SUMMARY

• Having 8 years of IT experience in System administration in the areas of various flavors of LINUX(RedHat, SuSE,CentOS,Ubuntuand Solaris) andUNIXServers including Windows 2003/2008/2012 and VMware Systems Administration.
• Installing, upgrading and configuring RedHat Linux4.x,5.x,6.x and 7 using Kickstart Servers and Interactive Installation
• Extensive experience in RedHat Satellite Administration.
• Proficiency in VMware. Installation and monitoring Virtual environments with ESX 4.x Servers and Virtual Center.
• Experience in Configuring & Administering SAN Devices and other storage solutions like VERITAS DMP.
• Experience in Logical Volume Manager for creation of Volume groups / Logical Volumes and File systems in UNIX environment.
• Data center administration involving Assembling, Racking and Cabling, Disk installation, adding Network and powering Servers and Tape Libraries.
• Hands on Experience inRedHat Enterprise Linuxand Kickstart - PXEinstallation.
• Excellent introubleshooting and MaintainingAIXand Patching.
• Extensive administration of EMC SAN involving BROCADE,CISCO MDS, 3par Array, XtremIO, HP MSA, EMC VNX, NETAPP and VPLEX.
• Solely Responsible for Building the LPARS, Allocating storage NETAPP and BROCADE and OS AIX 5.3 and 6.1 installation through NIM.
• Supported installation ofOracle database(RAC) onLinuxservers associated with DBAs.
• Experience with configuring firewalls using Linux. Familiar with configuring advanced features such as NAT, port redirection, and logging.
• Supported WebSphere Application Server, IBM HTTP/ Apache Web Servers in Linux/ AIX environment for various projects.
• Expertise in Planning, Installation, Configuration and Maintenance of IBM HACMP V4.5 and V5.1.
• Trouble shooting and analyzing network related issues using Wireshark.
• Extensive experience on HP Server Automation (HPSA).
• Installation & Configurations of Red Hat Linux & Fedora Linux, Maintenance & System Administration, webserver 6.1, NetBackup 5.0/6.x, Apache, Tomcat, Send mail
• Automation of OS builds and Application Installation through Puppet & Chef and deployed Docker Engines in virtualized platforms for containerization of multiple apps.
• Experienced installing, upgrading and configuring Red Hat Servers using Kickstart and Solaris Server using Jumpstart and customizing the Kickstart profiles and Jumpstart scripts to automate the installation of various servers. Experience in Installing, upgrading and configuring RedHat Linux 4.x, 5.x, 6.x, 7using Kickstart Servers and Interactive Installation.
• Building servers and configuring Ethernet settings of both IPv4 and V6.
• System backup and disaster recovery applications including VERITAS Cluster Server (VCS) and VERITAS NetBackup.
• Experience in EMC storage environments with VMAX 20k/40k/200K, Vplex, XtremIO, DMX3/4, VNX/VNX2 Unified, CLARiiON CX3/CX4, Isilon and management tools like Unisphere, Unisphere Central, OneFS Storage Administration, Navisphere, VNX MNR, Symcli, ECC and SMC.
• Controlling Network packet traffic using packet analyzer such as tcp/ipdump.
• Experience in Shell scripting (korn) to automate system administration jobs as per the customer request and applying the changes after creating a change control and getting the approval according to customer requirements.
• Experienced in DNS, NIS, NFS, FTP, sendmail, remote access, security management, and system troubleshooting skills.
• Proficient in SMIT Administration. Installation, Maintenance of RS/6000 systems, disk drives.
• Good noledge of Chef, Puppet, Perl, Python, Bash, Apache, Tomcat, Netapp, Big Data, AWS, HTML, LDAP, SQL, EMC VNX, DNS.

TECHNICAL SKILLS

Operation Systems: RHEL 5.x/6.x/7.x, SUSE Linux Enterprise Server 9, Ubuntu 6.x/7.x, Solaris11/10/9/8, CentOS, Windows 2003, 2008, 2012, IBM AIX (5.x, 6.x),VMware 4, 5 ESXi / vSphere & Configuring DRS, HA, P2V.

