PROFESSIONAL SUMMARY

• Over Seven years of IT experience in Redhat Linux, SUSE Linux, Centos, Ubuntu and AIX administration with 3 years of emphasis in DevOps Environment.
• Installation, configuration, administration, troubleshoot, tuning, security, backup, recovery and upgrades of IBM AIX 4.3/5.1/5.2/5.3/6.1/6.2 , Win NT/2000/2003 Server, Linux (Red Hat & SuSe).
• Implemented Kickstart for Redhat automated installations on VMWARE.
• Worked extensively on DevOps environment creating strategy in a mix environment of Redhat, CentOS servers along with AWS cloud.
• Working knowledge of various AWS technologies like Elastic Load Balancer, Elastic IP’s S3, Security Groups.
• Created Instances and managed Application in AWS cloud.
• Experienced working on various DevOps tools like SVN GIT, Jenkins, Puppet, Docker, Maven, ANT.
• Automated various build and deployment using Ant and Maven.
• Implemented Continuous Integration (CI) using tools such as Jenkins.
• Experienced on configuration and managing Puppet Master Server, and also experience in updating and creating modules and pushing them to Puppet Client
• Administered and Implemented Puppet Modules and Manifests to automate broad range of server configuration and deployment of application.
• Configuration of Volume groups, logical volumes and file systems on Linux.
• Managed LVM and file system SRC and paging space management restore and availability.
• Performed new disks addition, formatting, partitioning, disk space allocation, monitoring system performance, system tuning, server hardening and crash recovery issues.
• Package Management like Install, remove, update and querying packages using RPM tool.
• Daily Production support like daily log checking, backup/recovery procedures, disaster recovery, periodic maintenance and off - hours problem support.
• Administered user and password management, allocating quotas to users as well as system startup and shutdown, monitoring and portioning.
• Strong Knowledge of Veritas Cluster Server (VCS) and Platform Cluster Manager (PCM) to manage High-Availability and High-Performance Clusters.
• Proficient at configuring and maintaining NFS, DNS, NIS/NIS+, DHCP, SMTP
• Efficient at Perl/Korn Shell, Ruby, Python scripting.
• Experienced in SAN and NAS Management (EMC, IBM etc.)
• Define system requirements, recommend solutions, analyze capacity and modify appropriately.
• Proficient at monitoring and altering file system usage, system and hardware process failures( Using Nagios)
• Hands on experience on automation scripting.
• Submitted and managed parallel, serial and interactive tasks
• Worked on extensive documentation and 24X7 support role.

TECHNICAL SKILLS:

Operating Systems: Linux (Red Hat 4.x, 5.x, 6.x ), CentOS 5/6, Fedora, Ubuntu, Windows NT4.0, Windows 98/2000/2003/ XP/VISTA, Open VMS

Hardware: HP DL360, DL385 G8/G7/G6/G5, Sun Fire Servers - E25k,E15k,12k, E280R, E480R, V240, 420R, V440, V480, V490, V880,V890 4800, E6900 and E2900. IBM - F-SERIES AND P-SERIES, IBM RS6000. Data Centre Servers - E250, E450, E3000 and E3500, M4000,T2000, T5120. Storage- EMC, HP, NetApps

Tools: Nagios, Zabbix, Cacti, Eucalyptus, Openstack, F5, HP SIM, Puppet, Akamai, OSSEC, IpTables, Redhat Cluster, Aicache, Memcached

Devops: Puppet, Chef, SVN, GIT, Jenkins, Docker, Ant, Ansible.

