SUMMARY

• IT System Administrator with more than 6+ years of experience in the areas of Linux, VMware and Windows.
• Installing, upgrading and configuring Redhat Linux 4.x, 5.x and 6.x Using Satellite Servers.
• Experience working in customizing the Kickstart and Jumpstart scripts to automate the installation of various servers used for various internal projects.
• Responsible for Backup and Recovery operations of various servers using VERITAS Net Backup and Clustering.
• Working Knowledge on using and developing basic shell and python scripts used to automate day to day administrative tasks.
• Responsible for OS maintenance activities like upgrading the OS, updating the services and third party software’s.
• Worked in maintaining integrity ofLinux by performing patching operations on a regular and planned way.
• Working knowledge on TCP/IP, UDP protocols in solving network related issues on the servers.
• Working knowledge on Firewall scripts and securingLinuxproductions systems.
• Performance tuning ofLinuxmachines in the environment by kernel parameter tuning, identifying process that hog the system resources and containing them.
• Installation and configuration of Web Application servers like Apache, Tomcat and Weblogic.
• Deployment & system configuration Automation by Puppet and Chef automation tools.
• Have tested variousLinuxEnvironments in the Dev/Test/Prod Stages to help create a better standardized environment and resolutions of any problems if any occurred.
• Implemented day - to-day tasks in RedHat Linux include upgrading RPMS, kernel, HBA driver, configure SAN Disks, Multipathing and LVM file system.
• Install and configuration of Web hosting administration HTTP, FTP, SSH, & RSH.
• Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.
• Installation and Configuration of Mail server of Sendmail, and Postfix.
• Problem determination and troubleshooting, Security using SSH and Shell Scripting.
• Expert in Installing, configuring and maintaining apache/tomcat, samba & send mail, Web Sphere, Web Logic, and Application Servers and created domains and managed servers.
• Expert in installing, configuring and implementing the RAID Technologies using various tools like Solaris volume manager.
• Expert in Deploying Enterprise and Java Applications and Monitoring the Application servers and Web servers, troubleshooting performance issues using the Log messages and Log files.
• Resolving system errors and crashes, huge file sizes, file system full errors and Installing network Printers and rectifying the Printer problems over the network.
• Configured Networking Concepts Jumpstart, DNS, NIS, NFS, LDAP and AUTOFS, troubleshooting network problems such as TCP/IP, providing support for users in solving their problems.
• Proficiency in Installation, Configuration, and TroubleshootingVMwareESX & ESXi 5.1, 5.0, 4.1, 4.0, 3.5, vSphere 5.1, 5.0, 4.1, 4.0, and Virtual Center 5.1, 5.0, 4.1, 4.0.
• Build and troubleshooting experience in Windows Server 2003/2008/R2 withVMwareESX Server, ESXi Server Environment and vCenter Server.
• Excellent understanding on ESX Architecture, guest OS installation, setting up of VM priorities, Cloning and Snapshots, Virtual Network, ESX Server, ESXi Server & Virtual Machines, Templates from VMs and deploying VMs from Templates.
• Solid understanding on resource management framework like creating Resource Pool, adding the VMs into Resource Pool, P2V and V2V conversions by usingVMwareConverter.
• Extensive experience in vMotion Technology, Storage vMotion Technology,VMwareHA andVMwareDRS.
• Worked along with Monitoring teams to identify and troubleshoot issues on servers.
• Handling day-to-day User Administration tasks like adding, deleting and modifying user data and documenting all user data in a centralized location.
• Experience in Active Directory, GPOs, DNS, DHCP, File & Print Server, IIS (Web Server), FTP, Terminal Server, Microsoft Clustering and Exchange Mail Server in Windows based server environment.

TECHNICAL SUMMARY:

Operating Systems: Red Hat EnterpriseLinux4.x, 5.x, 6x, Centos 4.x. 5.x, 6x, Microsoft 2003/2008/R2, Windows 98/XP/Vista/7 and Windows 2003/2008 R2, MS-DOSServices: NFS, SSH, SFTP, FTP, rlogin, RPM, YUM, Samba, Auto FS, Telnet, MTP, POP3, IMAP, FTP, TFTP, SIP, IAX2, DHCP, NFS, SMB, SNMP, IPMI

Languages: HTML, C/C++, Java Script, SQL, XML, Bash, Python & Shell Scripting.

Virtualization: View 4.5 /ESXi4.1,5.0,5.1,5.5/VMWare vSphere 4.0, Site Recovery Management (SRM), VMware infrastructure 3.0/3.5,ESX 3/3.5, vCloud Suite 5.1, vCenter Lab Manager 4, vCenter Server, vCenter Update Manager, Symantec backup,Double Take Converter, vCenter Operations manager(vCOPs), Platespin, vSphere.

Networking: TCP/IP, UDP, LAN, WAN, NIS, LDAP NIS+, DNS, DHCP, NAS, SAN.