Hardware: IBM p520, p550, p560, p570, p575, IBM P670, IBM, P650, IBM RS/, JS20 IBM Blade server, HMC, Brocade FC Switches, Net App Filers, Qlogic and Emulex FC HBAs, Brocade silk worm 3200, Cisco MDS.

Application Server and Technologies: NIM, Apache, HACMP clustering, DNS, NIS, NFS, WebSphere Application Server 6.x/5.x, WebSphere Portal server, Windows 2000/2003 Active Directory, Microsoft IIS Server4/5, SSL, Distribution Server.

Databases/scripting: MSSQL 2000, DB2, Oracle, shell scripting

Storage Technologies: IBM SAN, AIX Logical Volume Manager, Cisco Router, Cisco Catalyst Switch, NetApp NAS,SAN, EMC Clarion, VNX, HDS, EMC Power path, Snap Mirror, VERITAS NetBackup, VERITAS DMP, Oracle ZFS 7400

Backup/Monitoring Tools: TSM v5.3, v5.4, cpio, tar, mksysb, SMIT, WSM, SAR, topas, Tcpdump, Windows NetBackup/restore, Avamar.

UNIX Services & Tools: DNS, DHCP, NTP, HTTP, LDAP, SSH, SSL, SFTP, GREP, SCP, AWK

Programming Languages: C, Perl, Shell, Python, SQL, xml, html

Configuration Management: Chef, Puppet,Vagrantand Ansible

Continuous Integration: Git, Jenkins, Maven and Hudson

Project management: JIRA and Confluence

Build Tools: JIRA and Confluence

PROFESSIONAL EXPERIENCE

Confidential, Orrville, OH

Linux/VMware Administrator

Responsibilities:

• Handling very large environment with day to day activities.
• All facets of system administration of RedHat Linux (version 5+) and HP-UX (11.31, 11.11).
• Data center activities involving Assembling, Racking, cabling, adding Network and powering Servers and Tape Libraries.
• Complete Avamar Administration (version 7.2.1 and 7.1.2) for restoring backup using NetApp.
• Renewing SSL Certificates and other licenses for the critical environment.
• Administration and support of Unix Servers including SUSE, Red Hat Linux and CentOS.
• Experience in installation, configuration, upgrading and troubleshooting of VMware ESXI and V Center server
• Experience in configuring and troubleshooting v sphere Networking (VSS and VDS policies).
• Installation and Administration of RedHat & SUSE Linux on x86 Enterprise Servers for test lab, production and disaster recovery setup.
• Installation, configuration and testing of Double-Take Share for Data Transfer for Solaris Servers.
• Implementation of VMware Infrastructure for Windows, SLES 11 & Linux Red hat 5.0 with VMware ESX 3.5, Virtual Center 2.5 and administered the VMs with VI client.
• Experience in managing HP and IBM Blade centers and deploying VMware environment. Managed a total of 25 baldes including 10 x C7000 and 15 IBM H series blade centers.
• Extensive experience in installing, integrating, tuning and troubleshooting Apache, Tomcat and Web Sphere application server and Web sphere IHS including troubleshooting.
• Used Logical Volume Manager for the management of Volumes including creation of physical and logical volumes on Linux
• Worked on User administration setup, maintaining account, Monitor system performance.
• Implemented and administered VMware ESX 3.5, 4.x for running the Windows 2003/2008 Servers on development and test servers.
• Install and configure SSH to enable secure access to the servers.
• Experience in configuring and troubleshooting v sphere storage (VMFS and NFS data stores).
• Experience in creating, deploying and administrating virtual machines and v Apps, Managing VM clones and templates
• Created and configured VMware Clusters, implemented VMware Fault Tolerance, created and administered Resource pools.
• Using VMware V Center server to monitor, manage, troubleshoot and administer virtual machines and Esxi hosts.
• Knowledge of networking concepts (DNS, TCP/IP, HTTP, SSH, OSI layers, Client/Server architecture and Firewalls).
• Proficient working with TCP/IP, DNS, DHCP, NFS version 2/3/4), NIS, NIS+, SAMBA, LDAP, SSH, SSL, SFTP, SMTP, SNMP, SAN, NAS.
• EMC data domain system manager maintenance involving NFS load balancing.
• Decommission of boxes and converting old physical servers to latest ESX virtual servers.
• Disaster Recovery activities and extracting Disk iso for critical production environment.
• Creating Linux Virtual machines, templates using VMware virtual client and migrating servers between ESX hosts.
• Package management and maintenance of severalLinux servers on virtual environment.
• Providing 24*7 on call support.
• Thorough experience on Satellite server and installations of RedHat Linux on Dell and HP physical boxes.
• Adding external disk spaces via SAN on Linux systems and managing other storage related activities.
• Configuring and maintaining network services such as LDAP, DNS, NIS, NFS, Web, Mail and FTP.
• Managing DNS for external and internal domain & Send mail Relay Server for outgoing mails.

