SUMMARY

• Proficient with Red Hat Enterprise Linux (RHEL) 4.x, 5.x, 6.x administration tasks; installation, upgrades with 7+ years of experience as UNIX/LINUX System Administrator /Engineer/ DevOps with expertise on various flavors of LINUX and UNIX like Red Hat Enterprise Linux, SUSE Linux, Fedora, Ubuntu, CentOS, and IBM - AIX.
• Planning, Installation, Configuration, Maintenance and Administration of AIX 4.3/5.1/5.2/5.3/6.1 and Linux (Red Hat 4, 5 & SUSE, UBUNTU) and day-to-day system admin tasks.
• Setting up printers / remote queues / Info-print management Migration upgrades of AIX (4.3.3/5.1/5.2/5.3/6.1 ), including system tuning, security, backup, recovery and upgrades of IBM AIX and Linux.
• Installation of patches, Security fixes, packages on AIX, Linux and Windows NT/2000 Servers.
• Worked on Group/User administration, Startup & Shutdown Scripts, Crontabs, File System Maintenance, Backup Scripts and Automation.
• Experience in working with VMware ESX servers for enterprise level virtualization and Xen.
• Expertise in configuring Kick start and Jumpstart Installation Methods.
• Hands on experience on installation and Configuration of Puppet.
• Extensively worked on Puppet for the automation.
• Worked on installation and configuration of Zabbix 2.2 and up gradation of Zabbix 2.2 to 2.4.
• Worked on load balancing using F5- BIGIP.
• Experience in using various transport, application and internet protocol layers like BGP, DHCP, DNS FTP, HTTP, IMAP, POP3, RPC, SMTP, SOAP, SSH, Telnet, TLS/SSL, TCP/IP, IP (IPv4, IPv6).
• Installed, configured and supported Web Sphere Application Server, IBM HTTP/ Apache Web Servers in AIX and Linux environments. Knowledge of Samba Servers.
• Worked extensively on creating volumes using different RAID levels using LVM in Linux
• Experience in creating and managing LPAR and DLPARs using HMC.
• Experience in using TPM emulator in Linux servers.
• Experience in configuring, monitoring and troubleshooting various file systems like Ext 3, Ext 2, UFS, NFS and JFS via monitoring tools like Nagios.
• Experience in installing, updating packages in Red Hat Linux servers using RPM’s and YUM repositories.
• Good working knowledge on HACMP 5.x and NIM Master and Clients.
• Use ILO/HMC for remote access of servers on Linux/AIX respectively.
• Worked extensively on Red Hat Linux DNS servers from installing BIND package, updating the BIND database and troubleshooting the problems.
• Having complete UNIX power user toolkit, expertise in using vi, sed, awk, perl and basic SQL.
• Experienced with the installation and configuration on Apache 2.x, 1.3.x, and 1.2, JBoss4.0.x Web Servers and, BEA Web Logic 8.x, 9.x servers.
• Good knowledge in Operating system level configuration of SAN using IBM Shark Storage, EMC and Hitachi technologies and also worked with NAS and HDS.
• Installation, Configuration and Administration of VERITAS Volume Manager (VxFS/VxVM/VCS).
• Have strong knowledge of ITIL processes for the administration of servers.
• Knowledge of networking (TCP/IP, Ethernet), FTP, SFTP, SUDO, NFS, NIS, DNS, DHCP and RAID levels.
• Expertise in Planning, Installation, Configuration and Maintenance of IBM HACMP V4.5 on AIX 5.1/5.2/5.3.
• Experience in Migration of HACMP 4.3.1/4.5 to HACMP 5.1 using Node-by-Node migration without changing the cluster setup.
• Experience in periodic checking of the open ports / services on the servers using tools like nmap and ISS.
• Launching and configuring AWS EC2 servers using AMI’s and configuring servers for specified applications.
• Administered shell interfaces, groups/user accounts, login scripts, and kernel patches & updates.
• Hands on experience in Red Hat Linux Performance Monitoring tools using vmstat, iostat, prstat, mpstat, sar& top.
• Good communication skills, working without supervision, working in team environment.
• Deploy puppet to completely provision and manageAWSEC2 instances, volumes, DNS, and S3.