Languages: Shell scripting, Perl, Python

Databases: Oracle 11g/10g/9/8, MYSQL, Mongo

Networking: TCP/IP, DNS, NFS, NIS, SSH, DHCP, Cisco Routers / Switches and LAN

Web/Applications Technologies: Apache, Tomcat, Jboss

PROFESSIONAL EXPERIENCE

Confidential, El Segundo, CA

Linux/UNIX Systems Administrator/Engineer

• Installed, configured, maintained and enhanced operating system and system support software/hardware Enterprise Linux 6.x, 5.x, 4.x,Ubuntu, Solaris, troubleshooting hardware, operating system, applications & network problems and performance issues.
• Installed and configured Redhat Satellite server for package transfer across servers, to store client’s system profile and to control other servers in the network
• Installed and configured various flavors of Linux like Red hat, SuSEand Ubuntu.
• Monitored trouble ticket queue to attend user and system calls, participated in team meetings, change control meetings to update installation progress, and for upcoming changes.
• Implemented AWS solutions using EC2, S3, RDS, Elastic Load Balance, Auto scaling, and EC2 instances.
• Installed, configured and Administered Jenkins; Continuous Integration tool
• Created multiple instances in AWS cloud and monitored scalable infrastructure in AWS.
• Worked on migration of application from physical to AWS cloud.
• Installed and configured Nagios and used Nagios of Monitoring
• Used GIT and SVN as a version control tools.
• Installed and configured configuration management tool Puppet.
• Installed, configured and managed Puppet Master/Agent.
• Created Puppet modules to manage and automate installation process across the infrastructure.
• Created Puppet Manifests to manage configuration files for Multiple applications
• Deployed patches for Linux and application servers, Red Hat Linux Kernel Tuning.
• Network trouble shooting using 'netstat', 'ifconfig', 'tcpdump', ‘vmstat’, ‘iostat’ and others.
• Installed and configured DHCP, DNS, web (Apache,IIS), mail (SMTP, IMAP, POP3), and file servers on AIX and Red Hat Enterprise Linux servers.
• Worked on Veritas Cluster Server (VCS) and Platform Cluster Manager (PCM) to manage High-Availability and High-Performance Clusters.
• Facilitate load balancing and building vservers with high availability and using and creating distribution groups
• Monitored the whole Exalogic infrastructure.
• Configured kickstart server and updating/applying patches to the servers using Redhat Satellite server
• Installed and administered Red hat using KVM, Xen based hypervisor.
• Experienced in installing and managing NFS, FTP and Samba for file sharing.
• Wrote Bash, Shell, Ruby and Python Scripts.
• Worked on Installation and Configuration of web and application servers like Tomcat, Apache, WebLogic, JAVA, and J2EE.
• Day to day tasks in Red Hat Linux including upgrading rpms, kernel, HBA driver, configuring SAN Disks, multipathing and LVM file system.
• Installation and administration of Veritas Cluster Manager (VCM), Veritas Volume Manager (VVM).
• Performed system administration tasks like system monitoring, performance usage, network support, and user support.
• Created and scheduled cron tasks for file update, system back up or removal of unnecessary files.
• Deployed latest patches for Linux and Application servers, and performed Red Hat Linux Kernel Tuning.
• Linux Kernel, memory upgrades and swaps area and performed Red Hat Linux kick start installations.

Environment: REDHAT 6.x,5.x, Ubuntu, CentOS, SMSAP, TSM, Cisco Switches, P6/P7 hardware, HACMP Clusters, Puppet, AWS, GIT, SVN, Jenkins, PowerHA, SAN, NIM, IBM HTTP server, WAS 4.0/5.0, VERITAS, DB2, Oracle, PeopleSoft, Shell scripts, Ruby Python.

Confidential, Phoenix, AZ

Linux/UNIX Systems Administrator

Responsibilities:

• Installation/Maintenance of Hardware/Software in Production, Development & Test Environment as an integral part of the Unix/Linux (RHEL 5.x / 6.2,SuSE/AIX) Support team.
• Worked on installation, configuration and maintenance of Red Hat, Cent OS, UBUNTU, SUSE, AIX, Solaris and Windows servers.
• Administered Jenkins for managing weekly build, test and deploy cycle.
• Assisted team with automated centralized configuration using puppet.
• Designed and implemented fully automated server build management monitoring and deployment using Puppet.
• Wrote Puppet modules to manage configuration and automate the installation process.
• Wrote multiple manifests and customized facts for efficient management of the puppet clients.
• Worked with Sub versioning tools like SVN and GIT
• Configured and automated Jenkins Build jobs for Continuous Integration.
• Managed Applications in AWS Cloud and have created Instances as per the client requirement.
• Installed and configured Redhat Satellite server for package transfer across servers, to store client’s system profile and to control other servers in the network.
• Experience with kick start installation on multiple servers.
• Implemented day-to-day tasks in RedHat Linux that include upgrading rpms, kernel, HBA driver, configuring SAN Disks, multipathing and LVM file system
• Installed, configured, maintained and administered the network servers DNS, DHCP, NIS, NFS, SENDMAIL.
• Experience with installation and maintenance of NFS, FTP and Samba for file sharing.
• Built Linux servers using VMware ESX and VMware ESXi.
• Experience in creating Control channel, Shared Ethernet adapter and configuring them on the network.
• Set up repositories for Redhat, implemented YUM, SSH and other security tools.
• Daily system monitoring using commands like vmstat, iostat, top, tcpdump, defrags and so on for efficient server operation.
• Package management like Install, remove and update and querying packages using RPM tool.
• Used Samba to print and share files in mixed Environment.
• Experience with installation of Tomcat and Apache Web Servers on Red Hat Production Servers.
• Involved in extensive trouble shooting the issues by finding out root causes, analyzing core dumps and resolved system crashes.
• Experienced with user account, group account creation, management and allocation of quotas for users and groups as instructed.
• Provided 24/7 on call supports in debugging and fixing issues related to Redhat and SuSE Linux.