Environment: RedHat Enterprise Linux 4.x/5.x/6.1, Solaris 8/ 9/10, Tivoli Storage Manager, VMware ESX5, Tivoli Net backup, WebSphere, Windows 2008 R2 & 2008 servers, Windows 2003, IIS 7.0 & 7.5, HPC7000 & C6000.

Confidential, Memphis, TN

Linux/VMware Administrator

Responsibilities:

• Experience working with HP HW like C7000 & C6000 and Installed VMware ESX for Linux and Windows VM’s.
• Managed multipath devices on Linux and Solaris servers using EMC power path and Linux native multipathing.
• Troubleshooting network administration, IIS configuration, DNS setup and modifications, firewall rule sets, local
• Managing multiple Confidential environments which include Ground, Freight, UTE and Line Haul etc.
• Extensive work on automation using HP Server Automation (HPSA).
• Installed, upgraded, patched and configured Linux servers using Jumpstart and RedHat Enterprise Linux 5/6 using Kickstart.
• Configured, maintained, applied changes and fail-over schedules of HA servers running VERITAS Cluster Server and RedHat Cluster Server.
• Experience in establishing NIC bonding/ teaming, IP aliasing.
• Duties included Installation, configuration, administration, troubleshooting and maintenance of VMware virtual infrastructure platforms
• Managed VMware infrastructure with Virtual Center Server and migration of virtual machines to ESXi 5.5
• Worked on Implementing, upgrading and maintaining the Cisco UCS domains, Vcloud.
• Created and maintained VMware host clusters for High Availability (HA), Distributed Resource Scheduling (DRS) and Distributed Power Management (DPM).
• Installed, monitored and supported Web servers and Application Servers on Solaris and Linux environments.
• Administer the Network issues and Resolving Operating Systems related issues of AIX, Linux and making sure that the users get the proper environment for testing.
• Fine tuning of Operating System and performance analysis, uptime and response time and SLA. Performed UNIX System Administration. Fine-tuning, Kernel debugging, process scheduling, disk and file system
• Automating the installs using Jumpstart and Kickstart and building post install scripts using Shell scripting in SUN Solaris and RHEL Servers.
• Designed, implemented and Administer a completely redundant, secure and highly complex SAN Solution for production, development and test environments spanning multiple Brocade, Cisco MDS 9500 and 9100 switches, NetApp NAS devices, SAN Storage (XIV, DS*K, Hitachi) supporting 2,000+ Bare metal Linux (RHEL / CentOS, Ubuntu), IBM AIX, Power Linux, Oracle Solaris, HP-UX, and around 8000+ VMware ESXi 5.x images in a completely virtualized environment.
• Package management and maintenance of severalLinux servers on virtual environment.
• Providing 24*7 on call support.
• Managed, Blackberry, Citrix, Xenapps servers, IronPort anti-spam servers, Symantec anti-virus servers and Windows ISA servers on a Windows 2003/2008 platforms. Maintain internal VPN, user accounts, security and troubleshoot performance issues. Configured and manage VMware, HP Blade, Proliant servers, HP MSA storage units, Dell Power Edge server and Dell storage units.
• Worked on most of the Storage products like HP MSA, EVA, XP Storage works, EMC Celerra, Clariion & Symmetrix, Dell Equal logic PS series&MD3000i
• Performing daily system monitoring, verifying the integrity and availability of all server resources, systems and key processes, reviewing system and application logs, and verifying completion of scheduled jobs such as backups and cron.

