SUMMARY:

• Have 4+ years of experience as UNIX System Administrator/Windows admin in Red Hat Enterprise Linux, SUSE Linux, Fedora, Ubuntu, CentOS and Solaris, R2008 and R2012.
• Planning, Installation, Configuration, Maintenance and Administration of AIX 4.3/5.1/5.2/5.3/6.1 and Linux (Red Hat 6.0,7.0 & SUSE LEAP 42.1) and day to day system admin tasks.
• Setting up printers / remote queues / Info - print management Migration upgrades of RHEL (5.1/5.2/5.3/6.1/7.1 ), including system tuning, security, backup, recovery and upgrades of Linux.
• Installation of patches, Security fixes, packages on Linux and Windows NT/2000 Servers.
• Linux administration of core corporate SAP and WebSphere servers with Puppet.
• Linux administration of production servers with CF-Engine. CF-Engine predates Chef and Puppet.
• Worked on Group/User administration, Startup & Shutdown Scripts, Crontabs, File System Maintenance, Backup Scripts and Automation.
• Maintained the Windows 2008 R2 and 2012 Servers which included deployment, patching, server hardening.
• Designed the business continuity plan to replicate mission critical data and servers to the secondary facility.
• Installation and support of VMWARE ESX 5.0 servers which hosts the virtual servers for the test/dev/production environment.
• Creating clusters, Resource pools and adding VM's to them and installing VM Tools.
• Virtualized Windows servers 2003 & 2008 using VMware Converter 5.0 and 4.1.
• Install & configure update manager for ESXi server patching, Performance monitoring & analysis of ESXi & Virtual machines.
• Deployment/Installation/Upgradation of VMware ESX server & VC server.
• Hands-on experience in Puppet and chef.
• Updating/patching Windows Virtual Machine in VMware clusters.
• Administered and supported GitHub Enterprise version control tool.
• Experience in working with VMware ESX servers for enterprise level virtualization and Xen.
• Expertise in configuring Kickstart and Jumpstart Installation Methods.
• Installed, configured and supported WebSphere Application Server, IBM HTTP/ Apache Web Servers in AIX and Linux environments. Knowledge of Samba Servers.
• Worked extensively on creating volumes using different RAID levels using LVM in Linux, VERITAS Volume Manager and VERITAS Cluster in Red Hat Linux, Solaris and HP-UX servers.
• Experience in configuring, monitoring and troubleshooting various file systems like Ext 3, Ext 2, UFS, NFS and JFS.
• Experience in installing, updating packages in Red Hat Linux servers using RPM’s and YUM repositories.
• Good knowledge on HACMP 5.x and NIM Master and Clients.
• Use ILO/HMC for remote access of servers on Linux/AIX respectively.
• Worked extensively on Red Hat Linux DNS servers from installing BIND package, updating the BIND database and troubleshooting the problems.
• Hands on experience in installing, configuring and supporting web servers like APACHE, TOMCAT, IIS, iPlanet over DMZ (Demilitarized Zone) in order to enhance the security of the server access
• Good knowledge in Operating system level configuration of SAN using IBM Shark Storage, EMC and Hitachi technologies and also worked with NAS and HDS.
• Installation, Configuration and Administration of VERITAS Volume Manager (VxFS/VxVM/VCS), Solstice Disk Suite (SVM/SDS) and LVM.
• Have strong knowledge of ITIL processes for the administration of servers.
• Working knowledge on TCP/IP Protocols and Virtual Private Networks (VPN).
• Proficient in Implementing, configuring and troubleshooting LAN/WAN network systems using Cisco Routers and Switches including implementation of VLAN and Subnetting.
• Hands-on experience in configuring SSH and FTP server/client systems to transfer files.
• Knowledge of networking (TCP/IP, Ethernet), FTP, SFTP, SUDO, NFS, NIS, DNS, DHCP and RAID levels.
• Implementing IBM Tivoli Enterprise Console (TEC) for problem diagnosis and better performance.
• Expert in Shell scripting using bash and Perl.
• Configuration and administration of Fibercard Adapter’s and handling Linux part of SAN (SAN arrays HITACHI, EMC).
• Experienced in installation and configuration of enterprise applications using IBM Web Sphere Application server 6.x/5.x on various Linux platforms and Windows Server 2003/2008.
• Working knowledge in various Application servers including Apache Tomcat, Red Hat JBoss, Oracle WebLogic and IBM WebSphere.
• Linux-based Virtualization implementations with VMWare.
• Creating and Managing Virtual Machines and Templates.
• Configured Resource Pool, V Motion, Alerts, Alarms, NTP.
• Experience with enterprise class storage including SCSI, RAID and Fiber-Channel Technologies Installation, Configuration and Administration of HP Data Protector & Veritas NetBackup.
• Performed User Administration and Hardware setup and support of Storage and managed paging space.
• Experienced in implementing the workload Management (WLM) using cloning and clustering.
• Conducted AIX / Linux System security and auditing and did Performance Monitoring and Tuning.
• Possess strong trouble-shooting attitude and business oriented user interface.
• Excellent client relation skills and the drive to complete tasks effectively and efficiently where customer services and technical skills are demanded as well as the ability.

