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Sr. Linux/unix/vmware System Administrator Resume

Denver, CO

SUMMARY:

  • Around 7+ years of IT industry experience in Solaris, HP - UX, AIX and Linux (RHEL, SUSE, Ubuntu, CentOS), VM WARE (ESX, ESXi) System Administration.
  • Experience in Server build using Jumpstart, Ignite and kickstart Process on multiple servers.
  • Experience in configuring NIS, NIS+, NFS, SMTP, DNS, DHCP, Mail Server and Samba Server in a heterogeneous environment
  • Involved in large data center migration planning, Server consolidation & data migration project
  • Experienced in the Installation, Configuration and Administration of Web & Application Servers like Apache, Tomcat, Sun One, and Jboss.
  • Excellent in installation and configuration of Patches and Packages.
  • Expertise in configuring and administering VERITAS Cluster Services (VCS), HP Service Guard, Red hat Cluster Suite and Sun Cluster.
  • Experience in using Veritas Net Backup.
  • Experience in installation, configuration, maintenance and troubleshooting the Zones/Containers, SMF, LDOM and ZFS on Sun Solaris.
  • Experience in creation & maintenance of file systems, and User & Group Administration.
  • Performed memory and process management and troubleshooting.
  • Experience on storage arrays like SAN, NAS, DAS EMC Storage, HP and IBM Storage, HDS.
  • Experience in configuring and administering the Load balancing clusters.
  • Experience in Configuring and administrating the Firewalls and setting up the access rules.
  • Created RAIDs using LVM, Veritas Volume manager and Solaris Volume manager.
  • Managed resources for Zones using Solaris 10 Container Technology.
  • Hands on experience in installing, configuring and maintaining Samba & Sendmail.
  • Experience in Setting up monitoring system with Nagios, cacti and opManager
  • Deployed Puppet, Puppet Dashboard, and PuppetDB for configuration management to existing infrastructure
  • Used Puppet, Ansible to assist in building automation policies.
  • Utilized Puppet to automate single-command provisioning for development and production environments for an operation tools startup.
  • Used Puppet to manage Web Applications, Config Files, Data Base, Commands, Users Mount Points, Packages.
  • Intermediate to expert programming skills in non-Python languages; developed non-trivial applications and utility scripts in Node.js, Java, Common Lisp, Ruby, and bash.
  • VMware Infrastructure 5.5/5.x/4.x Installation & Configuration.
  • Extensive Knowledge on VMware Vmotion, SVmotion, HA and DRS.
  • Planning and Designing VMware V Sphere 4.0,4.1,5.1,5.5 (ESX3.x/ ESXi/ Thin ESX and VMware Virtual Center).
  • Creating and managing the Data stores in V center 5.5& 6.0
  • Installation, Configuration and updating of Operating Systems Red Hat Linux, Solaris, VM Ware, Windows
  • Involved in Active Directory Designing and Structuring
  • Installation, Configuration & Upgrade of Windows 2000/2003
  • Involved in MS Exchange Server 2003 systems like mailbox store and public server
  • Experience in Shell Scripting languages like Bourne shell, Korn shell.
  • Familiar with Change management tools.
  • Knowledge on basic Cisco Switches and Routers.
  • Good exposure to Network Storage Solutions like DAS, NAS, LDAP and SAN
  • Familiar with monitoring tools like vmstat, iostat, netstat, free, top and ticketing tools like Remedy, Peregrine etc.
  • Experience of working in Data centers with 24X7 Production and On-Call Environment.
  • Time management and scheduling for all related jobs.
  • A Good team player with ability to lead a team by example and motivate them to achieve desired objectives. Willing to take on extra responsibilities to get work done.
  • Exceptional interpersonal skills. Handle sensitive matters with tact, poise and diplomacy. Communicate and interact well with individuals at all levels.
  • Involved in admin groups such as Domain admin, Enterprise and Schema admin

TECHNICAL EXPERTISE:

Operating System: Red Hat Linux 3/4/5/6,7 SuSE 10/11, Solaris 11/10/9/8, HP-UX (11.0.11.11 , 11.23,11.31), IBM AIX (6.1, 7.1), & VM Ware ESX/ESXi (3/4/5.5/6) Windows 2033/2008

Hardware: Sun Enterprise E 5000/5500/6500 , Sun Fire 3800/4800/6800 , E10K/15 Series server, TSeries, MSeries Servers, HP-9000, rx8640, rp7420, rp8420, N-Class, L-Class, D-Class, K-Class, IBM e-Server Regatta P690, P570, RS6000, IBM/HP/DELL Blade Servers.

