SUMMARY

• 7 Years of experience as Linux/UNIX system administrator on Red Hat EL 4.x, 5.x, 6.x, Debian, CentOS 4.x, 5x, Solaris 8,9, 10 and VMware ESX environment.
• Extensive experience with RAID using Volume Management Software such as Logical Volume Manager, Veritas Volume Manager, and Solaris Volume Manager.
• Operating Systems Installation, packages and Patches, adding peripherals, maintaining user accounts, System Security maintenance, backup/recovery, performance tuning, troubleshooting at various levels etc. Experience with Kickstart in Redhat
• Linux, Jumpstart in Solaris, Ignite in HP - UX. Implementation and maintenance of NFS, NIS, DNS, LDAP name services.
• Knowledge of clustering techniques that ensures high availability and GFS deployment. Write BASH Shell scripts.
• Implementing VMs using VMware ESX 3.1 and vSphere 4.x and vCenter and building KVM Hypervisor. Also worked with Solaris 10 zones to implement virtualized environments in the Solaris environment.

TECHNICAL SKILLS

SOFTWARE: load balancing and clustering, Veritas Cluster Server and Veritas NetBackup, Apache, Tomcat, WebLogic, JBoss, Nagios, Zabbix, BigFix, Splunk and Hadoop, Ansible, Puppet and Chef, Nginx, Solr, Remedy, VM converter, Raid, MySql, Varnish, Drupal, Nanu, Kickstarter

LANGUAGES: Ruby, Perl, Bash, C++, Python, Shell

PROFESSIONAL EXPERIENCE

Confidential, FAIRFAX, VA

Sr. Linux Administrator

Responsibilities:

• Migrate Physical Linux servers to Virtual (VMware) Servers VM converter
• Managed systems for engineering and managing infrastructure using Puppet.
• Act as a technical resource to the engineering.
• CI tools Jenkins, Hudson and uDeploy
• Troubleshoot any and all service or performance problems.
• Experienced in Linux systems and infrastructure automation
• Install and configured management systems, such as Puppet and chef.
• Experience building of puppet manifests and understanding of Puppet Enterprise infrastructure.
• Experience with Python, Ruby, and shell.
• Strong knowledge of networking, databases, and web applications.
• Install and configured Apache, Debian, Nagios, Nginx, Squid, Varnish, MySQL, MongoDB.
• Management of package and create RPM files.
• Implemented Drupal
• Experienced in Source Control System knowledge - Git/Crucible/Jenkins
• Operations Support Experience
• Maintained and manage ongoing software installs, upgrades and maintenance to production enterprise
• Configured Clustering, RPM Installation/Removal, Linux KickStart Configuration.
• Experience using Cobbler, Foreman, and Puppet essential.
• Experience configuring and trouble shooting a variety of clustering software configurations including Veritas and Redhat clustering.
• Extensive understanding of boot process and run levels, paging and swapping, inter-process communication, functions of devices and device drivers and file system concepts.
• Email configuration, NIS and LDAP administration and managing daily operations.
• Troubleshoot of server virtualization products like KVM, VMware, and Virtual Box.
• Knowledge of cloud computing and DevOps techniques.
• Create EC2 instances of Redhat OS for AWS
• Patch Management, Package Installation/Upgrades and Kernel upgrades
• Introduced Splunk and Hadoop to our staging environment
• Install and configure Splunk to monitor application and server logs
• Installed/Configured the WebSphere server, JBoss application server, Weblogic server; Managed tuning and performance of high profile applications running on them.
• Configuration and Administration of Load balancers and F5's, taking servers in/out of rotation.
• Software package and patch administration, involving adding and removing software packages and updating patches.
• Installation, Configuration and managing firewalls like Fortinet, ZyWall, SonicWall, Anti Spam, Web filtering, Port forwarding.
• Handling problems or requirements as per the ticket (Remedy) created.
• Configuration and administration of LDAP, NFS and NIS in Linux and also implemented Samba for sharing of resources between Linux and Windows environments.
• Writing shell scripts for Automated Back- ups and Cron Jobs.
• Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostat etc) and tuned I/O, memory, etc.
• Maintained proper documentation of all the activities carried out during the project.
• Install and configure Puppet in our stage and production environment
• Trouble shoot lagging website and Unser interface for multiple applications

