SUMMARY:

• An Optimistic Professional with 7+ years of experience in System Administration in areas of Red Hat Enterprise Linux, VMware and Windows.
• Experience in installation, administration, patching, upgrades, configuration, performance tuning and troubleshooting of RedHatLinux4.x/5.x/6.x, Centos 5.x/6.x, Microsoft Windows 2000/2003/2008 R2/2012 environments and VMware Virtualization Esx/Esxi 4.0, 5.x.
• Experience in Installing, upgrading and configuring RHEL, SUN Solaris Servers using Jumpstart Servers, Flash Archives and Interactive Installation.
• Experience in virtualizing RHEL and Windows environments withVMwareESX 3.5, 4.0 and ESXi 5.0/5.1/5.5 on Dell PowerEdge, HP Proliant and Cisco UCS Hardware.
• Worked with HP DL and Dell Power Edge Model rack, HP blade centers like HP C6000 & C7000 and Cisco UCS.
• Expert in Jumpstart and Kickstart Installation Methods.
• Installing and updating packages using YUM (custom YUM Servers/repositories) and Red Hat Satellite Server.
• Good knowledge in configuring RAID using RAID Manager and LVM in SAN and Host based storage arrays.
• Worked with Database administrators to tune kernel for Oracle installations.
• Experience working with Tools like Ansible, CHEF and Puppet for Application configuration automation on multiple servers.
• Experience setting Multipathing with EMC Powerpath onLinuxand Solaris servers.
• Hands on experience with UNIX file editors like vi and vim.
• Expertise in Veritas Clustering, Redhat Clustering, Veritas Volume manager and Veritas Net Backup.
• Expertise in administering File servers and Print servers.
• File system tuning using Veritas File System (VxFS) and Logical Volume Manager (LVM).
• Expertise in Installing and Managing LDAP, NIS, NFS, FTP, DHCP, SAMBA, SSH and DNS.
• Experience in shell scripting using sh, bash and ksh.
• Experience in Creation and managing user accounts, security, rights, disk space and process monitoring in RedHatLinux.
• Strong experience and understanding of Auto mounts, TCP/IP, SMTP and Printer configurations.
• Installed and configured IBM Web Sphere Application Server 3.5, 4.0, 5.0 on RedHatLinux.
• Created shell scripts to take backup of Oracle database.
• Experience with installation and support of applications which include Apache, Tomcat, Weblogic, Websphere, Jboss.
• Expertise in Windows 2003/2008 R2/2012 server administration and active directory administration.
• Experience in installing, managing and administering Windows 2012/2008 R2 and 2003 based Domain controllers, Backup/Additional Domain Controllers.
• Experience and Strong Knowledge of Virtualization technologies like VMware ESX/ESXi.
• Worked in the area of Virtualization with VMware vSphere, ESX 4.0 servers, ESXi4.1, 5.0, 5.1,5.5 vCenter server 4.0, 5.0, 5.1 and vCenter Converter, VMware Update Manager, VCloud director, VCops.
• Worked withVMwareclusters deployed HP and Cisco UCS hardware.
• Created and managed VMs (virtual machines) and also involved in the maintenance of the virtual machines.
• Experience with enterprise backup systems and disaster recovery operations; familiarity with SAN technologies; solid understanding of Virtualization implementation with shared storage fiber channel, ISCSI, NFS / VMFS strategies for performance and optimization.
• Expertise with IP sub - netting, VLANs, Load Balancing, and High Availability (HA) architectures.
• Strong experience with the VMware HA (High Availability), Fault Tolerance, Distributed Resource Scheduler (DRS), Host Profiles, Templates, Clones, Snapshot Manager, vmotion, storage vmotion.
• Strong analytical, technical and troubleshooting skills.
• Experience in the V2V and P2V migration of Physical servers to VMware ESXi hosts.
• Knowledge of maintaining Business Continuity and performing Disaster Recovery (DR) using VMware Site Recovery Manager (SRM).
• Hands on experience in updating / upgrading ESX servers, Virtual Center servers and VMware ESX/ESXi hosts using VMware Update manager and manual upgrades for Patching.
• Providing 24/7 technical support to Production and development environments.

