PROFESSIONAL SUMMARY:

• Over 8+ years of IT experience in System Administration under heterogeneous environment of Red Hat Linux Enterprise EL 4.x, 5.x, 6.x, 7.x Centos Linux 4.x, 5.x, UNIX, AIX (5.x), Microsoft Windows Servers/XP, Sun Solaris, Suse 11.x, 12.x, VMware Vsphere ESX/ESXi environment.
• Experience in System Administration, System Builds, Server builds, Installs, Upgrades, Patches, Migration, Trouble Shooting, Security, Backup, Disaster Recovery, Performance Monitoring and Fine - tuning on Red Hat Linux Systems.
• Strong experience in Backup, Job Scheduling, Disk Management, Logical Volume Management (LVM), Logical Partitioning and troubleshooting network problems.
• Experience working in AWS cloud environment like EC2 & EBS and involved in supporting AWS VPC.
• Extensive understanding of networking concepts, (IE. Configuration of networks, router configuration and wireless security, TCP/IP, VPN, Content Filtering, VLANs, and routing in LAN/WAN, Ethernet Port and wireless networks).
• 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.
• Working knowledge on Automatic Storage Management (ASM) and experience in Shell scripting (Ksh/Csh/bash/powershell /Sed/Awk)
• Experience Installation and configurations Splunk for all kind of Application, System logging so that various support team can get information online instead of combing the log files.
• Helped to establish standards, policies and procedures for all aspects of UNIX server environment (e.g., configuration, administration, documentation, etc.)
• Installation and configuration of Solaris Zones and ability to work with ZFS/SMF/POOLS.
• Proficient DB administration (Oracle, DB2, Mongo, MySql, Sybase and SQL) knowledge for maintaining, pruning, and performing required DB tasks.
• Provided production support in an on-call rotation in a 24x7 environment.
• Extensive experience in installation, configuration, maintenance, design, development, implementation, and support on Suse Linux 10/11/12 and Linux RHEL 5/6/7 Environments.
• Dedicated to optimization, experienced DevOps Engineer understands the melding of operations and development to quickly deliver code to customers
• Expertise in understanding of error logging subsystem, resolving technical issues by Diagnosing, Problem determination, Troubleshooting and providing Root Cause Analysis.
• Experience in Virtualizations VMware ESX 3.5, 4.0, 4.1, 5.0 and Red Hat KVM, hypervisor.
• Installed, Supported Application and middleware WebSphere Application Server, IBM HTTP/ Apache Web Servers in AIX and LINUX environment for various projects.
• Knowledge and experience in supporting different databases like DB2, Oracle on AIX and LINUX.
• Experience with LVM, User & System Resource Management, Job Scheduling and Paging Space Management.
• Experience in Shell scripting to automate system administration jobs as per the customer requests.
• Experienced in monitoring system performance and check the status of the system using utilities such as SAR, TOPAS, VMSTAT, IOSTAT, NETSTAT etc.
• Expertise in implementation and designing of disaster backup and recovery plan.
• Experience in installing, configuring, supporting and troubleshooting Unix/Linux Networking services and protocols like NIS, NIS+, OSPF, LDAP, DNS, NFS, DHCP, NAS, FTP, SSH and SAMBA.
• Specialized in LOAP (Linux, Oracle, Apache and PHP).
• Experience in Installation and configuration of Webserver (Apache 2.2.17), MySQL 5.5 and PHP in a LAMP stack.
• Experienced in working with SAN team, Network team, Performance team, Capacity team, Application team and Database team to resolve issues and provide excellent Customer Satisfaction.
• Can configure any open source application on Linux / Unix
• Excellent analytical, oral, written, communication and problem solving skills and good Team Player.

TECHNICAL SKILLS:

Operating Systems: Sun Solaris 8/9/10, Linux (RedHat 5/6/7, Suse 9/10, 11, 12), IBM AIX 6.1 5.3, 5.2, 5.1, HP-UX 11.0, Windows 2008, 2008 R2/2012.

