SUMMARY

• Over 7 years of IT experience specialized in UNIX System Administration working on server - based operating system; kernel configurations on Redhat Linux, CentOS, SUSE, Debian 7, Ubuntu 12.x/13.x and Solaris 8,9 (32 bit & 64bit) Networking, kernel Parameter & Tuning, Trouble Shooting System & Performance Issues, Package Management and Patch Management.
• Extensive experience in installation, configuration and administration of Solaris 2.x,7,8,9,10, Redhat 7.3,8,9,IBM AIX 4.3,5L. Support and maintenance of Sun Ultra Enterprise Servers (E3500, E4500, E450, E420R, E250), Sun Fire (6800, 4800, 3800, V880, V4xx, V2xx,).
• Experience in Installation, Configuration, Implementation, Upgradation, Maintenance & Troubleshooting of Weblogic and Apache Server.
• Experience in implementation and maintenance of VMware, DNS, DHCP, NIS, NFS and SMTP.
• Proficient in handling Hardware issues, Migration and Data Center Operations.
• Proficient in Linux Utilities: KICKSTART, SSH, FTP, AUTOFS, Quota Management, wrappers, User Management, Process Management, Memory Management, and Text processing tools, Log Management, Package Management, Disk Management and Swap Partition/Files Management.
• Proficient wif mail technologies such as SMTP/ICMP/POP3/send mail/mailx, Zimbra.
• Experienced in installation and configuration of MRTG, CACTI. NAGIOS, Zimbra mail and chat server
• Experienced in implementing Splunk, Puppet, Chef, DevOp.
• Experienced in using cloud providers and API's for Amazon(AWS) wif CloudSigma(EU).
• Proficient in writing Shell and Perl scripts to automate business process.
• Experience in Python and Ruby scripting.
• Experience in Installing, configuring and maintaining apache/tomcat, samba & send mail, Web Sphere Application Servers.
• Expertise in VMware Virtualization solutions, VM Migration & Cloning.
• Experience working wif LDAP/Kerberos autantication and Access Management control in mixed environments using tools like VAS.
• Experience in Installation, Configuration, Implementation, Upgradation, Maintenance Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.
• Expertise in file system concepts like LVM, SVM, VxVM. Creating new file systems, increasing and decreasing file systems, mounting file systems, unmounting file systems and troubleshooting Disk space issues.
• Efficiency in installing, configuring and implementing the RAID Technologies using various tools like VxVM and SVM.
• Planning, documenting and supporting high availability, data replication, business persistence, fail-over, fail-back using VERITAS Cluster Server 4.x, 5.x.
• Familiar in LDAP setup and Administration.
• Configured Networking Concepts DNS, NIS, NFS and DHCP, troubleshooting network problems such as TCP/IP, providing support for users in solving their problems.
• Good presentation, customer support and trouble shooting skills & experience in providing 24x7 supports.

TECHNICAL SKILLS

Operating System: Solaris 10, Windows 2K, XP, 2003, NT, 2008, 2012, Red Hat Linux ES 4, 5 and 6, AIX 7, HP-UX 11.23

OS Administration: RedHat 6 Linux administration, Solaris 10 Administration

Scripting Tools: Shell, Perl, Python, Ruby

Scheduling Tools: Autosys, crontab

E-Mail servers: Sendmail, Postfix, Zimbra

Monitoring: Nagios, ZABBIX

Networking: DNS, DHCP, TCP/IP, SMTP, LDAP

Database: Oracle

Others: MS-Office

Third Party Tools: MRTG, CACTI, Splunk, Puppet, Chef, DevOp

Virtualization tools: VMWare vsphere

PROFESSIONAL EXPERIENCE

Confidential, Dallas, TX

Senior Linux Administrator

Responsibilities:

• LAMP Server Build and Configuration.
• Configuring postfix/sendmail servers on Redhat Linux include webmail like squirrelmail / horde
• Installation and configuration of RedHat Enterprise Linux on HP, DL 120, G6 and Dell E2960 hardware
• Configuration of Nagios, Munin monitoring tool.
• Implemented automation tools such as Splunk, Puppet, Chef and DevOp
• Updating Redhat / fedora systems using RPM and yum.
• Installing Virtual servers on VMWare ESX.
• Installing the required components on the cloud server and Deploying the application.
• Scheduling backup to the mounted drive on the cloud server.
• Copying files o the cloud server for deployment.
• Configuring vCenter, vSphere client, vSphere Web client
• Svnserve(subversion) version control software installation and administration.
• Bash scripting for backup and file copy.
• RedHat to auto update patches from RHN
• Setting up Static ip address for Linux servers.
• Implemented host security on CentOS, OpenSuse and Redhat Linux 5.3
• Installing MySQL on Linux Server and securing installation
• Assigned privileges to users on Linux
• Installed and managed Apache on Linux Servers for application services
• Network management and System configuration
• Configuring SVN Repository and providing user access
• Configuring Kerberos on Linux servers for secure application autantication
• Scheduling Cron jobs for daily incremental and weekly full backups
• Creating Apache virtual hosts
• Implementing internal ssl autantication
• Configuring smtp server for relaying mails from applications
• Providing Tier 3 Application support
• Closely working wif Development and QA teams.

