SUMMARY:

• 8 years of experience in Linux systems administration and application support. Proficient in Red - hat Linux. 
• Involved in installation, configuration, upgrading, patching and administration of RHEL 4.x, 5.x, 6.x, 7.x OEL 5.0/6.0 and Centos 5.0/6.0 Servers. 
• Experience working on Sun Solaris v 8/9/10/11, Redhat EL v 4.x, 5.x, 6.x, Oracle Enterprise Linux, IBM AIX v 6.x.
• Experience in automation using Shell & Perl scripting,Python, Ruby and also experience in using automation tools like HPSA and Chef.
• Experience working with SAN Swicthes like Brocade and Cisco MDS Directors.
• Involved and executed SAN migration including Zoning & LUN Provisioning.
• Experience building servers in Amazon EC2 cloud environment.
• Experience working with Datacenter environment and supporting Linux and Solaris servers with EMC SAN environment.
• Experienced in configuring Kickstart and Jumpstart servers to initiate installation of RedHat Linux and Solaris on several machines at once. 
• Comprehensive Knowledge of Linux kernel tuning, patching and extensive knowledge of Linuxsystem imaging/mirroring using System Imager. 
• Experienced with UNIX Administration, EMC Storage Administration, Enterprise Hardware Troubleshooting and Capacity Planning. Involved in complete Administration tasks on UNIX (SUN Solaris, RedHat Linux) and documentation for the projects executed.
• Expertise in Linux Enterprise using HP Proliant Servers andVirtual Connect Technology. 
• Expertise in RedHat Satellite Server installation, RedHat Linux Kick start, System Imager,SUSE Autoyast and Jumpstart in Solaris. 
• Experience in installation, configuration and maintenance of VERITAS Cluster Server, Sun Cluster and HP Service Guard for failover and redundancy purpose. 
• Experienced on installation, configuration and managing virtual infrastructure and virtual center. 
• Worked on installation and configuration of ESX and ESXi server on Hp and Dell hardware. 
• Experienced on Installation and configuration of virtual machines in an Enterprise SAN and NAS environment. 
• Experienced in Logical Volume Management on Linux with LVM Knowledgeable in HTTP, HTTPS, SMTP, FTP, SFTP, DHCP, DNS, SNMP TCP/IP, UDP, ICMP, VPN, POP3 protocols. 
• Experience in writing Shell scripts using ksh, bash, and perl, for process automation of databases, applications backup and scheduling. 
• Expertise in setting up SSH SCP, SFTP connectivity between UNIX hosts. 
• Experienced in DNS, NIS, NFS, FTP, NIS+, Samba Server, LDAP, remote access, security management, and system troubleshooting skills. 
• Experience in virtualizing Operating Systemservices using Solaris Zones and Containers, configuring and maintaining global and local zones. 
• Experience in using VERITAS Volume manager. Creating new file systems, mounting file systems and unmounting file systems, Hands on experience in Tivoli Storage Manager (TSM). 
• Experienced with Unix Administration,EMC SAN Administration, NetApp, and Qnap& NAS administration.
• Proficient with user account maintenance, backup & recovery, Auto-mounting, License Management and Printer configuration. 
• Have very good experience working with Change Management for scheduling changes on Production and UA server using BMC Remedy Ticketing System. 
• Experience supporting 7x24 production computing environments, experience in providing on-call and weekend support.

Hardware: Cisco UCS, Sun Enterprise 250,450,3500,4500, 280R, V480, SunFire 4800, SunFire 6800, Sun Fire Starcat E15K Servers, M5000, T2000, T5240, x4100, x4250, x4440, HP 9000 K580, rp4440, rx3600, rp 3410, rx6600, N2500, DELL PowerEdge 1650, 6400, M905 with 1000e enclosures, HP Proliant DL 380, 385, 580, 585, HP Blades C6000 & C7000, HP Net Server L series, Micron, & Acer Intel Servers, DLT, AIT, DAT & CTD Backup Devices, Jukebox, Ethernet Hubs.

Server Management: SUN Solstice Disk & Admin Suites, VxVM, SMC, HP Open View, Network Node Manager, Compaq Insight Server Manager & Intel LAN Desk Manager, Nagios, BMC Patrol and Predict.

Languages: C, C++, XML, PHP, PL/SQL, Shell Scripting - ksh, Bash, Ruby, csh & Perl

Data Base Servers: Oracle 8i, 9.2.x,10, MySQL and Sybase on Solaris and Red Hat Linux and Win NT/2000, MySQL 7, 2000 on Win NT/2000.

