SUMMARY:

• Overall seven years of experience as Linux/Unix system administrator on Redhat EL 4.x, 5.x, 6.x, CentOS 4.x, 5.x, 6.x Suse 10.x, 11.x Oracle Enterprise Linux, Solaris 8,9,10 and VMware ESX, ESXI environment. Experienced in implementing and administering VMs using VMware ESX and vSphere 4.x, 5.x and vCenter.
• Extensive implementation and troubleshooting experience under Client Server Systems.
• Configured Kickstart servers for complete hands - free installation of workstations, wif custom profiles, begin/finish scripts and custom package suites/clusters.
• Experience on installation of WebSphere application
• Experience on installation of VMware ESX, ESXI migration of vm’s from one host to another host, migration of vm’s from one data storage to another data storage, patch management.
• Working experience on Windows Active Directory and LDAP.
• Experience on joining Linux server to Active Directory using winbind and samba protocol.
• Management of Puppet automation tool including installation of puppet agent on client server
• Integration of various network related services like NFS, NIS, DNS
• Installation and configuration of Apache, Tomcat / Web logic on Linux
• Database Installation includes Oracle, SQL, and MYSQL.
• Monitor Disk space and space as needed in LVM.
• Setup and administration of VERITAS Volume Manager and HA Clusters.
• Troubleshooting skills wif network protocols such as DNS, TCP/IP, SMTP, and SNMP.
• Hands on experience wif ticketing tools such as Remedy and Quick base.
• Management of User accounts, System security, kernel performance monitoring and tuning.
• Basic knowledge of networking devices such as F5 load balancers
• File System servers wif NFS wif Auto mount clients.
• Web /Application Server Tomcat, Apache, Web logic
• Developed basic UNIX scripts using Bash
• Installation, configuration and maintenance of Dell and HP servers.
• Management of User accounts, System security, change management and performance tuning.
• Working Knowledge on Automatic Storage Management (ASM)
• Monitoring and administering Red hat Linux servers
• Experienced in installation of Operating Systems, Packages and Patches, adding Peripheral, maintaining user accounts, System Security, backup /recovery, performance tuning, troubleshooting at various levels.
• Experience on monitoring tools like Nagio, Cacti.
• Basic knowledge on disaster recovery solution using various tools.
• Hands on knowledge of SAN and NAS technologies
• Working knowledge on Tivoli Monitoring tools and backup.
• Ability to handle multiple tasks and work independently as well as a team member
• Provided on-call support and worked wif Vendors on system issues and bugs for its resolution.
• Proficient in System administration, System planning, co-ordination, commissioning, setting up security hierarchy and capacity planning.
• Willingness to work on flexible hours for production, backup and on-call support for 24/7 environments
• Good communication skills self-motivated wif a high degree of attention committed to work and have sound leadership qualities.

TECHNICAL SKILLS:

Operating System: RHEL 4.x, 5.x, 6.x Centos 4/5, SuSe 10/11, Windows XP

Web /Application Server: Tomcat, Apache

Cluster server: Veritas Cluster

Languages: HTML, Bash, Python & Shell Scripting

Virtualization: VMware and Vsphere

Networking: LAN, WAN, TCP/IP, UDP, NIS, DNS, DHCP, NAS, and SAN

Monitoring Tool: Hobbit, Nagios

Firewall: IP-Chains, Iptables, NAT

Services: SSH, SFTP, FTP, NFS, RPM, YUM, SAMBA, Telnet, Auto FS, Telnet

PROFESSIONAL EXPERIENCE

Confidential, Asheboro, NC

Linux Administrator

Responsibilities:

• Installation, configuration and Operating System upgrade on, Red Hat Linux 4.X, 5.X, 6.X, SUSE 11, UBUNTU, AIX Servers.
• Administrated server consolidation program through use of VMware ESX server and VMware Virtual Center
• SWAP box configuration, Implementation of disaster backup and recovery.
• Performance Management & Tuning of RHEL.
• Used Veritas File system and Veritas Volume Manager 2.5 to configure teh RAID 1 and RAID 5 Storage Systems
• Installed and configured SAMBA server for windows and Linux connectivity.
• Implemented and configured Backup policies and Storage Units.
• Managing disk storage wif Veritas Volume Manager 3.5/4.1.
• Implemented NIS and NFS for administrative and project requirements.
• Installed and Configured Web and investigate teh configuration changes in teh production environment.
• Responsible for multicasting of various components as a system administrator.
• Monitoring system resources, logs, disk usage, scheduling backups and restore
• Set up Quotas for teh user accounts & limiting teh disk space usage.
• Configuring SUDO and granting root permission to users for performing certain activities.
• Upgrading RHEL 5.0 to RHEL 5.5 using live upgrade and manual upgrade.
• File system tuning, growing, and shrinking wif Veritas File system 3.5/4.x
• Worked on network connectivity, SAN storage, creating LVM and taking TSM backup.
• Created BASH shell scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation.
• Modifying user’s password policies, group policy, UID and GID assignment policies.
• Monitored teh performance of teh system using top, sar, ps, prstat, vmstat, netstat, iostat, and cpuinfo to check teh CPU utilization, bottlenecks of I/O devices,, memory usage and network traffic.
• Troubleshoot network connectivity used ping, netstat, ifconfig, and trace route commands. Login to teh remote system using sudo, putty, and telnet. Transfer files across teh systems on teh network used ftp, scp, and rsync commands.
• Managed various security benchmarks as per teh company rules and policies.
• Linux technical support and prepared technical documentation for check in verification.
• Regular backing up of critical data and restoring backed up data. Worked in solving tickets issued on day-to-day activities and problems related to development and test servers.

Environment: Red Hat Linux 5.x, 6.x, SuSe 10,11, VMware ESXi 5.x, Veritas Volume Manager, Veritas Cluster Server, Weblogic 11.g

Confidential, San Francisco, CA

Linux System Administrator

Responsibilities:

• Day to day system administration to support 200+ Server in Production in development, Test and Production environments.
• Installation, Maintenance and Administration of Red Hat Enterprise 5.x, 6.x, Cent OS and AIX Servers.
• Primary support to all kinds of issues for all of Unix and Linux
• Worked wif Redhat for finding root cause on issues
• Installation and configuration of SUDO package and accomplished successfully across various Unix platforms.
• Limiting user account privileges using SUDOERS.
• Installation and configuration of Web /Application Server Tomcat and Apache
• Implementing appropriate permissions for files and folders and Managing Users and Groups
• Troubleshooting of day to day system and user problems various Servers on different platforms
• Implementation of VMware Infrastructure for RHEL 5.x, 6.x wif VMware ESX 4.1x and building KVM Hypervisor.
• Creation and Maintenance of User Accounts file systems and successfully created logins IDs on large number of servers.
• Familiarity wif configuring and using a Configuration Management product for Linux servers (e.g. Cobbler)
• Servers support dat included NFS, NIS, NTP, FTP, and users setup/troubleshooting.
• Installed OS patch clusters and 3rd party application patches
• Monitoring Disk space, adjust VxVM Configuration& add space as and when needed
• Working knowledge of Remedy ticketing system.
• Worked on teh configuration of server monitoring tool like Nagios
• Monitoring and installation or updated patch software’s, firmware, and security patches for all applications in installed infrastructure.
• Creation and Maintenance of User Accounts file systems and successfully created logins IDs on large number of servers
• Administrated DHCP, DNS and Samba services in Linux.
• Configuration, Administration and maintenance of NFS, DNS, NIS on Linux Servers.
• Working on evaluating new hardware and software.
• Provide 24x7 on-call /Remote Support for UNIX Production Problems.
• Responsible for Installation of various Hardware Components on various servers.
• Responsible in building and startup shell scripts, managing teh automation of CRON jobs and managing file systems
• Responsible for system configuration and installation of software applications, operating system upgrades and hardware

Environment: HP Network Node, HP DL365, DL360, DL380, DELL, RHEL 5/6, CentOs 5/6, Esxi 4.1, SPARC server 1000, SPARC server 20 Enterprise Servers, SPARC server 1000/20, SPARCstation 10 and Web logic 8.1

Confidential, Virginia Beach, VA

Linux Administrator/Unix Administrator

Responsibilities:

• Installation and configuration of Red Hat Linux 5.0 on servers, workstations and I/O devices on E4500 environment.
• System building from scratch for Linux system.
• Used Veritas Netbackup tool for Backup and recovery.
• Configured DNS Servers and Clients and troubleshooting system and DNS issues.
• Installed and configured new hard drives and memory.
• Used Admin tool for adding and managing new users, groups, software and printers.
• Created disk groups, volumes, volume groups and RAIDs using Veritas Volume Manager.
• Involved in disk configuration and disk crash recovery using format and fdisk. Bad spots on disk were repaired using repair and analyze. Created new slices, mounted new file systems and unmounted filesystems.
• Installation, Configuration and Administration of High Availability Veritas Cluster Servers for failover and redundancy purpose.
• Created Korn shell scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation.
• Involved in preparation of functional and system specifications. Estimated Storage requirements for applications.
• Installed all of teh required Software, patches, documentation, licensing and troubleshooting.
• Setup various user profiles, environment variables/security to ensure smooth operation.
• Responsible for fax link and sending email.

Environment: RHEL 4.x, 5.x, Windows NT 4.0, Genicom Printers and Laser Jet Printers, Veritas volume manager, VCS, Veritas Net Backup 4.0

Confidential, Kathmandu, Nepal

Linux System Administrator

Responsibilities:

• Installed and configured Red hat Enterprise Server 5 on Dell PowerEdge Blade servers and HP C6000, C7000 blade centers using Kickstart wif PXE for LAMP (Linux, Apache, MySQL and Perl/PHP) installations
• Used Logical Volume Manager for teh management of Volumes including creation of physical and logical volumes on Linux
• Developed, customized and built RPMs on Linux for deployment on various servers through Software Development Life Cycle.
• Patch and Package administration to keep teh servers updated wif teh patches and dat implementing packages developed for deployment.
• Maintained Web Servers, file servers, firewalls and directory services
• Installed and Configured SSH for secured access on Red Hat Linux Systems.
• Installing, configuring various software applications and packages like Apache, Tomcat Weblogic, Oracle.
• Configuring, administering and trouble shooting of NFS, AutofS (Direct and Indirect Maps), NIS (master, slave and client) and DNS in multi-platform networks
• Monitoring System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
• Tuning teh Kernel parameters for teh better performance of applications like Oracle, Web Logic.
• Performed application installation and configuration JBoss 4.2, LDAP and Oracle 10g on Linux Server
• Worked on teh configuration of server monitoring tool like Tivoli
• Experience in Socket level TCP-IP programming
• Installation of SAMBA 3.3.x server for interface between Linux servers and Windows servers to share files.
• Responsible for network troubleshooting and planning in a web hosting environment including teh configuration of 3-Tier Environment
• Creating, Deleting and managing user database and their respective directories.
• Setting up cron jobs for teh user to deploy scripts on production servers.
• Troubleshooting day-to-day server related issues and problems in terms of hardware, operating system, applications and network.
• Worked on User administration setup, maintaining account, Monitor system performance.

Environment: HP-UX 10.20, 11.00,Redhat5, NFS, LVM, Veritas Volume Manager 4.0, DHCP, DNS, SMTP, Apache, Dell 6450,1350

Confidential

Linux/Unix Administrator

Responsibilities:

• Performed automated installations of Operating System using Kickstart for Linux.
• Installation and Up-gradation of RHEL 5.0
• Primary support to all kind of issues for all Linux platforms
• Developed, customized and build RPMs on Linux for deployment on various servers through Software Development Life Cycle.
• Management of user accounts and groups, File systems and disks
• Installation of SAMBA server for interface between Linux servers and Windows servers to share files
• Patch and Package administration to keep teh servers updated wif teh patches and dat implementing packages developed for deployment
• Installed and configured SSH to enable secure access to teh servers
• Limiting user account privileges using SUDOERS
• Creation and Maintenance of User Accounts file systems and successfully created logins IDs on large number of servers
• Designed bash to automate application and system management activities. These scripts provided teh following functionality: application startup and shutdown, monitored systems and applications health, and web site management
• Provided 24x7 on-call/ Remote Support for UNIX Production Problems
• Support to manage documentation for systems and created new procedure to support new products.

Environment: RHEL 5.0, SAMBA, SSH,bash, DHCP, DNS, SMTP, kickstart, RPM, LINUX