Third Party Tools: Veritas Volume Manager, Logical Volume Manager, RAID, Veritas Cluster, Sun Cluster, HC Service Guard, VMware ESX/ESXi Technologies

Web Application Server: Apache, WebSphere, Weblogic, JBOSS.

Network/Naming Services: NIS, NFS, AutoFS, DNS, DHCP.

Storage: SAN, NAS, DAS EMC Storage, HP and IBM Storage, HDS

Languages: Unix Shell Scripting, Perl Scripting, HTML.

PROFESSIONAL EXPERIENCE:

Confidential, DENVER, CO

SR. LINUX/UNIX/VMWARE SYSTEM ADMINISTRATOR

Responsibilities:

  • Performed installation, configuration and maintenance of Red Hat Linux4.x, 5.x, 6.x.
  • Provided 24x7 System Administration support for HP-UX/10.x/11.x based servers and Red Hat Linux 4.x, 5.x,6.x servers and resolved trouble tickets on shift rotation basis.
  • Handling HP and DELL servers running on Red Hat Linux and SUSE Linux 9/10.
  • Wrote bash script for getting information about various Red Hat Linux servers.
  • Maintaining CPU, Memory resources on Micro partition VIO Server’s and Client’s environments.
  • Worked on DM-Multipath to determine scsi disks to corresponding LUNS.
  • Creation of LVM’s on SAN using Red Hat Linux utilities.
  • Experience in Servers consolidation and virtualization using VMwareVsphere Client and Citrix Xen.
  • Installed and maintained IBM TivoliStorage Manager (TSM) for Backups and data storage.
  • Good understanding of web services software architectural and design issues.
  • Monitored overall system performance, performed user management, system updates and disk & storage management.
  • Worked on Installation and configuration of MySQLon Redhat Linux/ Unix servers.
  • Worked in supporting DBA systems including Oracle on Redhat Linux/Unix servers including restoration.
  • Performed daily backups, restoration of data as per requests from developers using VeritasNetbackup.
  • Performed Red Hat Linux kernel, memory upgrades and undertook RedHat LinuxKickstart installations.
  • Created users, manage user permissions, maintain User & File System quota on RedHatLinux.
  • Performed troubleshooting, tuning, security, backup, recovery and upgrades of HP-UX/10.x/11.x based systems.
  • Production support of Apache and JBoss including installation, configuration, management and troubleshooting
  • Setup of full networking services and protocols on UNIX, including NIS/NFS, DNS, SSH, DHCP, NIDS, TCP/IP, ARP, applications, and print servers to insure optimal networking, application, and printing functionality.
  • Installed and configured Sudo for users to access the root privileges.
  • Efficient knowledge in configuration and installation of management tools like Puppet.

Environment: HP-UX/10.x/11.x, Red Hat Enterprise Linux 4.x/5.x, SUSE Linux 9/10, Tivoli Storage Manager, Oracle 9i, Logical Volume Manger for Linux and VMware ESX Server 2.x, Samba 3.0, VeritasNetbackup, Apache 2.0, HACMP, HMC, ILO, RAID, HP-DL585, Hitachi disk Arrays.

Confidential, HORSHAM, PA

SR. LINUX/UNIX/VMWARE SYSTEM ADMINISTRATOR

Responsibilities:

  • Installation, Configuration and Upgrade of, Red hat Linux AS 6/6.5,7 IBM AIX 6.1&7.1, Esx/Esxi /5.1/5.5 Operating systems.
  • Installation and configuration VMware clusters and experience in the maintenance of VMware clusters with VMware Infrastructure/vSphere
  • Extensive use of Logical Volume Manager (LVM), creating Volume Groups, Logical volumes and disk mirroring in, AIX and Linux.
  • Implementation on VMware Migration like SV Motion and V Motion in VSphere client.
  • Implementation on VMware upgrade to 5.0 to 5.5
  • Submit a request to the Network Order Management System to have a Network Engineer engaged to identify, decommission and pull any network cables for the servers in scope for decommission.
  • 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.
  • Deployed Puppet for configuration management to existing infrastructure
  • Used Puppet, Ansible to assist in building automation policies.
  • Utilized Puppet to automate single-command provisioning for development and production environments for an operation tools startup.
  • Used Puppet to manage Web Applications, Config Files, Data Base, Commands, Users Mount Points, Packages.
  • Linux and AIX security patches and OS upgrade as per release plan.
  • RPM and YUM package installations, patch and other server management.
  • Creating the volumes and creating the file systems (UFS, XFS, and EXT).
  • Configured multipath and performed manual failover of file systems across servers.
  • Worked on Space allocation to Meta devices, detaching and clearing the devices if not in use
  • Building Linux servers with Blade Logic and performing LVM on file systems.
  • Worked on server consolidation and migration from UNIX to LINUX.
  • Extensive experience in configuring Global File System(GFS) and Zeta Byte File System(ZFS)
  • Performed automated installations of Operating systems using Jumpstart, Flash Archive for Solaris and ignite for HP-UX
  • Troubleshooting Linux &Aix network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP.
  • Expertise on Decommissioning on Linux Virtual and Physical servers.
  • Expertise capacity analysis, monitors and controls usage of disk space.
  • Worked with a service desk team for issue resolution and problem management
  • Participated in the 24x7 on-call rotation.
  • Highly motivated team player with strong verbal and written communication skills, the ability to work alone and must possess a positive attitude.
  • Strong analytical and problem-solving skills.

Environment: VMware VSphere 4.1, 5.1, 5.5, Linux RHEL 5/5.8/6.0/ 6/5,7 Solaris 11/10/9/8, AIX 5.1,6.1,7.1, Windows 2000/2003Confidential, TAMPA, FL

LINUX/UNIX/VMWARE SYSTEM ADMINISTRATOR

Responsibilities:

  • Migration of applications from older Sun/Solaris hardware over to HP blade environment running RedHat Linux (RHEL4, 5, and 6. P2V migrations of hardware servers to VMware environment running on ESX V4.1 servers (HP Proliant hardware). Ongoing maintenance and support of several hundred Solaris and RHEL servers, operating with a wide variety of applications, running on both physical and virtual machines.
  • Administered Linux servers for several functions including managing WebSphere, Apace/Tomcat server, mail server, MySQL database, SVN,
  • Design and Deploy In house (Private Cloud) using eucalyptus and Openstackon Centos and Ubuntu OS
  • Creating profiles in Puppet and pushing them across to the associated servers in Linux environment.
  • Troubleshooting Apache issues such as performance testing and tuning (i.e. worker, pre-fork, mpm configuration), failure of Aapche to restart, queuing of requests, etc.
  • Red Hat Linux server administrator, including security patching, kernel tuning, RAID disk array mgmt, software packaging and installation using RPMs.
  • Customize the migrationlife cycle concepts and implement the best practices that ensure quality standards and less downtime through the process.
  • Perl and shell scripts to collection and summarize server information for server monitoring improvement project.
  • Using Puppet for pushing server configuration across distributed virtual server environment. Performance enhancement and tuning for Tomcat, Apache and JBoss servers on RHEL6 OS virtual instances. Writing Build and Build deployment scripts.
  • Used Puppet Master to keep in sync configuration on hosts running agents.
  • Upgraded and maintained software packages on servers using RHEL Satellite and Repository servers.
  • Build new Virtual machine and physical server.
  • Managing the VMWare ESX and ESXi server 5.5, 5.1, 4.0.0 and 3.5.0 based on requirement.
  • Installing and Managing Virtual Center 5.5.Upgrading from VMWare ESX server from 3.5.0, 4.0.0, and 5.0 in environment.
  • Install and configure the hardware agents on the ESX servers for Hardware monitoring and alerts (SNMP & Open Manager).
  • Managing package install/upgrades using YUM and RPM.
  • Frequently checked ESX server logs for any problems and troubleshoot whenever necessary.
  • Monitored Hardware console for any hardware issues. Troubleshoot any operating systemissues.
  • Worked with application team in resolving any issues related application installed on the servers.
  • Created Root Cause Analysis (RCA) for any server outages and server problems.
  • Monitored ESX server alarms and VM's alarms and acted on those incidents to resolve.
  • Created change tickets for the changes made on ESX servers and guest OS
  • Used VMotion to Hot and Cold migrated VM's from one ESX server to different ESX server.
  • Implemented V2V and P2V conversion using VMWare Converter.
  • Proper power down and up process during Maintenance of ESX hosts or power outage.
  • Taking Snapshots in the environment. Creating templates as per various business requirements.
  • Monitoring: with Centreon/Nagios, Splunk, MySQL Dashboard, Cacti etc
  • Coordinating with various vendors for hardware related issues.
  • Adding new user and assigning permission and shared resources rights.
  • Managing and troubleshooting AD user’s login problems.
  • Attend team meetings, change control meetings to update configuration / installation progress and upcoming changes in environment.
  • Creating Change Controls, Resolving Incident Tickets and Problem Tickets using Service-Now ticketing tool, and ability to multitask in a fast-paced environment under strict SLA and resolve Production Incidents with minimum impact.

