SUMMARY

• A System Administrator with 6+ years of experience specialized in Network Administration and Application Support on Redhat - Linux, HP-UX, CentOS, Ubuntu, Solaris 7, 8, 9, 10 with SUSE Linux, x86 servers and Windows environments.
• Providing 24X7 On-call Production and Customer Support including trouble-shooting problems related to Linux servers and Windows servers.
• Planning, Installation, Configuration, Maintenance and Administration of Linux (Redhat 6.x,7.x ) and day-to-day system admin tasks.
• Setting up printers / remote queues / Info-print management Migration upgrades of LINUX, including system tuning, security, backup, recovery and upgrades of Windows and Linux.
• Configured Volume groups, logical volumes and file systems on Linux
• Experience with system management solution Redhat Satellite Server.
• Installation of patches, Security fixes, packages on Linux and Windows NT/2000 Servers
• Maintain and use NIM Master for installs and upgrades. Plan and implement service updates
• Expertise in Planning, Installation, Configuration of IBM HACMP v 5.x & 6.1 Including problem-solving and disaster recovery in detecting and reacting to failure events, allowing the system to stay available during random, unexpected software problems and also configured to react to hundreds of system events. Experience includes TCP/IP Networking Parallel System Sport Programs (PSSP) which supports best practices in HACMP - High Availability Clusters.
• 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).
• Developed, Architected, and automated deployment of Splunk in large AWS Linux environments.
• Used Hardware Management Console (HMC version 7) to build and partition the P5,P6 and P7 servers.
• Extensive hands-on background in AIX Logical Volume Manager (LVM), OS Upgrades and Servers Disk Crash Recovery mksysb (AIX)
• Linux-based Virtualization implementations with VMWare.
• 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 Monitoring system Access and Monitoring servers by using tools like Tivoli, and Concord.
• Experience in configuration of NIS, DNS, DHCP, NFS / ZFS, LDAP, SAMBA, SQUID, post fix, send mail, ftp, remote access, security management and Security trouble shooting skills.
• Installed Web Sphere Application Servers on Linux and Windows.
• Experienced in implementing the workload Management (WLM) using cloning and clustering
• Conducted 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 (RedHat 5.x,6.x,7.x SUSE), Solaris 8,9 IBM AIX (5.3,6.1,7), Windows 2000/NT4.0, windows 95/98/ME/XP, VMware ESX 2.x, 3

Hardware: IBM RS/6000, IBM ESS (Enterprise Storage Server), DS8000, IBM 3494, 3583 Automated Tape Library, Brocade, SUN Enterprise 450, SunFire 4500,V880, V480, E420R, E450, E250, HP DL 380s and 580s,EMC Symmetrix, Hitachi arrays, Backup Devices, Ethernet Hubs, Routers, Repeaters, Jukebox, Printers DELL Poweredge 1650, 2850, 2950, 6400

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

RDBMS: DB2, Oracle 7.x/8.0/9i, MS-SQL Server 7.0/6.5 and MS-Access 97/95

Programming Languages: C, C++, Java, Servlets, Jsp, EJB, VB, JavaScript, HTML, Pearl and Shell, Python programming.

Applications: HACMP, Samba, Tivoli (TSM), Veritas, NetBackup, Veritas Volume Manager, LVM

PROFESSIONAL EXPERIENCE

Confidential - Pittsburgh PA

Linux Administrator

Responsibilities:

• Building Physical as well as Virtual (VMware) Servers.
• Mass Build of Linux OS servers using kickstart /jumpstart automation application.
• Installation of Oracle 11g and Sybase open-client, Apache 2.x on Linux environment.
• Worked on Installation/Configuration/Administrated VMware ESXi 5.1/5.5 & 6.0 and migrated existing servers into VMware Infrastructure.
• Installed and configured Redhat Satelliteserver for package transfer across servers, to store client's system profile and to control other servers in the network
• Configured Kickstart server and updating/applying patches to the servers using Redhat Satellite server.
• Creating new groups in Redhat Satellite server and adding servers to configured groups
• Deploy Redhat Enterprise using Kick start installations & implement Redhat 6.x/7 also Build and configured migrations of Linux (V2V, P2P and Lift and Shift on RHEL 6.x/7
• Develop, Architect, and Deploy Splunk in large AWS Linux environments.
• Integrate Splunk with a wide variety of legacy data sources.
• Experience with Splunk Searching and Reporting, Knowledge Objects, Administration, Add-On's, Dashboards, Clustering and Forwarder management.
• Worked extensively with Network File System (NFS) for storage.
• Creating logical volumes, extending the filesystems using LVM.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Patch Management, Package Installation/Upgrades and Kernel upgrades
• Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
• Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
• Installed/Configured the WebSphere server, JBoss application server, Weblogic server; Managed tuning and performance of high profile applications running on them.
• 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.
• Installation, Configuration and managing firewalls like Fortinet, ZyWall, SonicWall, Anti Spam, Web filtering, Port forwarding.
• Handling problems or requirements as per the ticket (Request Tracker) created.
• Installed & configured containers, zones with in the SUN Solaris 10 Zetta Byte File System(ZFS). Used the Solaris 10 Service Management Facility (SMF) to simplify management of various system services.
• Configuration and administration of LDAP, NFS and NIS in Linux and also implemented Samba for sharing of resources between Linux and Windows environments.
• Writing shell scripts for Automated Back- ups and Cron Jobs.
• Installation and configuration of tomcat and Apache Web Server
• Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostat etc.) and tuned I/O, memory, etc.
• Maintained proper documentation of all the activities carried out during the project.