Environment: Red-Hat Linux Enterprise servers (HP ProLiant DL 585, BL 465/485,ML Series All IBM X-series), CentOS, Ubuntu, Solaris 8,9,10, (Sun T2000,V490, V890,M5000etc..),AIX 5.3, 6.1,(All IBM P-series) SAN(Netapp), Blade Logic, VERITAS Cluster Server 5.0, Windows 2003 server, Shell programming, Jboss 4.2, JDK 1.5,1.6,, VMware Virtual Client 5.5, VMware Infrastructure 5 and 6.

Confidential, Boston, MA

Linux Administrator

Responsibilities:

• Performing daily system monitoring, verifying the integrity and availability of all hardware, server resources, systems and key processes, reviewing system and application logs, and verifying completion of scheduled jobs such as backups.
• Perform daily backup operations, ensuring all required file systems and system data are successfully backed up to the appropriate media, recovery tapes or disks are created, and media is recycled and sent off site as necessary.
• Building physical and virtual Linux servers from scratch and configuring and installations on the servers.
• Thorough maintenance of Ubuntu, CentOS, Fedora & Linux Machines.
• Utilize and maintain comprehensive documentation as it relates to server, equipment, and application configuration.
• Data Center Migration support forCX, DMX attached hosts.
• Network installation via cobbler Kickstart server and centralized yum server for client package update.
• Managing DNS for external and internal domain & Send mail Relay Server for outgoing mails.
• Virtualization in KVM and ESX and migration of servers from KVM to ESX.
• Managing VMware ESX 3.0 and two GSX servers for development and website migration.
• Perform systems upgrades and patching.
• Trouble shooting and analyzing network related issues using Wireshark.
• Network file mounts in between Linux and Windows machines using Samba.
• Applying BPF based filter to limit the packets seen by tcp dump to regulate traffic.
• Create, change, and delete user accounts per request.
• Configured Network switch to connect multiple devices to process data in network.
• Providing 24*7 on call support.
• Assembling hardware components on both Linux/Windows machines.
• Configured SAN for ESX servers and setup for new physical servers.
• Resolving tickets and maintenance activities through change requests.
• Repair and recover from hardware or software failures including both Windows/Linux machines. Coordinate and communicate with impacted constituencies.
• Assist Client Services Representatives (CSRs) in troubleshooting users’ problems in connecting to and using servers

Environment: CentOS, RedHat Linux 7,Ubuntu,LVM .HP Quality Center, VMware ESX,KVM, VSphere. Apache, SAN, Samba, Nagios.

Confidential, Boston, MA

Linux Administrator

Responsibilities:

• Administration and support of Unix Servers including SUSE, Red Hat Linux and CentOS.
• Creation of VMs for SUSE, Solaris x86 and RedHat Linux on VMware ESX 3.5 and administering them with VI Client.
• Performed volume management using SVM and LVM and the creation of zfs, VxFS, UFS and ext3 file systems.
• Installation and support of various applications including WebLogic 10, Jboss 4.2.x, Oracle 10g, Sun Java System Web Server 7, Tomcat, JDK 1.5, Ant.
• Patch management using native commands on Linux and following the chance control procedures.
• Performance tuning and troubleshooting of the applications and resolution of issues arising out of the ticketing systems in Remedy.
• Monitoring the servers using tools like BMC and Nagios and providing 24x7 supports on call rotation basis.
• Modified the Linux Kernel (2.4) to control the swappiness.
• Decommission of the servers/service groups which include: removal of DNS, take full ad-hoc backup of file systems, removal
• Worked on Remedy project and resolved Remedy tickets as assigned to the individual or team
• Participated in projects as directed including planning and the implementation of new applications and projects infrastructure.
• Involved in migration of project from one flavor to another one.
• Experience in Shell scripting (KSH, bash) to automate system administration jobs
• Configuring RedHat and CentOS machines.
• Adding Kickstart files and installing latest packages to servers from Satellite.
• Network installation via cobbler Kickstart server and centralized yum server for client package update
• Resolving tickets and maintenance activities through change requests.
• Installing and configurations on RHEL and CentOS.
• ConfiguringNFS, NIS, NIS+, DNS, Auto Mount & Disk Space ManagementonSUN Servers
• Integrating windows machines with Linux machines using Samba.
• Controlling high network traffic using TCP/IP dump.
• Integrating systems using satellite and puppet.
• Configuring and maintaining network services such as LDAP, DNS, NIS, NFS, Web, Mail, FTP

