EXPERIENCE SUMMARY

• 10 years IT experience and 7+ years in Redhat Linux administration in distributed, heterogeneous environments.
• Redhat Linux ( RHEL 6.x, 5.x, and 4.x), Centos, Ubuntu system administration
• Disk and File system management through Logical Volume Manager (LVM) on Linux.
• Expertise in Installation, Configuration and system management and RAID volume management through Logical volume Manager (Linux, Centos).
• Extensive experience in Shell Scripting, sudo, sed, awk, find, crontab, bash to automate system administration tasks.
• Expertise in System Performance Tools sar, iostat, vmstat, top, etc. Experience in monitoring, managing resource pool, kernel tuning and Load balancing to ensure stable performance.
• Experiences in Server build using Jumpstart and Kickstart Process.
• Expertise in NFS/DNS/TFTP/DHCP/TCPIP, SSH, scp, rsync, tar, gzip, etc.
• Extensive experience in VMware Hypervisor ESX/ESXi 4.x, 5.x, vCenter 5.x. Proficiency in VMWare installation and monitoring virtual environments with ESX 5.x and Virtual Center 4.X and Virtual Appliance 5.X.
• Knowledge of Puppet and LAMP stack.
• Expertise in administering the proxy web and application servers
• Storage experience in managing EMC, NAS storage arrays and NetBackup administration.
• MS Access database, SQL, VBA, and Microsoft Office tools, RDBMS administration.
• Dell PowerEdge 900, 910, Cisco UCS blade servers (B200M2, B200M3, B420 M2)
• User & Security administration, multiple backup & Recovery technologies (Snapshots, Disaster recovery plan) and maintenance of various activities..
• Advance level of experience in researching OS Issues, applying Patches and opening the Vendor Tickets.
• Day to day administration of the Development, Test, Prod environment systems.
• Provided 24X7 supports on pager rotation basis.
• Helped to establish standards, policies and procedures for all aspects of Linux Server environment (e.g., administration, configuration, documentation, etc).
• Knowledge of Routers and Switches, Subnetting, VLAN, TCP/IP, VPN, OSI model, Firewall (checkpoint).
• Technical professional with management skills, excellent business understanding and strong communication skills.
• Skilled in cultivating positive relationships with clients and colleagues; particularly adept at communicating with clarity to individuals from diverse cultural and organizational backgrounds.

TECHNICAL EXPERTISE

Operating System: Linux (RedHat, CentOS & SuSE), Windows 2003/2008.

Hardware: Dell PowerEdge 900, 910, Cisco UCS blade servers (B200M2, B200M3, B420 M2), HP Proliant DL 360, 380 G3, G4, G57 G6HP Blade Centers C6000, C7000

Virtualization: VMware infrastructure client, workstation, Linux virtualization, VMware vSphere EXSi

Network/Naming Services: NIS,NIS+, DHCP, Proxy Server, DNS, ADS, Routing, DHCP, NFS, FTP, LDAP, Open LDAP, SSH

WEB Technologies: APACHE 2.x, 1.3x, Tomcat 6.x,7.x.

Languages: UNIX Shell Scripting, Perl, Bash, SQL

Backup Management: Netbackup 4.x/5.x/6.x, tar, cpio, rsync, Symantec Backup Exec

Third Party Software: Redhat Cluster Suite, EMC Storage, RAID Technologies, Nagios and Netbackup 3.5/4.0/5.1 and 6.5, MS Project, MS Excel, Remedy, SharePoint, MySQL, MS Access, VBA

Protocols: TCP/IP,UDP, OSPF, EIGRP, IGRP, SNMP, SMTP, TELNET, SSH

PROFESSIONAL EXPERIENCE

Confidential, CA

Linux Systems Administrator

Responsibilities:

• Installation, Configuration & Upgrade of Linux operating systems. Performed upgrades of Packages and Patches in Linux
• Working with the server, database & apps team on new deployments & production issues
• Created User, Groups and File Systems as per system requirements.
• Provide support to users and system administrators and troubleshooting assistance.
• Modified existing scripts to automate system tasks and developed new shell scripts.
• Provide Documentation of all the Processes and change requests
• Working in installing, configuring the Volume/File system management using Logical Volume Manager (LVM) and NFS.
• Configured NFS Servers, Diskless clients and Auto clients and auto mounted the file systems using direct and indirect maps.
• Performed all LVM and file system tasks like creation of Logical volume and file system, Mount a file system, Modifying size of a Logical Volume and file system, removing a file system.
• Allocate storage LUNs being used by clustered systems to all servers in the cluster group.
• Monitoring system performance and capacity working on reconfiguration. Monitor system activity and perform auditing.
• Configure reporting using various supported tools/scripts. Provide utilization, available capacity reports and growth estimates for all storage devices on weekly/monthly basis
• Configured and troubleshooting NFS, NIS, NIS+, DNS, DHCP, FTP, LDAP, and Apache servers in Linux Servers.
• Performed Memory and Swap management to improve optimization and performance of the servers.
• Created SQL queries and developed Access Database, Migrated Excel datasets into MS Access
• Designed, developed and produced numerous tables, forms, queries, macros and modules.
• Prepared, developed and updated daily, weekly, and monthly activity reports.

Confidential

Linux Systems Administrator

Responsibilities:

• Installation, configuration and maintenance of Redhat Enterprise Linux (RHEL) servers
• User management, creating and managing user accounts, groups and access levels
• Monitoring System Performance of Virtual memory, managing swap space, disk utilization and CPU utilization
• Added new physical volumes and disk space using LVM, managed, and troubleshoot file systems.
• Implemented shell scripts to automate system admin day to day tasks.
• Configured and troubleshooting NFS, NIS, NIS+, DNS, DHCP, FTP, LDAP, and Apache servers in Linux Servers.
• Installation and configuration of ESX/ESXi hosts, register to the vCenter server.
• VM provisioning through ESX/ESXi hosts and VMware vCenter Server 5.0, 5.5
• Performed upgrades of Packages and Patches in Linux.
• Installed Linux on VMware virtual servers using Virtual Client Infrastructure Console and Virtual Media.
• Patched different software using RedHat Package Manager and YUM. Upgraded Linux Kernel using YUM.
• Setup sudo environment in sudoers file.
• Automate day to day sysadmin tasks by setting cron jobs.
• Modified existing scripts to automate backup jobs.

Confidential

Linux Systems Administrator

Responsibilities:

• Installation, configuration and maintenance of RHEL 5.x/6.x
• Monitoring and maintaining Linux servers performance using top, vmstat, iostat, free and ps
• Implemented shell scripts to automate system admin day to day tasks.
• Provide support to web and application teams.
• Created and managed user and group accounts.
• Assisted database and application teams to provide SAN and NAS access.
• Responsible for day to day Systems Administration tasks.
• Created new logical volumes and extended existing logical volume.
• Configured NFS Servers, Diskless clients and Auto clients and auto mounted the file systems using direct and indirect maps.
• Performed all LVM and file system tasks like creation of Logical volume and file system, Mount a file system, Modifying size of a Logical Volume and file system, Removing a file system.
• Installed Linux on VMware virtual servers using Virtual Client Infrastructure Console and Virtual Media.
• Change Management for implementing Day to Day maintenance activities in Test and Prod Environments.

Confidential, CA

Linux Admin

Responsibilities:

• Installation, Configuration & Upgrade of Linux operating systems. Performed upgrades of Packages and Patches in Linux Experience in setting up and configuring
• Install Server, Configuration Server and Boot Server for Kickstart process & performed Kickstart to install OS on Linux servers.
• Working with the server, database & apps team on new deployments & production issues
• Created User, Groups and File Systems as per system requirements.
• Provide support to users and system administrators and troubleshooting assistance.
• User management, creating and managing user account, groups and access levels.
• Designed, developed and produced numerous scripts, queries, macros and modules.
• Prepared, developed and updated daily, weekly, and monthly activity reports .
• Completed multiple projects from gathering requirements from end users to overall design, development and deployment to production.
• Maintained different relational databases using the MS Access, VBA, SQL etc.
• Design, development and maintenance of systems using the tools of MS Access, MS Excel, Visual Basic, MSWord, VBA, Windows etc.
• Worked on system administration of MS Access databases and Windows servers
• Successfully completed several projects from gathering requirement from end users to overall design, development and deployment by using the tools of MS Access, MS Excel, Visual Basic, MSWord, VBA, Windows etc.
• Worked on system administration of MS Access databases and Windows servers
• Created relational databases by designing numerous tables, forms, queries, macros and modules
• Migrated Excel datasets into MS Access.
• Prepared, developed and updated daily, weekly, and monthly activity reports .