SUMMARY

• 7 years of IT experienced in Linux/Unix Systems Administration and Server Virtualization, worked closely with Software development, application and database teams to meet business and technical demands
• Experience in installation, configuration, backup, recovery, maintenance, and support of RedHat Enterprise Linux, Oracle Enterprise Linux, SUSE, CentOS and AIX on Virtual VMWare and Physical HP, Dell and IBM environments
• Experience in Linux-based Virtualization implementations such as VMWare and Xen
• Experience in Managing VMware ESX servers 3.x/4,x/5.x running on HP/Dell/IBM,C7000 Cisco UCS hardware and supported VM's running Linux and Windows
• Experience in cloning virtual machines using guest operating system template on VMWare ESX server
• P2V, V2P migrations using VMware Converter, Plate Spin 6.8.x
• Working knowledge of TCP/IP, FC SAN, NAS and iSCSI
• Working knowledge of EMC and Hitachi SAN infrastructure
• Configuration of Hardware and Software RAID, disk replacement and File system recovery
• Experience in configuring Emulex QLogic HBA on RHEL along with dm-multipath and PowerPath
• Strong knowledge on Network concepts like f5 load balancer, VLAN trunking on switches, ESX clusters, and physical machines.
• Configured Kickstart for automated network installation of Red Hat servers.
• Installed, Configured and maintained Redhat Satellite Server
• Expert in Configuring Custom Redhat channels, creating standard Kickstart Profiles in RedHat Satellite server
• Expertise in using HMC to create AIX LPAR, DLPAR, micro partitioning
• Experience on working with disk formatting, pvcreate, creating, extending and reducing of Volume group VG s, Logical volume LV s, disk striping and file systems creation
• Creating, maintaining of user accounts locally and using ldap, user administration, local and global groups on Solaris and Red Hat Linux platforms.
• Maintaining of sudoers file to provide limited sudo access to user to improve the security of the Linux environment
• Worked on configuring network services like NFS, NIS, DHCP, DNS, Web Server, VPN and Firewall
• Installed and setup RHEL servers for applications like WebSphere, WebLogic, tomcat, MQM, SAS, Splunk, ETL and Oracle, DB2, MySQL databases
• Installed and configured WebSphere application servers 6x, 7x, 8x and worked on installing patches updates and migrating WAS from previous versions to newer versions
• Experience in updating and creating puppet modules and pushing them to puppet clients.
• Worked on installing Red Hat clusters for DB2 database servers.
• Preparing servers for Oracle RAC installation which includes tuning the kernel, agent installation, adding storage.
• Associated with Oracle DBA's in designing , building and secure hardening of Database architecture for Oracle RAC , ASM and Standalone Database Systems
• Installed and configured performance monitoring tools like Nagios, Cacti, and tealeaf
• Applying Security patches on Redhat Linux machines on quarterly basis.
• Served as Lead OS analyst for operating system migration projects from AIX, HP-UX, and Solaris to Linux
• Worked on VMWare VM's hardware migration project.
• Worked on OS migrations, upgrade and BIOS and NIC firmware upgrades.
• Solid experience with deploying, configuring, monitoring, fault isolation and troubleshooting of 3 tiered applications in load balanced environments
• Ability to quickly adjust priorities and take on projects with limit specifications in fast paced environments.
• Experience of working in Data centers
• Participate in the 24x7 on call rotation for production environment.
• Experience working on ticketing tools like Remedy, Service Now and HP service manager to resolve helpdesk tickets and change records with defined SLA's.

SKILLS

Operating Systems: Redhat Enterprise Linux 3/4/5/6x, IBM AIX 4.3,5.1, 5.2, 5.3 , VMware ESX 3x, 4x, OEL 4/5/6, CentOS, Windows, SunSolaris 7,8,9 10, SUSE

Programming Languages: C, C , C , Objective Java, HTML, XML, BASH scripting, Perl

Networking Tools: NIS, NFS, DNS, TFTP, Ethernet 10/100Base T, Coax, Thick, Fiber optic, Giga Bit Cards , Fast Ethernet switches, Load balancers, Network monitoring, Communication Protocols: TCP/IP, SNMP, SMTP, OSI, DHCP, TCP Wrappers

Applications Tools: Java, Apache, tomcat, WebSphere, WebLogic, MQM, PHP, WebLogic, SSH, Puppet, Satellite server, Spacewalk, Kickstart, PowerPath, Multipath, SWAP, Hadoop, Cacti, Nagios, Splunk, Tealeaf, VMWare, Vsphere, VMWare converter, SAS, ETL, Informatica, Remedy, Service Now.

