SUMMARY:

• IT Professional with over 7 years of experience as a RHEL 3.x/4.x/5.x/6.x, CentOS, Ubuntu, Sun Solaris 8/9/10 SLES 10/11 & UNIX IBM AIX 7.x Power7, 6 platforms System Administrator/Engineer as well as worked as DevOps Engineer.
• 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 .
• 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.
• 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.
• Worked on Apache/PHP/MySQL/Postfix/Sendmail/DNS/BIND.
• 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.
• Strong knowledge in DNS, DHCP and IP addressing. Experience administering Active Directory and group policies.
• Expertise in systems performance monitoring & tuning: 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.
• 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.
• Experience working on various cloud platforms like AWS, Rackspace, AZURE.
• Experience working on Migration from a physical data center environment to AWS.
• Worked on installation and configuration of DevOps tool Puppet .
• Extensive knowledge of NIM, Jumpstart, Kickstart.
• 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, Centos 4/5, AIX, Ubuntu, SUSE, Cent OS, Windows XP

Web/Application Server: Apache, Tomcat, Websphere, Weblogic, and J2EE

DevOps: Puppet, Chef, Jenkins, Nexus, Hudson, SVN, GIT

Cluster Server: Veritas Cluster, Redhat cluster

Languages: HTML, Bash, Shell, Python, Ruby Scripting

Network Services: DHCP, Sendmail, HTTP, Samba, NIS, NFS, DNS, SSH, FTP, LAN, WAN, TCP/IP, TELNET

Virtualization: VMware and VSphere

Monitoring Tool: Nagios, Cacti

Firewall: IP-Chains, Iptables, NAT

PROFESSIONAL EXPERIENCE:

Confidential, Berkeley Heights, NJ

System Engineer (UNIX/ LINUX)/ DevOps

Responsibilities:

• Installation and configuring Redhat 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.
• Effective utilization of change management in installing or configuring, packages, patches or 3rd party tools on Linux.
• Performed monitoring for servers, applications and switches using Nagios.
• Configuration of network yum repository as well as local repository.
• Managed Linux and Windows virtual servers on AWS EC2 and supported application on cloud.
• Installed and configured DevOps tool Puppet and used Puppet for the automation of the workload and Created SVN and GIT repository.
• 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.
• 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
• Responsible for Installation and configuration of Samba, Sendmail & Apache web server.
• Installed patches and software upgrade recommended as per the security scan.
• Worked on think provisioning, VMFS expansion 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, 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, Coppell, TX

System Engineer/DevOps Consultant

• Worked on migration from physical to virtual (P2V) environment for Red Hat Linux.
• Worked on switching production to virtual from bare metal, as well as decommission and shutdown legacy physical servers.
• Worked on Recovery from failed restore, post deployment VM Setup.
• Create scripts to automate daily tasks like creating LAMP stack VPS’s, chrooted sftp, ZFS backup scripts, VPS load testing, SSL installations, ecommerce search engine index replication, apache-solr setup, Mysql replication.
• Installed and configured Apache Webserver in a LAMP stack.
• Operationally supported systems in AWS Networking and security administration and troubleshooting.
• Implemented Puppet for Package and configuration management.
• Configured and used automation tools like PUPPET to push updates like sudo, ssh. sendmail and patches.
• Designed, built, and deployed multitude applications utilizing AWS stack focusing on high-availability, fault tolerance, and auto-scaling.
• Worked on Migration of servers from a physical data center environment to AWS.
• Automated routine tasks using scripting languages like Ruby and Python
• Monitoring and service issue resolution of LAMP stack web servers, both shared and VPS.
• Worked on Puppet extensively for deployment for servers, creating on custom scripts and managing changes through Puppet master server on its clients.
• Assembled Puppet Master, Agent, and Database servers on multiple Red Hat Enterprise Linux Platforms.
• Created profiles in Puppet and pushed them across all the servers in UNIX and Linux environment.
• Used Puppet Master to keep in sync configuration on hosts running agents.
• Change root password on all servers from centralized Puppet master server.
• Managed user/group and sudo access on the Linux operating system.
• Setup static IP address for server when there is a new server build.
• Troubleshoot network issue from the OS standpoint using netstat, ping, traceroute, and tcpdump commands.
• Document process and procedures for system and database usage.