Confidential, ROCKVILE, MD

Sr Linux Administrator / Devops Lead

Responsibilities:

• Installation and configuration of Red Hat Linux, Solaris, and CentOS on new server builds as well as during the upgrade situations.
• Period checks of Remedy Ticketing System
• Build Virtual Redhat Machines
• Install and configure Nginx as proxy server
• Install and configured solr and Drupal
• Update Drupal and modules
• Configure File systems and Monitor Logs and Log rotations
• Log management like monitoring and cleaning the old log files.
• System audit report like no. of logins, success & failures, running cron jobs.
• System performance for hourly basis or daily basis.
• Install and configure Apache, tomcat and Jboss for webserver environment
• Installed and configured Puppet
• Implement security standard of Operations
• Configure Nagios for server monitoring
• Remotely coping files using sftp, ftp, scp, winscp, and filezilla.
• Created user roles and groups for securing the resources using local operating
• System authentication.
• Install and configure Apache and MySql in Linux servers
• Investigates and resolve any Network Intrusion with Ossec
• Deploy and manage applications in a jboss environment
• Scheduled jobs with Crontab
• Experienced in tasks like managing User Accounts and Groups, managing Disks and File systems.
• Install and configure Instruction Detection System (IDS) like Tripwire, Snort, and Lids.
• Configuring & monitoring DHCP server.
• Taking backup using tar and recovering during the data loss.
• Experience in writing bash scripts for job automation.
• Documenting the installation of third-party software's.
• Configuring printers to the Solaris and Linux servers and also installing third party software’s.
• Maintaining relations with project managers, DBA's, Developers, Application support teams and operational support teams to facilitate effective project deployment.
• Manage system installation, troubleshooting, maintenance, performance tuning, managing storage resources, network configuration to fit application and database requirements.
• Responsible for modifying and optimizing backup schedules and developing shell scripts for it.
• Performed regular installation of patches using RPM and YUM.
• Maintained LVM, VxVM and SVM file systems along with NFS.

Confidential, VIENNA, VA

Linux Administrator / Application Support

Responsibilities:

• Mass Build of Linux/Solaris OS servers using kickstart /jumpstart automation application.
• Installation of LAMP STACK on Linux environment.
• Installed and configured Puppet.
• Scripting languages such as Python and Perl.
• Creating and cloning virtual machines in VMware environment using Virtual Infrastructure client 3.5 and Vsphere 4.0.
• Coordinate scheduled patching maintenance
• Worked extensively with Network File System (NFS) for storage.
• Creating logical volumes, extending the filesystems using LVM.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
• Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
• Maintain servers, operating systems and software to ensure maximum availability.
• Assist in planning and upgrades of servers, operating systems and software.
• Assist in the implementation of a security plan for the Golden West Internet Solutions network that will include adequate firewall protection and upgrade and maintenance procedures for servers and firewalls that will ensure maximum security protection.
• Install, troubleshoot and maintain servers and other systems (dedicated appliances, Virtual Machines etc).
• Coordinate with Operations Manager, Wholesale Product Manager and customers to support their requirements and support them for break/fix requirements.
• Works with law enforcement and legal representatives in investigations of possible security violations.
• Attend and participate in job safety and other programs to keep current on latest technology, security issues etc.
• Participate periodically in an on-call rotation and respond to after-hours issues

Confidential, WASHINGTON, DC

Linux System Administrator

Responsibilities:

• Configured with TCP/IP network
• Configured virtualized infrastructure for RHEV/KVM, and Dockers.
• Configured network interfaces, routing table, NFS and DNS configuration and basic network troubleshooting
• Provided administration, troubleshooting, configuration, installation, deployment, maintenance, upgrades, and high availability design projects.
• Provided direction and day to day support for the systems infrastructure (Cisco UCS / RHEV Managers).
• Documented the Root Cause Analysis Reports for virtualized Linux servers
• Coordinate Log rotation and Log monitoring with scripting s
• Responsible for on-site installation, implementation, maintenance and repair of company and multi-vendor systems solutions.
• Configured Apache to run Jenkins
• Proactively responded to potential equipment issues to prevent unplanned interruption of customers' business.
• Delivered fully integrated solutions, which includes peripherals, servers, communications, operating systems and applications software.