Database: Oracle, MySQL, DB2

Hardware: IBM x-series Servers, HP ProLiant, Dell PowerEdge, HP C7000 IBM Blade centers, Cisco UCS

EXPERIENCE

Confidential

Linux Administrator

Responsibilities:

• Installation and configuration of Red Hat Enterprise Linux RHEL 5x, 6x Servers on HP, Dell Hardware and VMware virtual environment.
• Worked with Opsware and Redhat Satellite server to deploy Linux servers.
• Worked on Hitachi, EMC SAN. Worked on Disk Array based Environments.
• Configured Dell DRAC and HP ILO for remote management
• Working with network team to setup Network to Linux Environment
• Working with firewall team to run firewall rules for server going to be built behind firewall and setup rules for server to be built in DMZ
• Configure and Support FC-SAN environment and LUN provisioning.
• Configuring and maintaining virtual server environment using VMWARE ESX/ESXi, VSphere, VCenter.
• Create, Manage and configure virtual machine VM s on VMWare platform
• Worked with backup team to backup Linux servers using Netbackup
• Configured PowerPath for SAN devices and Performed Disk management with the help of LVM Logical Volume Manager
• Configured LDAP client on all Linux machines, which enables all the Linux users to be authenticated on Microsoft Windows Active Directory Server.
• Management of Red Hat Linux user accounts, groups, directories, file permissions and sudo rules
• Configured Redhat Linux servers for SPLUNK installation and involved in splunk installation and worked on increasing the performance using disk striping and changing some VM parameters
• Configured event and file system monitoring tools Envision, Oracle CCC, Snare across the Linux platform.
• Installation and configuration of WebSphere application server WAS 6x, 7x, 8x.
• Installed and configured servers for SAS installation, Kernel and Network parameters setup, ulimit settings for SAS installation.
• Deploy servers, Create file systems, setup user permissions, ulimit settings, kernel parameters settings, disk striping, and network settings for MQM install.
• Performed Kernel tuning with the sysctl and installed packages with yum and rpm for WebSphere application servers.
• Worked on WebSphere application servers patching and migration upgrade of WebSphere application servers from previous version to newer version.
• Managed builds and Deployments, Created Ant Scripts to customize EAR, WAR and JAR files and the application is deployed on WebSphere server
• Installation and configuration of Nagios and Cacti on servers used for Network and performance monitoring.
• Worked with Redhat Package Manager RPM and YUM
• Pushed RPMs across the Linux platform with the help of BigFix and Rebuild corrupted RPM and LDAP database
• Written custom shell scripts BASH and built custom RPM packages to add in post tasks when building new servers.
• Troubleshoot virtual tape drives with mt, tar commands
• Configured version control server CVS and Password-less setup for SSH login using ssh-keygen tool.
• Configured Linux servers as clients to satellite server to use it as repository server and used it for quarterly patching.
• Configuration and administration of DNS, LDAP, NFS, NIS, NIS and Send mail on Redhat Linux servers
• Installed and Configured Web Logic, APACHE and TOMCAT Servers with JAVA Application tools on RedHat and AIX servers environment
• Worked closely with application and database oracle and DB2 teams
• Configured raw devices for database servers, installed and configured Oracle RAC on RedHat servers
• Installed and configured active-active and active-passive Redhat clusters for DB2 database
• Installed servers for Hadoop Cluster and performed Hadoop Admin activities in the environment
• Migration of HP-UX and AIX to Linux
• Involved in P2V migrations using VMware converter and also involved in Storage and Physical VMotion activities
• Writing BASH scripts to automate the operating system tasks
• Performance monitoring using sar, iostat, vmstat and mpstat on servers and also logged to cacti monitoring tool for graphical view.
• Installed, configured HP OpenView and Tivoli monitoring tool for enterprise monitoring
• Build the AIX VIOs and LPAR on the SAN disks without using the internal disks
• Installation and configuration of AIX Dual VIOs Server Version 1.5.2.1 on new POWEER 6 p570 System.
• Provided system performance reporting on a regular basis along with keeping all software at current version levels, and maintaining a log of changes for tracking
• Worked extensively on Service Now ticketing system to perform the tasks/Incidents assigned to our team
• Worked intensely on post build process for ongoing projects
• Served as an escalation point to support team.
• Provided 24/7 Linux on call production support on rotation basis. Responsible for maintaining security on Redhat Linux.

Environment: HP DL580-DL380 G3,G4,G5,G7, Dell PowerEdge, Redhat Enterprise Linux RHEL 5x/6x, Oracle Enterprise Linux OEL 5x/6x, CentOS, AIX, HP-UX, VMWare ESX, VCenter, VSphere, VMWare converter,P2V, V2V,EMC CLARiiON, Netbackup, Oracle, DB2, MySQL, DNS, SFTP, PowerPath, LVM, Java, Apache, Tomcat, WebSphere, WebLogic, MQM, ETL, Informatica, Hadoop, NFS, NAS, RPM, YUM, LDAP, Active Directory, Redhat Cluster, Redhat Satellite server, Puppet, Nagios, Cacti, Splunk, Tealeaf, Cloud, BASH Scripting, Perl, Python.

