SUMMARY

• Around 7 years of experience in DevOps/Linux System Administrator.
• Experience in Red Hat Linux 4.0, 5.0, 6.0; Sun Solaris 8, 9 &10 and Windows Server 2003, 2008 and 2012.
• Knowledge of Large - scale Linux Server deployment methods, Kernel compilation and configuration, performance monitoring and tuning.
• Excellent experience in building and deploying Red Hat KickStart, PXE, and NFS Servers.
• Experienced on Clustering, Load Balancing techniques to ensure High Availability and Disaster Recovery.
• Excellent Virtualization experience with VMware Technologies, KVM, and OpenStack.
• Excellent scripting skill in Shell (BASH) and Perl.
• Expertise in Configuring and troubleshooting various OS, Networking, & Hardware related issues and performing preventive maintenance.
• Hands on experience in various web servers like Apache, Tomcat, JBoss, and Apache with Tomcat.
• Experienced with continuous integration, and lean/agile methodology. Worked with tools such as Jenkins, Hudson, Maven, and AWS.
• Managed cloud based backing using AWS, wrote automation scripts using Shell scripting, and configured Puppet.
• Hands-on experience in various monitoring tool like Nagios, Tivol Cacti, Wily.
• Experience with deploying and supporting operations of applications on the LAMP Stack.
• Strong understanding of advance TCP/IP, UDP, IPv4, IPv4, Subnetting, IPv6.
• Excellent experience with hardening OS security, software and hardware firewalls.
• Hands-on experience with, HP, Bell, IBM, SUN blade and rack servers.
• Strong Server build skill and setting up client/server services like NFS, NIS, DNS, DHCP, SMTP, POP3, HTTP/HTTPS, SSH, LDAP, VNC, Samba, Sendmail, Postfix, Qmail etc
• Hands-on experience with VCS, Veritas Net Backup, Veritas Volume Manager, Puppet.
• Experienced with Oracle administration, performance tuning and troubleshooting issues.
• Knowledge on migration projects and capacity management software.
• Knowledge on SAN of EMC Symmetrix, CLARiiON CX300 Storage Arrays and Dell Equalogic storage.
• Experience on WebSphere Application Server ND 6/7/8 and IBM Sterling Commerce.
• Experience of working in Data centers with 24x7 Production and On-Call Environments.

TECHNICAL SKILLS

Operating Systems: Linux (RHEL, Ubuntu, SLES), FreeBSD, HP-UX, Open Solaris, AIX, MS Windows Server 2003, 2008, 2012.

Network Protocols: TCP/IP DNS, DHCP, LDAP, FTP, VPN, VTP (VLAN), SNMP, SMTP, IPv4, IPv6, RIPv2, OSPF, BGP, EIGRP, Frame Relay.

Scripting: Shell (BASH), Pearl, Python.

Programming: Java, C/C++, VB.

Virtualization: VMware, KVM, JVM, LDOM (Sun’s virtualization technology).

Clusters: Red Hat Cluster, VCS and Conga.

Database: Oracle, Sql Server, MySql, PostgreSQL.

PROFESSIONAL EXPERIENCE

Confidential, Leawood, KS

DevOps/Linux System Administrator

Environment: Red Hat Enterprise Linux 5/6, Sun Solaris 8/9/10, AWS, Oracle Enterprise Linux 6, Windows 2012 server, AppDynamics, Nagios, Wiley, Oracle 12c, HP UX, IBM AIX, Apache, Oracle RAC/ASM, WebSphere Application Server ND, VMware ESXi, Puppet, Maven, Hudson, Load Balancer F5 and A10.

Responsibilities:

• Building and supporting Red Hat Linux 5, 6, Solaris, Windows servers for Enterprise Preference Management System project.
• Configured Kickstart files, installed RPMs, and Packages.
• Write shell scripts to automate the task and monitor the servers and services.
• Worked with monitoring tools such as Wily, Nagios, Icingia and OpenNMS.
• Worked on Veritas Volume Manager and LVM to manage file system.
• Providing administration and troubleshooting user related problems.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Migrated the physical Linux/Windows Servers to virtual servers with all set of services configured.
• Maintenance of continuous integration based on Maven and Hudson for continuous integration.
• Performed tracking of file changes efficiently using GIT.
• Performed cold and hot migration of VMware’s vSphere with vMotion.
• Performed patching in VMWare ESXi with related build number.
• Configured puppet and designed manifest to monitor client servers.
• Migrated the manual jobs to self-executing cron jobs on Physical/Virtual Servers.
• Worked on Network-attached storage (NAS) and Storage Area Networks (SAN) of NetApp Storage provisioning NFS, LUN and CIFS Shares.
• Automated the backup process to the disaster recovery centers using ssh keys.
• Worked on building Linux systems for configuration of Data warehouse.
• Worked on SQL queries to extract data from transactional database.
• Explore kernel modules and variants, tune kernel parameters, and manage devices, and monitor processes and resources during configuration of warehouse jobs.
• Configured dynamic and static network settings for IPv4 and filter packets, Review file system management concepts, removable media and configure NFS shares with autofs.
• Configuration and deployment of Nagios monitoring system for managing all the Linux warehouse systems.
• Configured and managed Apache Web Server on Linux for web based applications using REST/SOAP, Apache and Websphere.
• Performed patching, error analysis and recovery, documentation and procedures required for reference.
• Worked on Network configuration of Redhat servers and firewall configurations for the warehouse environment.
• Worked with Red Hat Package Manager (RPM), YUM, YAST and Make.