Hardware: DELL Power Edge servers, HP Blade servers, HP Proliant servers and Other HP hardware Net gear, Cisco & HP Switches, EMC SAN, VMAX, DMX, EMC Clarian, NetApp, SAN and Dell Equalogic.

PROFESSIONAL EXPERIENCE

Confidential

Linux/ VMware Administrator

Responsibilities:

• Installation, configuration and Operating System upgrade on, Red HatLinux3.x, 4.x,5.x, 6.x.
• Developed Cron jobs and Shell Scripts for automating administration tasks like file system management, process management, Server reboots etc.
• Worked with Oracle DBA’s for restore of Oracle Instance and Building Oracle RAC Cluster.
• Installed/Configured the WebSphere server, JBoss application server, Weblogic server; Managed tuning and performance of high profile applications running on them.
• Veritas File system and Veritas Volume Manager 2.5 are used to configure the RAID 1 and RAID 5 Storage Systems
• Installed and configured SAMBA server for windows andLinuxconnectivity.
• Installed and Configured Sun availability Suite 3.5 to implement Point-in-time snap shots and remote mirroring.
• Implemented and configured Backup policies and Storage Units.
• Managing disk storage with Veritas Volume Manager 3.5/4.1 with Veritas File System (VxFS).
• Installed Web Logic 8.1 with SP5 Server and configured Domains, Admin and managed servers for Applications to be deployed.
• Implemented NIS and NFS for administrative and project requirements.
• Experience configuring SMTP utilizing postfix and send mails.
• Experience on both Internet and Intranet WWW, Mail, DNS, DHCP, PPP and various other virtual web servers (all servers running Linux).
• Installed and Configured Web and investigate the configuration changes in the production environment.
• Responsible for multicasting of various components as a system administrator.
• Worked closely with database administration staff to ensure optimal performance of databases, and maintain development applications and databases.
• Tuning the kernel parameters based on the application/database requirement.
• Monitoring system resources, logs, disk usage, scheduling backups and restore.
• Set up Quotas for the user accounts & limiting the disk space usage.
• Configuring SUDO and granting root permission to users for performing certain activities.
• Upgrading RHEL 5.x to RHEL 6.x using live upgrade and manual upgrade.
• Worked on network connectivity, SAN storage, creating LVM and taking TSM backup.
• Installation, configuration Active Directory, Group Policy, Migrations, Security GPOs, DNS, DHCP, File & Print Server, IIS (Web Server), FTP, Terminal Server, Microsoft Clustering and Exchange Mail Server in Windows based server environment.
• Created BASH shell scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation.
• Installed Deployment & system configuration Automation by Puppet server.
• Modifying user’s password policies, group policy, UID and GID assignment policies.
• Monitored the performance of the system using top, sar, ps, prstat, vmstat, netstat, iostat, and cpuinfo to check the CPU utilization, bottlenecks of I/O devices,, memory usage and network traffic.
• Troubleshoot network connectivity used ping, netstat, ifconfig, and trace route commands. Login to the remote system using sudo, putty, and telnet. Transfer files across the systems on the network used ftp, scp, and rsync commands.
• Linuxtechnical support and prepared technical documentation for check in verification.
• Regular backing up of critical data and restoring backed up data. Worked in solving tickets issued on day to day activities and problems related to development and test servers.
• Installation, configuration, administration, troubleshooting and maintenance ofVMwarevirtual infrastructure (ESX 3.x and ESXi 4.x vSphere) platforms.
• Creation and management of Virtual Machines and Templates.
• Creation of clusters for (HA) High Availability, (DRS) Distributed Resource Scheduling and vMotion.
• ManageVMwarevirtual infrastructure with Virtual Center Server.
• Conversion of physical servers to virtual environment using P2V andVMwareConverter.
• Expertise in P2V Migration using VMware Converter. Expertise configuring Aggregates, Volumes, LUNs and Initiator’s groups to create and modify LUN’s using On Command Manager.
• Administering rights for Users and Groups for Virtual Center access.

Environment: Red HatLinux3,4,5,x 6VMwareESX 3.5, vCenter 5.1, ESXi 5.1, Windows Server 2008 R2, Volume Manager, Veritas Cluster Server, Weblogic 8.1, Samba, Oracle 9i/10g, HP DL 385 G6, HP DL380 G7.