Hardware: HP PROLIANT DL360, DL360 G3, DL 385; SUN 420R, SUN BLADE 1000, 1500; SUN E250/RACK, E450, E450R, DELL 4500, 6650; DELL POWEREDGE 4400, 6300, 6400, 6850, 750; DELL PRECISION 420 TWR, 530, HP J6700 RACK SYSTEM, SUNFIRE 280r, 4800, V210, V440, V480

Software: VERITAS File System, Veritas storage foundation suite, Solaris Volume Manager, Veritas NetBackup, MS Office Suite, VMware, Ansible, Nagios, Maven, Vagrant, Git, SVN, Graylog

Languages/Scripting: Assembly x86, C, SQL, Java, Shell Programming, Python, PHP, Perl, XML,.

Networking: NIS, NFS, DNS, ALE, DHCP, Telnet, TCP/IP, SMTP, FTP, TFTP, UDP, SSH

Backup: tar, cpio, tape backup, MsBackup, Ufsdump, Ufsrestore

Databases: MS Access, Oracle 9i, 10g, 11g, MySQL.

Application Servers and Web Servers: LDAP Server, JBoss, Apache Tomcat 6.x, and IIS 3.0/4.0

Disk Arrays: Sun StorEdge 3130, 6320, 6120, A1000/D1000, EMC DMX 800 and 1000

Cloud: AWS, Google GCE, Azure, OpenStack

PROFESSIONAL EXPERIENCE:

Confidential, Allen, TX

Sr. Unix/Linux Administrator

Responsibilities:

• Installation, Configuration, and OS upgrades on RHEL 5.X/6.X/7.X, SUSE 11.X, 12.X.
• Implemented and administered VMware ESX 4.x 5.x and 6 for running the Windows, Centos, SUSE, Red Hat Linux and Ubuntu Servers on development and test servers.
• Responsible for managing Data Center and IT operations.
• Participated in Data Center migration.
• Installation, configuration and monitoring of monitoring tools like Nagios, HP SiteScope and Cacti.
• Monitored servers, switches, ports etc with Nagios monitoring tool.
• Integrating Nagios with other monitoring/alert solutions
• Administration of monitoring infrastructure consisting of Nagios server with Centreon as web interface for configuration and display of performance data.
• Administering Solaris 10 zones by creating whole root zones, deleting zones, installing several software needed by the application team on zones.
• Experience in configuring MIB using SNMP trap.
• Managing Monitoring solution using Nagios Environment.
• Responsible for configuring networking concepts like NIS, NFS, SAMBA, LDAP, SSH, SFTP, SNMP, DNS, DHCP, troubleshooting network problems such as TCP/IP, supporting users in solving their problems.
• Installation and configuration of atlassian products (jira, co13nfluence, crowd and Bamboo)
• Configuring, Managing and Scheduling CRONTABs for App Accounts and Backup management on a regular basis.
• Build, maintain, and configure AWS environments
• Installation and configuration of Subversion (SVN).
• Installed and Configured Hadoop Single and Multi node cluster
• Configuration Hadoop ecosystem components like Pig, Sqoop, Hive, HBase, Sqoop and Oozie
• Installed and configured multi-nodes fully distributed Hadoop cluster
• Capable of processing large sets of structured, semi-structured and unstructured data and supporting systems application architecture.
• Providing hardware architectural guidance, planning and estimating cluster capacity.
• Involved in Hadoop Cluster environment administration that includes adding and removing cluster nodes, cluster capacity planning, performance tuning, cluster Monitoring, Troubleshooting.
• Adding new nodes to an existing cluster, recovering from a Name Node failure.
• Decommissioning and commissioning the Node on running cluster.
• Installation of various Hadoop Ecosystems and Hadoop Daemons.
• Recovering from node failures and troubleshooting common Hadoop cluster issues.
• Installation of Apache, Weblogic and Tomcat Web servers.
• Handling tomcat applications performance issues.
• Installed and managed VMware ESX 4.5 hosts running RHEL 5, 6 versions.
• Administered VSphere and deployed several VMS based on the capacity consumption by the Host Groups.
• Installed and configured Splunk for all kind of Application, System logging so that various support team can get information online instead of combing the log files.
• Installed and configured Apache Web Server.
• Installation of Nagios network monitoring system for early warning detection of network outages for local network as well as remote sites.
• Updating monitoring parameter in Nagios with active and passive check.
• Configuring Monitoring rules for the server environment.
• Developed scripts for automating administration tasks like customizing user environment, and performance monitoring and tuning with nfsstat, netstat, iostat, and vmstat.
• Created Bash shell, Power shell and perl scripts to monitor system resources and system maintenance and performed administrative tasks such as System startup/shutdown and Backup strategy.
• Managed the User and Application Account creations, deletions, and setting up sudo access for DBA and application account access.
• Extensive experience in Installation and Configuration of Websphere application server
• Experience in Setting up of Nodes, Data Sources, Virtual Hosts, including planning installation and configuration of WebSphere Application Server.
• Experience with running SQL queries on Oracle and MySQL.
• Administered security, users, group administration and daily backup and restore operations, networking service, performance and resource monitoring and Performed disaster recovery management procedures.
• Administration responsibilities include user, group, disk, and security management.
• Involved in preparation of functional and system specifications. Estimated storage requirements for applications.
• Worked with DBA team for database performance issues, network related issues and with vendors for hardware related issues.
• Worked with DBAs on installation of RDBMS database, restoration and log generation.
• Configuring and troubleshooting LAN and TCP/IP issues.
• Managed shared NFS, mounting and un mounting NFS server, NFS client on remote machine, sharing remote file folder, starting and stopping the NFS services.
• RPM and YUM package installations, patch and other server management.
• Creating new file systems, monitoring disk usage, checking and backup of log files administration and monitoring the disk based file system.
• Troubleshooting hardware and replacement of failed components running on LINUX and SOLARIS environment, Performance tuning activities like allocation and monitoring of disk space using Disk Quota system.
• Configuration of Hardware and Software RAID. Disk replacement and File system recovery.

