SUMMARY:

• Over7+ years of IT experience in large - scale enterprise support. Proficient in all aspects of Server computing Infrastructure Management.
• Experience in Installation, configuration, and System Administration with Linux (RHEL 6/5/4), Solaris (10/9/8), VMware vSphere & vCenterand Windows (2008/2012) administration.
• Experiences in Server build using Jumpstart and Kickstart Process.
• Experience in installing, configuring and maintaining Application Servers like WebSphere and Web Logic, Web Servers like Apache HTTP and Tomcat on UNIX and Linux.
• Experienced in Configuration and Administration of NFS, NIS, Samba and DNS on RHEL, Sun Solaris server environment.
• Experience in installing, configuring the Volume/File system management using VERITAS Volume Manager (VxVM), Logical Volume Manager (LVM), Solaris Volume Manager (SVM) and Veritas File System (VxFS).
• Experience in implementing and monitoring High Availability environment using VERITAS Cluster Server, Sun Cluster, Red Hat Cluster Suite and HP Service Guard.
• Performing software installation, upgrades/patches/packages, troubleshooting, and maintenance on UNIX & Linux Servers.
• Expertise in configuring IPMP (IP network MultiPathing) in Solaris and Bonding in Linux.
• Experience in installation, configuration and administration of VMware based virtual servers using ESX/ESXi servers, vSphere and Virtual Center.
• User & Security administration, multiple backup & Recovery technologies (Snapshots, Disaster recovery plan) and maintenance of various activities.
• Experience in working on public cloud such as AWS (EC2, Route53, AWS CF and VPC)
• Extensively worked on solaris10 container technology, created local and global zones, modified local zone parameters.
• Day to day administration of the Development environment and Test environment systems.
• Extensively worked on administering NFS,NIS, NIS+, DNS, DHCP, LDAP, Mail servers and Samba servers.
• Experience in configuring Zettabyte File System (ZFS) pools, file systems, snapshots and clones in Solaris and Global File System (GFS) in Linux.
• Extensive experience in Shell (Bourne, Korn) and knowledge of HTML, Java Scripts, SQL, Perl Scripting.
• Experience in RPM Package Administration for installing, upgrading, and checking dependencies. Reconfiguring RPM database using RPM Build and creating YUM repository in Red hat Linux
• Experience working on Oracle Real Application Cluster (RAC) database, which provides highly available database solutions and supported MS SQL Server and DB2 teams.
• Experience on Live Upgrade, migrating from UFS root file system to ZFS file root system in Solaris.
• Helped to establish standards, policies and procedures for all aspects of Unix Server environment (e.g., administration, configuration, documentation).
• Capacity planning and recommending hardware for SAN (Storage Area Network) implementation and replacements.
• Administering operating systems, hardware, and peripheral components, and maintain databases.
• Expertise in designing and implementing LANs, WAN services and IP Addressing schemes.
• Excellent communication, leadership, mentoring, written and problem solving skills.
• Good Team player with proficiency at time management, multitasking, able to meet deadlines and handle priorities.

TECHNICAL SKILLS:

Operating System: Red Hat Linux 5/6/7, Solaris /10/11, CentOS 6/7, Ubuntu 14.x, Debian 8.x, Windows server 2008//2012.

Hardware: SUN SPARC Enterprise- M5000/4000, SUNFIRE X4270 M2/X4170 M2, M-Series Servers, HP Proliant DL 380/360 G6, G5, HP/Dell PowerEdge series/IBM/Sun Blade Servers, Fire T5240, DL3xx, DL5xx, DL 4xx

Third Party Tools: Veritas Volume Manager(VxVM), Veritas Cluster Service, Red Hat Cluster Suite, HP Service Guard, Sun Cluster, EMC Storage, VMware ESX, RAID Technologies.

Web Application Server: WebLogic 11/10/9, WebSphere 8.0/7.0/6.0/5.0, Apache 2.x/1.3x, Tomcat.

Network/Naming Services: NFS, NIS, NIS+, DHCP, Proxy Server, DNS, LDAP.

Storage: Nimble Storage CS260G, NETAPP 6k, 3k & 2k series, CORAID SRX 3200, SRX 4200 and VSX 2500.