TECHNICAL SKILLS

Server Administration: RHEL 4.x, 5.x, 6.x; Solaris 9/10/11; Expertise on Dev, Staging and Production environment under various OS, Application and Storage platforms; Shell Scripting Bash. Fedora, SUSE, Debian, Ubuntu, CentOS, IBM-AIX, Sun Solaris, and HP-UX, Windows -NT/ 2000/2003/2007 Server/XP Pro/Vista/7/8.

Cloud &SaaS Platforms: Amazon and Google Web Services.

Backup and Recovery tools: Dump, Restore, Tar, CPIO, Rsync, Kernel re-compilation & Patches update, Kick start, Installation; Firewalls IPTables; SELinux; ACLs, Tivoli Storage Manager, VERITAS Netback up, Storix.

File Transfer: FTP-Vsftpd; NFS & SAMBA; DNS-BIND, NTP, CUPS, SSH, Telnet, VNC,NIS& LDAP, SSL.

Hardware and Virtualization: DELL (Power Edge), HP (ProLiant G7 & G8), IBM Blade Center, Sun-Fire X-series and T- series Enterprise Servers, Dell Power Edge Servers and MD1000 Storage/RAID setup, Web, Application and Mail Servers Web logic 10.x/9.x/8.x, Web sphere, Apache HTTP/Tomcat Server Installation & Configuration; Compiling with Modules; Virtual Hosting; SSL, Load balancing& Clusters, VMware ESX and ESXi, Oracle Virtual Box and Microsoft Virtual PC.

Network Protocols: DHCP, DNS, SNMP, SMTP, Ethernet, NFS.

Databases: Oracle 8/9i/10,11G,DB2 and MySQL.

Open Source Tools & Other Exposure: Nagios, Introscope, Splunk, Puppet, Windows 2000/2003/2008 Server Installation & administration, Antivirus Software’s, MS Outlook; Knowledge on web development, graphics, Shell Scripting, OS Administration basics.

PROFESSIONAL EXPERIENCE

Confidential, Dallas, TX

Linux systems administrator

Responsibilities:

• Installation, Maintenance and Administration of Red Hat Enterprise, SUSE and Cent OS on VMS and physical server.
• Installation, configuration and management of Apache 2.24 servers.
• Supported 300+ Server in Dev, QA, Staging and Production environments plus primary support to all kind of issues for Redhat 5.x & 6.x Linux.
• Created users, manage user permissions, maintain User & File System quota on Red Hat Linux, CentOS and OEL.
• Designed and deployedAWSsolutions using E2C, S3, RDS, EBS, Elastic Load Balancer, and Auto scaling groups.
• Servers support included NFS, NTP, FTP, users setup/troubleshooting
• Implementing appropriate permissions for files and folders and Managing Users and Groups
• Creation and Maintenance of User Accounts file systems and successfully created logins IDs on large number of servers
• Installation, Maintenance and Administration of Red Hat Enterprise, SUSE and Cent OS on VMS and physical server.
• Install/configure/maintain the Linux servers, NIS, DNS, NFS, Mailing List, Sendmail, Apache, ftp, sshd.
• Performed TCP/IP, DNS and DHCP administration.
• Monitor Disk space and space as needed in LVM
• Installing and upgrading patches and packages on RHEL 5.1, 6.2 and 6.5 servers using RPM, YUM and third party software applications.
• Responsible for maintenance of both physical and virtual servers. Process involved installations, patching, upgrades various flavors of Linux.
• Upgraded firmware for Various Dell modeled servers, Dell Poweredge R410s, R610s, R720s and R810 in specific.
• Deploy puppet to completely provision and manageAWSEC2 instances, volumes, DNS, and S3.
• Installed and configured monitoring tool, particularly- Zabbix 2.2; addition of newly build servers, removal of old and outdated machines were the particular of Zabbix apart from monitoring different aspects of servers from memory usages to performance of servers.
• Upgraded Zabbix 2.2 to 2.4 and backed up MySQLdatabase using application called Percona for the process.
• Handled loadbalancing tool-F5 BIGIP; upgraded firmware, added new and removed outdated machines on it.
• Experience with version control tools like GIT and managed source code.
• Handled physical machine from removing the outdated model and replacing them with the new ones to configuring hardware to the demand and need.
• Configured the RAID level according to the request and performed task specific operations within BIOS and system settings
• Installation ofWeb /Application Server Apache-Tomcat,Web sphere application and mange users and service account with nopassword option in sudoers file to manage Webshere application.
• Installation of Database servers and users management such as Oracle, MYSQL, SQL Server.
• Monitoring and install or updates patch software’s, firmware, and security patches for all applications in installed infrastructure via Redhat network.
• Responsible for design, configuration and implementation of Nagios.
• Management of Puppet automation tool including installation of Puppet agent on client.
• Work on security compliance of the servers which include TCP/IP vulnerability fix, security patches management, password policy using IBM internal tool ITSAS
• Configure and setup Linux server samba protocol
• Responsible for system configuration and installation of software applications, operating system upgrades.
• Worked on daily task onRed Hat Linux that included upgrading rpms, kernel, HBA driver, configuring SAN Disks, multipathing and LVM file system
• Work on installation of VMware ESX5.5, migration of VMs and data storage, patch management, snapshot and template and clone
• Configuring, administering and trouble shooting of NFS, AutofS