Environment: Linux (RHEL 4.x &5.x), AIX 6.1, Oracle 11/10g, SUN Servers, SUN Fires, Samba, Perl, Shell Scripting, Bash, SUSE 11/10Veritas Volume Manager (VVM), F5 Load balancers, SiteMinder5.5/4.5, EMC Storage SAN, Veritas Cluster Server (VCS).

Confidential, Richmond, VA

Systems Engineer

Responsibilities:

• Installation, Configuration and upgrade of RedHat Linux 4/5/6.2, Suse Linux, Ubuntu.
• Performed setup and configuration of Install Server, Configuration Server and Boot Server for Kickstart process.
• Good experience in installation, configuration and maintenance of Linux.
• Involved with Devops team working on various tools like Puppet, Jenkins, SVN and GIT.
• Assisted Devops Team with installation and configuration of Puppet.
• Involved in writing puppet modules and Manifests as per the client requirement for automation of various services.
• Assist team with migration from Physical to AWS cloud.
• Experience in configuring and trouble shooting of Kickstart services on multiple servers.
• Experience in System monitoring, Performance tuning and OS hardening to secure the Solaris environment. 
• Administered tasks like user and password management, allocating quotas to users as well as system startup and shutdown, monitoring and partitioning.
• Creation of Backup accounts for new users and Deletion of accounts for retired or unavailable users.
• Experience in configuration of NFS and Naming services like NIS and DNS.
• Implemented file sharing on the network by configuring NFS on the system to share essential resources.
• Implementation of RAID techniques and creation of Disk groups and volumes using Veritas Volume Manager.
• Patch and package administration for installation of patches as per the company policy and installation of packaged application.
• Production support of Apache including installation, configuration, management and troubleshooting
• Having production experience supporting and deploying to web application servers such as BEA WebLogic, Red Hat JBoss, Apache, Tomcat, and Apache HTTPD servers.
• Installation, Configuration and Administration of Weblogic, Websphere and Apache Servers in Linux.
• Worked on VMWare for testing various applications on different operating system.
• Experience of Storage Area Network/SAN.
• Implemented configuration management with Puppet.
• Implementation of RAID techniques and creation of Disk groups and volumes using Veritas Volume Manager.
• Created System Disk Partition, Mirroring root disk drive using VERITAS Volume Manager.
• Maintained and recycled backup Tapes upon request from company.
• Configured VERITAS Cluster Server (VCS), fail over test of VCS groups, added/ modified VCS resources such as File Systems.

Environment: Red Hat Linux 4.0,5.0, AS ES, AIX 6.1,4.3,5.1,5.2,5.3, HP-DL585, HACMP 5.5,4.2.x,4.3,4.3.1,4.4, Veritas Netbackup, SAN Storage, 4.5.5, Puppet, Jenkins, AWS, IBM-z/VM, Oracle 9i/10g, Samba, NT/2000 Server, Websphere, Web Logic 8.1, VMware ESX 2.x, LPAR, DLPAR, Tomcat 3.x,4.x,5.x,6.x Apache Server 1.x,2.x, Korn, Bash.

