Technical Summary

• Proficient in Linux System Administration with 7 years of experience in related field along with windows.
• Proficient with Red Hat Enterprise Linux RHEL 4.x, 5.x, 6.x administration tasks installation, upgrades, patches, configurations, performance tuning and troubleshooting plus extensive experience on systems like Ubuntu, OpenSuse, Oracle Enterprise Linux OEL , Fedora, and brief idea on AIX and Solaris.
• Adequate knowledge of various high end servers plus hands on experience of servers like HP ProLiant DL 380, 385, 580, BL400c, BL480c, IBM HS22, HS12 Blade center Servers.
• Proficient with processes like Jumpstart, Kickstart, infrastructure setup and installation methods.
• Proficient in file system concepts creating, modifying, mounting, un-mounting file systems plus troubleshooting on various file system types.
• Extensively worked on creating, maintaining user accounts, profiles, security, rights, disk space and process monitoring and restoring.
• Worked with backup technologies like Veritas Net backup 7.0, 7.1 and 7.5, EMC Networker v7.
• Proficient with virtualization environment using VMware ESX and ESXi, Oracle Virtual Box and Microsoft Virtual PC.
• Proficient with Storage Area Network SAN /Network-Attached Storage NAS devices, EMC, Zoning, Linux Multipath, EMC powerpath.
• Hands on knowledge of EMC symmetrix, EMC connectix and Hitachi data system.
• Knowledge of Netapp filters and sharing through CIFS and NFS.
• Hands on experience on creating Raid groups and assembly.
• Disk space and file system management via Veritas Volume Manager 4.x, 5.x, Logical Volume Manager and ZFS.
• Knowledge of clustering using VSC, RHCS in SAN environment.
• Proficient in managing, installing and troubleshooting LADP, NIS, NFS, DHCP, SAMBA and DNS.
• Experienced with Auto mount, TCP/IP, SMTP and Printer configuration.
• Proper knowledge of Apache, Tomcat, Sun ONE, JBoss.
• Experienced in monitoring tools like Nagios, nMon, and BMC patrol.
• Use of cloning and clustering for Workload Management WLM .
• Educated in database environments like Oracle RAC , Automatic Storage Management AMS Disk.
• Good knowledge of Shell Scripting using sh, ksh, bash and PERL as well as debugging the scripts.
• Worked on documentation of the procedure and system requirement as per the business requirement.
• Worked on 24X7 support on rotation basis.

Technical Skills

CONFIDENTAIL

Linux systems administrator

Responsibilities:

• Supported 300 Server in Dev, QA, Staging and Production environments plus primary support to all kind of issues for Redhat 5.x 6.x Linux
• Servers support included NFS, NTP, FTP, users setup/troubleshooting
• Implementing appropriate permissions for files and folders and Managing Users and Groups
• Creation and Maintenance of User Accounts file systems and successfully created logins IDs on large number of servers
• Installation, Maintenance and Administration of Red Hat Enterprise, SUSE and Cent OS on VMS and physical server.
• Monitor Disk space and space as needed in LVM
• Installing and upgrading patches and packages on RHEL 5.1, 6.2 and 6.5 servers using RPM, YUM and third party software applications.
• Limiting user account privileges using SUDOERS
• Installation of Web sphere application and mange users and service account with nopassword option in sudoers file to manage Webshere application.
• Installation of Database servers and users management such as Oracle, MYSQL, SQL Server.
• Installation and configuration of Web /Application Server Apache-Tomcat
• Monitoring and install or updates patch software's, firmware, and security patches for all applications in installed infrastructure via Redhat network.
• Management of Puppet automation tool including installation of puppet agent on client.
• Work on security compliance of the servers which include TCP/IP vulnerability fix, security patches management, password policy using IBM internal tool ITSAS
• Configure and setup Linux server samba protocol
• Responsible for system configuration and installation of software applications, operating system upgrades.
• Installation and configuration of SAMBA x server for interface between Linux servers and Windows servers to share files
• Work on installation of VMware ESX5.5, migration of VMs and data storage, patch management, snapshot and template and clone
• Configuring, administering and trouble shooting of NFS, AutofS

Environment: Red Hat Enterprise Linux 4.x, 5.x, 6.x, VERITAS Volume Manager, Samba, Oracle RAC/ASM 11g , EMC Power path, DELL PowerEdge 6650, HP Proliant DL 385, 585, 580, Sun Fire v440

CONFIDENTAIL

Unix/Linux Systems Administrator

Responsibilities:

• Installed, Configured and Maintained Redhat Linux 4.x, 5.x 6.0 on SPARC, x86 and Blade Centers.
• Supported Redhat servers in Production and Development environments.
• Worked on Virtualizing Redhat servers using vSphere 4.1/5.0 and managed ESX servers using vCenter and also worked with ESX Cluster and vMotion.
• Installed and Configured Redhat Linux Kickstart and booting from SAN.
• Configuration and administration of Fiber card Adapter's and handling of SAN SAN arrays, HITACHI, EMC .
• Performed SAN Migration on RHEL servers.
• Installation and configuration of backup clients like Veritas Net Backup on Linux servers.
• Experience working with HP Openview client and server configuration.
• Experience in writing scripts to automate jobs and debugging scripts.
• Experience in using protocols like NIS, NFS, SSH, SFTP DNS.
• Installation of Redhat EL 4.x, 5 using Kickstart/PXE and SuSe Professional desktop 10x.
• Installation and support of various applications like Weblogic server 10, Websphere 6.1, JBoss 4.x, Apache 2.x.
• Administration of Websphere Application Server 6.x with Network Deployment, and Extension Deployment, on Redhat Linux.
• Mirroring of root disks using Hardware Raid Controller on HP Dell HW.
• Managed 100 UNIX servers running RHEL, HPUX Solaris on Oracle HP and Dell server including blade centers.
• Experience configuring Emulex Converged Network Adaptors by Installing One Command on RHEL servers.
• Creating volumes using storage for VMAX Array on Redhat Solaris servers.
• Data migration at Host level using Red Hat LVM, Veritas Volume Manager and Solaris LVM
• Troubleshooting and performance tuning of various systems problems such as application, network and hardware related issues.