Environment: Red Hat Enterprise Linux 4.x, 5.x, 6.x, Suse, CentOS, VERITAS Volume Manager, Samba, Zabbix 2.2,2.4, Puppet, Nagios, MySQL, Tomcat, Apache, Percona, Oracle RAC/ASM (11g), EMC Power path, DELL PowerEdge 6650, HP Proliant DL 385, 585, 580, Sun Fire v440

Confidential, Las Colinas, TX

Unix/Linux Systems Administrator

Responsibilities:

• Expert on installation and Configuration of RHEL 6.1, CentOS 6.0, Ubuntu 12.04, SLES 10 servers.
• Managed 100 + UNIX servers running RHEL, HPUX & Solaris on Oracle HP and Dell server including blade centers
• Supported Redhat servers in Production and Development environments.
• Install and configure DHCP, DNS (BIND, MS), web (Apache, IIS), mail (SMTP, IMAP, POP3), and file servers on AIX and Linux servers.
• Worked on Virtualizing Redhat servers using vSphere 4.1/5.0 and managed ESX servers using vCenter and also worked with ESX Cluster and vMotion.
• Installed and Configured Redhat Linux Kickstart and booting from SAN.
• Configuration and administration of Fiber card Adapter’s and handling of SAN (SAN arrays, HITACHI, EMC).
• Performed SAN Migration on RHEL servers.
• Installation and configuration of backup clients like Veritas Net Backup on Linux servers.
• Experience working with HP Openview client and server configuration.
• Experience in writing scripts to automate jobs and debugging scripts.
• Experience in using protocols like NIS, NFS, SSH, SFTP & DNS.
• Installation of Redhat EL 4.x, 5 using Kickstart/PXE and SuSe Professional desktop 10x.
• Installation and support of various applications like Weblogic server 10, Websphere 6.1, JBoss 4.x, Apache 2.x.
• Administration of Websphere Application Server 6.x with Network Deployment, and Extension Deployment, on Redhat Linux.
• Implemented day-to-day tasks in Red Hat Linux that include upgrading rpms, kernel, HBA driver, configuring SAN Disks, multipathing and LVM file system
• Used System Monitoring Tools such as Top, SAR, VMSTAT, IOSTAT, FREE, PS etc.
• Mirroring of root disks using Hardware Raid Controller on HP & Dell HW..
• Experience configuring Emulex Converged Network Adaptors by Installing One Command on RHEL servers.
• Creating volumes using storage for VMAX Array on Redhat& Solaris servers.
• Data migration Confidential Host level using Red Hat LVM, Veritas Volume Manager and Solaris LVM.
• Automated routine jobs by developing Korn, Perl and Bash shell-scripts.
• Troubleshooting and performance tuning of various systems problems such as application, network and hardware related issues.

Environment: Redhat EL, SuSe 10, IBM x3650,IBM HS22 Blade Center, T2000, T5240, V240, V880/890, BL460c, EMC-AvamarNetbackup, IBM Storage Manager, HP, Cisco Works, Korn shell, VMware ESX3.5, VMware Vsphere ESX4.0.