TECHNICAL SKILLS:

Operating Systems: Linux(RedHat 3.x,4.x,5.x,6.x, Centos 5.x, 6.x), Windows XP/7/NT/2003/2008 R2/2012.

Virtualization: VMware Workstation, VMware Server, VMware Infrastructure 3, 4.0, 5.0, 5.1 and 5.5 (ESX/ESXi server & Virtual Center), VMware vCenter Converter, VMware Lab Manager, VMware SRM, VMware ThinApp and VMware Virtual Desktop Manager.

Hardware: HP Proliant DL 350, 550 G3, G4, G5 & G6, HP Blade C6000 & C7000, Dell Power Edge, Cisco UCS.

Tools: VERITAS Volume Manager, VERITAS Net backup 5.1, Nagios, Puppet, Chef, Web Sphere Application Server 3.5,4.0, Netscape/iPlanet Server, MQSeries, WebLogic Server, Active Directory.

Programming Languages: KSH, CSH, Bash, Python and Perl programming.

File Editors: UNIX Vi and VIM.

RDBMS: Oracle 9i/10g/11g, MSSQL and MySQL.

Networks: NIS, NFS & DNS and Firewalls.

Cluster Environment: Red hat cluster suite, Sun Cluster Servers 2.2, 3.1, 3.2 and VERITAS Cluster Servers 3.x, 4.x.

Protocols: TCP/IP, FTP, SSH, SFTP, LDAP, SSL, SCP, SSL, ARP, DHCP, TFTP, RARP, PPP and POP3.

Backup Management: Veritas Netbackup 4.x/5.x/6.x, ufsdump, Ufsrestore, tar, dd, cpio.

Other Skills: Solaris Zones, LPAR, TSM.

PROFESSIONAL EXPERIENCE:

System Administrator

Confidential, Tempe, AZ

Responsibilities:

• Installed and configured all theLinux(RHEL) servers in the network per specifications of clients.
• Monitored regularly and performed troubleshooting on servers as well as tested and installed the latest software on server for end-users.
• Performed daily maintenance routines on servers, monitored system access, managed file space and tuned the system for optimum performance.
• Experience in Installing, Configuring and Maintaining RedHatLinux (RedHat EnterpriseLinux4.x, 5.x & 6.x) Servers and Windows 2003/ 2008 R2/2012 Servers on Power Edge Model rack, HP blades and Cisco UCS.
• Experience supporting RedHat servers in Production and Development environments.
• Experience in Virtualizing RedHat servers using vSphere 4.1/5.0/5.1/5.5 and managed ESXi servers using vCenter and also worked with ESXi Clusters.
• Installed and Configured RedHat Linux Kick start and booting from SAN and managing multipathing at boot level and OS level using EMC Powerpath.
• Experience in writing scripts to automate jobs and debugging scripts.
• Experience in using protocols like NIS, NFS, SSH, SFTP & DNS.
• Configured LDAP Server and LDAP Client on linux machines for authorization and authentication.
• Worked with TCP/IP network configuration.
• Administered and Configured Logical Volume Manager which involved create and modify file system, logical volume, Physical volume, Volume groups, mirroring and un-mirroring of volume groups, hot spare physical volume.
• Performed upgrade on Red hat Linux whenever required.
• Performed hardware and software installations, upgrades, and maintenance, patch administration, kernel
• Modification/upgrades, file system management, performance and security analysis, and network configuration/tuning.
• Prepared Windows/Unix security standard preparation document and system check procedures to keep the systems secured & updated.
• Backend Solution, Day to day sysAdmin & Monitoring, File sys mgmt. & disk mgmt.,
• Conduct incident management trend analysis within the supported production environment.
• Administered Volume groups and volumes using Logicalvolume manager.
• Installed/Configured Websphere 5.x/6.x and other Application Servers and Administration of Websphere Application Server 6.x with Network Deployment, and Extension Deployment on RedHatLinux.
• Configured File Systems, users and group for Oracle and Websphere.
• Expertise in Configuring Bonded Interfaces for networking and Managing storage using LVM in RHEL and CentOS Operating Systems.
• Creating and deleting and managing user accounts and managing user quotas on the Network.
• Formatted raw disks & partitioned them using the fdisk utility. Created file system using newfs and mounted it.
• Utilized Linux Terminal Server for removing fat client management, save on administration Provide users with a more reliable & secure environment.
• Worked in configuring and setup connectivity between web servers, database servers and directory servers as a process server administrator.
• Configuration and Administration of NFS, DHCP, FTP, LDAP and Sendmail.
• Extensive use of Ansible automation tool to deploy various applications.
• Responsible for Kernel tuning, upgrading of memory and swap area onLinuxservers.
• Installation and configuration of applications like Tomcat, Apache, Jboss both manually and by using automation tool.
• Provide support to the application team and troubleshoot the system related, networking issues and application errors during deployments and performance tests.
• Involved in Designing and Implementing host level migrations and replacing virtualization using P2V and V2V using VMware converter and Platespin.
• Updating and upgrading ESXi servers, vCenter Server, using vSphere Update Manager and VM Tools through manual updates.
• Managed ESXi 5.1, 5.5 hosts using vCenter Server/ vSphere Client and VMware Web Client.
• Upgraded hosts from VMware ESXi 5.1 to 5.5 and 6, using host patching and remediation.
• Performed vMotion and Storage vMotion of Virtual Machines across different cluster with respect to security policies and application development requirements.
• Creation of hot and cold Clones Templates from Virtual Machines (VMs). Deployed Virtual Machines from Templates based on requirements and build documents.
• Performed Virtual Machine Snapshots for Application machines for Migrations and failback.
• Experience with creating Standard vSwitches(vSS), Distributed vSwitches(vDS). Isolated networks were created with separate vSwitches and VMkernel Port Groups. Third party tools such as Wireshark packet capturing tool were used for network traffic monitoring, vMotion, storage and Fault-Tolerance (FT) security and stability.
• LUN creation and storage mapping along with Multipathing and VAAI.
• Provide management of Microsoft Windows 2012, 2008 R2 servers. DNS DHCP and Active Directory.
• Management and administration of Windows 2012 and 2008 R2 Active directory (Created Accounts, Reset Passwords, and Allowed Access to different Directories using NTFS permissions)
• Handled VMware solutions to support multiple storage connectivity options such as Fiber Channel-SAN, iSCSI, NFS (NAS).

