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 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.
• Expertise in writing Shell Scripting using Ksh/Csh/bash and Perl to ease administration tasks
• Experience in Installing, configuring and maintaining apache/tomcat, samba & send mail, and Jboss Application Servers.
• Expertise in VMware Virtualization solutions, VM Migration & Cloning.
• Experience in Installation, Configuration, Implementation, up-gradation, Maintenance and 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.
• RPM and YUM package installations and Updating Redhat systems using RPM and yum.
• Efficiency in installing, configuring and implementing the RAID Technologies using various tools like VxVM, SVM and LVM.
• Troubleshooting network problems such as TCP/IP, providing support for users in solving their problems.
• Familiar in LDAP setup and Administration.
• Worked on Setting up and Configuring F5 Load Balancer.
• Installation and configuration of Server on Solaris andJBoss 5.1.2, on RHEL environment.
• Experience in Installation, Configuration, Administration, Monitoring and Troubleshooting of JBoss 5.x, IBM HTTP Server, Apache 2.22, open Source technologies on Linux, Solaris and Windows.
• Worked on JBoss clustering, set up new configurations for JDBC providers, Data Sources, connection pools, Connection factory settings, Virtual hosts etc.
• JBoss configuration is done thoroughly firewalled environment using TCP.
• Responsible for system administration, setting up infrastructure and deployment of Java J2EE applications/web services.
• Responsible for installation, Configuration, Administration and troubleshooting of JBoss SOA-P 5.3.1 on RHEL 6.3 in all environments.
• Good presentation, customer support and trouble shooting skills & experience in providing 24x7 supports.

TECHNICAL SKILLS

Operating Systems: 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

Application servers: JBoss AS 5.x, 6.x, 7.x and JBoss EAP 5.x, 6.x

Web Servers: Apache(httpd), apache-tomcat, and Apache http server

E-Mail servers: Sendmail, Postfix, Zimbra

Monitoring: Nagios, ZABBIX

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

Database: Oracle 8i/9i/10g, DB2, MS SQL Server 7.0/2000 and Sysbase

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

Virtualization tools: VMWare vsphere

Others: MS-Office

PROFESSIONAL EXPERIENCE

Confidential, Albany, NY

Linux Administrator

Responsibilities:

• Deployment, configuration and administration of VMware VSphere 5.1 environments as well as Red Hat (5.x and 6.x) and Oracle Enterprise Linux (OEL) environment and installed required binaries and packages.
• Configured and monitored Disk mirroring, stripping using LVM
• Managed Disk File Systems, server Performance, Users Creation and granted file access Permissions.
• Created groups, added Users ID to a group as a primary or secondary group, removing Users ID from a group as well as adding users in Sudoers file.
• Performed administration tasks related to DNS, BIND, DHCP, NIS, LDAP.
• Setup and configured DHCP, Kickstart, and PXE servers for automated system builds.
• Configured servers, install patches, and support the virtual infrastructure
• Worked on the configuration of server monitoring tool like Nagios XI.
• Configured Resource Pool, V Motion, Alerts, Alarms, NTP, HA, DRS and deployed virtual servers using template.
• Migrate Physical Servers to Virtual Serves using VMware Converters and migration of Virtual Machines using V-Motion.
• Configuration and Installation of JBOSS 5.x on Linux servers.
• Installation/Activation of F5 Load balancers, configure routing logic, creation of new service pools, members, virtual servers etc.,
• Installed and configured Apache Webserver, edited httpd.conf settings and installed mod proxy for load balancing.
• Deployed Java applications/Web-services using CI/CD tools like Jenkins, Puppet in standalone and clustered environments
• Installed JON Agent and configured dashboards, alerts for JVM monitoring
• Installation and configuration of Web Services and JBoss4.0 Application Server on Solaris and Linux boxes.
• Installed and configured JBoss application servers for DEV, QA and PROD systems.
• Deployed application from console of JBoss Eap 5.1 as well as done the hot deployment and configured Apache for JBoss domains wif virtual servers.
• Performance tuning included tuning the existing heap values, DB Connection settings etc.
• Created Templates from VM’s, deploy VM’s from templates and allocate resources
• Setting up Users and Groups for access to the Virtual Center.
• Migrated VM from one LUN to another LUN using Storage V-Motion.
• Performance tuning of VMware servers, Virtual sessions and management of servers resources between Virtual Machines.
• Managed shared NFS files system, mounting and unmounting NFS server, NFS client on remote machine, sharing remote file folder, starting and stopping the NFS services.
• Worked on configuration and administration of LVM as extending Logical Volume and Physical Volume Size.
• Worked on iLO and iDRAC setup and configuration.

