SUMMARY

• 7+ years of experience as Linux administrator on Red hat EL 4.x, 5.x, 6.x Debian, CentOS4.x,5.x, Suse 9 & 10, Oracle Enterprise Linux 5 & 6 Solaris 8,9, 10 and VMware vSphere ESX/ESXi 4.x 5.x environment.
• Hands on Experience in RedHat Enterprise Linux and Kickstart - PXE installation.
• Extensive experience with Virtualization technologies like installing, configuring, administering VMware ESX/ESXi. Created and managed VMs (virtual server) and also involved in the maintenance of the virtual server.
• Experience in Creation and managing user accounts, security, rights, disk space and process monitoring on Redhat Linux.
• Extensive understanding of networking concepts, (IE. Configuration of networks, router configuration and wireless security, TCP/IP, VPN, Content Filtering, VLANs, and routing in LAN/WAN, Ethernet Port and wireless networks).
• Experience with all kinds of MS Office like Excel, Outlook, and PowerPoint.
• Managed Patches, Upgrades and Licensed Products for System software on allLinuxServers.
• Experienced in installation, configuration, design and ongoing maintenance of Cisco router and switches.
• Experience with x86/x64Intel, HP, IBM & Dell hardware like rack-mounted servers, tower servers, desktop, laptop and other peripherals.
• Experience in monitoring the availability & performance ofLINUXservers.
• Experience in installing, configuring and implementing the RAID technologies.
• Experience in iSCSI, NFS storage and RAID concept.
• Involved in upgrading production (Linux and Solaris), development & QA servers
• Experienced in supporting database system, exadata & oracle RAC on Red Hat Linux.
• Experienced and good working with data automation process.
• Experiences in FTP, DHCP, SAMBA, users setup/troubleshooting.
• Experience managing various file system using LVM configured file system through network using NFS, NAS methodologies and installed RAID devices.
• Experience in Server monitoring, application monitoring with the help of HP insight, Nagios, Zabbix.
• Experienced in creating, mounting file systems and recovering file system errors.
• Experienced in scheduling different types of system tasks as per requirement.
• Good knowledge of installation and update of drivers for HBAs to provide connection between servers & clients.
• Experience in managing logical volume manager in Redhat Linux.
• Responsible for Backup and Recovery operations of various servers using VERITAS Net Backup.
• Advance Scripting skills in Bash Shell.
• Working Knowledge on using and developing Perl and python scripts used to automate day to day administrative tasks.
• Experience with Cloud servers, LAMP and J2EE applications.
• Installation and configuration of Web Application servers like Apache, Tomcat and Weblogic.
• Experience in Microsoft Office Suite, Open Office, Visio, Outlook, Printing, Windows networking, Security patching
• Experience supporting 24x7 production computing environments. Experience providing on-call and weekend support.

TECHNICAL SKILLS

Operating Systems: Linux(Red Hat 4.x, 5.x, 6.x, SUSE 9,10,11, Unix-Sun Solaris 8,9,10,11 VMware ESX 3.5,4.0, Ubuntu 10.04/12.04 , AIX 5.x, 6.x, 7.xProgramming Languages C, C++, Unix Shell scripting, Perl and Ruby scripting, HTML, PL/SQL

Networking Environment: NFS, AutoFS, NIS, DNS, DHCP, Cisco Routers/Switches, WAN, SMTP, LAN, FTP/TFTP

Disk Management: Logical Volume Manager, Veritas Volume Manager 4x, 5.x, 6.x, Solaris Volume Manager

Databases: MySQL, Oracle 10g/11g, MS SQL

Monitoring Tools: Nagios, Tivoli, SNMP, Splunk, Xymon

Build Tools: Hudson/Jenkins, Team City, Sonar, Maven, ANT and NANT

Open source/Cloud: Chef, Puppet, GIT, Docker, AWS, IAM, EC2, S3, Route 53, VPC, Cloud Front, ELB, EBSWeb/Application Servers JBoss4.x, 5.x, Web Logic 8.x, 9.0, 10, WebSphere 5.x, 6.x, Apache Server 1.3.x, 2.2.x, Apache Tomcat 5.x, 6.x, 7.x

PROFESSIONAL EPERIENCE

Confidential, Denver, CO

Sr. Linux Administrator

Responsibilities:

• Installation, configuration, administration of RHEL 5, 6, 7 and Solaris 9, 10 using Kickstart, Jumpstart, custom configuration like package management, volume management of servers.
• Applied appropriate support packages/patches to maintain system integrity.
• Configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager (LVM) commands.
• Creating, installing and configuring Zones, LDOMs in Sun Solaris 10.
• Creating virtual machines, cloning, creating templates, adding storage, installing Redhat, performing vmotion, adding ESX hosts on Vsphere 4.0.
• Creating file system, exporting, importing file systems, tuning, growing, shrinking using Veritas File system 5.x.
• Implemented automation tools such as Spelunk, Puppet, Chef, Docker, Ansible, Team City, Jenkins and Devops.
• Experience with RHEL 7, Puppet, Docker, and Chef Configuration management tool.
• Troubleshooting and administering High Availability using VERITAS Cluster Server (VCS) and Redhat Cluster Server (RHCS) on various business critical database & application production servers.
• Monitored Linux server for CPU Utilization, Memory Utilization, and Disk Utilization for performance monitoring.
• Installing and configuring NPIV and VSCSI
• Installing and configuring Zabbix and tracking status of network and servers
• Managing and configuring large group of servers using Openstack
• Troubleshooting and configuring NAS and NFS mount points.
• Performed capacity analysis, monitored and controlled disk space usage on systems.
• Monitored system activities and fine-tuned system parameters and configurations to optimize performance and ensure security of systems.
• Adding Oracle ASM disk to the server. Creating managing volumes using LVM.
• Administration for multiple sun hardware, this involves creating domains, adding/deleting system components.
• Installing, configuring Veritas Netbackup 6.5 on Solaris, Redhat servers, creating polices, scheduling jobs.
• Installed Web Logic 10.3 and configured Domains, Admin and managed servers for Applications to be deployed.
• Providing Secure Global Infrastructure using AWS
• Building and configuring ProLiant DL360 gen9 servers
• Basic scripting skills with experience in Bash, Python, and Ruby
• Extensively used Active Directory Server Console for managing the entries.
• Installing, configuring Puppet, Docker and Chef on linux, unix clients, creating new profiles, running checks, modifying scripts, pushing changes to the clients.
• Involved installing and managing different automation and monitoring tools on Red hat Linux like Nagios, bash and python scripts.
• Setting up LAMP server and updating the LAMP stack
• Configuring and troubleshooting EXT3, OCFS, NTFS file systems
• Monitoring system resources, logs, disk usage, scheduling backups and restore.
• Configuring SUDO and granting root permission to users for performing certain activities.
• Extensively worked on hard disk mirroring and stripe with parity using RAID controllers.
• Involved in Server sizing and identifying, recommending optimal server hardware based on user requirements.
• Worked on PCI and SOX audit requirements
• Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.
• Adding servers to the domain and monitoring them using spectrum, Sitescope, cacti.

Environment: RHEL, Red-Hat Linux Enterprise servers (HP Proliant DL 585, BL 465/485,ML Series), Solaris, AIX, SAN (Netapp), Openstack, Blade Logic, Veritas Cluster Server, Nagios, Redhat Cluster Server (RHCS), Python, Chef, Puppet, Docker, Ansible, Jenkins, Zabbix, PHP, AWS, Windows 2003 server, NPIV, VSCSI, Shell programming, Jboss, JDK,, VMware Virtual Client, VMware Infrastructure.

Confidential, NC

Linux/UnixAdministrator

Responsibilities:

• Building Physical servers and Virtual Machines. Creation of VMs using RHEL gold Image, cloning and migrations of the VMs on VMware vSphere 6 .0.
• Extensively Working with Red hat Satellite 5.6. Creating and cloning virtual machines in VMware environment using Virtual Infrastructure client 5.5 and 6.0.
• Installation and configuration of DHCP Client/Server. Configuration and automating using the automating tool Ansible 2.1.1
• Setting up user/group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Patch Management, patching the servers. Package Installation/upgrades and Kernel upgrades.
• Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
• Installing, configuring Veritas Netbackup 6.5 on Solaris, Redhat servers, creating polices, scheduling jobs.
• Creating logical volumes, extending the filesystems using LVM.Configuration and Administration of Load balancers and F5's, taking servers in/out of rotation.
• Worked with OVF "Open Virtual Machine Format" supported tools VirtualBox, RedHat Virtualization (XEN), and VMware Workstation.
• Installation, configuration and deployment of OS on QA, Dev, Contingency and Prod environment.
• Building ofLinux/Solaris OS servers using Kickstart /jumpstart automation application.
• Well experienced with Network File System (NFS) for storage. Using CyberArk and PASS for password storage for security.
• Performing Post Build activities like Setting up Backup interface/ NIC bonding/ Loading additional Packages/ joining the server to Active Directory, etc.
• Technical and troubleshooting skills with relational databases (Postgres, Mysql). Installation, configuration, support and security implementation on following services: DHCP, SSH, SCP.
• Configuration and administration of LDAP, NFS and NIS inLinuxand also implemented Samba for sharing of resources betweenLinuxand Windows environments.
• Using IDM(Identity Data Management) tool as Active Directory. Installed and Configured Tomcat and Jboss for Web Application deployment.
• Worked with DBA team for database performance issues, network related issue onLinux/Unix Servers and with vendors for hardware related issues.
• Decommissioning of the old servers and keeping track of decommissioned and new servers using inventory list. Solving issues/Problems or requirements as per the ticket (Request Tracker) created.
• Using HP Service Manager as ticketing tool. Set the cron jobs on the servers. Hands on IBM Security Manager to provide access on the server.
• Using Service Request Catalogue to request firewall, device etc.
• Using mainly Bash scripting. Participated in on-call rotation to provide 24X7 technical supports.
• Maintaining proper Documentation of all the activities carried out during the project. Environment: Red Hat EnterpriseLinux4.x, 5.x, 6.x,7.x Sun Solaris 8, 9, 10, VERITAS Volume Manager, Oracle 11g, Samba, Oracle RAC/ASM, EMC Power path, IBM WebSphere Application server, DELL PowerEdge 6650, HP Proliant DL 385, 585, 580, Super micro E5-2600, Sun Fire v440, SUN BLADE X6250, X6270, Tomcat, Apache.Capital One, Richmond, VA Mar 2014 - Apr 2015Linux/Unix AdministratorCapital One Financial Corporationis abank holding company specializing incredit cards, home loans, auto loans, banking andsavings products headquartered inMcLean, Virginia . Capital One is the eighth-largest commercial bank in theUnited States when ranked by assets and deposits and is ranked 9th on thelist of largest banks in the United States by total assets. The bank has 755 branchesincluding 18 café style locationsResponsibilities:
• Installed, maintained and upgraded Red hat Linux and Solaris Servers using kick-start based network installation.
• Configured and administered multiple production Red hat 4/5/6 servers across multiple platforms.
• Worked on various Unix/Linux clusters such as Oracle RAC, SAP service guard S2S and Local, Service guard CFS S2S and Local, Linux VCS HA Cluster S2S.
• Perl development to interact with LDAP (AD) servers to query & modify person, host & net group data.
• Installation, setup, configuration, security administration and maintenance for flavors of servers.
• Worked closely with SAN team, allocated storage to the server and shared with its cluster nodes.
• Most of these tasks are performed using native Korn Shell and Perl scripts system resources from one partition to another partition.
• Building, Installing, Configuring servers from scratch with OS of RedHat Linux.
• Performed Red Hat Linux Kickstart installations on RedHat 4.x/5.x, performed Red Hat Linux Kernel Tuning, memory upgrades.
• Preparation and execution of server patching and upgrade on more than 500 servers including HPUX, AIX, Solaris and Red Hat Linux servers.
• Configured the yum repositories for installing and updating the packages on the Red Hat Linux.
• Experienced in configuring and maintaining System Securities using IPTABLES.
• Experienced in networking with LAN, WAN, Routers, Gateways, etc.
• Working on Volume management, Disk Management, software RAID solutions using VERITAS Volume manager. File system Tuning and growing using VERITAS File System (VxFS).
• Configured, maintained, applied changes and fail-over schedules of HA servers running Veritas Cluster Server and Red Hat Cluster Server.
• Coded various Perl/Shell scripts to automate backup and recovery.
• Expert in setting up SSH, SCP, SFTP connectivity between Linux hosts. Experienced in DNS, NIS, NFS, CIFS, FTP, NIS, Samba Server, LDAP, remote access, security management, and system troubleshooting skills.
• UNIX Shell/Perl scripting for job automation. Creating zones for application.
• Created ZFS file system in Solaris 10 using Zpool and ZFS and created Veritas file systems 5.0, RAID 0, 1, 5 volumes.
• Installed application connectivity software to enable IBM print services. Configured and administered firewall rules, including the use of SNORT, NMAP to effectively monitor system files, port security, and network traffic activity coming through the firewall.
• Implemented Oracle RAC high availability application cluster on RHEL 4.5.