Environment: Red HatLinux5/6, IBM AIX, BMC Tools, NAGIOS, Korn Shell, Bash Scripting, Logical Volume Manager, web servers, LDAP directory, Active Directory, BEA Web logic servers, SAN Switches, Apache, Tomcat WebSphere, Web logic application server.

Confidential, Atlanta, GA

Sr. Unix/Linux Administrator

Responsibilities:

• Administration of RHEL 5/6 that includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
• Creating, cloning Linux virtual Machines, templates using VMware Virtual Client 3.5 and migrating servers between ESX hosts.
• Build, maintain, and configure AWS environments
• Installing Red Hat Linux using Kickstart and applying security policies for hardening the server based on the company policies.
• Data center Infrastructure upgrades, Application migration to new servers.
• Experience in Developing KORN, BASH and perl shell scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation.
• Installed and Configured JBOSS on Java Applications
• Administration, package installation, configuration of CentOS 5.
• Setup NFS Servers, Diskless clients and Auto clients and automated the file systems using direct and indirect maps. Also setup entries in /etc/exports and mounted the disks onto the client systems by adding entries to /etc. / FSTAB.
• Installing MySQL on Linux Server and securing installation.
• RPM and YUM package installations, patch and other server management.
• Creating new file systems, monitoring disk usage, checking and backup of log files administration and monitoring the disk based file system.
• Installation and configuration of Webserver (Apache 2.2.17), MySQL 5.5 and PHP in a LAMP stack.
• Configuring multipath, adding SAN and creating physical volumes, volume groups and logical volumes.
• Installation and troubleshooting of windows exchange server 2010.
• Extensive experience in Installation and Configuration of Websphere application server
• Experience in Setting up of Nodes, Data Sources, Virtual Hosts, including planning installation and configuration of WebSphere Application Server.
• Administering Solaris 10 zones by creating whole root zones, deleting zones, installing several software needed by the application team on zones.
• Installing and configuring Apache and supporting them on Linux production servers.
• Kernel compilation and patch up gradation on Linux servers.
• Installed and configured Oracle 10g/11g RAC high availability.
• Administration and setting up Oracle RAC on RHEL 5.x servers.
• Familiar in LDAP setup and administration.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as iptables, firewall, and TCP wrappers and NMAP.
• Developed automated processes that run daily to check disk usage and perform cleanup of file systems using shell scripting and CRONTABs.
• Configured Nagios from scratch and written custom scripts for monitoring.
• Added more than 2.5k servers in production using Nagios.
• Installation of Nagios network monitoring system for early warning detection of network outages for local network as well as remote sites.
• Updating monitoring parameter in Nagios with active and passive check.
• Trouble shooted many problems in Nagios.
• Creating and Managing Users / Group accounts and setup a user's work environment.
• Monitoring the File System, CPU load for better Performance and system performance parameters using iostat, vmstat and prstat.
• Monitoring system performance, tune-up kernel parameter, adding/ removing/ administering hosts, users, disks on DNS / NIS domain.
• Performed the configuration and administration of DNS, NFS, SAN, NIS and database files.
• Worked on making DNS entries to establish connection from server to DB2 database.
• Performed OS upgrades and Patch loading as and when required.
• Backing up and restoring files across the network.
• Installation of Apache, Weblogic and Tomcat Web servers.
• Handling tomcat applications performance issues.
• Creating SSL certificates for windows servers and Solaris/Linux Servers.
• Creating VM snapshots for test and deployment as well as in production change controlled release environment.
• Administered VSphere and deployed several VMS based on the capacity consumption by the Host Groups.
• Worked with the VMWARE team and ensured all the VMs are working without any performance issues.
• Installing and Managing Virtual Center 5.5.
• Test and install various patches (Fix Packs) on the servers to solve the problems encountered by the applications running on the servers.
• Configuration of Hardware and Software RAID. Disk replacement and File system recovery.
• Reducing the downtime/resolution time by pinpointing the errors and coordinating with development team and third party software providers
• Attend team meetings, change control meetings to update installation progress and upcoming changes in environment.