TECHNICAL SKILLS:

Operating Systems: Linux (RHEL 5.x,6.x,7.x SUSE GNOME, LEAP), IBM AIX 5L,6L,7L (5.1,5.2,5.3 7.1), Windows 2000/NT4.0, windows 95/98/ME/XP, VMware ESX 2.x,4.0,6.0, VMware workstation 10.x,11.x,12.1, IBM WAS

Web/Application Servers: Websphere Application Server (WAS) 3.5, 4.0, MQSeries, WebLogic, JBoss, Server, IBM HTTP Server, IDAP server, HTML, DHTML, XML, Java Script, JSP, Servlets, EJB, Rsyslog

Networking: TCP/IP, NIS, NFS, DNS, DHCP, Cisco Routers/Switches, WAN, SMTP, LAN, FTP/TFTP

Tools: Service Center, Remedy, Opsware tool, Netvalt and VERITAS Netbackup 3.5/4.0/5.1 and 6.5, Lagato Netbackup and BMC Patrole, Nagios, Puppet, Chef

Cluster Services: Red Hat Cluster Suite, VERITAS Clusters, Sun Clusters

PROFESSIONAL EXPERIENCE:

Confidential, MI

Senior Linux Administrator

Responsibilities:

• Installation and Configuration of Red Hat Enterprise Linux 5.x,6.x,7.x and IBM AIX 5L 5.x operating systems on large distributed environment. Installing, testing and patching existing RPM’s.
• Responsible for daily activities which included administration and maintenance of Enterprise and Advanced Servers (ES/AS) running Red Hat Enterprise Linux.
• Worked on automation of puppet and chef script.
• Linux administration of core corporate SAP and WebSphere servers with Puppet.
• Linux administration of production servers with CF-Engine. CF-Engine predates Chef and Puppet.
• Provided Administration support for server running on IBM AIX 5L 5.3 at other facilities.
• Installed and Configured Red Hat Enterprise Linux 5.2 in Dell Poweredge 2970 and R905, Involved in System Analysis and Performance Monitoring of Red Hat Linux.
• Install and configure DHCP, DNS (BIND, MS), web (Apache, IIS), mail (SMTP, IMAP, POP3), and file servers on AIX and Linux servers.
• Linux kernel, memory upgrades and swaps area and performed Red hat Linux Kickstart installations
• Mass Build of Linux OS servers using Kickstart /Jumpstart automation application.
• Creating logical volumes, extending the filesystems using LVM.
• Creating Templates from VM's, deploy VM's from templates and allocate resources.
• Monitoring of Virtual Machine's & ESX servers ( CPU, Memory, Disk and Network Utilization) for Security.
• Setting up Users and Groups for access to the Virtual Center.
• Performance tuning of VMware servers, Virtual sessions and management of server resources between Virtual Machines.
• Root Cause & System Log Analysis and reporting.
• Organize tasks, events and Configuring alarms.
• Setup and configure windows 2012 servers for new print management solution.
• Plan and Implement the new solution replacing existing print solution.
• Subject Matter expert for Managed print services and scripts to Helpdesk.
• Performed enterprise print transition, worked with end users, vendors and service providers.
• Ensure smooth operation of all Servers, printers and other equipment without any interception and accessible 24/7.
• Performed all routine system monitoring, verifying the integrity and availability of all hardware, server resources, systems and key processes, reviewing system and application logs.
• AD support in establishing and managing accounts, folder creation/permission, OU permissions, and Printer access.
• Implemented day-to-day tasks in Red Hat Linux that include upgrading rpms, kernel, HBA driver, configuring SAN Disks, multipathing and LVM file system.
• Installing, Configuring and Administering WebSphere Application Server ND/XD 6.1/7.x/8.x on Sun-Solaris, RHEL and Windows platform for all Dev., QA, UAT & Production environments.
• Installed/Configured the JBOSS application server, WebLogic server; Managed tuning and performance of high profile applications running on them.
• Installed and Configured Multiple OS using VMware ESXi on Dell using Virtual Center Server and VI client.
• Building Physical as well as Virtual (VMware) Servers.
• Deployed latest patches for, Linux and Application servers, performed Red Hat Linux Kernel Tuning.
• Migrated database applications from Windows 2000 Server to Linux server.
• Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Configuration and administration of LDAP, NFS and NIS in Linux and also implemented Samba for sharing of resources between Linux and Windows environments.
• Installation and configuration of tomcat and Apache Web Server.
• Implementation of Samba to help printing and file sharing in the mixed Environment.
• Provided production support of Apache and JBoss including installation, configuration, and management and troubleshooting.
• Hardware Maintenance and System Administration of existing RS 6000 running AIX (40 systems in Network)
• Patch Management, Package Installation/Upgrades and Kernel upgrades
• Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
• 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.
• Handling problems or requirements as per the ticket (Request Tracker) created.
• 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.
• Monitored daily backups and maintained offset backup for recovery in case of a system crash.
• Upgraded minor versions of Apache to remediate security vulnerabilities.
• Developed UNIX shell scripts to automate the WebLogic Administration (recycling the application server, deploying applications, logs rotation, monitor application state).

