SUMMARY

• Around 6 years of progressive experience in UNIX/Linux Administration primarily on Red Hat Linux (RHEL 5/6/7), HP - UX 11.0, Solaris (10/11) and Windows (/2008/2012/) administration.
• Experience with System Administration which incorporates implementation, administration and Support in heterogeneous environments with expertise in Red Hat Linux and OEL, CentOS, Solaris and Windows.
• Excellent in OS upgrades, patches, packages installation, upgradation on production servers.
• Implemented and enhanced scripts in Linux using Bash, Perl, Python, Sed and Awk.
• Experience using Dockers to deploy containers, pull images from registry. Knowledge On Kubernetes administration to create Cluster and orchestrate the containers.
• Working knowledge of different types of configuration management tools like Puppet, Ansible to automate System administration tasks.
• Experience configuring Storage on Linux in environments with EMC SAN, NetApp NAS .
• Experience in Blades Chassis Managements on (HP) servers.
• Experience with Virtualization technologies like KVM and Xen .
• Maintained SVN and GIT repositories for Devops Environment, automation code and configuration.
• Expertise in building Servers using Kickstart for Linux using PXE/DHCP boot process and Cobbler based PXE .
• Extensively involved in configuring and administering storage solutions using Red Hat Linux Native Multipathing.
• Strong Knowledge and understanding in the configuration of DNS, DHCP, SMTP, NTP and Apache Web Server on Linux.
• Strong Working Knowledge and Understanding of Network Protocols such as TCP/IP and UDP.
• Experience with configuring and administering NFS on Red Hat Linux.
• Excellent Experience in Installation, configuration and Volume/File system management using Logical Volume Manager (LVM), Solaris Volume Manager (SVM) .
• Expert in Datacenter Operations including hardware, software setup monitoring, troubleshooting.
• Experience providing technical and administrative support for Windows servers.
• Respond to all UNIX and Linux System Problems and resolving them on a timely basis.
• Involved in Capacity Planning, Performance analysis, Uptime & Response time analysis.
• Involved in supporting high availability database infrastructure leveraging Oracle RAC technology.
• Understanding of RAID concepts like 0, 1, 0+1, 5 and implementation of Software raid using LVM and Hardware using hpacucli and hpssacli utility.
• Good exposure to Storage Solutions like SAN, NAS.
• Documented all procedures and standards from Linux environment perspective.
• Experience in implementing a Continuous Delivery pipeline with Docker, Jenkins and and AWS AMI's
• Good Experience in reviewing system log files for errors. Setting up CRON jobs for backups and monitoring process.
• Ability to quickly identify issues, determine root cause and long term solutions.

TECHNICAL SKILLS

Operating systems: RHEL4/5/6, CentOS 5/6, OEL5/6,Windows 2008 R2, Windows 2012 R2, HP-UX, Solaris(10/11), AIX 5.x.

Storage Systems Software: Logical Volume Manager (LVM)

Server Hardware: HP-9000 K, L, N series, rp 3440, rp 7440/rp 8440 Server, HP Integrity Superdome Servers, HP DL Series, IBM Blade Servers.

Systems Administration: User, Group, Sudoers, package & patch administration, ACL, Quotas, disk, slices, mounting file systems, Implementing RAID levels, NFS, DHCP, DNS, TELNET, FTP, HTTPD, Logical Volume Manager (LVM), NetApp, EMC Power path Management.

Monitoring Tools: HP Open view, Splunk

Storage Hardware: Symmetric DMX 800/1000 / DMX-2 / DMX-3 & EMC CLARiON FC, Cisco MDS Switch, Net App Filers, QLogic and Emulex FC HBA Cards, FC Storage arrays, RAID Storage arrays.

Web/Application Server: Apache

Scripting Languages: Shell Scripting (Bash), Perl, Python, Sed and Awk.

Services: NFS, LDAP, Apache, SSH, Send Mail, DNS, FTP, DHCP and Samba

Virtualization Products: KVM, Xen.

Ticketing /Change Request: Remedy, Jira and Servicenow.

Configuration Management: Ansible, Puppet

PROFESSIONAL EXPERIENCE

Confidential, Terrace, FL

System Administrator

Responsibilities:

• Install, Configure and Upgrade OEL 5.x/6/x/7.x, RHEL 5.x/6.x/7.x operating systems in the physical and virtual environment.
• Tuned Linux Kernel Parameters for Performance enhancement on Oracle Database Servers.
• Reporting ticket status and communicating with requestors & box owners over Voice Conference Bridges in case of severities.
• Involved in troubleshooting of CPU, Memory, I/O and Network to ensure uptime and connectivity for Linux Operating Systems.
• Developed and deployed stacks using AWS Cloud Formation Templates (CFT) and AWS Terraform.
• Install and configure of Load sharing Facility(LSF) on Linux machines.
• Developed Python Script to generate report for OS system Validation to identify any tasks that are not in compliance with the system.
• Developed Perl Script as Nagios client plugin to monitor the status of Hard disks and Storage Controllers so as to proactively generate automated tickets for disk failures.
• Reviewing system log files for errors. Scheduling of jobs thru CRON for backups and monitoring process.
• Developed role based Ansible playbooks to automate Post OS build tasks.
• Installed open source Ansible awx Tower using docker compose to Schedule jobs that run on a daily basis on the Host Inventories.
• Actively participated and supported in the migration of 460+ production servers from old data center to New Data Center
• Install various packages through rpm and yum as per the Company Policy.
• Experience with Monitoring System Performance and capacity, and involved in Capacity Planning and Server Sizing needed to handle the Forecasted growth.
• Analyze Root cause for a given issue and Work with technical Staff to document issues with a complete resolution.

Confidential, Bentonville, AR

Senior System Administrator

Responsibilities:

• Install, Configure and Upgrade OEL 5.x/6/x, RHEL 5.x/6.x and Solaris 10/11, AIX and Windows operating systems in the physical and virtual environment.
• Migrated Applications consisting of Shell, Perl scripts, SQL and C batches from AIX to Linux and UNIX to LINUX .
• Coordinated with various stakeholders to get downtime for migration. Migrated the applications in production safely during a suitable change request window.
• Opened Service requests as and when required to setup ssh and sftp trust for Linux Prod and Windows Servers.
• Disk and File system management through Veritas Volume Manager, Solaris Volume Manager, Logical Volume manager.
• Configure DHCP and TFTP Service to enable PXE boot for Clients during OS Install.
• Monitored Production logs in Linux, troubleshooted and resolved for any issues post migration in Prod and ensured smooth transition of applications.
• Worked on team forge and anthillpro to create a new configuration/bulid the repo’s for batches.
• Worked on Solaris container Technology; Created local and global zones.
• Worked with Offshore team to remediate any issues, reviewed the tasks on daily basis.
• Informix database and connection setup.
• Schedule the jobs in Cron as per the requirement.
• Experience in Creation and managing user accounts, security, rights, disk space and process monitoring RedHat Linux .
• Involved in troubleshooting of CPU, Memory, I/O and Network on Linux Operating Systems.
• Good knowledge in awk & Stream Editor(Sed) and using them in in Unix Shell script
• Remote monitoring and optimization of Server for File system, disk utilization, Memory utilization, threshold maintenance and Network traffic.
• Implementing password less (SSH) authentication between servers.
• Problem determination and troubleshooting, Security using SSH and Shell Scripting.
• Providing Online Support for RHEL in Production Environments.
• Experience with Monitoring System Performance and capacity, and involved in Capacity Planning and Server Sizing needed to handle the Forecasted growth.
• Created and maintained built wrapper scripts using PERL.
• Documented all build and process related items. Level one support for all the build and deploy issues encounter during the build process.
• Used Git as Version Control System (VCS) for pushing and tracking code or file changes.
• Configuration of Static IP interface for Linux VM’s on the command line.

Confidential, Columbia, SC

Senior System Administrator

Responsibilities:

• Install, Configure and Upgrade OEL 5.x/6/x, RHEL 5.x/6.x and Solaris 10/11, AIX and Windows operating systems in the physical and virtual environment.
• Troubleshoot Hardware, Software and Performance issues on Linux/Unix based systems.
• Installed and configured four AIX 5.1 Regatta P690 LPARs from start to finish. Nagios and TSM administrator. 24/7 Rotation.
• Maintained UNIX/Linux Operating System to provide optimum performance and system availability.
• Migrated AIX and Solaris system to IBM data center. Built AIX VIO and PowerHA servers. Implement LPM Live Partition Mobility to move power6 and power7 servers. Installed IBM tools on AIX, Solaris and Linux system.
• Utilizing AIX power7 and Power8 in a virtualized environment. LPAR work to split out environments for performance improvement utilizing VIO server Modification, Adapter, Disk attribute settings.
• Coordinate with program managers, architects, network, TSM, and SAN Storage teams to build, migrate and de-commission AIX LPAR system using NIM for IBM clients.
• Supporting Linux and UNIX servers and troubleshooting day to day problem.
• Configure DHCP and TFTP Service to enable PXE boot for Clients during OS Install.
• Administered Windows Servers, Managed server data backups. Built, Installed and supported Windows 2008 R2 and 2012 R2 servers.
• Installed Patches on Windows Servers running as guests on Xen and KVM to fix security issues.
• Installation configuration, troubleshooting of Websphere, Apache.
• Experience Managing Virtual Machines using VMware, Xen and KVM .
• Environment provisioning solutions using Docker, Kafka, Red Hat Satellite
• Closely coordinate with other Infrastructure teams like Site Service Engineers, Network Engineers, Storage Admins, Developers, Testers and Database Administrators.
• Configure Software and Hardware Raid such as RAID 1 and 5 to ensure data integrity and redundancy of OS and Data Disks.
• Used Sanlun and Linux Native Multipath to configure Netapp Storage on Linux OS.
• Upgrade Firmware on HP and IBM h/w to resolve critical security Vulnerabilities.
• Troubleshoot and Administer Network related issues for Linux based services using TCP/IP and UDP protocols.
• UNIX Admin and work on network implementation as in TCP/IP DHCP, SIP, NTP, IPV6 and RTCP and TIBCO based implementation.
• Installing and configuring Linux, Solaris, HP-UX, and AIX using kickstart, Jumpstart, Ignite and NIM.
• Fix, enhance and Create Shell Scripts to automate System admin tasks.
• Experience in migration of consumer data from one production server to another production server over the network with the help of Bash and Perl scripting.
• Troubleshoot and Administer LDAP, Sudoers for User Authentication and access.
• Use Configuration management tools such as Ansible and Puppet to automate System admin tasks and enhance build deployments.
• Experience on the installation of puppet client on the Redhat servers and CentOS .
• File System Administration on Linux for ext3/ext4, Swapfs and NFS.
• Use hpacucli and hpssacli utility to carry out maintenance of Physical Drives on HP DL Series Smart Array Disk Controllers.
• Used Git as Version Control System (VCS) for pushing and tracking code or file changes.
• Environment: RHEL 5/6, OEL 5/6, Windows 2008 R2, Windows 2012 R2, Solaris, AIX, Suse Enterprise 9/10, HP DL Series, HP Superdome, IBM, series, NetApp SAN/NAS, Isilon, Oracle DB, Cloudera Hadoop, Apache.