Networking Protocols: SNMP, SMTP, TCP/IP, IPX/SPX, NetBEUI, OSPF, BGP, IGRP, EIGRP, PPP, SLIP, UUCP, X.25, LAN, WAN,PCNFS, ARP/RARP, LDAP, FTP/TFTP, RIP, DHCP, DNS, NIS, NIS+, Automounter.

Desktop Applications: Acrobat, Paint Shop Pro, MS Office, Novell Group Wise, Corel Perfect Office, MS Works, Open Office, Dreamweaver, FrontPage, and many others.

Internet & WWW: Apache Web Server 1.2, 1.3.x, 2.x & Tomcat on Windows, Linux and Solaris, IIS 4.0, 5.0, 6.0, iPlanet 6.x, WebLogic 6.x, 7.x, 8.x, 9, 10, JBoss 4.2.x, Sendmail, Postfix, Mozilla, Webmin

Security Hardware/Software: Checkpoint 2000 VPN-1/Firewall -1, Cisco PIX version 5.1, 6.2, iptables 4, iptables 6.

EXPERIENCE :

Confidential,Bethesda, MD

Sr.Linux/Unix Administrator

Responsibilities: 

• Installed, configured and administration of Tripwire on Redhat 5/6/7, Windows serverand Centos operating systems. 
• Involved in Installing, Configuring and Upgrading of RedHat Linux AS 4/5/6, Solaris 9/10/11 operating systems. 
• Maintained and configured VMware ESX server and Vcenter via web access. 
• Upgraded/Installed BMC patrol agents on all servers including Redhat Linux, Solaris & AIX in our environment.
• Experience in Installation and Configuration of LDOMS 1.2&1.3 (Control domain, I/O domain, Logical domains) Virtualization in Solaris 10.
• Fast provisioning and configuration management for Ubuntu utilizing Cloud Formation on Amazon Web Services.
• Installation of Linux servers and creation of VMS’s using the web console vCenter on VMWare ESX.
• Experienced on Installing, Configuring and Upgrading of RedHat Linux 5/6, Centos 5/6 operating systems. 
• Utilized AWS to set up Virtual Private Clouds (VPCs) for Management, Production and Testing environments with customer operational requirements and parameters (e.g., internet gateway, subnets, elastic IP, and Security Groups).
• Utilized other AWS Cloud Computing platforms and its many dimensions of scalability including but not limited to: VPC, EC2, ELB, IAM, SQS, S3, auto scaling architectures, using EBS under high I/O requirements, custom monitoring metrics/analysis/alarms via Cloud Watch, the AWS CLI, to meet client's needs and project requirements.
• Installation, Maintenance, Administration and troubleshooting of Red Hat Enterprise Linux 5/6 and Solaris 9/10 systems. 
• Performed automated installations of Operating System using kickstart for Red Hat Enterprise Linux5/6 and Jumpstart for Solaris 9/10 Linux. 
• As a Red Hat administrator primary responsibility includes building of new servers which includes rack mounting, installation of OS, configuring of various OS-native and third party tools, securing of OS, installing &configuring, job scheduling.
• Remote monitoring and management of server hardware.
• Involved in Server sizing and identifying, recommending optimal server hardware based on User requirements.
• Installed Red Hat Enterprise Linux 5/6 and Solaris 10 Operating System on servers and Blades over the network.
• Configured and managed virtual machines and installed VM Tools into VM's.
• Enterprise Storage Administrator of VNX, Extreme I/O, VMAX, VPLEX.
• Configure and maintain Windows 2003 Server that runs DNS, DHCP and active directory services.
• Wrote UNIX Shell, Perl, and bash scripts to perform admin tasks.
• Used RPMs to install, update, verify, query and erase packages from Linux Servers. 
• Administered and supported distributions of Linux, including Linux Enterprise Desktop, SUSE LinuxEnterprise Server, and RedHat and also Solaris. 

Environment:Redhat Linux 5/6, Oracle Linux 5/6, solaris 9/10, AWS, JumpStart, Automount, HP openview, HPSA, Veritas, Symantec Netbackup, Chef, Puppet,, VOM, Shell/Perl programming, NFS, DNS, FTP, and Puppet.