Environment: Red Hat Enterprise Linux 4.x,5.x, VERITAS Cluster Server, Veritas Volume Manager, Oracle 11g, HP UX, MS Windows Server, JBoss, Tomcat, Apache, Weblogic, IBM WebSphere Application Server ND/XD V6.x/7.0/8.x, WebSphere ODR, IBM HTTP Server6.0, Wily Introscope, TPV, AS ES,CentOS 5.1/5.2/5.3,AIX 4.3,5.1,5.2,5.3,

Linux/Unix Admin

Responsibilities:

• Extensive experience on Implementations, troubleshooting, and proactively monitored Red Hat systems for the Enterprise.
• Hands on experience on installation and configuration: Linux, Red Hat Enterprise Linux 4/5/6/7, SLES, CentOS, Ubuntu.
• Installation of Patches on the servers running different applications and validating that the server is fully patched with all firmware and OS critical updates.
• Setup and configured network TCP/IP on Red Hat LINUX, CentOS and AIX servers including RPC connectivity for NFS. Created mount points for Server directories, and mounted these directories on the Servers.
• Setup of full networking services and protocols including NIS/NFS, DNS, SSH, DHCP, NIDS, TCP/IP, ARP, applications, and print servers to insure optimal networking, application, and printing functionality.
• Clustered multiple RS/6000 machines on AIX 5.1/6.1 using HACMP, configured HACMP cluster to keep applications running.
• Performed deployment activities, environment support including installation, configuration diagnostics, planning and upgrades for JBOSS Application Server.
• Perform daily TSM, EMC, SAN Administrator duties to ensure all information processed through systems and databases are efficient.
• Installed and setup CUPS, LPD, configured local and remote printers.
• Installation and configuration of windows 2000 server /windows 2000 professional windows XP /windows 98.
• Coordinating network, creating users account, assigning rights, sharing permission and managing profiles.
• Creating and configuring network connection-using TCP/IP, IPX
• System policies and hardware profiles, hard disk configuration for fault tolerance, disk mirroring and backup the data using BACKUP devices.
• Created users, manage user permissions, maintain User & File system quota on Linux servers.
• Worked on Failover clustered servers for RED HAT clusters.
• Configured Multipath for SAN. Recompile the RDAC driver once harden the server.
• Worked on migration of VMware ESXi 4.0 to vSphere ESXi 4.
• Performed server rack mounting and managed /retired old rack optimized servers.
• Administered NFS Mounts.
• Wrote Shell Scripts to check the security setting of the server and changing the server settings.
• Acquired & Initialized LUNs in clustered & stand-alone environments.
• Installation and configuration of tomcat and Apache Web Server.
• Collect and analyze current system settings. Evaluate, test, and deploy audit remediation settings.
• Monitor ticket queue to attend user and system calls, attend team meetings, change control meetings to update installation progress, and for upcoming changes in environment.
• Documented all the steps done as part of the Server Hardening process.
• Create change order request and exception request for Hardening production servers and resolve it once Hardening is completed.
• Implementation of Samba to help printing and file sharing in the mixed Environment
• Document and maintain the inventory using asset management techniques.
• Make recommendations to improve and maintain audit processes

Environment: Red Hat Linux (RHEL 4/5/6), RedHat Satellite Server 6, Logical Volume Manager, Veritas Cluster Server, Red Hat Cluster Servers, Oracle, AIX 5.3L, Windows, Apache, Tomcat, windows server 2000, 2003, 2008, VMware ESX 2.x, HP-UX.

Jr Linux Administrator

Responsibilities:

• Installation, configuration and administration of 1000+ Red Hat Linux servers and support for Servers.
• Installation, maintenance and regular upgrades of Red Hat Linux Servers using kickstart based network installation.
• Unix/Linux User ID Administration, providing Sudo access, Troubleshooting User’s login and home directory related issues.
• Accountable for Monitoring memory, CPU and Disk Utilization Statics on Sun Servers and analyze the performance.
• Worked on tools such as Remedy, HP service center and Peregrine tool.
• Worked on management/quality related documents for BT project.
• Monitoring system performance parameters using iostat, vmstat and prstat.
• Provided 24x7 System Administration support for Solaris based servers and Red Hat Linux 3.x, 4.x servers and resolved trouble tickets on shift rotation basis.
• Performed system administration of UNIX servers by using Operating Systems of Solaris 7/8.
• Managing SUN Solaris, Compaq and Linux workstations and servers.
• Monitoring the alerts of all Unix/Linux flavors like SunOS, RHEL, AIX and HP.
• Setting up Oracle 10g server in Linux/Unix environment.

Environment: Red Hat Enterprise Linux 4.x,5.x, CentOS, Debian, Cisco, Veritas Cluster Server, Oracle 9i, MS Windows 98/2000/NT/XP, Oracle RAC/ASM, Porta-one soft switch, MS Windows Server 2003, 2008.