Confidential, Colorado Spring, CO

Linux System Administrator

Environment: Red Hat Enterprise Linux 5/6, Sun Solaris 8/9/10, Windows 2003 server, Veritas Cluster Server, Veritas Volume Manager, Oracle 11g, HP UX, IBM AIX, Apache, Oracle RAC/ASM, Puppet.

Responsibilities:

• Installed, administered and managed Red Hat Linux, SLES, Solaris, HP-UX and AIX servers.
• Managed and upgraded UNIX’s server services such as Bind DNS, Postfix, Apache web server, Tomcat, MYSQL.
• Developed shell scripts to automate the system management functions and system backup.
• Installed SUN, HP, IBM server’s hardware components.
• Set up LDAP and administration.
• Performed PXE network installations to install Red Hat Linux in Dell servers.
• Performed installation of new software packages, patches and security updates and updated server’s firmware (BIOS) as required and maintained server’s security from external attacks.
• Performed configuration, deployment and continuous integration on servers.
• Configured KVM, Kernel based Virtual Machine, for Linux.
• Worked on Open Source Development using Vim.
• Implemented central authentication system using NIS server.
• Performed user and group administration, UNIX tools installation and configuration.
• Worked with Veritas Cluster Suite, Veritas Net Backup (5.1) and Veritas Volume manager.
• Installed and configured VMWare ESX server on HP Blade servers.
• Creating and cloning virtual machines in VMware environment using Virtual Infrastructure client and Vsphere.
• Responsible for troubleshooting various networking and system related issues with UNIX server’s application and hardware.
• Responsible for monitoring various servers’ performance ensuring security and stability with the help of available UNIX utilities.

Confidential, Downey, CA

Linux System Administrator

Environment: s: Red Hat Enterprise Linux 4/5, Fedora core 7, Windows 2003 server, Oracle 10g, Apache, Squid, BIND, Sendmail, MS Windows 98/2000/NT/XP, Oracle RAC/ASM, VMware ESX.

Responsibilities:

• Configured Kickstart files, installed RPMs, & Packages and wrote scripts for Opsware, Installing Patches.
• Created Users and NFS sharing & Samba sharing, EMC Agents Deployment on the Servers.
• Installed Oracle 9i on Linux and did basic configuration. Worked closely with Oracle DBAs database configurations.
• Installed Oracle 9i client on various window XP/98 servers.
• Responsible for Monitoring Tools deployment and Script Development for any ongoing projects.
• Configured FTP, sFTP, SSH, iptables, Samba, Telnet and Power term for the servers.
• Created and maintained users, roles, permissions and enable quota for the users.
• Configured storage using Logical Volume Manager (LVM). Extending Volumes with LVM. Implemented RAID configuration for redundancy.
• Used LVM to configure volume group, logical and physical partitions and importing new physical volumes.
• Worked on Brocade SAN Switch and EMC Symmetrix on SAN and NAS respectively.
• Used crontab to backup and update patches.
• Fine tuning of systems using performance monitoring tools, i.e. a couple of servers need additional memory due to constant page in, page out, values are non-zeros (vmstat).
• Downloaded and installed MS SQL, Oracle 10g. Designed and created a database structure and provided user access to the database.
• Helped DBAs to tune database using OS level parameters like Semaphores and Shared memory Segments.
• Server Builds for VMware section and Normal Build of AS4 /AS3 /AS 2.1 EL 3 /4.

Confidential, Omaha, NE

Linux System Administrator

Environment: Red Hat Linux 4.x/5.x, Solaris 8/9/10, Veritas Foundation Suite, HP UX, IBM AIX, Veritas Cluster, Oracle ASM, WebSphere, Pearl.

Responsibilities:

• Automated installation of Linux servers using Kickstart and Installation of Solaris using Flash, live upgrades and Jumpstart Servers
• Creating and managing file systems, Creating and managing Logical volumes in Linux and VERITAS Volume manager in Solaris & Linux.
• Installation of patches and packages using RPM and YUM in Red hat Linux and Suse Linux and also using patchadd and pkgadd in Solaris 10 Operating System.
• Usage of Service Management Facility for enabling, disabling and also troubleshooting services in maintenance mode.
• Experience with configuring and Installing Zones for running applications in different zones in Solaris 10.
• SAN and iSCSI disk Configuration in Linux.
• Worked on SAN and storage technologies including EMC Arrays and IBM Arrays.
• Usage of SAN topology, fiber channel and Multipathing.
• Filtered the access using Iptables.
• Modified Kernel parameters to improve the server performance in both Solaris and Linux.
• Provided Statistics on Hard Disk Usage.
• Implemented and administered High Availability Cluster (RedHat Cluster Suite / Veritas Cluster), failover scenarios, and load balance.