PROFESSIONAL SUMMARY:

• Over 9+ years of industrial experience as a Linux Administrator in system administration in Red Hat Enterprise Linux 5.x/6.x/7, Cent OS & Fedora and Production Support of various applications in Red Hat Enterprise Linux, and Windows environment.
• Experience in design a small VM thru Linux enterprise application, deploying physical or virtual server, building AWS virtual server, upgrading OS on physical or VMware system administration (vSphere 5.X/6.X), Diagnose and decommissioning of servers.
• Experience with Active Directory, Installed Cassandra CFengine, created new LVM filesystems, extending filesystems with LVM on Linux, Patching using RHN satelite, RAID, Global File System clustering NetBackup client install in Linux, Root password changing - PROD
• Experienced in configuring and managed configure management tool CHEF/Puppet/CFengine/Ansible and experience in creating servers, uploading to enterprise Chef from work station and bootstrapping nodes.
• Extensively worked under the Devops environment using the Configuration Management Tool such as CHEF / PUPPET open software for the automation of several processes. Tested the code using Test kitchen, vagrant on Ubuntu platform
• Experience in Installing and configuring Apache/Tomcat/Java/MySQL/Alfresco/Redmine/Postfix, DNS/bind/named, NTPD, SSH, LVM, multipath, Samba/CIFS. Worked on configuring the Linux machines through Kickstart (Red Hat Linux) program for Host and Network based Installations.
• Experienced in managing users and groups and assigning file access privileges, ACLs, changing ownerships of users and groups using chown, chgrp commands, modifying the file permissions using chmod, SUID, SGID, and Sticky bit commands per the requirement.
• Experienced in configuration and maintenance of common Linux services such as Tomcat, Apache, MySQL, NFS, FTP, Postfix, TCP/IP, UDP,LDAP, DHCP, DNS BIND, HTTP, HTTPS, SSH, IP tables and firewall etc.
• Experience in VERITAS Volume manager (VxVM), Mirroring, and striping, Parity, New File Systems, Mounting and Un mounting File Systems Also Back-up management using normal back-up tape drives, manual commands (tar, scp, cpio, dd etc.), VERITAS Net Backup and Commvault.
• Strong understanding in writing the automation of processes using the shell script with bash and Python.
• Worked in physical, virtual and Devops environments with several teams and contributed in user and group management, data management, network management, system and server administration tasks etc.
• Profound Knowledge in cloud based Infrastructure services like Amazon Web Services (AWS), and Containers like Docker.
• Experience in Package management using RPM, YUM and UP2DATE in Red Hat Linux and utilities like nmap, tcpdump, and Wireshark.
• Experience in migrating UFS root file system to ZFS root file system using Live Upgrade.
• Efficient in installing, configuring and implementing the RAID technologies using various tools like Logical volume manager and File System, virtualization such as Hyper-V & OVM, load balance devices F5 Big-IP, Exposed to work on central remote printer services GALAXY using CUPS.

TECHNICAL SKILLS:

Application Servers / Web Servers: Apache Tomcat/ JBoss Enterprise Applicaion/ Glassfish/Weblogic/ IBM WebSphere ND / IBM MQ, IBMHTTPServer / Apache/ IIS / SunOne Web Server/Samba, Tivoli (TSM), Symantec Net Backup, VERITAS Volume Manager

Operating Systems: Red Hat Linux / Suse Linux /OS/390, Sun Solaris / IBM AIX and Windows 2003/2008/2000/ NT Server.

Directory Servers: Tivoli Directory Server 6.1/6.0/5.2, Sun Java System Directory Server v5.2, Microsoft Active Directory Server 2008/2003/2000.

Languages: C, C++, JAVA, SQL, PL/SQL, PHP, Visual Basic.

Monitoring Tools: ZENOSS, SPLUNK, ITCAM v6.1, IBM Tivoli Monitoring v6.2, Tivoli Performance Viewer, Thread Analyzer, Log Analyzer, Heap-Analyzer.

Reporting Tools: SAP Business Objects XI R2 and Oracle Hyperion EPM

Markup Languages: HTML, XML/XSL and DHTML, PHP

Scripting Languages: JavaScript, Shell script, PERL, JACL, JYTHON

Databases: Oracle 10.X/ 9.0.2.5/8.1.7/7. x, DB2UDB 8.2/7.2/7.1, Sybase, SQL Server 2000, Postgresql and MS Access 2000. configuration tools: CHEF and Puppet

Networking: TCP/IP, RPC, UDP, NIS, NFS, DNS, DHCP, Cisco Routers/Switches, LAN.

PROFESSIONAL EXPERIENCE:

Confidential, Redmond, WA

LINUX Administrator

Responsibilities:

• Worked open source technologies DOCKER, CHEF, OPENSTACK, REDMINE, JENKINS, ZENOSS, SPLUNK and ALFRESCO ENTERPRISE CONTENT MANAGEMENT.
• RDP to jumpbox and SSH to TEST/DEV/PROD to manager the servers
• Deployed the application developed the Appteam using Jenkins
• Installed an open source, flexible project management web application REDMINE with email, SSL integration, LDAP authentication
• Extensively worked on CHEF recipes for configuring servers, used TEST - KITCHEN to test the code before use it in infrastructure.
• Bootstrapped nodes with Alfresco community editions from the CHEF work stations, pulled the big packages from AWS
• Installed UAT/DEV/PROD servers for Alfresco installation, installed media manager, SOLR, SOLR4
• Scripted cookbooks recipes as the requirement of division. Managed servers thru CHEF. Hands on experience with version controls Git, Artifactory and SVN.
• Managed users and groups in the TEST/DEV/PROD Active Directories. Monitored the real-time resource information about the software and hardware with the help Resource Monitor (RESMON)
• Assisted with the consultant for the data migration NDAM to Alfresco
• Created installation documentation for REDMINE

Environment: Oracle Linux, RedHat Enterprise Linux 6.4 OS, Windows, VERITAS NetBackup, VMware.