Sr.LINUX/UNIX Administrator

Responsibilities: 

• Building, Installing, Configuring servers from scratch with OS of RedHat Linux.
• Configuration and Administration of VERITAS Volume Manager and High Availability.
• Installing Patches to the current version, Packages related to hardware, and system customization.
• Configuration of MySQL, Oracle PL/SQL database.
• Experience virtualizing Physical Redhat Linux servers by migrating them to VM's on VMWare ESX and vSphere.
• Experience performing migrations of Applications from different UNIX servers like Solaris, HPUX to Redhat Linux.
• Work Experience on Ubuntu operating system includes package building, patching, and installation.
• Experience installing Linux servers using Kickstart and Cloning on ESX servers.
• Configured Volume groups and logical volumes, extended logical volumes for file system growth needs using Redhat Logical Volume Manager (LVM) commands.
• Experience supporting applications installation and configurations like Apache, Iplanet, Weblogic, Websphere and Databases like Oracle, Sybase &DB2. 
• Experience configuring Satellite and Repository servers to perform RPM installations across the environment. 
• Performed centOS and custom Linux deployments utilizing Packer, Puppet and Chef with scalability in AWS. 
• Performed the automation using RHEL 7, Chef Configuration management and managing the infrastructure environment with Puppet. 
• Experience migrations and Virtualization from P2P & P2V.
• Configuration and Administration of VERITAS Cluster Server (VCS), fail over test of VCS group and adding/modifying VCS resources. 
• SAN storage experience with a focus in NetApp and EMC (Symmetric) from a host level.
• Creation of Volumes and file systems on SAN disks using Redhat LVM and VERITAS Volume Manager. 
• Extensive experience working with HP hardware likes HP Proliant servers DL 360, 380 & 580 G4, G5 & G6 servers and also Blade Centers like C3000 & C7000. 
• Activities include user administration, startup and shutdown scripts, crontabs, file system maintenance and backup scripting and automation using shell scripting (BASH, KSH) and Perl for RedHat Linux systems.
• Troubleshoot hardware, software and Operating system related errors onLinux.
• Implementing Software and Hardware RAID at HW and OE level.
• Configuring Virtual Machines under VMWare ESX 4.0 servers to install Linux guests. 
• Performance monitoring and Tuning using top, prstat, sar, vmstat, ps, iostat etc. 
• Experience working with configuration management software like Puppet and involved inmanaging puppet master server.
• Experience working with Oracle RAC, PL/SQL.
• Good hands on experience with shell scripting. 
• Experience with working on a network that is hosted at a datacenter managed by a 3rd party vendor. 
• I have worked with LAMP (Linux, Apache, My-SQL (database), Perl and Python) and CDN. 
• Worked on Amazon Web Services AWS (Cloud Computing).
• Worked on tools like TCP Dump/Wireshark.

Environment:RHEL Linux 5.x, AIX, OEL, SAN, NAS, VERITAS Volume Manager, VCS, VERITAS Netbackup, AWS, VMware ESX, SAN, NFS, Shell Scripting.

Linux/UNIX Systems Administrator

Responsibilities:

• Installation RedHat Linux Enterprise Server 5/6 on Dell and HP x86 HW. 
• Installed and configured Solaris 10/11 on Sun T and M Series servers Mirrored root disks on all the servers by using ZFS &VxVm. 
• Responsible for Installation, Configuration Management, Maintenance and Systems Development of AIX Systems. 
• Day-to-day administration on Sun Solaris which includes Installation, upgrade and loading patches. 
• Installation of Web logic, upgraded to service pack updates, installed BEA patches, configuring and creation new domain & services starting & stopping. 
• Veritas Netback up installation, Catalogue backup and maintenance Backup/restore on ADIC (Intelligent Storage -Scalar i2000k - Library Management Console) using server Windows NT/2000 & Sun Solaris server and checking the job failures.
• Worked on HMC for creating profiles and Lpars, Worked on creating file systems on AIX. 
• Extensive experience creating LPAR DLPAR using HMC. 
• Installed, managed Verities Volume Manager 5 (VxVM) on Solaris 10. Created Veritas File Systems. 
• Production support of Apache and JBoss including installation, configuration, management and troubleshooting. 
• Installation and monitoring of Veritas Volume Manager, VeritasNetBackup and Veritas Cluster Server on SAN Environment. 
• Involved in installing Puppet client on RedHat & Solaris servers for Automation purpose. 
• Installed and configured the RedHat Linux 5.1 on HP-Dl585 servers using Kick Start. 
• Configured the NIS, NIS+ and DNS on RedHat Linux 5.1 and update NIS maps and Organize the RHN Satellite Servers in combination with RHN Proxy Server. 
• Installed and configured the RPM packages using the YUM Software manager. 
• Configured logical volumes using logical volume manager (LVM) and also configured mirroring. 
• Installation of Oracle10g on Linux and Solaris, creating database, creating Oracle users & export and importing database, creating rollback segment etc. 
• Production support of Apache, PHP, My SQL, Tomcat including installation, configuration, management and troubleshooting. 
• Involved in developing custom scripts using Python, Perl & Shell (bash, ksh) to automate jobs. 
• Merged the generated reports as per request. Formatted data into required format using UNIX Shell Scripts, SED and Awk. 
• Networking communication skills and protocols such as TCP/IP, Telnet, FTP, NDM, SSH, rlogin. 
• Written shell scripts and Perl scripting to take backup oracle database. 
• Kick start the RedHat Linux RHEL 6 on HP Power edge servers and Cisco UCS servers.
• Configured Logical storage Manager (LSM) for root disk encapsulation and implemented root disk mirroring for fault tolerance.
• Worked on the administration of the Web Logic 9, JBoss 4.2.2 servers including installation and deployments. 