Environment Solaris 8, 9, 10, Redhat EL 4.x, SuSe 10, IBM x3650,IBM HS22 Blade Center, T2000, T5240, V240, V880/890, BL460c, EMC-AvamarNetbackup, IBM Storage Manager, HP, Cisco Works, Korn shell, VMware ESX3.5, VMware Vsphere ESX4.0.

CONFIDENTAIL

Role: Unix/Linux Administrator

Responsibilities:

• Installation, Configuration Upgrade of Red Hat, SUSE, Ubuntu and AIX
• Installation Packages and patches.
• Supported 24/7 high availability production servers.
• Monitoring, tuning to enhance the system Performance.
• Configuration and Administration of DNS, NIS, NIS , NFS.
• Installation, configuration and remediation of various Security software
• Expertise in VMware Virtualization using Vsphere 4.0.
• Installation and configuration of Netscape and Apache web server and Samba Server.
• Jumpstart installation.
• Configuration of Hardware and Software RAID. Disk replacement and File system recovery.
• Interaction with vendors for Hardware and software supports.
• Disk and File system management through Veritas Volume Manager, LVM and SVM.
• Installation and configuration of Apache and Websphere Server in Linux Platform.
• Backup management, creation of Volumes and pools and scheduling the job.
• Installation and configuration of Network Printer with Centralized control of print client.
• Database Backup and Recovery. Performance Monitoring and Tuning
• Planning and setup of Disaster Recovery Servers.
• Trouble shooting of day-to-day system and user problems.
• Documented formally system requirements
• Trained customer user community.
• Assisted team members in contracts, availability / problem resolution, technical Tier 1/2 support and security.
• Environment Solaris 8/9/10,Windows NT 2003/2000/ XP, NT, Redhat 5.x, SUSE, Sun Enterprise 450/420R/250 Servers, SPARC server 1000.

CONFIDENTAIL

System Admin UNIX/LINUX

Responsibilities:

• Performed system administration of servers by using Operating Systems of Red Hat Linux early versions RHEL 4/5.
• Build the E450 and 6000 Servers with Solaris operating system.
• Storage setups, RAID, Logical Volume Manager, system backup design and disaster recovery
• Systems performance monitoring.
• Experience with VMware Virtualization.
• Responsible for troubleshooting end user and application problems.
• Creating User accounts, Mail account, groups, printer etc.
• Installing operating systems, patches, hardware, vendor software packages, system customization and documentation of all departmental UNIX, PC-based workstations and Terminal.
• Monitoring system resources, logs, disk usage, scheduling backups and restore.
• Set up Quotas for the user accounts limiting the disk space usage.
• Creation/Configuration of Additional swap/ tmp dynamically as and when required.
• NFS Management - Take care of user accounts/groups, setting up of NFS Environment.
• Solving the problems as when created when NFS data being accessed.
• Configured auto mounts/maps for the user accounts.
• Administration/Configuration of Print Servers/Clients in the Network
• Worked closely with database administration staff to ensure optimal performance of databases, and maintain development applications and databases.
• Assembling the systems and installing operating system and application software.
• Designing computer displays to accomplish goals using flowcharts and diagrams.
• Installing Operating Systems and Application Software.
• Training for users to use the program.
• Environment Solaris 9/8, HP-UX 11.0/11i, Sun E10K and E15K Servers, Sun Enterprise 6500/500/4500/450/ 420R/250 Servers.

CONFIDENTAIL

Linux/UNIX System Administrator

Responsibilities:

• Administration and maintenance of Redhat Linux
• Worked on Oracle and MySQL Databases and performed performance tuning and troubleshooting.
• Worked on User administration setup, maintaining account, Monitor system performance.
• Activities include user administration startup and shutdown scripts crontab, file system maintenance, backup scripting and automation using shell scripting for Red Hat Linux systems.
• Experience in system Software installation and configuration of NFS shares, Auto-Mounter, DHCP and LDAP
• Manage logical Volume manager on Red hat Servers.
• Troubleshooting day-to-day server related issues and problems in terms of operating system, applications and network
• Configure RAID mirroring on Linux platform
• Maintained and monitoring System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues
• Installation of VMware ESX3.5.4.x infrastructure on Dell Power Edge Server and administration of VMs
• Experience in installing, integrating, tuning and troubleshooting Apache and Tomcat application server.
• Configuring, administering and trouble shooting of NFS, AutoFS Direct and Indirect Maps , NIS master, slave and client and DNS in multi-platform networks.
• Install and configure SSH to enable secure access to the servers.
• Modified the Linux kernel to add tracing probes for Configuration access tool.
• Environment, Command line, Current working directory, root directory, executed command.
• Experience in Shell scripting bash to automate system administration jobs
• Environment: Redhat EL 4.x, 5.x, ESX 3.x,4.x,Window, Samba 3.3.x, Veritas Netbackup 5.0,6.5, Veritas Cluster Server 5, DL 580, 585, EMC Symmetrix DMX-3,