Confidential, MA

System Administrator

Responsibilities:

• Linuxadministrator, responsible for providing for 24x7 support for production and responding to users’ tickets from remedy.
• Implemented the Jumpstart servers and Kickstart Servers to automate the server builds for multiple profiles.
• Administered Network File Systems using Automounter and administering user and OS data files in NIS and NFS environment on RedhatLinux environments.
• Maintained user account management, configured servers to register with Red Hat Network (RHN) Satellite Server, monitored servers - workload assessment, service console monitoring.
• Installation and configuration of database systems e.g. MySQL, Oracle10g in RHES, Centos environment.
• Configuration of DNS servers on Linuxfor zones file, adding hosts to files.
• Performed upgrades of Packages and Patches in Oracle Linux and Linux
• Installed and configured Oracle Real Application Cluster (RAC) on Linux Servers.
• Created Volumes and File Systems using Veritas Volume Manager 4.0 and Veritas File System 4.0 (Foundation Suite) and LVM onLinux. Created disk groups, volumes, file systems, resizing the volumes and file systems.
• Administered the File Systems and troubleshooting NFS issues.
• Supported proactive maintenance on systems by timely upgrading Patches to the systems and applications, Scheduling batch jobs and cron jobs.
• Installed and Configured Tomcat and Jboss for Web Application deployment.
• Scanned Web and Application servers on a regular basis to check for security holes that need to be patched.
• Responsible for the installation, configurations and support of VMware vSphere and the daily management/monitoring of the virtual environment.
• Build, configure and deploy VMs and Templates and cloning VMs and application data.
• Used VM converter for converting Physical machines in VMware VMs.
• Updating /patching Linux, Windows Virtual Machine in VMware clusters.
• Writing Bash and Perl scripts for backup and automation.

Environment: RHEL 4.x, 5.x, Veritas Foundation Suite, Veritas Volume Manager, Tivoli Storage Manager 5.x, Veritas Cluster Servers, VMware ESX 4.x, 5.x, vCenter, VMware Update Manager.

Confidential, Atlanta, GA

System Admin

Responsibilities:

• Installation and Configuration of RHEL Servers.
• Installation, configuration and management of Apache and Tomcat servers.
• Performing Nessus Scan on quarterly basis to scan for vulnerabilities in Web and Application servers.
• Applying patches to fix the holes that are found during the quarterly scan basis using Nessus scan.
• Upgraded and maintained servers, operating Systems and patches.
• Install/configure/maintain the Solaris /Linuxservers, NIS, DNS, NFS, Mailing List, Sendmail, apache, ftp, sshd.
• Install host firewall IPTables for RedhatLinux.
• Installed and monitored administering and monitoring tools such as Webmin and Nagios.
• Administered Backup and Restore operations using Veritas NetBackup 5.1.
• Responsible for managingVMwareenvironment, knowledge of implementingVMwareHA, DRS
• Worked on differentVMwareproducts likeVMwareESXI server, Lab Manager,VMware
• Workstation andVMwareplayer.
• Experience working in a high-availabilityclustered environment.
• Experience withVMwareupdate manager to install patches and updates on ESX/ESXi 4.0, 5.0 hosts and virtual machines.
• Experience with backup and restore of Virtual Machine backup, snapshot, P2V-V2V conversation.
• Experience withVMwareconverter and with other third party converters, Patch updating, monitoring/reporting, SSH and SNMP and notification of alerts.
• Administration of DNS, DHCP, WINS in Active Directory Environment.
• Upgraded Memory, CPU and Disk size on the existingVM's.

Environment: RedHatLinux4.x 5.x,VMwareESX, Solaris 9, Veritas volume manager, SSH, Windows server 2003/2008 R2, Active Directory.

Confidential, Sunnyvale, CA

Linux Administrator

Responsibilities:

• Upgraded Memory, CPU and Disk size on the existingVMwareSessions on ESX Servers
• Installation, Upgrade and configuration of RedhatLinuxRHEL 3.x, 4.x and Windows 2000, 2003 servers.
• Strong Knowledge in creating various objects like User Accounts, Computer Accounts, and Auto logon accounts.
• Assigning folder permissions to the users by gathering approval from the group owners.
• Involved in creating new users, groups and setup their home directories and appropriate access restrictions to software in the Active Directory environment and NIS domains.
• Managed performance of the server and resolved issues with Virtual Memory and swap space on operating environments.
• Configuring & monitoring DHCP server.
• Remotely coping files using sftp, ftp, SCP, winscp, and filezilla.
• Log management like monitoring and cleaning the old log files.
• Configuration and administration of DNS (Bind onLinux), Web (Apache), Mail (Exchange 2003), DHCP and FTP Servers.
• Manage system installation, troubleshooting, maintenance, performance tuning, managing storage resources, network configuration to fit application and database requirements.
• Documenting the configurations, changes made on any part of System and Network.
• Involved in Backup of data on DAT tape drive, security, performance and availability of system and network.
• Efficiently created and managed various Groups (Domain Local and Global Security
• Worked on HP Open View Service Desk (OVSD) tickets.
• Raised tickets for any issues discovered during validation.

Environment: RedhatLinux3.x, 4.x, Windows 2000, 2003, Exchange 2003, Apache 1.3.x, IIS 5.0, 6.0 and Oracle 8i, 9i, VMware ESX, Active Directory, FTP, SFTP.