Confidential, Columbus OH

Systems Administrator

Responsibilities:

• Installation, Configuration and Upgrade of CentOS 5.x/6.x, RHEL5/6, Solaris and Windows operating systems .
• Day to day troubleshooting for end users on UNIX/LINUX
• Experience in installation of CentOS on multiple clients using Kickstart.
• Monitoring System performance using iostat, vmstat, TOP and SAR .
• Configure Qlogic/Emulex HBA card to connect Unix/Linux/VMware/Windows server to SAN switches/Storage.
• Configuration of NIS, NFS, sends mail on Solaris.
• Experience with installation and cloning of Linux and Windows VM’s using Xen and KVM
• Solaris Operating Systems upgrade, package installations, updates, patches and software fixes .
• Used Puppe t to automate the jobs and Used Puppet tool for managing system configurations.
• Processed the payloads using Perl, bash.
• Writing Puppet and Perl scripts for automated installation across different flavors of Linux such as RedHat, CentOs. This made it easier for installations and updates to be ran on multiple machines at same time.
• Involved in Installation, configuration and administration of Apache Webserver, Weblogic Samba server in Unix, Linux and windows environment.
• Designed Modules using puppet and managed automation of installation process.
• Manage package installation, administer services and network in HP-UX.
• Closely worked with Application teams for support and troubleshooting issues on Linux.
• Helped to establish standards, policies and procedures for all aspects of Unix server environment like administration, documentation and configuration.
• Create and administer Volume groups, Logical Volumes using LVM.
• Administered Zones on Solaris 10Solaris zones (containers) using utilities Zonecfg, Zoneadm etc.
• Create new File systems, and monitoring logs, disk usage on CentOS. Worked as an on call on a Pager rotation basis.
• Data Center Hosting and Involved in Capacity Planning for various applications and Databases.
• Created YUM Server, Automated rpm updates on multiple clients with appropriate Target version.
• Created and scheduling of Cron Jobs such as backup, system monitoring and removal of unnecessary files.
• Create and use SSH Tunnels with Local and Remote Port forwarding to access remote Systems.
• As On call SA, Responded to Page alerts and resolved the issues in a Timely Manner. Immediate attention for Host down alerts and engaging appropriate teams for resolution and escalating wherever required making sure the Application services are up and running for Business continuity.
• Monitoring Capacity Planning, Health checks of the Systems. Documentation. Incident and Defect analysis of server and application hosts.
• Configuring EMC and NetApp SAN Storage on Linux Operating System using Linux Native Multipathing .
• Creating Linux Block device Partitions on Shared SAN storage for use to the Database table spaces.
• Understanding of NFS, DNS, DHCP and Samba on Red Hat Linux and mounting NFS based File Systems on the Linux Servers with appropriate options.
• Configuring and maintaining Print Server using LP print service commands and AdminTool as a GUI to manage printing on a local system.
• Creating and Scheduling of Cron Jobs such as backup, System Monitoring and removal of unnecessary files.
• Involved in Server Capacity analysis and identifying Ideal Server requirements for various Applications and Databases based on the usage and Performance Numbers.
• Provided 24/7 Online Support for Internal Employees and external clients on a Pager rotation basis.
• Writing Shell Scripts to automate System Process.

Environment: RHEL 5/6, CentOS 5/6, HP DL Series,Solaris EMC Symmetrix, NetApp SAN, LVM