Environment: Red Hat EnterpriseLinux5.x/6.x, Windows 2008 R2/2012, VERITAS Volume manager, Veritas File System, Veritas Cluster Server,VMwareESX/ESXi sever 4.0/5.0, VMware Update Manager, SRM, VCops, Oracle 11g, HP Proliant servers BL460, BL685, Cisco UCS Manager, Active Directory, Solarwinds, Remedy.

System Admin (Linux, VMware)

Confidential, Milpitas, CA

Responsibilities:

• Installation, Upgrading and deployment ofRHEL 5.x,6.x on X-86 based HP BL460 G5, G6 and G7 Hardware and Cisco UCS.
• Developed automated processes that run daily to check disk usage and perform clean-up of file systems on UNIX environments using shell scripting and CRON.
• Installation, Configuration and Administration of VERITAS Storage Foundation Suite, VxVM, VxCS and Vxfs for LinuxServers.
• Installing and setting up Oracle and Websphere onLinuxfor the development team.
• Configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager (LVM) commands.
• Worked with Database administrators to tune kernel for Oracle installations onLinux.
• Configuration of Kernel parameters as per application requirement.
• Organizing DR (Disaster Recovery) server tests to make sure the infrastructure is correct and the DR servers are working as expected as in production servers.
• Manage systems using remote consoles like ILO for HP Hardware and Cisco UCS.
• Implementation of SSH for secure transfers and implementation of PKI between servers to enable password less logins between servers.
• Worked on DNS, NIS Master Slave Servers along with required clients.
• Worked on different backup methods for backing up the data when upgrading and migration of Operating system
• Backups, Tar, rsync, rsnapshot and rdiff. Package and patch administration onLinux.
• Implementation of High Availability using Veritas Cluster Server, worked on scripting using shell, bash and Korn.
• Coordinating with Database team to get the necessary DB setup done in the AWS and make sure the DB import is done.
• Scheduled various regular, periodic, future and queue tasks by using crontab.
• NFS management - take care of user accounts/groups, setting up of NFS environment.
• Transferring files from one system to other using FTP and SFTP.
• Monitoring server performance and troubleshooting server related problems to SNMP.
• Processes administration and management like monitoring, start/stop/kill various processes/sub processes.
• Monitor system performance parameters using iostat, vmstat, and fine-tuning.
• Worked with Redhat Satellite Servers using Kickstart Mechanism.
• Preparing servers for Oracle RAC installation which includes tuning the kernel, agent installation, adding NAS storage on 2, 3, 4 node clusters.
• Volume manager. File system Tuning and growing using VERITAS File System (VxFS), coordinated with SAN Team for storage allocation and Disk Dynamic Multi path.
• Experience in installing, administering, updating/upgrading ESX/ESXi servers, Virtual Center servers and windows virtual machines using VMware Update manager and manual upgrades.
• Set up V-Motion, High Availability (HA), Distributed Resource Scheduler (DRS), and relatedVMwareproducts such as VM Workstation.
• Worked on Migration concepts like vMotion and Storage vMotion.
• Application virtualization using VMware ThinApp 4.5 version.
• Worked on NetApp Storage administration & configuration clusters (7-mode and c-mode (Ontap 7.x,8.x, NAS/SAN

