SUMMARY

• Over 4+ years of experience as a RHEL 3.x/4.x/5.x/6.x, CentOS, Ubuntu, Sun Solaris 8/9/10 SLES 10/11 & IBM AIX 6.x/7.x platforms.
• Experience working on planning, installation, migration, upgrade of OS (AIX, Linux), as well as deployment and Production Support.
• Good Understanding of business requirements, capacity planning, Vendor management, team co - ordination, business migration. Patching and Packages rollouts.
• Expert experience in install / rebuild servers in Red Hat Linux 5,x & 6.x for both virtual and physical servers.
• Worked on Installation and configuration of various services like DNS, DHCP, NFS, Sendmail, Apache Web Server, Samba, SSH, http, RPM, package management.
• Experienced in OS (Solaris, Linux, and AIX) level patching and level recovery.
• Experience in Linux Virtualization implementations such as VMware.
• Created/written backup scripts to transfer the XEN virtual machine images to DR site.
• Worked on Setup and configuration of Apache in Redhat.
• Worked on Installing KVM (Kernel Virtual Machine), configuring KVM Virtual Network, and creating KVM Networked Bridge Interface, creating KVM Virtual Machines.
• Expertise in configuration Management using CVS, SVN and well versed in code management using Repositories.
• Worked on installation and configuration of DevOps tool Puppet.
• Worked on Automation of task using Puppet. Application as wells as any upgrade to the nodes were push through puppet.
• Experience in using Subversion and CVS Version Control.
• Set up the satellite server and planned for system updates.
• Experienced in supporting Red Hat Satellite server, RHN.
• Strong knowledge in DNS, DHCP and IP addressing. Experience administering Active Directory and group policies.
• Expertise in systems performance monitoring & tuning for CPU, disk, memory and network utilization.
• Extensively worked with Nagios for performance monitoring.
• Experience working on boot loaders like GRUB and LILO and also upgrading Kernel on Redhat Linux servers.
• Extensive knowledge of NIM, Jumpstart, Kickstart.
• Replaced failed hard drivers, memory dimm’s, back planes, CPU component’s, Fiber Channel Adapters (HBA’s), NiC cards and other hardware.
• Experienced in Installation and Configuration of Web Sphere Application server V3.5/4.0/5.x,6.x, IBM HTTP Server, Webserver on AIX, Solaris and Linux platforms.
• Planning and Designing VMware VI3 (ESX3.x/ ESXi/ Thin ESX and VMware Virtual Center).
• Expertise in managing application tools Jump Start, Solstice Disk Suite, and SVM.
• Configuring & Troubleshooting NFS Servers and Clients, in UNIX Environment.
• Implementation of RAID levels like 0, 1, 0+1, 5 using VERITAS Volume Manager.
• Experience migrating applications from 4 to 5 and to 6 (manual upgrades).
• Strong knowledge of Korn Shell, Bash, Perl, Python scripting.
• Worked on creating documentation as well as worked on 24X7 call rotation support.

TECHNICAL SKILLS

Operating System: RHEL 3.x, 4.x, 5.x, 6.x,7 Centos 4/5, AIX, Ubuntu, SUSE, Cent OS, Windows XP.

Web/Application Server: Apache, IHS, Tomcat, WebSphere, WebLogic.

DevOps: Puppet, SVN, GIT, ANT, Maven, Ansible, Docker, Jenkins.

Cluster Server: Veritas Cluster, Red hat cluster & Oracle RAC cluster.