Environment: Red Hat Linux 4/5/6, Solaris 8,SVN, HP Blade server, HP DB-380, DL-385, SUN FIRE 6800/E6500/E4500, Service-Now, Sun Sparc1000, IBM RS/6000, Disk suite, HPUX, ESX, LDAP, DNS, NIS, NIS +,SNMP, Shell scripting, Apache, Puppet, WebSphere, Sun and Veritas Clusters.

Confidential

LINUX/ UNIX/SOLARIS ADMINISTRATOR

Responsibilities:

  • Installation, Configuration and Upgrade of Solaris 8/10, Red hat Linux AS 4/5, HP-UX 11i, AIX 5.3, Esx/Esxi 4/5.1 Operating systems.
  • Installation, Configuration & Upgrade of Windows 2000/2003
  • Installation and Configuration and administration of Veritas Volume Manager, Veritas File system and Veritas 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, and Logical Volume Manager.
  • Extensive use of Logical Volume Manager (LVM), creating Volume Groups, Logical volumes and disk mirroring in HP-UX, AIX and Linux.
  • Implementation of RAID 0, 1 and 0+1 levels techniques and the creation of Disk groups and volumes, plex using Veritas Volume manager.
  • Research information for the Configuration Items (CI)s being decommissioned on the standard “EDS-Research Tools” (ADMS, Webwerks, Star Team, CVS) and coordinate with SA to determine interfaces, zones, DNS, cron jobs, ID’s, control tool, domains, cluster or instances to be decommissioned.
  • Worked for mailbox server store (MS Exchange Server) knows as back end server
  • CreatingSummary of Services (SOS)to define project scope that will be implemented by Engineering and Project Managers to meet the deliverables in scope for GSC 36A projects.
  • Submit a request to the NOtA - Network Order Management System to have a Network Engineer engaged to identify, decommission and pull any network cables for the servers in scope for decommission.
  • 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, HP-UX environment.
  • RPM and YUM package installations, patch and other server management.
  • Creating the volumes and creating the file systems (UFS, JFS, 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, soft partitions, 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 EMC Symmetric/Clarion, Hitachi Data System (HDS), HP and IBM Storage.
  • Performed setting up Configuration Server and Boot Server for Jumpstart process and using tape x Recovery for file system recovery.
  • Installed and monitored VMware Virtual environments with ESX servers and Virtual Center.
  • Extensively worked on Solaris 10 container technology, created non-global zones, modified local zone parameters, created file systems on local and global zones.
  • Building Linux servers with BladeLogic and performing LVM on file systems.
  • Worked on server consolidation and migration from UNIX to LINUX.
  • Extensive experience in configuring Global File System(GFS) and Zeta byte File System(ZFS)
  • Performed automated installations of Operating systems using Jumpstart, Flash Archive for Solaris and ignite for HP-UX
  • Maintaining the Backup management and recovery policies using Veritas Netbackup.
  • Maintaining Remedy environments used for the ticketing system.
  • Scheduling of automatic repetitive Jobs, and Shell Scripts with Crontab.
  • 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.
  • Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP.
  • Worked with the individual groups of Domain admin, Enterprise and Schema admin
  • Worked for Active Directory Diagnostic tool
  • Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostat etc) and tuned I/O, memory, etc.