Environment:REDHAT LINUX 4.x,5.x,6.x, SUN fire T2000, IBM P-series, LPAR, T4k, M 5000, and Veritas volume manager5.x, Veritas Net backup 6.5, Web logic 10.x., Oracle 10G/ 11i/RAC, Volume Manager, VMWare ESX SERVER,, Shell scripting, SAN/Mc Data Switches , Brocade Switches, RedHat satellite server.

UNIX/LINUX SystemsAdministrator

Responsibilities: 

• Involved in Installing, Configuring and Upgrading of RedHat Linux AS 4/5,Solaris 9/10 operating systems. 
• Responsible for installation, configuration and administration of RHEL 4, Sun Solaris 9/10 and SLES 9.
• Installed and configured JBoss application server on various Linux servers.
• Configured Kickstart for RHEL (4, and 5), Jumpstart for Solaris and NIM for AIX to perform image installation through network. 
• Installed/Configured/Maintained/Administrated the network servers DNS, NIS, NFS, SENDMAIL and application servers Apache, Websphere, Jboss, Webogic, Oracle E-business suite and Samba on Linux. 
• Administered and supported all distributions of Linux, including Linux Enterprise Desktop, SUSE Linux Enterprise Server, and RedHat. 
• Implemented Virtualization using VMware ESX Server in Linux on HP-460C Blade, Dell-2950. 
• Created Korn shell scripts to monitor system resources and system maintenance and Performed administrative tasks such as System start-up/shutdown, and Backup strategy and scheduled cron jobs for job automation. 
• Worked extensively on VxVM, LVM, Solaris Logical Volume Manager and VERITAS CLUSTER.
• Used VERITAS Netbackup tool for backup and recovery.
• Responsible for DNS and Configured DNS Servers and Clients, troubleshooting system and DNS issues. 
• Installed, configured CISCO routers & switches and the Cisco IOS& heartbeats for Oracle RAC. 
• Extensively worked with the LAN/WAN, firewalls and routing for Internet and Intranet connectivity using different protocols like TCP/IP, UDP, DHCP , HTTP/s, FTP, SMTP, SOAP & SSH. 
• Wrote UNIX Shell, K-shell, Perl, bash and python scripts to perform admin tasks.
• Extensively worked with Remedy ticketing system and provided 24/7 on call support for production. 

Environment: Linux 5/4, Sun Solaris 10/9/, Oracle 10g, SUN Servers, SUN Fires, Linux, HP open view service desk (OVSD), Kickstart, Jump Start, Fujitsu Prime power servers, Samba, AutoSys, VERITAS Volume Manager (VVM), LDAP, EMC Storage SAN, VERITAS Cluster Server (VCS), VxVM, VMware servers, WebLogic, Jboss and Apache.

Linux Systems Administrator

Responsibilities: 

• Installing RedHat Linux using kickstart and applying patches on the servers based on the company policies. 
• Creating Linux Virtual machines, templates using Vmware virtual client 3.5 and migrating servers between ESX hosts. 
• Managing systems routine backup, scheduling jobs, enabling cron jobs, enabling system logging and network logging of servers for maintanance. 
• RPM and YUM package installations, patch and other server management.
• Creating physical volumes, volume groups and logical volume. 
• Installation and configuration of VMware ESXI 5.0 
• Experience in Creating and managing user and group accounts, security, rights, disk space and process monitoring in Solaris and RedHat Linux. 
• Installing and configuring Apache and supporting them on Linux production servers.
• Troubleshooting the network issues and response problems. 
• Installation and configuration of Logical volume manager-LVM and Netbackup.
• Experience with Nagios Network management and System monitoring tool. 
• Documentation of all the setup procedures and System related Policies (SOP's). 
• Experience in configuring DNS, NFS, NTP, ftp on Linux servers. 
• Experience in installing firmware upgrades, kernel patches, systems configuration, performance tunning on Linux/Centos systems. 
• Creating Linux virtual Machines using Vmware virtual centre, Vsphere client. 
• Team player with good management, analytical, communication and interpersonal skills. 
• Providing 24/7 technical support to Production and development environments. 

Environment:RHEL Linux 5.x, AIX, OEL, SAN, NAS, VERITAS Volume Manager, VCS, VERITAS Netbackup, VMware ESX, SAN, NFS, Shell Scripting.