Environment: RedHat Linux4x to 7x series, CentOS, LVM .HP Quality Center, VMware VSphere, .

Confidential, Cranston, RI

Linux/AIX Administrator

Responsibilities:

• Building physical and virtual Linux servers from scratch and configuring and installations on the servers.
• Thorough experience on Satellite server and installations of Redhat Linux on Dell and HP physical boxes.
• Installed and maintained severalLinux servers on virtual environment.
• Created mount points for Server directories, and mounted these directories on the Servers.
• Diagnosed and troubleshoot software and hardware related problems.
• Implemented & installedRedHat AS 5.0/6.0operating Systems onLPARusingHMC. Good noledge of installing UNIX based operating systems on LPAR.
• User Administration, management and archiving.
• ConfiguringNFS, NIS, NIS+, DNS, Auto Mount & Disk Space ManagementonSUN Servers.
• Experience in Configuring and ManagingVirtual Disks, Disk Mirrors&RAIDLevels.
• Data Center Migration support forCX, DMX attached hosts.
• Network installation via cobbler kickstart server and centralized yum server for client package update.
• Adding external disk spaces via SAN on Linux and AIX systems.
• Managing DNS for external and internal domain & Send mail Relay Server for outgoing mails.
• Perform security patching of Linux servers and AIX servers.
• Organized couple of Disaster Recovery activities on TSA datastage application and OPrisk applications.
• Creating maintaining user profiles, security, and rights, Backups of data and Disaster Recovery.
• AIX system administration and management.
• User administering of the applications configured in Windows machines as well.
• Createdshellscripts and updated the scripts as per the requirement.
• Enterprise resource planning includedITIL processes, such asConfiguration Management, Change Management, Problem management and Incident Management.
• Controlling Networking traffic using packet analyzers such as TCP/IPdump.
• Installed and configured file and Application servers running on Sun servers
• Networking concepts which included configuring cabling and switch configuration.
• Configuring and maintaining network services such as LDAP, DNS, NIS, NFS, Web, Mail, FTP
• Providing 24*7 support and solutions to testing activates using HP Quality center.
• Experienced in engineering environments for AIX 5.3-7.1.
• Extensive use of blade logic servers to implement and automatic the scripts in case of file system alerts.

Environment: RedHat Linux4x to 7x series, ILO, IBM AIX different versions includes 7.1, VIO systems, LVM .HP Quality Center, Oracle Solaris, VCS, VMware VSphere, BMC .

Confidential, Tampa, FL

LINUX Administrator

Responsibilities:

• Installing and configuration of red hat Enterprise Linuxenvironment including RHEL 4,5 and 6 and OEL 5.5, AIX 5.2/5.3 and Suse Linux9 and 10
• Responsible for managing RedHat Linuxproduction and development environment servers
• Configure and manage EMC power path and Oracle RAC
• Managing VMware ESX 3.0 and two GSX servers for development, and around 24+ virtual machines.
• Handling Cacti and Nagios for Server, storage and SAN switches monitoring.
• Network installation via cobbler Kickstart server and centralized yum server for client package update.
• Managing DNS for external and internal domain & Send mail Relay Server for outgoing mails.
• Assisted Oracle DBA team with migration DB from AIX to LinuxRAC environment.
• Linux Oracle Enterprise server’s installation and advanced configuration (Oracle RAC) with IBM 5.x series hardware.
• Managing EMC & Pillar SAN storages.
• Samba & NFS file Server for sharing files on multiple clients which included windows platform as well.
• Little of configuration and administering of Windows machines.
• Implemented Spacewalk Open Source (RedHat Satellite Server) System management application for auto provisioning, software grouping, custom package channel, system inventory, auto deploying patches and monitoring of RedHat Servers.
• Implemented open source base monitoring tool Nagios 3.0 for servers, SAN switches, EMC SAN Storage and VMware ESX and ESXi.
• Administering our production and non-production Linuxservers.
• Creating TCP and UDP in client network systems using Iperf.
• Networking concepts which included configuring cabling and switch configuration.
• Supporting the interface needs of new development initiatives.

