Summary:

• 8 plus years of work experience in Linux System Administration
• Extensive Experience in Installation and Administration of SLES 9/10/11 and Red Hat RHEL 4.0/5.0/6.0 Server family.
• Good knowledge in writing Shell scripts Bash to automate routine tasks like Selective file removal, disk space utilization Process management.
• Solid understanding of RPM, building, maintaining, and installing packages.
• Familiar with writing extensions for RPM, building virtual packages, and fixing dependency loops
• Install and manage software and hardware RAID disks to improve fault tolerance and performance
• Hands on Experience on VMWARE Environment.
• Experience in converting physical server to virtual in VMware. P2V
• Experienced in Installation and configuration of Samba, Send mail, Apache web server, Tomcat web server
• Configured servers to join Active Directory for single sign on.
• Configured services like DNS, NIS, NFS, LDAP, Send Mail, FTP, Remote access on Red Hat Linux and AIX.
• Creating, maintaining user profiles, security, rights, Backup of data and Disaster Recovery
• Experience in Creating, Mounting and Unmounting new File Systems.
• Ensured system security by hardening and auditing the systems as per guidelines in Red Hat Linux also experienced in system analysis, troubleshooting and performance tuning of operating systems.
• Performed hardware and software installs upgrades
• Supported installation of Oracle database RAC on Linux servers associated with DBAs
• Experience with configuring firewalls using Linux. Familiar with configuring advanced features such as NAT, port redirection, and logging
• Extensive hands-on experience in Logical Volume Manager LVM , OS Upgrades.
• Strong Knowledge in implementation of enterprise storage solutions SAN, NAS .
• Troubleshoot, patch and automate systems in a large distributed environment using Lumension Patch agent.
• Used netstat and other tools on specific hosts to determine increased connections to specific processes, customer specific, for attack traffic
• Experience with switches and routers from various vendors like Cisco, Dell, and HP
• Ability to quickly adjust priorities and take on projects with limit specifications
• Maintain 24x7 uptime in production server's environment
• Effective team player with excellent logical and analytical abilities
• Excellent written and verbal communication skills, inter-personal skills and self-learning attitude

Technical Skills:

Professional Summary:

Confidential

Linux Administrator

• Supporting 240 Linux servers.
• Responsible for creating, cloning and decommissioning servers in the environment included RHEL, SLES, and Centos servers.
• Completed project for integrating active directory user accounts with Linux servers using samba winbind, and also centrify.
• Changed all the systems in the environment to use STATIC ip instead of DHCP.
• Responsible for setting up virtual or physical appliances.
• Monitor systems using Orion Monitoring Sstems using snmp.
• Directly responsible for monitoring, maintenance, troubleshooting, patching, testing and day- to-day management of Red Hat Linux, Ubuntu, Centos, and Suse operating systems on x86 and x64 architectures.
• Convert old physical servers to virtual using VMware converter.
• Involved in moving some servers from leased datacenter to new datacenter.
• Involved in migrating virtual netware virtual machine from SLES Servers to Esxi 5.5 host for 200 branch, also migrated Netware vms from Esx 3.05 host to Esxi 5.5.
• Responsible to set up nfs shares.
• Keep systems up to date to meet information security compliance.
• Completed the project for security hardening all the Linux servers as per audit requirement, which included disable root access, grant required privileges to users, password complexity, password expiration, account lock for numerous bad attempt, time server sync, remot logging etc.
• Setup remote logging for critical servers in the environment.
• Automate patching on weekly basis using Lumension Patch agent.
• Creating, unlocking and deleting user accounts.
• Maintaining inventory for all systems, including rack location, serial numbers, app owner, ipaddress.

Environment: Red hat Enterprise Linux 4, 5, 6 and 7 beta, Windows, SuSe Linux Enterprise Server, CentOs, NFS, Samba, Web Sphere, DNS, Apache, Active Directory win 2008 R2, VMware, Esxi 5.X, Dell, HP ProLiant server

Confidential

Linux Administrator

Responsibilities:

• Installation and configuring Redhat Enterprise Linux 4/5/6
• Installed, Configured Upgraded Linux, RHEL and SLES operating system.
• Installed, upgraded and configured infrastructure software JBoss, Tomcat, MySQL, etc.
• Performed automated installations of Operating System using kickstart for Linux. Remote monitoring and management of server hardware
• Created new file system, managing checking data consistency of the file system.
• Installation and administration of DNS, NIS DHCP servers
• Implementing and Maintaining Apache web server with HTTPS
• Hands on Experience in Linux administration Support, Performance tuning monitoring, problem analysis resolution
• Used Clarion san to create filesystems on Redhat Linux.
• Configured EMC Clarion san luns using multipath software EMC powerpath
• Maintain system integrity and maximize uptime
• Ability to configure all the services including NFS, FTP, Web servers, samba server, RAID software hardware Configuration
• Good Knowledge in writing scripts to check system connectivity, database connectivity, file system usage, and log files
• Associated with DBAs for installation of Oracle database RAC on Linux servers for tuning, backup and restore
• User, Group Administration and Advanced File Permissions
• Maintain security for the networked environment while allowing users to access all data and software remotely
• Extensive customer interaction to determine needs, problems, and effectiveness of repairs upgrades
• Planning and implementation of new systems and upgrades to existing systems
• Configuring servers and Clients Configuration of Protocols, maintenance of installed applications on the Network
• Troubleshooting and configuration of Local and Network based printers and Configuration of Storage area Networks SAN
• Security implementation through ACL, IPTABLES and TCP Wrappers
• Worked on Group/User administration, Crontabs, File System Maintenance, Backup Scripts and Automation.
• Hands on experience in providing day to day support like resolving sever hung up, file system full, troubleshooting critical issues
• Effective utilization of change management in installing or configuring ,packages, patches or 3 rd party tools on Linux

Environment: Red hat Enterprise Linux 4, 5, 6 Windows, Shell Scripting, NFS, Samba, Web Sphere, DNS, EMC Clarion, Apache, LDAP, VMware, Dell, HP ProLiant server

Confidential

Linux Administrator/AIX Administrator

Responsibilities:

• Installed Linux 5.4 and 5.5 and maintain system integrity and maximize uptime
• Involved in patching RHEL 4, 5 servers, Decommission of servers and Adding servers to cacti monitoring tool and provided 24/7 on-call support
• Logical Volume Management LVM
• Configure OA's,ILO's,Firware Downgrade or Upgrade, Virtual Media and Hard Ware Raid 1 0 on the HP, dell ProLiant Racks Blades for Linux installation
• Have installed and maintained apache and tomcat server and Ability to configure all the services including NFS, FTP, Web servers, samba server, RAID software hardware Configuration , Effective implementation of Samba and hands on experience on troubleshooting ssh on Linux.
• Good Knowledge in writing scripts to check system connectivity, database connectivity, file system usage, and log files
• Associated with DBAs for installation of Oracle database RAC on Linux servers and for tuning, backup and restore, and helped in setting kernel parameters for oracle installation
• Troubleshooting and configuration of Local and Network based printers
• Expert in creating Users, providing Group Administration and Advanced File Permissions
• Maintain security for the networked environment while allowing users to access all data and software remotely
• Extensive customer interaction to determine needs, problems, and effectiveness of repairs upgrades
• Effective utilization of Disk management tools like VERITAS volume manager, logical volume manager
• Effective utilization of monitoring tools to determine system and network health
• Tuning of kernel parameters as per the application requirement e.g. oracle ,web sphere
• Installed and configured Red hat Linux on Dell ProLiant servers using Kick Start
• Hands on experience in providing day to day support like resolving sever hung up, file system full, troubleshooting critical issues
• Effective utilization of change management in installing or configuring ,packages, patches or 3 rd party tools on Linux
• WebSphere application servers and Apache webservers in the environment
• Worked with pSeries and AIX in SAN environment
• Logical Volume Management LVM administration.
• Performed Servers consolidation and virtualization using VMware virtual infrastructure, VMware ESX, Virtual Center, VM tools.
• Supported both medium p550/570 and large pSeries p595 systems
• Installed and configured AIX on power platforms, VIO servers, and Hardware Management Console HMC HMC backups Performed using DVD-RAMs
• Involved in PowerVM setup and including dual VIO servers and designing of Power HA software
• Built, configured and supported multiple LPAR's as per the client requirements
• Worked on pSeries NPIV in a virtualized environment
• Implemented and configured sudo on Linux

Environment: Redhat Enterprise Linux 4, 5, 6, BIND, Windows, Shell Scripting, NFS, Samba, Weblogic, DNS, Apache, HP ProLiant server, AIX v5, pSeries 550, 570, 595, SAN, NIM, NetApp, HPQC, WebSphere, Apache Webserver, HACMP, IBM AIX 4.3, 5.1, 5.2, Tivoli Storage Manager

Confidential

UNIX Administrator

Responsibilities:

• Installation, configuration and administration of 500 Redhat Linux servers and support for Servers.
• Installation, maintenance and regular upgrades of Redhat Linux Servers using kickstart based network installation
• Configured, and administered multiple production Redhat 3.0/4.0 servers across multiple platforms.
• Supporting Oracle 8i/9i database server applications and processes on Redhat 3.0/4.0 servers.
• Installed the Redhat 3.0/4.0 operating system and set up the Oracle environment.
• Installed, configured and administered Solaris 8/9.
• Supported Disk Management, VERITAS volume Management, Patching, user administration, security on Solaris 8/9
• File system management using VERITAS volume manager.
• Architecture, Design and core configuration of the Production Server Systems, which involved sizing file systems and hardware Implementation after evaluating Support Matrices for Storage.
• Configured Redhat Clusters on RHEL 3.0/4.0 using Cluster Manager.
• Implemented Oracle RAC high availability application cluster on RHEL 4.5
• High availability designing using VERITAS Cluster Server on Redhat Linux and Solaris Servers
• Troubleshooting NFS, NIS, Samba, DNS, DHCP, LDAP, MySQL and network problems.
• Configuration of ASM Advance System Management on IBM x-Series servers for Redhat OS
• Installation, configuration and maintenance Redhat Linux on HP and IBM Blades.
• Kernel fine tuning for maximum files, oracle database installation, ip forwarding, network issues.
• Configured PXE environment for Kickstart installation for Redhat Linux. Writing shell scripts for the routine tasks.
• Providing security for servers using iptables, ssh, kerbos
• Troubleshooting weblogic, tibco, and java related problems in production, staging and QA environment
• Designing and implementing security of the production servers using IP chains, Security monitoring, developing scripts, processing the job automation. Scheduling upgrades

Environment: RHEL2.1/3/4, Solaris10, Windows, Shell Scripting, NFS, and DNS, HP ProLiant servers, bash and Perl scripting.

Confidential

System Administrator

Responsibilities:

• Responsible for installation and maintenance of Solaris 8.0/AIX 4.3 servers.
• Involved in eliminating TCP/IP as single point of failure by implementing serial networks and non-ip based networks.
• Managing cron jobs, at Jobs, batch processing and job scheduling.
• Networking service, performance, and resource monitoring.
• Monitored trouble ticket queue to attend user and system calls.
• Attended team meetings, change control meetings to update installation progress, and for upcoming changes in environment
• System backup management using IBM ADSM Backup Server.
• Integrated SUN Solaris, AIX and Windows NT servers.
• Implemented LANs and WAN for Corporate Data Centers.
• IBM RS/6000 SP System Software Maintenance AIX System Dump Generation and sending System Dump to AIX System Support Center.
• Logical Volume Management LVM of AIX.
• Disk Management on AIX using SMIT.
• Performed maintenance on AIX RS/6000 machines, such as tape and hard drive replacements, adding print queues, and making and changing logical volumes and file systems.

Environment: Solaris 8.0, AIX 4.3, Suse 9, oracle, MySQL, Web logic

Confidential

Red hat Linux Administrator

Responsibilities:

• Installing, Configuring, Troubleshooting Maintaining Linux Servers.
• Done installation and Configuration of Apache Web server.
• Configuration and Maintenance of security.
• Configuring and scheduling backups.
• Submitting various types of cron jobs.
• Deploy implement NIS, NIS and DNS environment.
• Implementation and Maintenance of Proxy Server under Linux.
• Handled issues regarding Samba Servers.
• Perform hardware and software installs upgrades.
• Setup and configured Apache to integrate with IBM WebSphere in load balancing environment.

Environment: RHEL 2.1, Redhat Linux 8/9, IBM x series and HP ProLiant, Windows

Confidential

System Administrator

Responsibilities:

• Administration and support of Unix Servers including IBM AIX, Sun Solaris and HP-UX. Duties include user administration scheduling jobs using crontabs, file system maintenance, scripting and automation.
• Worked in a fast-paced 24x7 production environment comprising IBM servers
• Provided UNIX infrastructure, operations and support for IBM p630, p670, p690servers running AIX 5.1, 5.2.
• Performed installation, periodic maintenance updates and applied APAR fixes.
• Involved in migration team for migration from AIX level 4.3.3 to 5.2.
• Configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager LVM commands.
• Maintained availability, increased capacity performance of production machines by upgrading their hardware firmware.
• Configured backup/archive policies using backup utility and mksysb images of root volume group to meet data archiving requirements and disaster recovery readiness.
• Involved in Disaster Recovery, DataStage Upgrade, UNIX Infrastructure and WebSphere.
• Managed Printer queue and Fax servers
• Involved in maintaining high availability clustering environment using HACMP Cluster software.
• Perform security audits of critical corporate databases and disaster recovery procedures.
• Performed administrative tasks such as System startup/shutdown, Backup strategy, Printing, Documentation, User Management, Security, Network management, dumb terminals and devices.

Environment: AIX 4.3.x, 5.1, 5.2, HP-UX 11i, Sun Solaris 8,, p630, p670, p690, Tivoli Storage Manager 5.x, NIS, NFS, HACMP