Environment: RHEL 5/6, Solaris 9/10, Apache 1.2/1.3/2.x, Oracle 11g/10g/9i, VM ESX 4.x /3.x., Nagios

Confidential, Erie, PA

Unix/Linux Administrator

Responsibilities:

• Administration of RHEL 5/6 that includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
• Creating, cloning Linux virtual Machines, templates using VMware Virtual Client 3.5 and migrating servers between ESX hosts.
• Responsible for managing Data Center and IT operations.
• Participated in Data Center migration.
• Working in AWS Cloud Environment like EC2 & EBS.
• Installing Red Hat Linux using Kickstart and applying security policies for hardening the server based on the company policies.
• Extensive experience in Installation and Configuration of Websphere application server
• Experience in Setting up of Nodes, Data Sources, Virtual Hosts, including planning installation and configuration of WebSphere Application Server.
• Experience in Developing KORN, BASH and power shell scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation.
• Configured Nagios from scratch and written custom scripts for monitoring.
• Managing Monitoring solution using Nagios Environment.
• Monitoring system performances using Nagios and managing network issues.
• Updating monitoring parameter in Nagios with active and passive check.
• Installed and configured Nagios plugins.
• Installed and Configured JBOSS on Java Applications
• Administration, package installation, configuration of CentOS 5/6.
• Installing MySQL on Linux Server and securing installation.
• Installation of Apache, Weblogic and Tomcat Web servers.
• Handling tomcat applications performance issues.
• RPM and YUM package installations, patch and other server management.
• Creating new file systems, monitoring disk usage, checking and backup of log files administration and monitoring the disk based file system.
• Installing and configuring Apache and supporting them on Linux production servers.
• Kernel compilation and patch up gradation on Linux servers.
• Installed and configured Oracle 10g/11g RAC high availability.
• Administration and setting up Oracle RAC on RHEL 5.x servers.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as iptables, firewall, and TCP wrappers and NMAP.
• Developed automated processes that run daily to check disk usage and perform cleanup of file systems using shell scripting and CRONTABs.
• Creating and Managing Users / Group accounts and setup a user's work environment.
• Monitoring the File System, CPU load for better Performance and system performance parameters using iostat, vmstat and prstat.
• Monitoring system performance, tune-up kernel parameter, adding/ removing/ administering hosts, users, disks on DNS / NIS domain.
• Performed OS upgrades and Patch loading as and when required.
• Backing up and restoring files across the network.
• Creating VM snapshots for test and deployment as well as in production change controlled release environment.
• Installing and Managing Virtual Center 5.5.
• Closely worked with development and QA teams.

