SUMMARY:

• Having 7 years of experience in IT industry in the areas of System Administration, System Support, Capacity Planning and Troubleshooting UNIX servers, Managing and Administering, SUSE Linux, RHEL 4/5/6/7,CentOS, Windows and AIX, SUSE Linux.
• Hands on administrative experience on installation of Packages and Patches in Linux using Redhat Satellite server.
• Installed, configured and implemented automating the provision of OS by using KickStart for Redhat.
• Extensive experience on configuration and OS installation through network and standalone installation technique, and also installing third party software and services.
• Experienced in configuring Volume Management by using Logical Volume Manager (LVM) in Linux, VERITAS Volume Manager (VxVM).
• Proven ability in implementing High Availability environment using Veritas Cluster Server 4.1 with agents of Send mail, Web logic and NFS.
• Working experience with cloud infrastructure of AWS (Amazon Web Services) and computing AMI virtual machines on Elastic Compute Cloud (EC2).
• Regularly updated all software and operating systems on the instances running in EC2, to eliminate security loopholes.
• Involved with Applications & middleware teams in writing the Program Scripting for automating the data transfer and file transfer tasks using JAVA and Python
• Experience in Installation and configuration of VMware ESX server 3.5 on Dell and HP
• Proliant servers and configured VMs for Linux.
• Expert in UNIX shell scripting - ksh, bash, sh and knowledge of PERL scripting.
• Experience with patch and package administration including building of packages and RPMs.
• Experience in diagnosing and resolving TCP/IP connection problems
• Experience in performance tuning, trouble shooting and resolving network issues, related to the servers.
• Experience in administering Webserver Apache and Application server JBoss.
• Experience with switches and routers from various vendors like Cisco, Dell, and HP.
• Excellent written and verbal communication skills.
• Experienced in managing and creating all kind of file systems like VxFS, ZFS, Ext3, Ext4, UFS.
• Expert on Raid-0, Raid-1, Raid-5 and created Logical Volumes, Logical Volume Groups and manipulated them as required
• Experienced in configuration, installation, and support of JBOSS, Tomcat, Apache Web server, WebSphere, LDAP and mail server.
• Hands on experience in user Administration, Hardware setup, and managing paging/swap space.
• Highly experienced in Process automation and Monitoring using Shell Scripts.
• Accomplished backup procedures using Veritas Netbackup and performing Disaster recovery and patching.
• Competent in DHCP Server, NIS, NIS+, LDAP, NFS, TCP/IP and Samba.
• Strong understanding with VMware. Installed and monitored Virtual environments with ESX/ESXi servers and VirtualCenter2.X.
• Managed, configured and installed puppet on various servers.
• Dealt with on call support and round the clock service (27/7).

PROFESSIONAL SUMMARY:

Linux Administrator

Confidential, Woodland Hills, CA

Responsibilities:

• Installation, Maintenance and Configuration of Redhat Linux 5.x/6.x,7x, Solaris 10/11, CentOS Servers on HP, IBM Blade, Standalone servers.
• Monitoring server performance, CPU Utilization, and disk usage.
• Installed, configured and maintained the backup and recovery of several Unix/Linux servers.
• Configuration of NIS, NIS+, LDAP, DNS, DHCP, NFS, LDAP, Automount, Send mail, FTP, remote access, Active Directory, Security management and Security trouble shooting skills.
• Expertise in adding network printers and conducting day-to-day system administration, including backup/recovery in NAS environments.
• Experience in SE Linux, SUDO and configuration of system resources in term of ACL.
• Co-coordinating with all the different teams like virtualization, monitoring, networking, SAN, and application team to make sure the work is completed on time.
• Worked on different types of storage like Netapp, EMC SAN and Hitachi storage.
• Conducted AIX, Linux System security and auditing and performed Monitoring and Kernel Tuning.
• Responsible for management, troubleshooting and maintenance of Net Backup environment which includes documentation and removal of daily, weekly, and monthly tapes.
• Managed systems routine backup, scheduling jobs, enabling cron jobs, enabling system logging and network logging of servers for maintenance.
• Experience in effective utilization of VMware Virtualization using ESX hypervisor of VSphere, and troubleshoot the Linux server issues (CPU, Memory, Network bottlenecks).
• Hands on experience on patching for SLES 11.4, 12.1 and 12.2.
• Performed RPM and YUM package installations, patch and other server management.
• Installed and configured Logical Volume Manager - LVM and RAID.
• Documented all setup procedures and system related Policies (SOP's).
• Configuring DNS, DHCP, doing DNS entry in Infoblox, assigning the IP address, hostname, gateway and adding the particular repositories to the servers.
• Created and maintained user's accounts, profiles, security, rights disk space and process monitoring.
• Bash scripting for maintenance and automation especially post scripts after install build to customize OS and automate server maintenance to update group OS servers.
• Expertise in troubleshooting basic issues such as adding disc, configuring and mounting NFS by adding the directories in /etc/export file and make sure it's mounted.
• Implement and automate DevOps continuous integration and deployment pipelines and functions using Chef, Puppet and Dockers
• Worked on git, github as code repository.
• Worked on bash script for building Vm's.
• Installed deployment and system configuration automation by Puppet and Chef Server.
• Networking communication skills and protocols such as TCP/IP, Telnet, FTP, SSH, rlogin, scp.
• Actively involved documenting new things and build process procedure and new issues.