ENVIRONMENT: Solaris 11/10/9/8, Linux RHEL 6/5, HP-UX 11/11i,AIX 5.3L, Windows 2000/2003, Sun Fire 6800/E6500 Server, E10K/15K/25K, T2000, VMware, Redhat Linux AS 4/5, Sun Fire 280, 440, 480, 490, 880, 1280, X2250, EMC, IBM RS/6000, IBM Power 570, p5 505

Confidential

UNIX / LINUX ADMINISTRATOR

Responsibilities:

  • Installation, Configuration & Upgrade ofLinux,Solaris, AIX, HP-UXand Windows operating system.
  • Installation, Configuration & Upgrade of Windows 2000/2003
  • 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.
  • 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.
  • Experience working on EMC Symmetrix/Clarrion, Hitachi Data System (HDS), HP and IBM Storage.
  • 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, fbackup, F-Recovery and DLT tape drives.
  • Written Scripts for automating jobs, performing deployment builds and tested the code.
  • Experience in implementing load balancing using modjk.
  • Maintaining theCPU & Memory utilization of Servers reports on the WEB.
  • Prepared documentation of understanding, deployment instructions for production releases and updated wiki. intra.sears with operation procedures.
  • 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.
  • Worked for public folder server (MS Exchange Server) similar to the mailbox server store
  • 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, Quartz jobs andCron jobs.
  • Worked for Active Directory Diagnostic tool
  • Worked with the individual groups of Domain admin, Enterprise and Schema admin
  • Installed and monitored VMware Virtual environments with ESX servers and Virtual Center.
  • ConfiguringNFS, NIS, NIS+, DNS, Auto-mountand disk space management onSUN servers.
  • Involved in 24/7 high availability on pager rotation basis and coordinated efforts with the offshore team.

Environment: Solaris 8/9/10, VMware Esx/Esxi 3/4, Linux RHEL 4/5, Sun Enterprise Server, SunFire 6800/ E6500/ E4500 & E3500, Windows 2000/2003, Blade Servers, EMC, SAN, JBoss, Apache 2.x, 3.x

Confidential

SYSTEMS ADMINISTRATOR

Responsibilities:

  • Installation, configuration and administration of Red Hat Linux servers and support for Servers.
  • Installation, maintenance and regular upgrades of Red Hat Linux Servers using kickstart based network installation
  • Provided 24x7 System Administration support for Red Hat Linux 3.x, 4.x servers and resolved trouble tickets on shift rotation basis.
  • Provide the support of building the server, patching, user administration tasks, deployment, software installation, performance tuning and troubleshooting and KVM.
  • Managing Compaq and Linux workstations and servers.
  • Installation of patches and other software packages
  • Disk and File system management through Solstice Disk Suite on Solaris and other logical volume manager for other flavor of UNIX.
  • Monitoring system performance, tune-up kernel parameter, adding /removing /administering hosts, users, disks on DNS / NIS domain,
  • Configuration of Hardware and Software RAID on Digital & Sun Servers
  • Installation of Oracle Patches and Troubleshooting, Creating and modifying application related objects, Creating Profiles, Users, Roles and maintaining system security.
  • Administrative tasks such as System Startup/shutdown, Backup strategy, Printing, Documentation, User Management, Security, Network management, dumb terminals and devices carried out.
  • Installation and configuration of Oracle 7.x/8.x.
  • Implemented NFS, DNS and NIS under SUN.
  • Performed the administration of the Domain Name Server and configuration of the Database Files.
  • Wrote bash shell scripts for getting information about various Linux servers
  • Installed and Configured Sendmail Utility on Sun UNIX Servers.
  • Administering NFS Mounts.
  • Troubleshooting Backup and Restore problems Creation of LVMs on SAN using Linux utilities
  • Monitored overall system performance, performed user management, system updates and disk & storage management
  • Performed OS upgrades and Patch loading as and when required.
  • Backing up and restoring files across the network
  • Wrote Technical documentation for various projects and worked with Technical writer to finalize the documents.

Environment: Red Hat Linux 4.1, 4.2, 4.3, 4.4, SunFire 4500/ V880 / V480/ E420R/ E450/ E250, SunStorEdge L280, Sun StorEdge A1000, A5000, JBODs Compaq servers, Solstice Disk Suite, Oracle 7.x/8.x

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