Environment: Red Hat Enterprise Linux 6.x,7.x,8, Solaris 8, 9, VERITAS Cluster Server, Veritas Volume Manager, Oracle 11g, HP UX, MS Windows Server, JBoss, Tomcat, Apache, Weblogic

Confidential, Irving TX

Linux Administrator

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 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.
• 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
• Configuring IP connectivity, routing, checkpoint firewall and network interfaces. Also maintaining network connectivity of servers.
• Implemented Network File System (NFS) for file sharing and network installation
• Day to Day activities included handling Security issues like stale UNIX account Cleanups, 90 day password changes, setting max age and min age, creating a list of umask permission for various users and troubleshooting, Patching, Upgrades and Back-ups when required
• Responsible for backup of all servers and recovery of all servers
• Configured clustering by using Veritas Cluster Server (VCS).
• Managed Storage Area Networks (SAN). Managed nodes running under SAN environment through HACMP
• 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, mysql, Windows, Veritas Volume Manager, Jaspersoft, Veritas Net backup, Ksh/Perl programming, DNS, NIS, NFS, Apache, Tomcat, windows server 2000, 2003, 2008, VMware ESX 2.x,HP-UX.

Confidential, Maple Grove, MN

Linux Administrator

Responsibilities:

• Administered, maintained Red Hat 4.0, 5.X, 6.X CentOS 5/5.1/6, Ubuntu troubleshooting hardware, operating system, applications & network problems and performance issues
• Deployed latest patches for, Linux and Application servers, performed Red Hat Linux Kernel Tuning
• Install and configure DHCP, DNS (BIND, MS), web (Apache, IIS), mail (SMTP, IMAP, POP3), and file servers on AIX and Linux servers.
• Migrated database applications from Windows 2000 Server to Linux server
• Implementation of Samba to help printing and file sharing in the mixed Environment
• Installing and setting up Oracle9i on Linux for the development team.
• Installed Web Logic 9i with SP5 Server and configured Domains, Admin and managed servers for Applications to be deployed.
• Provided production support of Apache 2.2 and JBoss including installation, configuration, and management and troubleshooting.
• Implemented virtualization using VMware in Linux on HP-DL585 and IBM-z/VM series.
• Linux kernel, memory upgrades and swaps area and performed Red hat Linux Kickstart installations
• Hardware Maintenance and System Administration of existing RS 6000 running AIX (40 systems in Network)
• Implemented day-to-day tasks in RedHat Linux that include upgrading rpms, kernel, HBA driver, configuring SAN Disks, multipathing and LVM file system
• Created users, manage user permissions, maintain User & File System quota on Redhat Linux and AIX.
• Worked on Webservers; JBoss, Tomcat 6/5.x/4.x/3.x & Apache Server 2.x/1.x
• Apache/Tomcat server, mail server, MySQL database, and firewalls in both development and production
• Developed Korn, Perl and Bash shell-scripts to automate routine activities
• Configured and administrated Lpar’s/DLpars’s.
• Data Warehousing and System Backup using tar, cpio for local systems and Veritas Netbackup for enterprise wide backup and recovery
• Manage systems using remote consoles like ILO for HP Hardware and HMC for IBM P-Series
• Setup network printers and installed client/server applications. Defined/setup network protocols, Network File Services (NFS), and Network Information Services (NIS) in Linux and AIX systems
• Network trouble-shooting using ‘ndd’, 'traceroute', 'netstat', 'ifconfig' and 'snoop' etc.
• Provided support by 24x7 shift rotation basis and pager support
• 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
• Updated data in inventory management package for Software and Hardware products.
• Capacity Planning, Infrastructure design and ordering systems.
• Worked with DBAs on installation of RDBMS database, restoration and log generation.