Environment: RHEL 5/6, AWS EC2 & EBS, JBOSS,Weblogic,Apache 1.2/1.3/2.x, Oracle 11g/10g/9i, MySQL,VM ESX 4.x /3.x., Nagios

Confidential, Atlanta, GA

Unix/Linux Systems Administrator

Responsibilities:

• Installation, configuration and Operating System upgrade on, Red Hat Linux and Sun Solaris.
• Performed automated installations of Operating System using kick start for Red Hat Enterprise Linux 5/6 and Jumpstart for Solaris 9/10 Linux.
• Administrated server consolidation program through use of VMware ESX server and VMware Virtual Center
• Gathered VM requirements from the Performance Team, placed reservations and deployed Virtual Servers in Test and Production Environments.
• Experience in VMWARE ESXi 4/5 and vSphere and managed VM resource upgrades, Cold migration of VM from once vCenter to other.
• Handled and documented Cold Migration issues and IP, SAN, Network bandwidth and VLAN constraints.
• Performance Management & Tuning of RHEL.
• Responsible for multicasting of various components as a system administrator.
• Monitoring system resources, logs, disk usage, scheduling backups and restore
• Monitored servers, switches, ports etc with Nagios monitoring tool.
• Installation of Apache, Weblogic and Tomcat Web servers.
• Handling tomcat applications performance issues.
• Configuring Monitoring rules for the server environment.
• Set up Quotas for the user accounts & limiting the disk space usage.
• Configuring SUDO and granting root permission to users for performing certain activities.
• Upgrading RHEL 5.0 to RHEL 5.5 using live upgrade and manual upgrade.
• Installed and Configured Web logic 8.x, 9.x on Java Applications.
• Extensive use of LVM, creating Volume Groups, Logical volumes, and disk mirroring.
• Performance Management & Tuning of AIX 5.2/5.3 UNIX Kernel.
• Hands on experience on various cloud computing products such as Confidential Web Services EC2 and VPC.
• Removing Virtual Resource from the VIO Server and Decommissioning the VIO Client LPARS.
• Perform User Account management, data backups, and users’ logon support.
• Develop Shell scripts (Korn) for automating the batch jobs.
• Responsible for the upgrades to AIX and software packages and maintained them in accordance with established policies, procedures and service level agreements.
• Installed and Configure DNS, Websphere, DB2 Database and Tivoli storage manager.
• Work with DBAs on installation of DB2, restoration and performance tuning.
• Patched different software using RedHat Package Manager and YUM.
• Attend team meetings, change control meetings to update installation progress and upcoming changes in environment.

Environment: RHEL 5/6, AWS EC2 & VPC, DNS,Websphere, DB2, Tivoli storage manager,VM ESX 4.x /3.x., Nagios

Confidential

System Administrator

Responsibilities:

• Installation, Configuration, and OS upgrades on Linux and Windows envirnoments.
• Implemented and administered VMware ESX 4.x 5.x and 6 for running the Windows, Centos, SUSE, Red Hat Linux and Ubuntu Servers on development and test servers.
• Monitored servers, switches, ports etc with Nagios monitoring tool.
• Installed and configured Apache Web Server.
• Installation of Nagios network monitoring system for early warning detection of network outages for local network as well as remote sites.
• Installing, managing, migrating various models of printers on Windows x86 & x64 servers.
• Active Directory Services; Active Directory Group Policy Objects (GPO); Group Policy Management Console (GPMC); DHCP; and DNS.
• Experience with running SQL queries on Oracle and MySQL.
• Administered security, users, group administration and daily backup and restore operations, networking service, performance and resource monitoring and Performed disaster recovery management procedures.
• Administration responsibilities include user, group, disk, and security management.
• Involved in preparation of functional and system specifications. Estimated storage requirements for applications.
• Configuring and troubleshooting LAN and TCP/IP issues.
• Creating new file systems, monitoring disk usage, checking and backup of log files administration and monitoring the disk based file system.
• Troubleshooting hardware and replacement of failed components running on LINUX and WINDOWS environment.
• Group Policy Object administration, troubleshooting and management.
• Configuration of Hardware and Software RAID. Disk replacement and File system recovery.