Environment: Red Hat EnterpriseLinux5.x, VERITAS Volume manager, Veritas File System, Veritas Cluster Server, VMwareESX/ESXi sever 4.0/5.0, Oracle, HP Proliant servers BL460, BL685,Enterprise scheduling Product.

Confidential, West Falls Church, VA

Responsibilities:

• Administration and support ofLinuxservers (Red HatLinuxand Centos).
• Upgraded Red HatLinux from4.x to 5.x.
• Duties include user administration; scheduling jobs using crontabs, file system maintenance and scripting.
• Built the servers from the scratch level i.e. loading OS, creating file systems and configuring network adapters and HBAs.
• Responsible for Kernel tuning, upgrading of memory and swap area on servers underLinux.
• Configured test environments in VMwareESX Server to build guest OS using cloning.
• Install and configure DHCP, DNS (BIND, MS), web (Apache), mail (SMTP, IMAP, and POP3) and file servers onLinuxservers.
• Experience in Network Monitoring Application Software such as Nagios.
• Configured and performed troubleshooting Samba over Red HatLinuxServers.
• Configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager (LVM) commands.
• Configuration and maintenance of NIS, NFS, DHCP and DNS Servers on RHEL/Solaris.
• Administrative tasks such as System Startup/shutdown, Backup strategy, Printing, Documentation, User Management, Security, Network management, dumb terminals and devices carried out.
• Responsible to handle the Server Administration and Asterisk Server Installation and Configuration in Linux. .
• Worked as part of Testing Team in Application testing using Manual methods and Scripts.
• Installed and implemented NAS with RAID 1 and RAID 5 configurations.
• Monitored load and performance on the infrastructure and added capacity as needed.
• Installation, configuration and management of postgresql & mysql database servers.
• Management, Security, Network management, dumb terminals and devices.
• Maintained availability, increased capacity & performance of production machines by upgrading their hardware & firmware.
• Written Shell scripts to run Batch Jobs on Sun Solaris and Red Hat Linux servers.
• Involved in discussions with design and platform engineering team.
• Worked with DBAs on installation of RDBMS database, restoration and log generation.
• Worked in a fast-paced 24x7 production environment comprising Red HatLinuxand Windows Servers.
• Performed troubleshooting of operating system and software infrastructure issues on Domain Controllers, Member Servers, Server Clusters, and Virtual Machine Farms.
• Configured VMware on clustered environment, Implemented Migration of Virtual Machines using VMotion, sVMotion.
• Configured the standard cluster settings on vCenter clusters.
• Configured windows clustering for vCenter server high availability.
• Upgraded Win Server 2003 to Win Server 2008 with minimum or null impact on services provided to customers.
• Involved FTP Server configuration inLinuxand done kernel tuning onLinuxfor play out software.