Virtualization: VMwareVsphere 5.x & 6.x, Solaris Zones and Dockers

Cloud: Public: AWS CF and Rack Space,Private: Vmware VRA and Openstack

Languages: Unix Shell Scripting

PROFESSIONAL EXPERIENCE:

Confidential,Seattle,WA

Sr. LINUX/UNIX System Administrator

Responsibilities:

• Installation, Configuration & Upgrade of Linux, Solaris and Windows operating system.
• Installation of Patches and Packages.
• Configuring NFS, NIS, NIS+, DNS, and disk space management on Linux/Unix servers
• Experience in writing Shell scripts. Perl for process automation of databases, applications, backup and scheduling.
• Worked on DataCenter Migration Project. Migrated Linux/Unix Servers from one data center to other data center with minimal downtime.
• Extensive working experience in process scheduling, disk and file system I/O, kernel internals, TCP/IP networking.
• Implemented SUDO, SSH and other security tools and security compliance
• Installation and configuration of Veritas Volume Manager, Veritas File System.
• Extensive use of volume management tool using Logical Volume Manager to create disk groups.
• Installation, Configuration and Administration of High Availability using Redhat cluster and Veritas Cluster Servers for failover and redundancy purpose.
• Implemented in Red Hat Cluster Suite and Global File system, Red Hat Network Satellite Server.
• Experience in Load Balance workload evenly across two or more servers, network links, CPUs, hard drives, or other resources, in order to get optimal resource utilization, maximize throughput, minimize response time, and avoid overload.
• Configured new service group and resources for new application in Veritas Cluster Servers.
• Worked on server consolidation and migration from one data center to another data centers.
• Extensively worked in data and database migration from older machine to latest configurations.
• Configured IPMP, NIC Bonding and Storage Multi-pathing
• Troubleshooting various problems, logging call with vendors.
• Experience in AWS EC2, Route53, AWS CF and S3.
• Monitor performance and resource utilization of key systems and provide ongoing trend analysis for forecasting future resource requirements.
• Installed and configured Vcenter 6.x and VMware ESXi server created VMs and deployed Linux and Windows OS on VMware based VMs.
• Participation in change control activities, Involved in Memory sizing of different applications.
• Complete periodic checks of production and development systems, CPU utilization, memory profiles, disk utilization, network connectivity, system log files, etc.
• Verify successful completion of daily incremental and database backups, following developed procedures
• Worked on server consolidation and migration from one data center to another data centers.
• Monitor performance and resource utilization of key systems and provide ongoing trend analysis for forecasting future resource requirements.
• Administering operating systems, hardware, and peripheral components, and maintain databases. - Replaced faulty - Disk, Power supply, CPU Fan, HBA cards.
• Debugging issues that are effecting the environment and understanding the root cause and identify a solution
• Fixing the hardware failures by coordinating with management and vendors for a uninterruptible delivery

Environment: Solaris9/10,RHEL4/5/6,SunFire v480,SunFire 6900,M5000, T2000,T5140,Netra X1,X4140, X4170 SPARC T- 4 6800/4800/480, Vmware Vcenter 6.x, Vsphere 6.x. Public Cloud: AWS

Confidential,Atlanta, GA

UNIX Systems Administrator

Responsibilities:

• Installation, Configuration and Upgrade of Solaris 8/10, Redhat Linux 4/5 Operating systems.
• Installation and Configuration and administration of Veritas Volume Manager, Veritas File system and Veritas Cluster Server and Redhat Cluster Server.
• Installing Veritas Cluster Server 5.0, testing cluster failover, starting DB2 on nodes automatically after failover.
• Efficiently managed Disk and File system through Veritas Volume Manager, Solstice Disk Suite, andLogical Volume Manager.
• Extensive use of Logical Volume Manager (LVM), creating Volume Groups, Logical volumes and diskmirroring in Linux.
• Installing and administrating security tools like TCP/IP Wrappers, RBAC, and Sticky Bit.
• Implementation of RAID0, 1 and 0+1 levels techniques and the creation of Disk groups and volumes, plex using Veritas Volume manager.
• Installed and configured VMWare virtual servers and deployed operating system on Guests.
• Migrated Solaris to Linux on VMWare based virtual servers.
• Provide the server hostnames, ip addresses, network cables, switch sets (Ports, VLans), associated to the servers to the network team for decommission.
• Engage the Firewall /Load balancer Engineer to verify rules (VIPs, Pools, NATs, routes) and write necessary work order to remove.
• Modified Kernel parameters and rebuilt kernel on Linux environment.
• RPM and YUM package installations, patch and other server management.
• Creating the volumes and creating the file systems (UFS, EXT and VXFS).
• Configured multipath and performed manual failover of filesystems across servers.
• Extensive experience with working on Solaris Volume Manager (SVM), creating meta devices, softpartitions, mirroring the devices.
• Expertise in managing ZFS in Solaris Container.
• Worked on Space allocation to Meta devices, detaching and clearing the devices if not in use.
• Experience working on NAS/Net App Storage.
• Performed setting up Configuration Server and Boot Server for Jumpstart process and using tape x Recovery for file system recovery.
• SENDMAIL configurations and administrations, testing the mail servers.
• Extensively worked on Solaris 10 container technology, created non global zones, modified local zoneparameters, created file systems on local and global zones.
• Involved in Maintenance of DNS Servers.
• Building Linux servers with BladeLogic and performing LVM on file systems.
• Worked on server consolidation and migration from UNIX to LINUX.
• Performed automated installations of Operating systems using Jumpstart, Flash Archive for Solaris.
• Maintaining the Backup management and recovery policies using Veritas NetBackup.
• Maintaining Remedy environments used for the ticketing system.
• Scheduling of automatic repetitive Jobs with Shell scriptingusingCrontab.
• Responsible for change management, troubleshooting and resolution of server issues for end users support.
• Designing Firewall rules for new servers to enable communication with application, DB2 servers.
• Create VM in AWS public cloud as needed.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP.
• Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostat etc) and tuned I/O, memory, etc.

