SUMMARY:

• 13 years of experience in teh Information Technology industry as Linux Professional with hands on experience in wide range of concepts and technologies.
• Experience with implementation, maintenance and support of multiple server platforms including Redhat Linux and Solaris.
• Developed automated scripts using bash shell scripting.
• Configured & maintained network and naming servers like DNS, DHCP, FTP, SMTP, NIS, HTTPand NFS.
• Experienced with EMC, Dell SAN Administration.
• Installed and configured Jboss Application server and JON server.
• Experienced with VMware ESXI 5.x and provisioning virtual machines.
• Experienced in Performance monitoring & tuning using Linux utilities.
• Strong technical background includes major Linux hardware and operating environments as well as supporting skills like programming product documentation network architecture & trouble shooting.
• Provided production support in an on - call rotation in a 24x7 environment.

TECHNICAL SKILLS

Operating Systems: RHEL 5.x,6.x,7.x/CentOS/Fedora, Solaris 8, 9, 10, Containers and Zones, Windows 2008/2012/R2, Oracle Linux, and AIX.

Software Packages: Apache, WebLogic, Kickstart, Jumpstart, DNS, send mail, Perl, LDAP, Sun One Directory 5.2, NetBackup 5-7.1, VMware VSphere 5.x, Jboss 5-7, JON, Subversion, Redis, NFS, Centrify, RSA, VMware view 5.x/6.x(VDI)

PROFESSIONAL EXPERIENCE

Confidential, Fort Worth, TX

Senior Linux Administrator

Responsibilities:

• System Administrator in a large scale environment primarily managing mid-range to high-end Linux systems in support of development activities.
• Installation and maintenance of hardware/software in production, dev, test as part of Linux team.
• Facilitate communication from business requirements into technical designs and implement designed systems builds.
• Installation and configuration of Jboss 5.x, 6.x, 7.x application server, Apache, Tomcat and JON (Jboss Operations Network) 3.x server for management of Jboss servers.
• Configuring Kickstart/Jumpstart servers for installation of RHEL/Solaris through network.
• Performed daily Unix/Linux support, such as establishing new accounts, creating and resetting passwords, developing scripts, performing system backups and recovery, and installing software patches and updates.
• Created shell scripts to secure teh Linux systems as per CIS standards and configured IPtables for security.
• Configure CPU, Memory and Disk partitioning through volume manager and assigning to teh servers as per requirement.
• Creating, Installing and administration of zones on Solaris 10.
• Experienced in ZFS Filesystem and managing disks with volume manager.
• Writing and modifying shell, bash, Perl scripts & Cron to perform automated administration tasks.
• Troubleshooting and analysis of hardware and software failures for Linux servers using utilities core dump and log file analysis.
• Experienced on Redhat network satellite server. Experienced in creating custom child channels to maintain teh patch level.
• Design internal patching strategy related to systems.
• Worked on Remedy action request system for managing teh processes automatically.
• Connecting teh fiber cards, installing teh drivers and firmware upgrade for Linux servers & OS patching with teh recommended patch cluster.
• Experienced in automating teh system administration with Chef.
• Installing and administration of VMware ESXI 5.x hosts and provisioning, backup of virtual machines.
• Experienced in creating datacenter, virtual machines and templates in VSphere.
• Proficient in VMware technologies like VMware Vmotion, VMware vcenter, vcenter converter and vcenter Update.
• Performance tuning and updating patches and firmware for ESX servers.
• Installation and configuration of storage systems like Dell Compellent and EMC-cx400.
• Experienced in creating LUNS and presenting to VMware as per requirement.

Confidential

Linux Consultant

Responsibilities:

• Perform SA responsibilities of 24/7 Customer facing datacenter
• Primary SA for Linux & Solaris Virtualization efforts for Data Center Consolidation
• Perform Jumpstart automation for Zones and Containers
• Design internal patching strategy as related to systems
• Follow change control processes to ensure production stabilization
• Document new issues and rewrite existing procedure with new modifications
• Extensively used LVM, creating Volume Groups, Logical volumes, and disk mirroring for Solaris and Linux servers
• 24/7 support, Trouble shooting, debugging teh issues raised in teh production environment.
• Experienced with setting up SAN environment for backup & storage of data.
• Trouble shooting & support for SAN related issues
• Handled User & System Resource management, job scheduling, and space management
• Wrote Shell scripts using ksh/bash/Perl for process automation of databases, applications, backup and scheduling.

Confidential

Linux Administrator

Responsibilities:

• Perform installation & administration of Application Server Web Sphere, Jboss, Apache/Tomcat
• Responsible for administration & support for Linux servers running critical applications.
• 24/7 on call support for Linux related issues.
• Responsible for creating RAID on teh backend servers for high availability of data.
• Formatting raw disks and partitioned them using teh format utility, installing Solaris operating system, creating file system, devices and special files using newfs.
• Used commands for creating new users, groups, user passwords, changing passwords, managing user accounts and locking users, Monitored System processes & system status; identifying system bottlenecks.
• Performance tuning & optimization of kernel parameters for performance issues in production environment.
• Experienced in Installing & Administration of DB2 on Linux servers.
• Joined multiple disks to overcome disk size limitations, mirrored data for fault tolerance.
• Responsible for daily backup and recovery using Linux utilities
• Managed systems and network related issues like installation, configuration and troubleshooting Linux servers.

Confidential

Software Engineer

Responsibilities:

• Installing vendor specific packages and patches on Linux and AIX servers.
• Experienced in data center operations, storing, retrieving, backup & wiping of data on disks
• Installing & administration of Application and Web Servers including Apache, Web Sphere
• Experienced with Unix Administration EMC SAN Administration, &NAS administration.
• Experienced in Installing, troubleshooting, & Administration of SAN hardware & software.
• Performance Tuning, optimization, and troubleshooting of Unix systems Issues
• Storage Allocation was done according to teh requirements.
• Created Copies using HDS Shadow Image for backup and DR purpose
• Testing performance monitoring tools running on teh Linux servers.
• Provided support for production and development systems. Environment consisted of multiple Dell and HP Servers.
• Implemented, installed, and supported High Availability (HA) cluster on AIX servers (HACMP for AIX).

Confidential

Software Engineer

Responsibilities:

• Installations of all teh required Software, documentation and licensing.
• Setup various user profiles, environment variables/security to ensure smooth operation.
• Expertise in setup various Network Printers and troubleshooting Printer problems.
• Scheduling cron jobs to automate teh system.
• Used tools Ufsdump for day to day full and incremental backup.
• Used various commands to check teh Performance of teh system, load balances on teh CPU and memory.
• Expertise in setup DNS Server, DNS Client and troubleshoot DNS network issues.
• Configured, monitored and maintained teh NFS service
• Configured NIS and DNS clients to teh existing networks
• Took backup using tar, Ufsdump, cpio utility and automated backup using Cron.