Environment: RHEL 6.5, IBM-AIX 7, Nagios v4, Oracle 11g and Weblogic 12c.

Confidential, Columbus, IN

Sr. Linux System Administrator

Responsibilities:

• Installation Red hat Linux Enterprise Server 5/6 on Dell and HP x86 HW.
• Installed and configured Solaris 10/11 on Sun T and M Series servers Mirrored root disks on all the servers by using ZFS & VxVm.
• Providing 24 x 7 supports to various application level server level & network level Monitoring and troubleshooting of any datacenter outages. Day - to-day administration on Sun Solaris which includes Installation, upgrade and loading patches.
• Installation of Web logic, upgraded to service pack updates, installed BEA patches, configuring and creation new domain & services starting & stopping.
• Installation of Oracle on Linux and Solaris, creating database, creating Oracle users etc.
• Veritas Netback up installation, Catalogue backup and maintenance Backup/restore on ADIC (Intelligent Storage - Scalar i2000k - Library Management Console) using server Windows NT/2000 & Sun Solaris server and checking the job failures.
• Planning and implementing Backup and Restore procedures using Ufsdump,Ufsrestore, Tar” and “Cpio”.
• Installed, managed Verities Volume Manager 5 (VxVM) on Solaris 10. Created Veritas File Systems.
• Production support of Apache and JBoss including installation, configuration, management and troubleshooting.
• Documented Apache Web Server Development, Staging & Production environments, installed configured and managed Solaris 10 Zones on Sun Enterprise systems, Administered, maintained Red Hat 5/6 Troubleshooting Hardware, Operating System Application & Network problems and performance issues; Deployed latest patches for Sun, Linux and Application servers, Performed Solaris and Red Hat Linux Kernel Tuning for TCP stack.
• Installation and monitoring of Veritas Volume Manager, Veritas NetBackup and Veritas Cluster Server on SAN Environment.
• Involved in installing Puppet client on Red hat & Solaris servers for Automation purpose.
• Established new user accounts and password. Added and configured hardware devices like hard disks, network interfaces.
• Monitoring day-to-day administration and maintenance operations of the company network and systems working on Linux and Solaris Systems.
• Installed and maintain RHEL and SuSE provisioning servers for efficient builds per best practices
• Installed and configured the Red Hat Linux 5.1 on HP-Dl585 servers using Kick Start.
• Configured the NIS, NIS+ and DNS on Red Hat Linux 5.1 and update NIS mapsand Organize the RHN Satellite Servers in combination wif RHN Proxy Server.
• Installed and configured the RPM packages using the YUM Software manager.
• Configured root disk for its clustered file system on RED HAT LINUX5.X.
• Configured logical volumes using logical volume manager (LVM) and also configured mirroring.
• Installation of Web logic Application server, upgraded to service pack updates, installed BEA patches, configuring and creation new domain & services starting & stopping. Installation of Oracle10g on Linux and Solaris, creating database, creating Oracle users & export and importing database, creating rollback segment etc.
• Production support of Apache, PHP, My SQL, Tomcat including installation, configuration, management and troubleshooting.
• Involved in developing custom scripts using Python, Perl & Shell (bash, ksh) to automate jobs.
• Merged the generated reports as per request. Formatted data into required format using UNIX Shell Scripts, SED and Awk.
• Defining and Develop plan for Change, Problem & Incident management Process based on ITIL.
• Networking communication skills and protocols such as TCP/IP, Telnet, FTP, NDM, SSH, rlogin.
• Installed HBA cards and upgraded Firmware in VMware ESX and RHEL. Created large volumes using LVM from the EMC LUN's. Resized the volumes online in RHEL AS 4.0..
• Written shell scripts and Perl scripting to take backup oracle database.
• Security auditing using Korn programming. Shell Programming for day to day system administration.
• Kick start the Red Hat Linux RHEL 6 on HP Power edge servers and Cisco UCS servers.
• Deploying Veritas Clusters and Oracle 8i test databases to implement disaster recovery strategies, ensuring uninterrupted availability of the global systems.
• Configured Logical storage Manager (LSM) for root disk encapsulation and implemented root disk mirroring for fault tolerance.
• Experience in BIOS UPGRADE and OS installations and configurations and maintenance
• Worked on the administration of theWeb Logic 9, JBoss 4.2.2servers including installation and deployments.
• Extensive experience in Security Patching
• Also coordinating wif storage team and networking teams
• Ability to effectively communicate across vendors wif different departments and provide resolutions to all levels in the organization, both verbally and in written documentation through on 24 * 7 on call Support.