Confidential

UNIX/LINUX Administrator

Responsibilities:

• Installation and configuration of Red Hat Enterprise Linux RHEL 5x, 6x Servers on HP, Dell Hardware and VMware virtual environment
• Installation, setup and configuration of RHEL, CentOS, OEL and VMware ESX on HP, Dell and IBM hardware
• Installation and Configuration of Sun Enterprise Servers, HP and IBM Blade Servers, HP 9000, RS 6000, IBM P series
• Expertise in enterprise class storage including SCSI, RAID and Fiber-Channel technologies
• Configuration and maintenance of virtual server environment using VMWAREESX 5.1/5.5, VCenter VSphere
• Involved in supporting different HW ranging from Rack to Blade and also supported Vblock HW to run ESX environment
• Configured Enterprise UNIX/LINUX systems in heterogeneous environment Linux Redhat SUSE , Solaris, HP-UX with SAN/NAS infrastructure across multiple sites on mission business critical systems
• Created a standard kickstart based installation method for RHEL servers. Installation includes all changes required to meet company's security standards. Installation method is possible over HTTP, or via PXE on a separate network segment
• Adding SAN using multipath and creating physical volumes, volume groups, logical volumes
• Storage Provisioning, Volume and File system Management using LVM, VERITAS Volume Manager and VERITAS File system VERITAS Storage Foundation , Configuring ZFS file systems
• Creating user accounts, user administration, local and global groups on Solaris and Red Hat Linux platform
• Setup, Implementation, Configuration, documentation of Backup/Restore solutions for Disaster/Business Recovery of clients using TSM backup on UNIX, SUSE Redhat Linux platforms.
• Installed and configured Netscape, Apache web servers and Samba Server
• Installed and Configured WebSphere Application servers on Linux and AIX
• Installation and configuration MySQL on Linux servers.
• Performed quarterly patching of Linux, AIX, Solaris and HPUX servers on regular schedule
• Heavily utilize the LAMP stack Linux, Apache, Mysql, PHP/Perl to meet customer needs
• Installation and configuration of Oracle 11g RAC on Red Hat Linux nodes
• Installed and configured different applications like apache, tomcat, JBoss, xrdp, WebSphere, etc.. and worked closely with the respective teams
• Setup, Implementation, Configuration of SFTP/FTP servers
• Setting up JBoss cluster and configuring apache with JBoss on RedHat Linux. Proxy serving with Apache. Troubleshooting Apache with JBoss and Mod jk troubleshooting for the clients
• System performance monitoring and tuning.
• Working on Shell and perl scripts
• Setting up the lab environment with Tomcat/Apache, configuring the setup with F5 virtual load balancer for customer application
• Document all system changes and create Standard Operating Procedure SOP for departmental use. Resolve all helpdesk tickets and add/update asset records using Remedy Action Request System
• Provide 24x7 on call production support on rotation basis.

Environment: Redhat4x, 5x, Solaris 9/10, AIX, HP-UX, VMware ESX 5.0/5.1/5.5, VSphere, HP ProLiant Servers DL 380/580, Dell Servers R series , Windows 2008 sever, EMC Clariion, Netapp, SCSI, VMWare converter, Apache Webserver, F5 load balancer, oracle, MySQL, PHP, DNS, DHCP, BASH, NFS, NAS, Spacewalk, WebSphere, WebLogic, Java, Jenkins, JBoss, Tomcat, Kickstart.

Confidential

UNIX Administrator

Responsibilities:

• Disk usage monitoring, administering and implementing disk quotas.
• File system management and consistency checks using df,du,e2fsck,mount
• Configured NIS, NFS, Http , CUPS, Samba, DHCP, NAT, Primary Secondary and cache-only DNS servers
• Analyzing and monitoring System performance through various system tools such as netstat, iostat, sar top
• Provided day-to-day user administration like adding/deleting users and managing user's queries.
• Kickstart installations and RPM package management.
• Installed and configured servers with Redhat 4, Centos, Fedora
• Extensively worked in troubleshooting the hardware and software issues
• Configured multi-tier parent/child relationship squid web caching system
• Extensively worked on software and hardware raid on Red Hat Linux machines.
• Extensive knowledge in configuring Samba and NFS for the sharing of files
• Involved in writing shell scripts for monitoring system usage, backup and recovery strategies, automation of jobs, adding new services to the system.
• Researched and implemented a disaster recovery plan.

Environment: RedHat Linux 7.x, 9, RHEL 2.1/3, Fedora Core Linux, CentOS, DELL PowerEdge, Dell, HP Hardware.