Summary:

• Worked with Confidential
• Worked with different Storage Vendors Confidential and worked on configuring SAN using Multipath and Power path.
• Experienced in Disk Management, software RAID solution using Logical Volume Manager LVM , VERITAS Volume manager VxVM , File system Tuning and growing using VERITAS File System VxFS
• Worked on Kernel Patching with different distributions.Checking Kernel Parameters for better Performance Tuning
• Performed Datacenter infrastructure maintenance including racking, cabling and troubleshooting
• Strong technical support background includes Network Design, System Security and Administration
• Implemented the virtualized environment using VMware and Xen
• Expert in system auto-building using Confidential-PXE and automating all aspects of operations
• Installed, Configured and maintained Redhat Satellite Server.
• Experience in installation, configuration, backup, recovery, maintenance, and support of Linux RHEL 4/5/6 SUSE ,Solaris 8, 9 10, HP-UX 10.x, 11.x , AIX 5.x, and Windows NT/2000/2003
• Over 6 years of Experience in Linux/Unix Systems Administration and Virtualization.
• Expert in Configuring Custom Redhat channels, creating standard Confidential Profiles, Applying Secure patches with Redhat Satellite server.
• Design, setup and Supported the three node Oracle 10g Real Application Cluster RAC
• Administration of VM infrastructure with Virtual Center management server and provisioned VM guests on VMware vSphere 4.5/5.0/5.5
• Installation, configuration and administration of VERITAS Net Backup 4.x, 5.x, 6.x and 6.5.x.
• Worked with NIS, NFS, DHCP Server, and Samba in heterogeneous environment.
• Proficient in archiving and backups. Using tar, cpio, dd, ufsdump, ufsrestore commands. Day to day administration of the Development environment and Production and Test environment systems.
• Configured Users Security administration, backup, recovery and maintenance of various activities.
• Advance level of experience in researching OS Issues, Applying Patches and opening the vendor Tickets.
• Capacity planning and recommending hardware for SAN implementation and replacements.
• Very Strong experience and understanding of NFS, Auto mounts, NIS , NIS, DNS, TCP/IP, SMTP mail configuration and Printer configuration.
• Experience in DAS, NAS, SAN technologies.
• Proficient in working with various Middleware/DBA groups in the organization to test open source technologies and analyzing the open source technology to verify and configure the technology for customers business needs.
• Expertise in hardening Linux Server and Compiling, Building and installing Apache Server from sources with minimum modules.

Technical Skills:

Professional Experience:

Confidential

Role: Sr. Linux/VMware Administrator

Responsibilities

• Installed and configured several hundred Red Hat Enterprise Linux in both Physical Blade utilizing Confidential/PXE/Red Hat Satellite Server and VMware ESXi 4.1/5.0 Virtual Environment.
• Create and configure LVM based EXT3 and OCFS2 based Cluster file systems on SAN LUNS utilizing Multipath to assist redundant path detection and increase I/O stability.
• Configuration Installation of Red hat Linux 5/6 and Oracle Enterprise Linux by using Kick Start, Red Hat Satellite Server and customized bash/perl scripts.
• Write and Deploy bash/perl scripts using crontab to perform daily backups, audit collection, and push new changes out to manage and maintain consistency across Redhat Enterprise Linux servers.
• Configure linux multipath and linux device mapper to configure multipathed LUNs from EMC/NetApp.
• Built RHN Satellite Server v5.4.0 for patching, registration, and builds Confidential .
• Implemented, configured and deployed new patches, upgrades, bug fixes on both physical and virtual Red Hat Linux servers using satellite server and YUM server.
• Configured Logical Volume manager to create, extend and maintain volumes.
• Provided 24/7 on call support for 1000 Red Hat Guests, and OEL baremetal deployments.
• Configuring network interface cards for bonding assignments to maintain redundancy.
• Provide maintenance on systems by timely upgrading patches to the systems and applications, Scheduling of batch jobs and cron jobs.
• Installation of ESXi 5.0 Hosts, vCenter Server, vCenter update manager and administering VM's across 3 Datacenters running 2200 VM's.
• Deploying VMware vSphere 5 by upgrading VMware infrastructure 4.1.2 to vSphere 5 and also Upgrade Experience from VMware vSphere 4.0 to Update 1.
• Write and design server modification and environment based BASH/PERL scripts to manage over 500 Servers.
• Responsible for oracle 10g database replication and from site to site to maximize uptime and also an integral part of the backup and recovery.
• Work with DBA's to help configure, manage and develop databases in Oracle 10g, 11g.
• Deployed various Red Hat Enterprise Linux virtual builds using a combination of VMware Templates and PowerCli.
• Implementing and utilizing networkmonitoring tools such as BMC Patrol for the Oracle Enterprise Linux Environment and HP OVSD/Solar Winds suite for the RHEL Physical and Virtual environment.
• Provide support to the Java development team to help develop Java based applications.
• Provide 24/7 support to Middleware application servers Websphere, Weblogic, Tomcat , Webservers Apache, IIS, Oracle IPlanet and Database servers Oracle, DB2, MS SQL, MySQL .
• Knowledge and hand on experience on Advanced Power5 and Power6 Virtualization.
• Partitioning and management Virtual I/O servers and clients
• Configure, maintain NFS, LDAP PAM , Kerberos, Samba Servers as per environment's requirements.
• Participating in 24x7 Production on-call Support of Linux and provided technical support to users at remote datacenters.
• Create and maintain ACL's to allow only specific LAN computers to use squid, as well as utilizing access.log to test squid proxy.
• Particular Focus in monitoring the production HA Environment using Nagios.
• Provide level 1, 2, 3 support for Physical Linux servers running on HP ProLiant BL460's and Linux Virtual Servers running on VMware ESXi.
• Maintain and deploy web farm servers designed to run on Apache and configured Apache to load any custom modules.
• Deployed various Red Hat Enterprise Linux virtual builds using a combination of VMware Templates and PowerCli.
• Patch and upgrade the firmware HP blades using ILO and Onboard Administrator.
• Install and upgrades Red Hat Linux OS using Virtual Media Applet in ILO.
• Manage VMware infrastructure comprising of 60 ESXi hosts with 700 RHEL, Centos Linux Windows OS virtual machines
• Experience in Creating VM templates Managing Virtual machine deployments
• Migrated existing physical server to virtual m/c with P2V tool using hot cloning method

Confidential

Role: Systems Administrator

Responsibilities

• Installation and configuration of Red Hat Enterprise Linux servers using Confidential unattended installation in addition to PXE Boot, configuring of new servers and workstations using Confidential and autostart.
• Maintained user account management, configured servers to register with Red Hat Network RHN Satellite Server, monitored servers workload assessment, service console monitoring.
• Tuning of the Linux OS in order to increase performance as well as installation of new patches as needed, developed shell scripts to automate such as file transfers.
• Troubleshooting any and all problems with performance upgrades and files transfers.
• Supporting 600 Solaris/Linux servers in production/stage/development environment.
• Unix/Linux user's creation, file/dir level permissions, Sudo permissions etc.
• Disaster Recovery operation setup checkup at contracting facility.
• Using VM converter converting Physical machines in VMware VMs.
• Updating/patching Linux, Windows Virtual Machine in VMware clusters.
• Creating VMware Lab setup as per Internal QA team's requirement using VMware ESXi servers.

Confidential

Role: Linux Administrator

Responsibilities

• Mounted/un-mounted new file systems, mounted file systems on remote servers using NFS Server client configurations, performed disk configurations and crash recovery
• Troubleshooting, networking, security, services, reporting, monitoring, database-backed management, capacity planning, strategic planning, documentation
• Established network security using Linux Firewall and troubleshoot problems relating to boot loaders GRUB, LILO
• Assisting with the software integration and turning software builds into RPM packages.
• Configure and maintain NFS Servers for both media and data sharing betweenservers and resolved any shared storage server issues.

Confidential

Role: Jr. Unix Administrator

Responsibilities

• Install and configure AIX LPAR's using NIM and custom based installs.
• Utilizing HMC to install, configure and maintain LPAR's/DLPAR'.
• Active Directory Configuration, creating users, groups, andadding DNS entries.
• Migrating, Configuring and installing zone and ldom.
• Package and User management in zone environment.
• Recreate mirror on drives and root using SVM, VXVM.
• Installation of Veritas Volume Manager