ENVIRONMENT: REDHAT LINUX 4.x,5.x,6.x, SUN fire T2000, T4k, M 5000, and Veritas volume manager5.x, Veritas Net backup 6.5, Web logic 10.x.,Oracle 10G/ 11i/RAC, HP 9000 Superdome SX1000, Volume Manager, VMWare ESX SERVER,, Shell scripting, SAN/Mc Data Switches, Brocade Switches, RED hat satellite server

Confidential, AUSTIN, TX

LINUX ADMINISTRATOR

Responsibilities:

• Responsible for supporting Linux System Administrator customers wif RHEL/CentOS/Ubuntu operating systems questions and problems via telephone, FAX, and email. Researched the data base for non problems or tested the customers’ problem on a test system in the same environment. Aided customer in resolving their problem using the tools in the Linux OS or from the command line.
• Provisioning and support of Production, QA and Developers environment.
• Deployment and Build of various environments.
• Overall responsibilities include checking the health of servers, updates and backup. Check wif the trouble ticketing system for any unread ticket. Also troubleshooting if their any bottlenecks; Responsible to perform BIOS update on Dell Systems. Handled all system administration duties for all Red Hat Linux and VM Servers on site. Responsibilities ranged from daily tasks to more advanced ones such as shell scripting, software installation and system/network troubleshooting.
• Responsible for the Server Administration tasks in the web & server support areas.
• VERITAS Volume Manager and VERITAS File System troubleshooting and Administration.
• Mutli-tier application environment wif Weblogic, WebSphere. Mission Critical 24x7 Servers support.
• Configuration and Installation of JBOSS 4.x on Linux servers.
• Installed and configured JMX-based services on JBOSS.
• Define Mapping Servlets, Filters, and Session Configuration on JBOSS.
• Configured JNDI and JMS on JBOSS.
• NIS, NFS, AUTOFS, NTP Configuration and Administration.
• Analyze and suggest corrective methods on performance issues.
• Adding additional and extension of existing File systems using VxVM and Vxfs. Configuring autofs for auotomount. Upgrading the Application as per Application team requirements. Scheduling jobs using crontab and at.
• Done wif LAMP Setup in Ubuntu, MySQL setup, Performance Tuning, Replication, Commands, Backup and overall Administration.
• Tuned servers for maximum efficiency for Oracle and MySQL Data Bases.
• Performed workstation and server installations and upgrades, standardized workstation configuration, automounter, sendmail, and hardware upgrades; administration support and troubleshooting duties in a 24x7.

Environment: Redhat Linux 3,4,5,6 Sun Solaris 8,9,10, JBOSS AS 4.x,Sun V440,V490 T5220 T5240 Sparc stations 20,Switches, VMware ESX 5.1,oracle 11,Veritas Cluster Server 5,Veritas Operations Manager.

Confidential, Canonsburg, PA

Linux Systems Administrator

Responsibilities:

• Involved in Design, Configuration & Implementation of Unix/Linux migration activities from 3PAR to EMC SAN devices like VMAX.
• Involved in 24X7 Production support, Build and Migration Assignments.
• Worked Primarily on RHEL 4/5, HPUX, IBM AIX 4.3, 5L and Solaris 9 Operating Systems.
• Text processing, also in network programming wif Perl Scripting.
• Involved in migration activities using Redhat LVM, Solaris LVM, Veritas and EMC Open Migrator.
• Installation of OAS (Oracle Application Server) on Solaris 9 and its configuration wif oracle database.
• Experience running EMC GRABS, Heat and Sun Explorer reports and working wif EMC and SUN/Oracle support teams.
• Migrated ORACLE RAC servers using system EMC Open migrator and effectively 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.
• File system tuning, growing, and shrinking wif Veritas File system 3.5/4.x.
• Installed and configured GFS cluster for holding databases.
• Manage user accounts for the team access for Redhat Satellite Server.
• Build channels and pull the packages from master Redhat Satellite Server.
• 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.
• Created new slices, mounted new file systems and unmounted file systems.
• Expertise in troubleshooting the systems and managing LDAP, DNS, DHCP and NIS.
• Worked wif different Active directory databases like Microsoft AD, Tivoli Directory server wif LDAP.
• Worked on making DNS entries to establish connection from server to DB2 database.
• Experienced Cloud Computing technology.
• Performed patching, backups on multiple environments of Solaris, Linux and VMware.
• 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 (RHEL 4/5/6), Solaris 9, IBM AIX 4.3, 5L, Logical Volume Manager, Sun & Veritas Cluster Server, Global File System, Redhat Cluster Servers.

Confidential

System Administrator

Responsibilities:

• Performed system administration of UNIX servers by using Operating Systems of Solaris 2.7/8 Managing SUN Solaris, Compaq and Linux workstations and servers.
• Installation of patches and other software packages Disk and File system management through Solstice Disk Suite on Solaris and other logical volume manager for other flavor of UNIX.
• Configuration of Hardware and Software RAID on Digital & Sun Servers.
• Installation of Oracle Patches and Troubleshooting, Creating and modifying application related objects, Creating Profiles, Users, Roles and maintaining system security.
• Configuration and maintenance of NIS, NFS, DHCP and DNS Servers on Solaris.
• Worked in Qmail MTA Installation and Configuration.
• Disk Management Utility. Used daily for file system creation and file system management.

Environment: Redhat Linux 4,5,6 Sun Solaris 8,9,10 Sun V440, V490 T5220 T5240 Sparc stations 20, Switches, VMware ESX, Oracle.