AIX/Linux/VMware System Admin

Responsibilities:

• Responsible for administration of several power 6 and 7 servers including P520, P550, P570, P595, P720, P770 & P790 and RHEL 4.x,5.x,6.x servers
• Administration responsibilities included users, groups, disks, printer, security management, and incident troubleshooting.
• File system maintenance, backup scripting and automation, file sharing permissions, software maintenance, file sets, program fixes and keeping the system software releases to the current level.
• Performed UNIX/Aix server migrations in a data center consolidation project using different migration techniques including replication using SRDF
• Performed hardware migrations from IBM P 0.
• Performed TL upgrades from AIX 5.3 TL 7 to TL 12 as part of hardware migration using alt+disk method.
• Built and configured new VIO servers with VIOS 2.1 on P770.
• Racked, installed and configured p7 p720/750s into a virtualized environment, DUAL VIOS 2.2 and AIX 6.1
• LPARS with SAN bootable LPARS, HBA virtualization (NPIV) and Live Partition Mobility (LPM).
• Installed AIX servers by using Network Installation Manager (NIM) server to deploy AIX system images over the network. Moved AIX servers from old IBM p4/p5 hardware to newer IBM p6/p7 hardware
• Installed RHEL 5.x using Kick-start server on standalone servers and VMware environments.
• Provided solutions to the client about Disk mirroring and RAID implementation using Solstice Disk Suite and VERITAS volume manager and cluster.
• Responsible for patching Linux servers.
• Setup and managed environment using puppet configuration management tools.
• Administered Linux Servers Linux (Red hat - RHEL 3/4/5) for several functions including managing Apache/Tomcat server, mail server, My Sql database and firewalls in both development and production.
• Installation and configuration of Red hat Device Multipathing.
• Captured the image of production server, configuring RAID and build the new server using the image on system image server with PXE boot.
• Advanced knowledge and skills in Linux operating system, high availability/clustering, system backup/restore, kick start and Logical Volume Manager software products.
• Experienced in installation and configuration of Web Sphere application servers V3.5/4.0/5.x/6.x, IBM HTTP Server on AIX, Solaris and Linux platforms
• Deport/imported volume groups.
• Performed a failover or fail back of resources within an HACMP 5.5 clusters from the primary node to secondary node and vice versa
• Configured Esxi hosts and created a virtual center for development, test and production environments
• Managing VM’s and ESXi hosts by using vSphere Client, Putty and Web Access and installing the VMware Tools on the VM’s.
• Worked on Migration concepts like vMotion and Storage vMotion.
• Assisted in P2V conversions of Windows servers using VMware vConverter & Platespin
• Worked on servers configured with EMC Clariion, EMC Symmetrix, EMC Celera, EMC VMAX storage
• Split and established the EMC Symmetrix SRDF link used to mirror data from the live site to the DR standby site

Environment: Power 520, 550, 570, 595, 795, 770, 740, AIX 5.3/6.1/7.1, RHEL 5.x, 6.x, ESxi 5.5, Vsphere 4/5, HP DL 380 Blade servers, Red hat clustering, Veritas Clustering, Power HA and HACMP, EMC Symmetrix, VMAX, EMC Celera and TSM.

Confidential, NJ

UNIX/AIX/LINUX Administrator

Responsibilities:

• Experience in Installing, Configuring and Maintaining RedHatLinux (Red Hat EnterpriseLinux4.x, 5.x & 6.x) Servers and Windows 2003/ 2008 R2 Servers on Power Edge Model rack, HP blade centers like HP C6000 & C7000 and also Cisco UCS environment.
• Experience supporting Red Hat servers in Production and Development environments.
• Responsible for installing, configuring and maintenance and systems development of AIX 5.2/5.3/6.1 servers.
• Installation and configuration of VIO server with AIX 5.3 on client LPAR’s on P5 servers.
• Software installation, updating and trouble shooting on systems using NIM and media.
• Troubleshooting server via HMC 7.x and web sm for console access.
• Installing and troubleshooting on VIO clients. Upgrading servers to new technology level.
• Worked on remediation project, which made the client’s environment secured by disabling the unsecured services.
• Assembled necessary resources to create 2 node HACMP 5.4 failover environments which involved AIX/SAN/LPAR configuration.
• Ensured server data integrity by evaluating, implementing and managing software solutions like Tivoli Storage Manager.
• Configured NIM server, Alternate NIM server and NIM clients and performed OS installation and OS backup (mksysb) for the clients from NIM server.
• Maintaining AIX kernel, volume groups, logical volume, JFS file system for better performance. Schedule cron job for automate the task for later execution.
• Setup the full networking services and protocols on AIX and Linux, including NIS/NFS, DNS, SSH, DHCP, NIDS, TCP/IP, ARP, applications, and print servers to insure optimal networking, application, and printing functionality.
• Tuning of the TCP/IP stack for troubleshooting application and OS issues.
• Responsible for downloading and upgrading the patches as per the system requirements.
• Support the PeopleSoft/Weblogic team by helping in the OS and Application upgrades and installation of new SSL s for Weblogic 10.1.
• Maintenance of VERITAS Cluster Server.
• Used NetBackup for backing up & restoration of file systems.
• Built new servers using Custom jumpstart installation and Kick start.
• Worked with Firewalls using IP Tables.
• Well versed with installing, maintaining/ configuring Windows 2003 & 2008 R2, its shell variables, networks & equipment’s, DNS, DHCP, WINS, Port Tracking, Active Directory and Recovery Console etc.
• Administration and troubleshooting multi-terabyte EMC frames connected to multiple platforms including AIX 5.2, 5.3, Solaris.
• Supported AIX library calls and file sets for optimum availability. Configured device with device drivers. Worked with file system corruption problem, boot problem, recovery after hardware failure. Engaged appropriate resource for prompt problem resolution.
• Sound Knowledge of HACMP troubleshooting and dealing with day to day problems.
• Configured, upgraded, managed HACMP cluster and worked with HACMP resource and node failover/failback with various AIX levels on IBM p Series environment.
• Worked with assigned problems, change and emergency change tickets based on appropriate severity levels. Consistently active in meetings for problem resolutions and new potential projects using remedy problem tracking tool and lotus notes.
• Development of shell scripts for automation of systems administrative tasks.

Environment: Power 520, 550, 595, AIX 5.3/6.1, RHEL 4.x, 5.x, ESxi 5.0, Vsphere 4, HP DL 380 Blade servers, HACMP, EMC Symmetrix, VMAX, EMC Celera and TSM.

Confidential, San Jose, CA

Systems Administrator

Responsibilities:

• AIX administration supporting p590, 570, 550, RS6000 servers, installing, configuring and maintaining Web Sphere application server, Samba server and IBM HTTP server.
• Worked on remediation of AIX 4.3, 5.1, 5.2, 5.3, 6.1, 7.1 Solaris 8,9,10, Linux and HPUX servers of the client catholic healthcare west environment.
• Wrote korn shell scripts to automate and speed up the remediation process.
• Day-to-day activities such as user accounts maintenance, security; including environment variables and profiles, LVM, Kernel/system boot, TCP/IP, remote login, ODM, fiber storage attachment, LPAR, and device drivers install, as well as microcode upgrade.
• Reviewed server configurations for capacity planning, and recommended growth solutions.
• Configured and supported Logical Partitions/Micro Partitions (LPAR), via HMC (Hardware Management Console).
• Installed VIO server POWER Virtualization on IBM P5& P6 System.
• Extensively used HACMP - CSPOC to create VG’s, LV’s and file systems.
• Extensively worked on setting up of HACMP clusters including RGMOVE and performed failovers, starting up and shutting down the HACMP cluster application for change activities.
• Allocated 3200GB storage to expand existing DB Instance to 6400GB Raw. This storage is for an oracle RAC database which is in a clustered environment on 4 standalone AIX servers.
• The luns added to RAC DB were using Oracle ASM (Automatic Storage Management) Worked on removing around 20,000 users present on 800 servers using korn shell scripting. like ftp, telnet,nfs, rlogin, rshell, rexec, snmp, finger, rsh,ruserd, tftp, rwho etc.
• Worked on users while remediating the servers in NIS environment in Linux Servers.
• Was a part of the enterprise on-call schedule for UNIX administration and supported other flavors of UNIX administration.

Environment: Power 4 and 5 servers, AIX 4.3/5.3/6.1, VIO Servers, RHEL 4.x, 5.x, ESxi 5.0, Vsphere 4, HP DL 380 Blade servers, HACMP, EMC Symmetrix, NIS