Environment: Solaris 10, Linux RHEL 5, Windows 2000/2003, Sun Fire 6800/E6500 Server, E10K/15K/25K, T2000, Sun Fire 280, 440, 480, 490, 880, 1280, X2250, Apache 2.x, 3.x, NAS /Netapp. Veritas Volume Manager 5.0, Veritas Netbackup 6.0

Public Cloud: AWS

Confidential,Emeryville,CA

UNIX Administrator

• Installation, Configuration & Upgrade of Linux, Solaris and Windows operating system.
• Involved in Data Center Migration using P2P, P2V, V2V migration strategy.
• Installed and monitored VMware Virtual environments with ESX 3.x servers and Virtual Center 2.X.
• Install, upgrade and configure infrastructure software (JBoss, Tomcat, MySQL, etc.)
• Experience in creation of environments on virtual machines to be handed over to development and QA teams. Created containers and deployed applications in JBOSS on different containers.
• Executed builds and performed deployments in various environments.
• Installed, configured and maintained Apache Web Server.
• Involved in Maintenance of DNS Servers.
• Installation of patches and packages.
• Experience executing database scripts and troubleshooting as needed.
• Performed deployment updates to QA, Stress, Integration and Production environments.
• Remotely interacted to troubleshoot the production website and participated in site outage resolution.
• Created branches in subversion systems.
• Maintain and troubleshoot switch and application network connectivity, UNIX infrastructure, including DNS, DHCP, LAN and TCP/IP issues, accounts and security for all application servers.
• Creating new file system, managing & checking data consistency of the file system.
• Performed Backup management through regular ufsdump, ufsrestore, and DLT tape drives.
• Written Scripts for automating jobs, performing deployment builds and tested the code.
• Maintaining the CPU & Memory utilization of Servers reports on the WEB.
• Prepared documentation of understanding, deployment instructions for production releases and updated wiki with standard operation procedures (SOP).
• Participation in change control activities and involved in Memory sizing of different applications.
• Complete periodic checks of production and development systems; CPU utilization, memory profiles, disk utilization, network connectivity, system log files, etc.
• Experience in Disaster Recovery and Planning.
• Expertise in Performance Monitoring and Performance Tuning using top, prstat, sar, vmstat, ps, iostat etc.
• Experience in User and group administration, management and archiving.
• Proactive maintenance on systems by timely upgrading Patches to the systems and Scheduling of batch jobs and Cron jobs.
• Configuring NFS, NIS, NIS+, DNS, Auto-mount and disk space management on SUN servers.
• Involved in 24/7 high availability on pager rotation basis and coordinated efforts with the offshore team.

Environment: Solaris 8/9/10, Linux RHEL 4/5, Sun Enterprise Server, SunFire 6800/ E6500/ E4500 & E3500, Blade Servers. JBoss, Apache 2.x, 3.x

Confidential, Atlanta,GA

Unix/Linux Administrator

Responsibilities:

• Managed 1900+ servers located in South America using remote tools.
• Experience installation RHEL OS and configured required network on HPC cluster.
• Installation, Configuration & Upgrade of Solaris, AIX, HP-UX, Linux (Red hat and SuSE) operating system.
• Installation, Configuration & Trouble Shooting of VXVM under sun Solaris 8, HP-UX
• Managed HPC cluster, performed hardware, BIOS and application upgrade.
• Configured and managed Apache web server and Managed software and hardware RAID systems.
• Managed user accounts and authentication process by NIS service.
• Managed System Firewall utilizing IP Chains, IP Tables. Implemented SSH SSL
• Setup and maintained DNS Primary, Secondary, Cache-only servers, DHCP servers and DNS clients.
• Worked on incidents problem and change tickets related to AIX/Unix/Linux server
• Managing (adding/removing) disks partitions.
• Worked on multiple accounts with Ticket assessment on daily basis.
• Administration and maintenance of WAS ND clusters (vertical, horizontal) and deployment of applications in highly available, load balanced production environments.
• Developed web service integration layer for Web Sphere Portal. Install and configure Web Sphere Portal on33 AIX, UNIX and Windows.
• Experienced in working with Network Engineers to install, manage, and configure NAS based storage and insure overall system and network security.
• Perform auditing on UNIX/Linux Servers for security compliance and monitoring.
• Department Security Focal (Managing all the security related issues like Apars, Cirats, Health
• Worked on security activities (QEV, Health Checks, Priv ID revalidation & PAR) as per ITCS104
• Worked on Server commission and Decommission
• Monitoring the System Performance and tuning the kernel to enhance system performance.
• Worked on Backup issues and resolving as required.
• Job Scheduling and Automating process using CRON & AT
• Worked on Citrix environment user management.
• Administration of Tivoli Storage manager 5.1.4 client.
• Performing User ID creation, modification, deletion and maintain server security
• Monitoring system logs and the root's email for important messages such as errors and warnings or hardware fail errors .
• Worked on tickets troubleshoot, administer and performance tune AIX 5.1, Solaris 6,7 and 8, Red Hat Linux 3.
• Setup and configured network TCP/IP on AIX including RPC connectivity for NFS. Created mount points for Server directories, and mounted these directories on AIX Servers.
• Configured and administrated LPARs. Installation of patches and other software packages
• Configuration of NIS, NIS+, DNS, NFS, Send mail, Samba, Apache for multiple environments.
• Monitoring System performance and do kernel tuning to enhance the system Performance.
• Setup and maintained DNS Primary, Secondary, Cache-only servers, DHCP servers and DNS clients.
• Configured various services, devices as well as applications of UNIX servers and worked with application team to customize the environment.

Environment: Solaris 10/9, Linux RHEL 5, HP-UX 11/11i,AIX 5.3L, Windows 2000/2003, Sun Fire 6800/E6500 Server, E10K/25K, T2000, Sun Fire X2250, Sun SPARC Enterprise 1000, M4000/5000,HP 9000 K,L,N class server, EMC, IBM RS/6000, IBM Power 570,p5 505 Express servers, Apache 2.x,3.x,SAN /EMC.Veritas Volume Manager 5.0, Veritas Netbackup 6.0.

Confidential

Linux Administrator

Responsibilities:

• Managed 500+ servers located in Remote Datacenter.
• Install and Supported Linux (RHEL 4.x) and Solaris 9.
• Installation, Configuration & Upgrade of Solaris &Linux (Red hat and SuSE) operating system.
• Creating user accounts, profiles, setting file permission, customizing shell environments.
• Configured and managed Apache web server and Managed software and hardware RAID systems.
• Managed user accounts and authentication process by NIS service.
• Managed System Firewall utilizing IP Chains, IP Tables. Implemented SSH SSL.
• Administrating Linux Bind DNS servers.
• Documenting System Installation procedures.
• Configuring YUM repos on Linux servers.
• Configuring LDAP and DNS clients.
• Configured and managed VSTP and Samba Servers.
• Monitoring the System Performance and tuning the kernel to enhance system performance.
• Provided root-cause analysis to application hardware/software health and resilience on complex incidents.
• Implementing LVM and Linux DISK partition and configuring autoFS.
• Provided support on end-to-end audit of monitors and alarms based on subsystem knowledge.Take the lead on defining the requirements for new tools required for operations.
• Automate system admin tasks using bash shell scripting.
• Supporting windows Server 2003/NT.
• Provided Tier1 support and administrated multiple environments.
• Job Scheduling and Automating process using CRON & AT
• Performance Monitoring and Performance Tuning using top, prstat, sar, vmstat, ps, iostat etc.
• Jumpstart and Kickstart Solaris and Linux server in prod and QA environments.
• Install and configure custom applications.
• Troubleshoot and resolve systems, application, hardware and network issues.
• Performing TCP dumps, snoop and other network sniffers.
• Worked on Server commission and Decommission.
• Monitoring system logs and the root's email for important messages such as errors and warnings or hardware fail errors .
• Participation in change control activities and involved in Memory sizing of different applications.