Environment: Red Hat Enterprise Linux 5.x, 6.x, LVM, JDK 6.x and 7.x, HITACHI, EMC, VMware VSphere 5.1, DNS, DHCP, DIG, SNMP, SMTP, Ethernet, netstat, NFS, NIS, nslookup, TCP/IP, tcpdump, Korn shell, Cisco switches & routers, VLAN, Fiber Channel, Nagios XI, Perl, Bash, Tomcat and Apache and JBoss Eap 4.x.5.x

Confidential, Rosemont, IL

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.
• Installation of Web logic, upgraded to service pack updates, installed BEA patches, configuring and creation new domain & services starting & stopping.
• Planning and implementing Backup and Restore procedures using Ufsdump, Ufsrestore, Tar” and “Cpio”.
• Installed and configured the Red Hat Linux 5.1 on HP-Dl585 servers using Kick Start.
• Monitoring day-to-day administration and maintenance operations of the company network and systems working on Linux and Solaris Systems.
• 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 logical volumes using logical volume manager (LVM) and also configured mirroring.
• Production support of Apache, PHP, My SQL, Tomcat including installation, configuration, management and troubleshooting.
• Involved in developing custom scripts using Shell (bash, ksh) to automate jobs.
• Defining and Develop plan for Change, Problem & Incident management Process based on ITIL.
• Merged the generated reports as per request. Formatted data into required format using UNIX Shell Scripts, SED and Awk.
• Networking communication skills and protocols such as TCP/IP, Telnet, FTP, NDM, SSH, rlogin.
• 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 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 JBoss clustering, set up new configurations for JDBC providers, DataSources, connection pools, Connection factory settings, Virtual hosts etc.
• Installed and configured JMX-based services on JBOSS.
• Configured JNDI and JMS on JBOSS.
• NIS, NFS, AUTOFS, NTP Configuration and Administration.
• Define Mapping Servlets, Filters, and Session Configuration on JBOSS.
• Production support of Apache and JBoss including installation, configuration, management and troubleshooting. Installation and monitoring of Veritas Volume Manager, VeritasNetBackup and Veritas Cluster Server on SAN Environment.
• Worked on the administration of the JBoss 4.2.2servers including installation and deployments.
• Extensive experience in Security Patching.
• Also coordinating wif storage team and networking teams

Environment: REDHAT LINUX 4.x,5.x,6.x, SUN fire T2000, T4k, M 5000, JBOSS AS 4.x,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, puppet, Brocade Switches, chef, RED hat satellite server

Confidential, Huntsville, AL

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 known 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 there 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.
• Implemented Puppet, DevOps.
• Analyze and suggest corrective methods on performance issues.
• Adding additional and extension of existing File systems using VxVM and Vxfs. Configuring autofs for automount. Upgrading the Application as per Application team requirements. Scheduling jobs using crontab and at.
• 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 supportand troubleshooting duties in a 24x7.
• Done wif LAMP Setup in Ubuntu, MySQL setup, Performance Tuning, Replication, Commands, Backup and overall Administration.

Environment: Redhat Linux 3,4,5,6 Sun Solaris 8,9,10, Sun V440, V 20 T5240 Sparc stations 20, Switches, VMware ESX 5.1, oracle 11, Veritas Cluster Server 5.

Confidential, Erwin, TX

Linux Administrator

Responsibilities:

• Installation, Maintenance, Administration and troubleshooting of OEL Linux, Sun Solaris, AIX, HP-UX systems.
• Performed automated installations of Operating System using Jumpstart for Solaris and Kickstart for Linux.
• Administration of RHEL and AS 3, 4, 5 which includes installation, testing, tuning, upgrading and loading patches, troubleshooting server issues.
• Creating, cloning Linux Virtual Machines, templates using VMware Virtual Client 3.5 and migrating servers between ESX hosts.
• RPM and YUM package installations, patch and other server management.
• Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
• Worked and performed data-center operations including rack mounting, cabling.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Installing, administering Redhat using Xen, KVM based hypervisors.
• Adding SAN using multipath and creating physical volumes, volume groups, logical volumes.
• Installing and configuring Apache and supporting them on Linux production servers.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP.
• Experience in installation of Splunk tool, proficient in Splunk search and building reports and alerts.
• Installed and verified dat all AIX/Linux patches or updates are applied to the servers.
• Designing Firewall rules for new servers to enable communication wif application, Oracle 10g servers.
• Installed, configured, and maintained WebLogic 10.x and Oracle 10g on Solaris &Redhat Linux.
• Performance monitoring wif Sar, Iostat, VMstat, MPstat and Other Tools.
• Took UNIXnative backups and restore using ufsdump, ufsrestore& tar commands.
• Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.
• Developed automated processes dat run daily to check disk usage and perform cleanup of file systems on UNIX environments using shell scripting and CRON.

Environment: Red-Hat Linux Enterprise servers (HP Proliant DL 585, BL 465/485, ML Series, SAN(Netapp), BladeLogic, Splunk, Solaris 8,9,10, Veritas Cluster Server 5.0, Windows 2003 server, Shell programming, JDK 1.5,1.6, HP SIM, Nimsoft, VMware Virtual Client 3.5, AIX 5.2, 5.3, VMware Insfrastructure 3.5.

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.
• Disk Management Utility. Used daily for file system creation and file system management.
• Worked in Qmail MTA Installation and Configuration.
• Patch and package administration for installation of patches as per the company policy and installation of packaged application
• Performed tasks on F5 load balancer like installing and renewing SSL certificates and bouncing servers wif performance issues after taking them out of the server pools.
• User, Group management for all the UNIX servers
• Modifying/ Writing scripts in Bash and Korn shell for optimizing day to day administration
• Editing crontab in post - installation of Unix servers

Environment: Redhat Linux 4,5,6 Sun Solaris 8,9,10 Sun V440, V 20 T5240 Sparc stations 20, Switches, VMware ESX, Oracle, Apache Web Server 1.3.x, 2.2.x, Sun Java System Web server 6.0, Veritas Volume Manager 4.1, 5, BigIP F5, Oracle 9i, DNS, NFS, Sun T2000, M5000, v480, v880.