Confidential, Philadelphia, PA

Systems Administrator/Engineer

Responsibilities:

• Installation, Configuration & Upgrade of Redhat Linux
• Used Kickstart for Red Hat for automated installations and VMWARE.
• Solved real time issues with the help of engineers and co-workers.
• Involved in decommissioning servers project as per the company procedures and update the hardware inventory database.
• Installed, Upgrade and Manage packages through RPM and also take care of dependencies.
• Installed and maintain puppet-based configuration management system
• Deployed Puppet, Puppet Dashboard, and PuppetDB for configuration management to existing infrastructure.
• Deployed m-collective for orchestration.
• Implemented configuration management with Puppet.
• Replicated several Unix/Linux servers depending upon the requirement and availability
• Configured kickstart server and updating/applying patches to the servers using Redhat Satellite server.
• Installing, administering Redhat using Xen, KVM based hypervisors.
• Installed RHEL 5.x on x86 servers.
• Installed, configured and maintained Redhat Satellite Servers for different applications.
• Performed Linux kernel, memory upgrades and undertook Red hat Linux Kickstart installations.
• Involved in development, user acceptance, and performance testing, production & disaster recovery server.
• Created users, manage user permissions, maintain User & File System quota on Redhat Linux
• Installed and configured VERITAS Volume Manager, Solaris Volume Manager.
• Installation and configuration of Logical Volume Manager on HP-UX and Linux.
• Very good working experience on Redhat Satellite Server upgrading and patching.
• Building Linux servers by using VMware ESX 3.0 and also involved in channels and pushing the packages in Redhat Satellite Server.
• Implemented upgrade of servers using Redhat Satellite Server.
• Monitored system activities and fine-tuned system parameters and configurations to optimize performance and ensure security of systems.
• Backup management and recovery policies using VERITAS Net-Backup.
• Daily task include growing, creating of VERITAS volumes and file system on San storages.
• Implemented SUDO,SSH and other security tools and implemented security compliance.
• Installed VMware ESX server and configured Solaris 9/10/ Red Hat Linux 5.x / Windows 2003 virtual machines for various applications.
• Kernel parameter changed in Solaris and Linux environment.
• Created User, Groups. File Systems per database requirement.
• Worked on NIS, NIS+ to LDAP transition.
• Creation and scheduling of Cron Jobs such as for Backup, System Monitoring and removal of unnecessary files.
• Worked with other IT teams, customers (users), and other managers in helping build and implement systems and standards.
• Planning and implemented Disaster recovery sites from the scratch.
• Involved in Disaster recovery testing every quarter.
• Develop, Maintain, update various script for services (start, stop, restart, recycle, and cron jobs) UNIX based Korn shell, Bash.
• Troubleshooting various problems, logging call with vendors.
• Possess creative problem solving & sharp analytical skills.
• Supported 24/7 highly available critical system and involved in on-call pager rotation for production support.
• Demonstrated skill in supporting end users and proven ability to plan, organize and work as a member of a technical project team, both in small groups as well as large corporate areas.

Environment: Red Hat Linux (RHEL 5/6), Logical Volume Manager, Veritas Cluster Server, Global File System, Red Hat Cluster Servers, Oracle,mysql,, AIX 5.3L,Windows, Veritas Volume Manager, Veritas Net backup, Ksh/Perl programming, DNS, NIS, NFS, Apache, Tomcat, CA IT Client Manager (CA ITCM), CA Patch Manager, CA Service Desk Manager, Varnish servers 2.1.4, 2.1.5,windows server 2000,2003, 2008, VMware ESX 2.x,HP-UX.

Confidential, Irving, TX

UNIX/ LINUX Administrator

Responsibilities:

• Installing, configuring and upgrading Linux (Primarily REDHAT and UBUNTU) and Windows Servers.
• Installing and partitioning disk drives. Creating, mounting and maintaining file systems to ensure access to system, application and user data.
• Data consistency of file system using fsck and other utility.
• Co-coordinating with the customers vendors for any system up gradation and giving the exact procedure to follow up.
• Scheduling the daily/weekly/monthly backups.
• Amended existing scripts as well as wrote new Bourne and Korn scripts related to recurring administration jobs.
• Patching up the system to the latest version as per the recommendations.
• Monitor the health of the servers, Operating system, database and the network.
• Maintenance of Hard disks (Formatting and Setup, Repair from crashes).
• Installing & administering NFS services using automounter.
• Regular disk management like adding/replacing hard drives on existing servers/workstations, partitioning according to requirements, creating new file systems or growing existing one over the hard drives and managing file systems.
• Creating users, assigning groups and home directories, setting quota and permissions; administering file systems and recognizing file access problems.
• Maintaining appropriate file and system security, monitoring and controlling system access, changing permission, ownership of files and directories, maintaining passwords, assigning special privileges to selected users and controlling file access, monitoring status of process in order to increase the system efficiency, scheduling system related and cron jobs.
• Build and maintain windows 2000 and 2005 servers.
• Managed windows servers, configured domain, active directory; created users and groups; assigned permission to the groups on the folders.
• Setup LANs and WLANs; Troubleshoot network problems. Configure routers and access points.
• Installed NIM, set up NIM servers, clients, defined the resources, alternate disk migration with NIM.
• Worked on migrating from Windows 2000 to 2005.
• Allocated disk space using EMC disk storage.

Environment: RedHat Linux 3.9/4.5-4.7, Windows 2000/NT 4.0, Apache 1.3.36, 1.2, 2.0, IIS 4.0 and Oracle 8i, bash/ksh shell, Samba, DNS, APACHE, MAIL, DHCP & FT

Confidential

UNIX/LINUX Administrator

Responsibilities:

• Installed, administered and maintained RHEL, CentOS, Ubuntu SLES 9,10 servers.
• Responsible for AIX v5.x system administration tools, commands and utilities and
• Responsible for Installation, Configuration Management, Maintenance and Systems Development of AIX Systems.
• Configure File Systems and administer using Network File Services (NFS) and Network Information Service (NIS).
• Installed, configured and maintained the Linux Servers, NIS, DNS, Mailing list, Send mail, apache, ftp and sshd.
• Worked with DBAs on installation of RDBMS database, restoration and log generation.
• Extensive experience in UNIX performance Tuning and UNIX security fundamentals.
• Experience in logical volume management and disk management.
• Responsible for taking system backups mksysb, mkcd, savevg and savevgcd also make system backup through NIM, making archives of files and folders.
• Responsible for NIM installation, setting up NIM servers, clients, define the resources, Alternate Disk Migration with NIM.
• Maintain User profile, group creation and X-term settings.
• Responsible for determining hardware and compatibility requirements for installation of application software and different tools for OPTIMIZATION.
• Performed TCP/IP, DNS and DHCP administration.
• Performed all aspects of UNIX server administration including installing and maintaining the operating system software, performance monitoring, problem analysis and resolution and production support.
• Worked on troubled shooting in GPFS nodes.
• Enabled security using the LDAP registry by assigning different roles to different users and groups.
• Performed User Account management, data backups, and users’ logon support.
• Involved in trouble shooting and performance tuning using Tivoli Performance Viewer.
• Configured SSL and created SSL Certificates using key management utilities to implement security for the communication between web server and the Application Server.
• Performed TCP/IP, DNS, and DHCP administration.
• Involved in deploying the EAR files and scripting automated deployment of the applications.
• Provided 24x7 support on shift rotation basis.
• Supported Workload management (WLM), Micro-Partitioning, clustering and load balancing.
• Experienced shell scripting to automate administration jobs including backups for Websphere administration repository.
• Installed Power Path and administered EMC storage.
• Installed, configured and troubleshoot IBM Websphere MQ Series 5.1 /5.2 /5.3, Weblogic 8.1 SP 5, 9.2.
• Performed routine LVM tasks like replacing failed drives, adding new volume groups, extending volume groups/ LVM /file system, exporting and importing volume group for hardware migration.
• Experience in other system administration tasks as system monitoring, performance usage, network support, and user support.
• Managed cron jobs, batch processing and job scheduling.
• Installed and configured SAMBA server for Windows and Linux connectivity.

Environment: Linux (RHEL 4.8 & 5.1-5.4), CentOS (4.7-4.8 & 5.1-5.3), Ubuntu, Oracle 11/10g, HP Servers, HP SIM, Cacti, Zabbix, OSSEC, Centreon/Nagios Monitoring, Apache, Tomcat, Python, Shell Scripting, Bash, RedHat Cluster, F5 Load balancers, Net Apps, LDAP, EMC Storage SAN.