Confidential, Seattle, WA

LINUX Administrator

Responsibilities:

• Worked on configuring, maintaining, and monitoring the File Servers like NFS, FTP and Samba.
• Installed VMware hypervisor on top of the Windows operating system and created several virtual machines.
• Installed Linux operating system on the virtual machines to make a Linux environment for creating the file sharing servers.
• Installed, configured the several services like NFS or FTP or Samba Servers depending on the requirement.
• Created users and groups and restrict them using Basic, ACLs and Advanced File Permissions apart from the File Server level permissions.
• Installed and updated required packages using the central repository (YUM) and RPM.
• Performed monitoring the network issues and tuning the performance of the system using some commands such as top, netstat, iostat, vmstat and ndd etc.
• Created Samba Shares depending on the modules discovered by the users.
• Shared files between Linux boxes and windows using the WinSCP, a secure FTP, SCP client for Microsoft Windows.
• Monitored the Linux servers on a regular basis and was into tuning them accordingly in order to optimize performance.
• Configured the Quotas so that users can be prevented from storing unnecessary files in the File Servers' storage.
• Helped other users in mounting the Samba Shares, allowing them to use the shared files.
• Performed log management by using Alert log and Sys log.
• Worked on automation of processes using Crontab and shell scripting using Bash.
• Handled network related services like FTP, NFS, Samba, TCP/IP.
• Performed daily backup of files using manual commands like tar, scp, dd, cpio, and VERITAS NetBackup.
• Handled server health related reports which were critical in deciding the performance of the servers.

Environment: Red Hat Enterprise Linux 6.4 OS, Windows, VERITAS NetBackup, VMware.

Confidential, Plano, TX

Linux Administrator

Responsibilities:

• Installation, configuration and maintenance Red Hat Enterprise Linux 5.
• Installed Operating System and configured kernel parameters for Linux/Unix servers.
• Worked on creating, maintaining and troubleshooting Disk partitioning, LVM and file management.
• Worked on configuring TCP/IP, network interface, assigning static routes and hostnames.
• Created shell scripts for automating the daily maintenance and update processes in the production environment.
• Archive management for files and directories employing the TAR tool and compression of files using the gzip and bzip2.
• Administered local and remote servers using SSH (secure shell) tool on daily basis.
• Supported data management through on-site & off-site storage and retrieval service.
• Installed, updated, and configured the necessary packages using the RPM and YUM software/package management.
• Monitored user and group administration, password management, file accessing and advanced file permission privileges.
• Automated some jobs by deploying the CRON tool for job scheduling processes.
• Deployed and installed new servers and their appropriate services for various applications in Linux.
• Resolved operation issues which comes in the form of tickets and assisted the users in solving their issues.
• Worked in setting up LDAP, DNS, DHCP Server along with effective group and System Level policies and roaming profile features by using Samba and NFS servers.
• Ensured the health and security of the Linux boxes which were in use.

Environment: Red Hat Enterprise Linux 5, EMC Servers, OTRS, BASH shell.

Confidential, Calgary, CA

LINUX Administrator

Responsibilities:

• Installation and configuration of RHEL 5.1/5.4 on Physical & Virtual servers.
• Decommission of Linux Physical & Virtual servers.
• Creation, extension and decommission of file systems.
• Provided infrastructure solutions for J2EE applications around IBM WebSphere Application Server, IBM HTTP Server, Cisco CSS, Site Minder and IBM MQSeries on AIX, Windows and Solaris platforms.
• Hands on experience with Vintella (VAS - Vintella authentication services), adding servers to Active directory domain.
• Handling physical/logical HP disk failures in servers, if required coordinating with vendors.
• Patching SLES & RHEL servers twice a year.
• Configured Global Security for WebSphere console and assigned different roles to Developers and other Admins.
• Update the server repository information.
• Physical and Virtual servers reboot. Modification of permissions, changing owner, group membership, setup their home directory and copy ssh-keys to the respective user’s home/.ssh directory.
• Migrated the WebSphere Application Server 6.0 to 6.1 and open a PMR’s with the IBM of different issues in Migration and in Production applications
• Pre-and post validation for host paths for any storage maintenance activities.
• Hands on experience with OpenAis “SLES” and pacemaker “SuSe” high availability (cluster) systems.
• Managing server configurations using CFEngine.
• Involved in implementation of sudo template to each service line in couple of accounts.
• Performing health checks on servers every quarter with respect to UNIX security related.
• Copying data from ftp to other servers upon user’s request.
• Creation/modification/deletion of user accounts across RHEL AND SLES operating systems.
• Creation/modification of groups.
• Performing CBN/PAR/Remediation which was sent by secondary controls.
• Changing permissions, ownership and groups of file/folders.
• Provided on-call support for any technical issues on UNIX servers.
• Monitoring system performance of virtual memory, managing swap space, Disk utilization and CPU utilization. Monitoring system performance using Nagios
• Involved in transition for various accounts regards to UNIX.
• Add/Remove/Modify startup scripts.
• Planning Daily, Weekly and Monthly activities as per POA.
• Generating Monthly Performance Reports.
• Updating of procedural & process documents.

Environment: WebSphere Application Server 6.0.x, JACL scripts., RHEL 5, SuSE 10.4, SuSE OpenAis, Nagios.