Environment: Vmware, Linux (RHEL 6.x, 7.x, SLES 11.x, 12.x, Red Hat Satellite, CentOS,Windows, Puppet, Active Directory, Service Now, Jenkins, Git, Infoblox, SUSE Manager.

Linux Administrator

Confidential, Brea, CA

Responsibilities:

• Performed system administration activities using used NFS, NIS, DHCP, FTP, Send mail, and Telnet for Linux.
• Worked on variety of Linux platforms Red Hat Linux, Solaris, Salt which includes installation, Configuration and maintenance of applications on this environment.
• Managed various file system and added Disk Space on the Linux and UNIX servers. .
• Updated and installed packages and patches for all the servers.
• Installed and configured apache web servers on various Linux and UNIX servers.
• Monitored system logs and important messages for warnings and errors of the software and hardware failure.
• Responsible for system administration activities like updating the maintenance page, installing, stopping and restarting the services during the maintenance period; generated daily report physically.
• Worked with UNIX and Linux servers using internal tools such as whom, du, DF, top, dmesg, free.
• Involved in various SAN Fabrics (FC SAN, iSCSI SAN) and NAS storage for effective and efficient storage.
• Responsible for setting up and managing Multipath, Powerpath, added SAN, created physical volumes, volume groups, and logical volumes.
• Configured KickStart and Jumpstart environments.
• Made backups of the critical files using gzip, tar, zip, gzip and compress utilities.
• Migrated servers between ESX hosts and created cloned Linux Virtual Machines, templates using VMware Virtual Client 3.5.
• Configured and monitored periodic Disaster Recovery (DR) test activities.
• Managed NFS configuration to set up servers.
• Developed Chef Recipes to configure, deploy and maintain software components of the existing infrastructure
• Setting up & trouble shooting the nightly/on-demand builds for all Patches/Hot-fixes and for all releases
• Setting up Jenkins Continuous Integration builds for all releases on windows and Linux.
• Integrated Maven with Subversion to manage and deploy project related tags.
• Installed and configured Jenkins tools on Linux and windows platforms, Manage slaves and installing Jenkins plugins
• Developed Shell script to list recent 'n' number of builds for all the components..
• Having Good Experience in Automation Engineer Using Python and bash Scripting.
• Performing Build & Release activities for Major releases
• Worked on AIX to Linux migration.
• Worked on NPIV setup on AIX
• Worked on Redhat Linux installation on VMware
• Setting up & trouble shooting the nightly/on-demand builds for all Patches/Hot-fixes and for all releases
• Setting up Jenkins Continuous Integration builds for all releases on windows and Linux.
• Integrated Maven with Subversion to manage and deploy project related tag.
• Installed and administered Nexus repository to deploy the artifacts generated by Maven and to store the dependent jars which are used during the build.
• Installed and configured Jenkins tools on Linux and windows platforms, Manage slaves and installing Jenkins plugins.
• Worked on git, github as code repository
• Basics with deploying servers controlled by Chef as well as push out configuration changes.
• Configure Monitoring using Nagios.
• Troubleshot and configured Symantec Enterprise Security Monitoring Tool.
• Provided 24x7 production support for 700+ Linux.
• Presented weekly system status report and maintained documentation reports.

Environment: RedHat Enterprise Linux 4/5/6;CentOS; VMWARE; Lenovo workstation's (D2, D3, D10, D20); DELL PowerEdge 1650,2850,2950,6400; Sun SPARC workstations (A21, A22, A70, A89) and Servers E450, E3000, E3500; HP-Proliant DL 360G5; NFS; NIS; DNS; Shell/PERL scripts; SAN; Tivoli; Puppet; Nagios; SVM; LVM; ZFS; zones; VxVM; Oracle 9i;

Linux Engineer

Confidential

Responsibilities:

• Linux expert with experience in Commends, Load-balanced, Configuration and web servers
• Progressive experience in IT industry as the Linux System/VMware Server Virtualization
• Installation of RHEL, SUSE Linux, Centos, Slat and Fedora on physical server and virtual server.
• Planning and Implementation of Kernel patches on RHEL Servers
• On-call support using the Remedy Ticket System for routine system administration issues
• Used VM converter converting Physical machines in VMware VMs
• Monitoring and analyzing performance of around 3500 ESX Hosts, 35v Center Servers
• Created VMware Lab setup as per Internal QA team's requirement using VMware servers
• Experienced with Learning on the job and explore new technologies with little supervision
• Automated Linux production server setup using Puppet scripts. Used these scripts to replicate production build environments on a local dev box using Vagrant and Virtual Box
• Tuned the TCP/IP stack for troubleshooting application and OS issues
• Used NetBackup for backing up & restoration of file systems
• Built new servers using the Custom jumpstart installation and Kick start
• Secured services using TCP wrapper and SE Linux
• Strengthening security by implementing and maintaining Networks Address Translation in the company's network.
• Worked with Firewalls using IP Tables
• Configured firewall based on Red Hat Linux and FreeBSD 4.x that has three network interfaces
• Involved in Setting up Continuous Integration Environment using Jenkins and responsible for design and maintenance of the GIT Repositories, views, and the access control strategies
• Opened SSH configuration, Sudo Configuration
• Repaired the corrupted file system using FSCK
• Created Logical Volumes (LVM) for Linux operating system
• Wrote Bash Shell scripting to automate the regular tasks like removing core files, taking backups of important files, file transfers among servers
• Maintained, updated and audited system documentation
• Installation and Implementation of Apache Application Server