Languages: Bash, Shell, Python Scripting

Network Services: DHCP, Send mail, HTTP, Samba, NIS, NFS, DNS, SSH, FTP, TELNET

Virtualization: VMware and VSphere

Monitoring Tool: Nagios, Tivoli and BMC Patrol

Firewall: IP-Chains, Ip tables, NAT

PROFESSIONAL EXPERIENCE

Confidential, Dallas, TX

UNIX Systems Engineer

Responsibilities:

• Installation and configuring Red hat Enterprise Linux 5.x/6.x, Suse Linux, CentOS and AIX servers in development, test and production environments.
• Built Servers using Kickstart for Linux, Jumpstart for Solaris, and NIM for AIX installation
• Worked on Linux administration Support, Performance tuning & monitoring, problem analysis & resolution.
• Worked on configuration and Volume/File system management using Logical Volume Manager (LVM)
• Worked on Open LDAP administration, providing user authentication and resolving various issues including setting replication between master server and backup server.
• Immediate acknowledgement of issues & solving them while constantly updating status for all levels of severities and provide RCA report.
• Effective utilization of change management in installing or configuring, packages, patches or 3rd party tools on Linux.
• Perform korn shell and Perl scripting as needed to support integration and automation as necessary.
• Performed monitoring for servers, applications and switches using Nagios.
• Configuration of network yum repository as well as local repository.
• Imported and managed multiple corporate applications into Subversion (SVN).
• Configured Puppet Configuration Management with specific client requirement such as Create user/remove user, Install /Remove packages and package updates, Configure multi nodes.
• Deployment of new nodes using Puppet. Configured new nodes to enterprise setting.
• Worked on automating task-using Puppet. Application as wells as any upgrade to the nodes were push through puppet and cloning it to Gitlab
• Installed and configured ESXI servers and VM virtual servers using VM-templates to facilitate server consolidation, migration and testing.
• Creating documentation for datacenter hardware setups, standard operational procedures and security policies
• Deployed virtual machines from templates and installed configured application in the virtual machine.
• Worked on configuration and administration of NFS, DNS, Open LDAP, DHCP, Mail Servers and Web Servers like Apache HTTP & Tomcat in heterogeneous environments
• Experienced in Writing and Updating Shell Scripts and Perl Scripts. Installed and configured new hard drives and memory upgrades.
• Used Admin tool for adding and managing new users, groups, software and printers, resolving permissions issues, user and group quota.
• Perform daily maintenance routines on Linux servers, monitoring system access, managing file space and tuning the system for optimum performance.
• Wrote Perl and shell scripts to automate certain system administration tasks. Improved Linux OS deployment and management by creating customized kick start scripts and installing puppet.
• Responsible for Installation and configuration of Samba, Send mail & Apache web server.
• Installed patches and software upgrade recommended as per the security scan.Good Working Knowledge with Linux Kernel Configuration, Load balancing techniques and DR plans.
• Improve server utilization and sharing I/O resources to reduce total cost of ownership and make better use of IT assets using Power VM (Advanced Power Virtualization).
• Coordinating with SAN team to create new disk volumes for ORACLE and Sybase database teams
• Involved in decommissioning servers project as per the company procedures and update the hardware inventory database.
• Performed live migrations and consolidated the physical servers to VMware infrastructure virtual machines with shared storage across EMC clariion, Dell and Open filer SANs.
• Provide temporary and permanent sudo permissions to users depending on the job requirement and security request clearance.
• Worked on thin & thick provisioning of virtual disks and RAID technologies.
• Managed and maintained Bind DNS Master and Slave servers and DHCP servers.
• Excellent understanding of server hardware, Peripheral devices and hardware Architecture.
• Experience in providing day to day support like resolving sever hung up, file system full, troubleshooting critical issues.

Environment: Red hat Enterprise Linux 4, 5.5, 6.5,7 Shell Scripting, NFS, Samba, Puppet, SVN, GIT, AWS, Web Sphere, DNS, Tomcat, Apache, LDAP, VMware, Dell, HP Proliant server, VMware, VSphere, VCenter 5.5,5.1,ESXI 5.5,5.1,5.0

Confidential, Phoenix, AZ

Linux System Administrator/ Jr. Devops Consultant

RESPONSIBILITIES:

• Installation, configuration and administration of Red Hat Linux servers and support for the servers till build warranty period.
• Installation, maintenance and regular upgrades of Red Hat Linux Servers using kickstart based network installation
• Provided 24x7 System Administration support for Red Hat Linux servers and resolved trouble tickets on shift rotation basis.
• Provide the support of building the server, patching, user administration tasks, deployment, software installation, performance tuning and troubleshooting and KVM.
• Installation of patches and other software packages
• Monitoring system performance, tune-up kernel parameter, adding /removing /administering hosts, users, disks on DNS / NIS domain,
• Installation of Oracle Patches and Troubleshooting, Creating and modifying application related objects, Creating Profiles, Users, Roles and maintaining system security.
• Administrative tasks such as System Startup/shutdown, Backup strategy, Printing, Documentation, User Management, Security, Network management, dumb terminals and devices carried out.
• Implemented NFS, DNS and NIS on SUN Solaris servers.
• Wrote bash shell scripts for getting information about various Linux distros for migration activities.
• Installed and Configured Sendmail Utility on Linux Servers.
• Administered NFS Mounts on AIX and Red Hat Linux servers.
• Troubleshooting Backup and Restore problems Creation of LVMs on SAN using Linux utilities.
• Monitored overall system performance, performed user management, system updates and disk & storage management.
• Performed OS upgrades and Patch loading as and when required.
• Backing up and restoring files across the network.
• Deployment of new nodes using Puppet. Configured new nodes to enterprise setting. Worked on automating task-using Puppet. Application as wells as any upgrade to the nodes were push through puppet and cloning it to Gitlab.
• Installed Splunk on new installs and 300+ production servers during the change management window.
• Performed live migrations and consolidated the physical servers to VMware infrastructure virtual machines with shared storage across EMC clariion, Dell and Open filer SANs.
• Installed and configured ESXI servers and VM virtual servers using VM-templates to facilitate server consolidation, migration and testing.
• Deployed virtual machines from templates and installed configured application in the virtual machine

ENVIRONMENT: Red Hat Linux 4.x/5.x/6.x, AIX 5/6, Sun Solaris 8/9, DNS, SENDMAIL, NFS, LVM, Bash Shell.

Confidential

Jr. Linux Systems Administrator

Responsibilities:

• Worked as a System Administrator for AIX and Linux servers.
• Configured IBM p5, RS6000, 520,550,570,590,595,610,690.695 for production, staging and test environments.
• Install and configure DHCP, web (Apache, IIS), mail (SMTP, IMAP, POP3), and file servers on AIX and Linux servers
• Created and managed user accounts, security, Access Control Limits (ACL), permissions, disk space and process monitoring inRedhat Linux and IBM AIX
• Monitored Disk & Memory Utilization on AIX 5.1, 5.2
• Experience using LVM creating VGs, LVs, and disk mirroring.
• Installed and set up Oracle9i and Websphere on Linux for the development team.
• Implemented Virtualization using VMWare in Linux on HP-DL585.
• Linux kernel, memory upgrades and swaps area. Red hat Linux Kickstart Installation.
• Hands on experience of HMC & LPAR.
• System performance monitoring and troubleshooting in AIX Environments.
• Creating users, managing user permission, maintaining User & File system quota in Redhat Linux and AIX.
• User management, security planning and implementation, Backup and restore Management.
• Created Micro partitioning of processor by dividing physical processor’s computing power into fractions of a processing unit and share them among multiple logical LPARs
• Installation, Configuration & Upgrade of AIX operating systems running oracle Database.
• Worked with Database administrators to tune kernel for Oracle installations on Linux.
• Clustered multiple RS/6000 machines on AIX 5.1/5.2 using HACMP, configured HACMP cluster to keep applications running.
• Perform korn shell and Perl scripting as needed to support integration and automation as necessary.
• Installed and configured ESXI servers and VM virtual servers using VM-templates to facilitate server consolidation, migration and testing.
• Deployed virtual machines from templates and installed configured application in the virtual machine

ENVIRONMENT: Red Hat Linux 4.x/5.x, AIX 5.x Servers in IBM P570, 550, 570, 590, 595, 610, 690, 695, HACMP 5.3, Suse Linux, IBM DS4300 Storage System, ESS Shark with SAN environment