Environment: RedHat Linux4,5 and OEL-5.5and 6, Sun Solaris 9/10, Suse Linux9 and 10 AIX 5.3, SAN, Samba, NFS, VMware ESX and VM ware server, Apache, Tomcat and Jboss, Oracle Cluster, Web sphere servers, EMC Power path and SAN storage.

Confidential, COLUMBUS, OH

Linux/Unix Administrator

Responsibilities:

• Installation, Configuration & Upgradeof Linux (RHEL 5,6), Solaris 8.0, 9.0.
• Installation and configuration of Red Hat Enterprise Linux and Windows Virtual machines using PXE Boot, for the disaster recovery project.
• Configured Solaris Jumpstart Server. Maintained Server 6.0. Backup data of Servers usingVERITAS Net Backup. Maintained Security of the Solaris Servers.
• Configuration of VERITAS Cluster Server, Service Guard from the scratch and maintained service group/packages for failover and redundancy purpose.
• Installation and configuration of RHEL servers using Kickstart installation.
• Installation & configuration ofVMware ESX 3.5Servers,VMware Virtual Infrastructure Server,VMware License Server and VCB Setup.
• Enabling HA, DRS EVC, for the Clusters in theVCenter Server.Creating Host profiles and applying the host profiles to theESX hosts.
• Create Guest OS RedHat Enterprise Linux and make readymade Golden Image/Template using VMware Virtual Infrastructure Client.
• Configuring and maintaining network services such as LDAP, DNS, NIS, NFS, Web, Mail, FTP
• Implementation ofRAID 0/1/5for creation of logical volumes usingVERITAS Volume Managerin SAN Storage Area Environment.
• UsingKorn shell, Perl and CVS (Harvest), Hudson, Maven Version Control to automate deployment of J2EE applications to Mid-Tier platforms.
• Usedbash, awk,andsedto automate most of the daily activities like log monitoring, log rotation and purging, proactive systems monitoring including disk error detection.
• Managed Network troubleshooting applicationsTCP/IPincluding Ethernet, IP addressing & Sub netting, routing

Environment: Linux, Windows (NT/2000 Servers), HACMP, UNIX, Solaris, Tivoli SM, LPAR, VERITAS NetBackup, Scripting (korn).

Confidential 

Linux System Administrator

Responsibilities:

• InstalledRedHat LinuxEnterprise Server 5.3 and 5.4 on HP Servers using Kickstart at different Merck sites around the world inVMwareand Physical Servers.
• Installed and maintained severalLinux and Windows servers on virtual environment.
• Created mount points for Server directories, and mounted these directories on the Servers.
• Diagnosed and troubleshoot software and hardware related problems.
• Implemented & installedRedHat AS 4.0/3.0operating Systems onLPARusingHMC. Good noledge of installing UNIX based operating systems on LPAR.
• Installed and deployed operating system and security related patches and fixes.
• PerformingNIMInstallations of LPARs and DLPARS.
• Monitoringthe performance and throughout or load on a server, server farm, or property.
• Performance tuning of activities to ensure the most efficient use of existing infrastructure.
• Experience inHMCadministration, code update and taking HMC console backups.

Environment: Redhat Linux, Sun Solaris,Suse Linux, AIX,SAN, Samba, NFS, VMware ESX and VM ware server, Apache, Tomcat and Jboss, Oracle Cluster, Web sphere servers.