Environment: Red Hat Linux 4.0,5.0 AS ES, Ubuntu, HP-DL585,, Veritas Netbackup, SAN Storage, 4.5.5, IBM-z/VM, Oracle 9i/10g, Perl, Korn, Bash, Samba, NT/2000 Server, Web Logic 8.1, VMware ESX 2.x, LPAR, DLPAR, Tomcat 3.x,4.x,5.x, Apache Server 1.x,2.x, Korn, Bash.

Confidential, Coppell, TX

Linux System Administrator

Responsibilities:

• Administered, maintained Red Hat Enterprise Linux 5.X,4.X, Ubuntu troubleshooting hardware, operating system, applications & network problems and performance issues
• Deployed latest patches for, Linux and Application servers, performed Red Hat Linux Kernel Tuning
• Performed Servers consolidation and virtualization using VMware virtual infrastructure, VMware ESX, Virtual Center, VM tools.
• Install and configure DHCP, DNS, web (Apache, IIS), mail (SMTP, IMAP, POP3), and file servers on Red Hat Enterprise Linux servers
• Installing and setting up Oracle9i on Red Hat Linux for the development team
• Installed Web Logic 9i with SP5 Server and configured Domains, Admin and managed servers for Applications to be deployed.
• Provided production support of Apache and JBoss including installation, configuration, and management and troubleshooting.
• Implemented virtualization using VMware in Red Hat Linux on HP-DL585 and IBM-z/VM series.
• Implemented day-to-day tasks in RHEL that include upgrading rpms, kernel, HBA driver, configuring SAN Disks, multi pathing and LVM file system
• Linux kernel, memory upgrades and swaps area and performed Red Hat Linux Kick start installations
• Created users, manage user permissions, maintain User & File System quota on Red Hat Enterprise Linux and AIX.
• Experience in Migration of HACMP 4.3.1,4.5 to HACMP 5.1 using Node-by-Node migration without changing the cluster setup
• Worked on Web servers; JBoss, Tomcat 5.x/4.x/3.x & Apache Server 2.x/1.x
• Apache/Tomcat server, mail server, MySQL database, and firewalls in both development and productiona
• Wrote Scripts for automating and testing the code using Perl, Korn. Configured and administrated Lpar’s/DLpars’s.
• Manage systems using remote consoles like ILO for HP Hardware and HMC for IBM P-Series
• Setup network printers and installed client/server applications. Defined/setup network protocols, Network File Services (NFS), and Network Information Services (NIS) in Red Hat Linux and AIX systems
• Worked in install, configure and support their reporting application.
• Network trouble-shooting using ‘netstat’, 'ifconfig' and 'tcpdump' etc.
• Administration and Configuration in VERITAS Volume Manager/VERITAS File System
• 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.

Environment: Red Hat Enterprise Linux 4.x, 5.x, VERITAS Cluster Server, Veritas Volume Manager, Oracle 11G, Perl, Korn, HP UX, IBM AIX, HP Proliant DL 385, 585 Weblogic, Oracle RAC/ASM, MS Windows 2003 server.

Confidential

Linux Administrator

Responsibilities:

• Installation and Configuration of RHEL, CentOS, Ubuntu, SLES 9, 10 servers.
• Installation, configuration and management of Apache and Tomcat servers.
• Performing Nessus Scan on quarterly basis to scan for vulnerabilities in Web and Application servers.
• Applying patches to fix the holes that are found during the quarterly scan basis using Nessus scan.
• Upgraded and maintained servers, operating Systems and patches.
• Install/configure/maintain the Linux servers, NIS, DNS, NFS, Mailing List, Sendmail, apache, ftp, sshd.
• Managed NetaPP FAS 920 Storage and implemented RAID.
• Configuring and managing Novell HA cluster in SLES 10.
• Configuring and optimizing open-iSCSI in RHES for SAN using iOmega technology.
• Install host firewall IPTables for Redhat Linux.
• Installed and configured SAMBA server for Windows and Linux connectivity.
• Performed TCP/IP, DNS and DHCP administration.
• Setting up Oracle 10g server in Linux/Unix environment.
• Supported Oracle DBA in the implementation of Oracle 9i RAC.
• Installed and monitored administering and monitoring tools such as Webmin and Nagios.
• Maintained and monitored all of company's servers’ operating system and application patch level, disk space and memory usage, user activities on day-to-day basis.
• Performed routine LVM tasks like replacing failed drives, adding new volume groups, extending volume groups/LVM/file system, exporting and importing volume group for hardware migration.
• Administered Backup and Restore operations using Veritas NetBackup 5.1.
• Monitored and fine tuning system and network performance for server environments running Redhat Linux, Solaris.
• Troubleshoot various systems problems such as application related issues, network related issues, hardware related issues etc.

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.