SUMMARY

• 7+ years of UNIX System and Network administration in Redhat Linux 4/5/6/7 and AIX
• Server installations, configurations, upgrades and migrations on Linux.
• Installation, configuration and administration of virtual machines.
• Administrating and troubleshooting Red Hat Cluster Suites.
• Participate in installing and configuring of UNIX/Linux based Oracle 10g products
• Strong knowledge of large - scale Linux deployment methodologies, kernel configuration, performance monitoring, and tuning
• Experienced in working with Network Engineers to install, manage, and configure NAS based storage and insure overall system and network security.
• Hands on experience with Docker
• Deployment support and configuration of cloud services including AWS.
• Exposure in setting up Puppet environment and managing nodes configuration
• Complete understanding about puppet functionality and relations between master and client.
• Experienced in managing user and group management in Linux Environment
• Experienced installing, Configuring and supporting VMware ESX hosts.
• Well experienced in managing LVM
• Making use of PowerShell, Python and other tools to automate a range of tasks in an OS diverse environment.
• Perform day to day LVM operations and System Admin tasks.
• Understanding about all Puppet integrated tools such as Hiera, Mcollective, Factor etc
• Full knowledge about push node configuration on several hundreds of nodes using collective
• Well versed with GIT version control & its process for maintaining code in higher environments

TECHNICAL SKILLS

Languages: Python, Java, C, C++, My SQL, PSQL, JavaScript, Shell, SQL, UNIX

Web Application Server: Tomcat, Apache, IBM RAS/WAS, WebLogic

Database: Oracle 10g & 11g, Sybase 12& 15, Oracle RAC, Oracle DBA, DB2/UDB

Operating system: Windows, Unix, Sun Solaris, Linux, Red Hat, CentOS, Ubuntu

Clusters: Veritas Cluster, Sun Cluster

Networks: DNS, SSH, HTTP/HTTPS, BIND, DHCP, NFS, NIS, LDAP, NAS, SAN

Automation Tools: Puppet, Chef, Splunk, Nagios

PROFESSIONAL EXPERIENCE

Senior Linux Administrator

Confidential, Glendale CA

Responsibilities:

• Experience with Linux installations, configuration management and patch administration as member of a production support team.
• Deployed Puppet for configuration management to existing infrastructure.
• Implemented puppet to manage all of servers & automate the build/configuration of servers
• Experience using Salt, Ansible, Dockers, Jenkins.
• Build automatic provisioning system with Kickstart and Puppet.
• Strong experience with XML, SQL, PERL, and Shell scripting.
• Defined AWS security groups which acted as virtual firewalls to control the incoming traffic onto AWS EC2 instances.
• Managed Users on Unix/Linux and Windows systems.
• Experienced installing, configuring and supporting VMWare ESX hosts
• Installed, monitored and supported Web and application servers on Linux environments
• Provided cross platform data access from Linux to Windows users by deploying Samba.
• Provided application support for various Engineering applications such as Ansys and Abaqus.
• Gathered requirements from Engineering team and build application installation documents.
• Perform day to day LVM operations and System Admin tasks.
• Wrote & automated security audit scripts in the environment
• Administering and troubleshooting of Redhat Clusters.
• Adding and removing nodes from and to the cluster.
• Experience in Installation and support of server adapters HBA (host-based adapter) and network cards.

Linux Administrator

Confidential, Iselin, NJ..

Responsibilities:

• Administer and troubleshoot Cisco Load Balancers, F5 Load Balancers (LTM/GTM), Citrix Netscalers, Solarwinds.
• Ring in changes in production following ITIL standards under Change control mechanism.
• Performed build and deployment of servers in Virtual environment using vSphere, vCenter and deploying global policies using HPSA
• Performed DBA activities like installation and configuration of Oracle RAC database, Oracle 7.x/8.x
• Configured and Installed Ubuntu Linux 16.04LTS and deployed in Citrix
• Planning, creating and managing Active Directory group policy Templates and Policies Administration.
• Performed Data Centre Migration and Integration in a critical time crunch scenario
• Managing Access Administration, restricting and securing unauthorized access to the hosts and granting privileged access to the System Account and Users Accounts
• Configured secured shell login SSH, Public/Private Authentication
• Worked on NFS, DNS, NIS, Telnet, SSH, SFTP, Chef/Knife
• Providing day to day support to the development and Database teams.
• Supporting scheduled periodic patching of the servers and supporting the release deployments, supporting/upgrading Jenkins to support deployment process.
• Participating in trouble shooting complex issues with Storage, ESxi hosts, Firewalls and Networking
• Prioritizing the tasks participating in War room calls and triage the high priority issues
• Worked on monitoring tools such as OEM, EM7, New relics, HP Open View, XMatters.
• Proactively monitoring the systems health check and load on the hosts
• Tools worked on Workbench Workstation, HPSM, HPSA, Jira, F5, Chef/Knife, Sub- Version, Jenkins, Jira, and Service now.

Confidential - Chicago, IL

Systems Administrator

Responsibilities:

• Loaded Linux Operating System both physical and virtual
• Ensured that the servers are lined up with all the configurations requested by the Project/Stakeholders.
• Actively participated in all technical meetings of the Project.
• Collaborated activities with team members.
• Work accordingly to the deadlines set by the project to build servers in the new data centres in different locations of the clients
• Managed 350+ ESX servers located at various data centres by one virtual centre. Each Data centre has multiple clusters with biggest of 8 clusters used for HA and DRS for disaster recovery & Load balancing.
• Experienced deploying VMs using VMware templates.
• Provided updates to team leads about the status of each server allocated and ensured all setup/configurations are done for migration/cut-overs activities.
• Actively available during migrations of the Servers production change window starting from midnight to early morning.
• Played a vital role in Creating Virtual Machines, cloning virtual machines, converting P2V (used standard VMware converter tool), VM-Provisioning (Linked clones, thin disks, de-duplication) taking Snapshots of virtual servers, HA.
• Resolved problems related to performance metrics such as Processor Usage, Memory etc
• Learned new technologies of the migration project.
• Wrote automated security audit scripts in the environment.
• Working knowledge on of different types of configuration management tools like Chef, Ansible.