Environment: Red Hat Linux 3/4, KVM, Acronis, Solaris 8, Sun Enterprise Servers, SUN FIRE 6800/E6500/E4500, Sun Sparc1000, IBM RS/6000, Disk Suite, Veritas Volume Manager 4.0, LDAP, DNS, NIS, NIS +,SNMP, Shell scripting, SENDMAIL, Apache, Puppet, WebSphere, Sun and Veritas Clusters, AWS

Confidential, Bellevue, WA

Linux/ Unix Administrator

Responsibilities:

• Supported of infrastructure consisting of RHEL 4.x 5.x, 6.x, CentOS and Ubuntu 10.X and 12.04.
• Worked on Installation of RHEL OS on Standalone servers using kickstart installation.
• Installed and configured performance monitoring tool Nagios.
• Worked on Setting up root disks/mirroring. Post Kickstart server hardening, NetBackup Client installation, SSH key exchange, SUDO skills and scripting.
• Setup of disk based File systems using LVM and VxVM.
• Creation, extension, configuration and maintenance of LVM and VxVM in Solaris and Linux environment.
• Worked on Package management like Install, remove and update and querying packages using RPM tool.
• Worked on creation clustering between ESX hosts in VMware environment.
• Created of RHEL rpm package repository server for Patching.
• Worked on Setting up server NIC’s (NIC Bonding, IPMP, Link Aggregation).
• Created Virtual machines (RHEL, Ubuntu) using template and cloning.
• Firmware and BIOS upgrade of HBA cards (Qlogic) and serial processors.
• Performed DNS changes for IP address and hostnames in DNS master server.
• Developed scripts for automation and monitoring purpose in PERL and Python.
• Writing Shell Scripts for managing day-to-day transactions & for automation of routine tasks.
• Maintained Load balancing, high availability, failover functionality and disaster recovery included changing IP address of the web and app server machines, which caused change in the virtual host and http transport configurations.
• Monitored server and application performance & tuning via various stat commands (top, mpstat, prstat, nfsstat, prtconf, prtdiag, iostat, top, printmgr, hpimliview, dmidecode, smc etc) and tuned I/O, memory etc)
• Configured File Systems, users and group for Oracle and Websphere
• Configuration and administration of Fiber card Adapter’s and handling of SAN (SAN arrays, HITACHI, EMC)
• Performance tuning, troubleshooting and monitoring bottlenecks of network, CPU, memory and Disk.
• Troubleshooting database servers’ performance issues and taking care of DBA Activities.

Environment: HP Blade servers, DELL Power Edge 2850, 2950, R805, R910, R210, R310, T310, IBMRS/6000, pSeries 520, 550, 570, 575, 590, Sun Enterprise 420R, 450, 3500, 4500, 5500, 6500 Servers, Cisco Blade servers, SAN storage, RHEL 6.X, Cent OS, Ubuntu 10.X, 11.X, 12.X, Solaris

Confidential, CHANTILLY, VA

Linux System Administrator

• Installation, configuration and administration of Red Hat Linux servers and support for Servers.
• 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.
• Managed Compaq and Linux workstations and servers.
• 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.
• Installation and configuration of Oracle 7.x/8.x.
• Implemented NFS, DNS and NIS under SUN.
• Wrote bash shell scripts for getting information about various Linux servers
• Installed and Configured Sendmail Utility on Linux Servers.
• Administered NFS Mounts.
• 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

Environment: Red Hat Linux 4.x, Oracle 7.x/8.x, SUN, DNS, Sendmail, NFS, Solaris, LVM, Bash, Shell.

Confidential, Jersey City, NJ

Jr. Linux/AIX Systems Administrator

• Worked as a System Administrator for AIX, UNIX, and Linux servers
• Configured IBM p5, B80, RS6000, 520,550,570,590,595,610,690.695, z/VM 5.4 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 in Redhat 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.

Environment: IBM zSeries, z/VM5.1, AIX 5.2 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