Environment: Red HatLinux4.x/5.x, Centos 5.x, Windows 2003/2008 R2, Oracle 9i, EMC SAN (Symmetric), Netapp On Command Manager, ESX 4.0, Esxi 5.0, vCenter, vMotion, storage vMotion, DRS, HA, FT, Apache, Samba, Nagios, DHCP, SMTP, DNS, LVM, Shell Programming (bash, ksh), DELL PowerEdge 1650, HP, Cisco UCS.

System Admin

Confidential, St. Louis, MO

Responsibilities:

• Administration, Installation and maintenance ofLinuxand Windows Servers.
• System monitoring and security. Wrote various shell scripts to monitor system services and trigger email notifications.
• Storage setups, RAID, Logical Volume Manager, system backup design and disaster recovery.
• Systems performance monitoring.
• Managing file systems and disk management using LVM. Creating and restoring the backups inLinux.
• Installation, configuring all the hardware, peripheral, operating system and software to effectively deliver system time.
• Configuration and administration of NFS environment.
• Solaris Operating Systems upgrade, package installations, updates, patches and software fixes.
• Bourne and K-shell scripts were developed for regular system maintenance.
• Troubleshooting and fixing the issues at User level, System level and Network level by using various tools and utilities.
• Maintaining updated documentation of all the Servers and the installed applications and patches.
• Involved in the TCP/IP network configuration, Creating and deleting the user accounts across the location.
• Worked with off-shore team and provided required support.
• Monitored and maintained backups in Symantec.
• Managing Remote Servers through Terminal Services Manager.
• Maintaining corporate DNS system.
• Monitored server and application performance & tuning via various stat commands (top, sar, iostat, vmstat, netstat, mpstat, prstat, nfsstat, prtconf, prtdiag, iostat, top, printmgr, hpimliview, dmidecode, smc etc) and tuned I/O, memory etc for SUN Solaris and RHEL Servers.
• Routine maintenance activities for optimal performance
• Installing and Set up Print servers in the Network.
• Creating Virtual Sites and Directories in IIS and FTP server.
• Management of system back up and data archiving procedures for all business hosted on our production and development servers using Legato Backup tool.
• Installation and day-to-day maintenance of Sun Solaris hardware and software.
• Installation and management of software applications licensed from third-party vendors, which run on the Sun Solaris, and Linux based servers.
• Performance tuning and management of all systems to deliver optimal performance.

Environment: Red HatLinux3.x/4.x/5.x, Windows NT/2003, LVM, Sun E10K and E15K Servers, Sun Enterprise 6/450/ 420R/250 Servers, Active Directory, Networking, DNS, DHCP, TCP/IP.

System Admin (Linux,windows)

Confidential, Plano, TX

Responsibilities:

• Planning of OS upgrades for existing infrastructure.
• Planning and Implementation of Kernel patches on Solaris and Linux Servers.
• On-call support using the Remedy Ticket System for routine system administration issues.
• Tuning of the TCP/IP stack for troubleshooting application and OS issues.
• Responsible for installation and maintenance of the HP-UX and Solaris Servers.
• Responsible for downloading and upgrading the patches as per the system requirements.
• Support the PeopleSoft/Weblogic team by helping in the OS and Application upgrades and installation of new SSL s for Weblogic8.1.
• Maintenance of VERITAS Cluster Server.
• Used NetBackup for backing up & restoration of file systems.
• Built new servers using Custom jumpstart installation and Kick start.
• Securing services using TCP wrapper and SE Linux.
• Worked with Firewalls using IP Tables.
• Open SSH configuration.
• Worked on upgrades without downtime using yum and as well as setting servers locally for upgrades.
• Repairing the corrupted file system using FSCK.
• Network Interface configuration.
• Created Logical Volumes (LVM) for Linux operating system.
• Worked extensively on VMware (virtualization
• Responsible for managing the OS test, release and push process.
• Maintained, updated and audited system documentation.
• Installation and Implementation of Apache Tomcat Application Server.
• Responsible for adding and maintaining users on the network.
• Supported and implemented system standards, processes and security to maintain corporate IT standards.

Environment: Solaris 9,10, HP-UX 10.20,11.0/11. i, Linux (RHEL 2,3,4), LVM2, Jumpstart, Solaris Volume Manager(SVM), VERITAS Volume Manager, Sun Fire 2900, 4900, 6900, Sun Enterprise Server T5140, T1000 and T2000 and M4000