Environment: Linux instances, AIX Servers, HP-DL380 G6/G8 and DELL R710/720 and 920, p8/p7 Series, IBM-Blade Centre (Chassis Blades HS23, HS-22 & Racks), HMC V7R7.7.0, ILO, KVM, RHEL 6/5, VMware-Vsphere.

Confidential, Piscataway, NJ

LINUX Administrator

Responsibilities:

• Design, implement, and maintain large-scale environment of Unix/ Linux servers, backup systems, and the associated software and hardware to ensure maximum performance, efficiency, scalability, and availability.
• Configure UNIX/ Linux environments with NIS/NIS+ configuration and maintain
• Install and maintain Version controlling (Clear Case Multi site) server for development environment
• Involved with J2EE environment setup. Install, configure, tuning, and support Weblogic, JBoss, Tomcat and Apache servers for test and production environment
• Installation and configuration of RedHat Enterprise Linux environment:
• Install Redhat provided third party package according to the service requirement
• Write kickstart profile according to service requirement and install OS with kickstart with support of nfs and web server
• Implement Software label raid configuration (LMV)
• Configure local file system for the system according to service requirements.
• Configure single/multiple network interface for network connectivity configure network file system for service requirements
• Install and update software/applications with yum utilities
• Implement local/remote user authentication service (nis, LDAP) Implement name regulation service for the system (DNS)
• Implement system security trough linux and iptable.
• Installation and configuration of Sun Solaris environment:
• Regular OS Installation
• Use Jump start for OS installation with support of Jump Start server
• Configure local file system according to service requirements
• Configure single/multiple network interface for network connectivity
• Configure network file system for service requirements
• Configure large file system with Solaris ZFS
• Configure and maintain remote user authentication service (nis, nis+, LDAP)
• Configure the global zone
• Prepare file system and zone root path for non-global zone
• Identify IP address and hostname for non-global zone
• Use zonecfg command to create non-global zone and set IP address and other environment for non-global zones.
• Use zooned command to install and maintain all non-global zones.
• Configure and maintain Solaris environment with SMC.
• Administer tools for Repository creation and maintenance of accounts using tool upgrades and end user support for SVN.
• Mirroredlocal repository from build using GIT.
• Configure and implement OS level virtualization with Solaris Zoning and VMware

Environment: RHEL 4.x/5.x/6.x, Solaris 9,10&11, HPUX, Centos, SUSE 10, 11, VERITAS Volume Manager 3.x/ 4.x, VERITAS Storage Foundation 5, Redhat Cluster, VERITAS Cluster Server 4.1, Tripwire, NFS, DNS, SAN/NAS.

Confidential

UNIX Administrator

Responsibilities:

• Installed RHEL 3.0/4.0 using kickstart and custom building the servers.
• Installed/configured EMC Storage with 0, 1& 5 RAID configurations.
• Installed and maintained Security issues.
• Installed Veritas Volume Manager, VCS Cluster Server for fail-over and for mirroring and raid level configurations on EMC storage frames.
• Performed all System Administration tasks like cron jobs, installing packages, and patches.
• Configured Mail relaying, virtual host, POP3 and IMAP4 services and enforced security policies.
• Configured and installed Automount and Jumpstart.
• Diagnosing hardware/software problems and provide solutions.
• Configured and maintained Samba Server, NFS Server, NIS Server and clients, DNS clients and Auto Fs File systems.
• Troubleshooting system, network and user issues.
• Performing tape backups, archiving and checking data integrity through Shell Scripts and job automation.
• Supported back office systems environments.
• Testing and upgrading production, development and testLinuxand Solaris servers.
• Creation & Maintenance of user accounts & passwords & profiles, home directories, initialization of files, groups’ creation and management, setting file permissions, customizing shell environment setup for users.
• Additional responsibilities include schedule and administration of server backups, setup and administration of network and ms mail accounts.
• Troubleshooting various problems related to VxVM in initializing, replacing, mirroring, encapsulating and removing disk devices on various Production Boxes.
• Maintaining production critical servers running Solaris UNIX,Linuxsupporting Oracle database and Web services. Providing 24x7 supports.
• Worked efficiently using Veritas NetBackup on development and production servers for backups and restores.
• Created LVMs onLinuxservers.
• Writing Shell Scripts for managing day-to-day transactions & for automation of routine tasks.