Confidential, Dallas, TX

Unix/Linux Administrator

Responsibilities:

• Installation, configuration & administration of RED Hat Linux 8/ 9/ RHEL 3.x/4.x/5.1,5.2, CentOS 5/5.1/6 and AIX 5.1/5.2 servers.
• Configured IBM p5,B80,RS6000,520,550,570,590,595,610,690.695, z/VM 5.4 for production, staging and test environments.
• Responsible for determining hardware and compatibility requirements for installation of application software and different tools.
• Upgraded IBM-z/VM 5.4 servers to new technology levels configured LVMs on AIX 5.1, 5.2.
• Logical Volume Management (LVM) administration of AIX.
• Performance Management & Tuning of AIX UNIX Kernel.
• Installation of Oracle Patches and Troubleshooting, Creating and modifying application relatedobjects,
• Creating profiles, users, roles and maintaining security.
• Configured File Systems, users and group for Oracle and Websphere.
• Configuration of Kernel parameters for Oracle Database.
• Developed Shell scripts (Korn/Bourne) for automating the batch jobs.
• Extensively used LVM, created VGs, LVs, and disk mirroring.
• Monitored file system space using simple shell scripts; resize file systems as and when required.
• Configured clustering by using Veritas Clustering.
• Created users, manage user permissions, maintain User & File system quota on Linux servers.
• Backup configuration using Veritas Netbackup.
• Administrator of IBM RS/6000 servers running AIX 5.1 for support of on Oracle, DB2, DNS, FTP.
• Setup and configured network TCP/IP on Red Hat LINUX, CentOS and AIX servers including RPC connectivity for NFS. Created mount points for Server directories, and mounted these directories on the Servers.
• Setup of full networking services and protocols including NIS/NFS, DNS, SSH, DHCP, NIDS, TCP/IP, ARP, applications, and print servers to insure optimal networking, application, and printing functionality.
• Clustered multiple RS/6000 machines on AIX 5.1 using HACMP, configured HACMP cluster to keep applications running.
• Perform daily Tivoli Storage Manager (TSM) Administrator duties to ensure all information processed through systems and databases are efficient.
• Performed deployment activities, environment support including installation, configuration diagnostics, planning and upgrades for Jboss Application Server..
• Perform daily TSM, EMC, SAN Administrator duties to ensure all information processed through systems and databases are efficient.
• Installed and setup CUPS, LPD, configured local and remote printers.
• Installation and configuration of windows 2000 server /windows 2000 professional windows XP /windows 98.
• Coordinating network, creating users account, assigning rights, sharing permission and managing profiles.
• Creating and configuring network connection-using TCP/IP, IPX
• System policies and hardware profiles, hard disk configuration for fault tolerance, disk mirroring and backup the data using BACKUP devices.

Environment: IBM zSeries, z/VM5.1, AIX 5.2 Servers in IBM P570, 550, 570, 590, 595, 610, 690, 695, HACMP 5.3, SUSE Linux, IBM DS4300 Storage System, Red Hat Linux 3.x/4.x/5.x,CentOS 4.6/4.7/5, Tivoli Storage Manager 4.2, LDAP, HACMP Cluster, VERITAS Clusters, VERITAS Volume Manager, VMware, Hitachi Disk Array, Apache 2.0, NFS, Software RAID, DNS Servers.

Confidential, Chicago, IL

System Admin (UNIX/LINUX)

Responsibilities:

• Installed, Configured and maintained Red Hat Linux, CentOS, SUSE, AIX and Solaris servers.
• Storage setups, RAID, Logical Volume Manager, system backup design and disaster recovery
• Systems performance monitoring.
• Experience with VMware Virtualization.
• Responsible for troubleshooting end user and application problems.
• Creating User accounts, Mail account, groups, printer etc.
• Installing operating systems, patches, hardware, vendor software packages, system customization and documentation of all departmental UNIX, PC-based workstations and Terminal.
• Monitoring system resources, logs, disk usage, scheduling backups and restore.
• Set up Quotas for the user accounts & limiting the disk space usage.
• Creation/Configuration of Additional swap/ tmp dynamically as and when required.
• NFS Management - Take care of user accounts/groups, setting up of NFS Environment.
• Solving the problems as & when created when NFS data being accessed.
• Configured auto mounts/maps for the user accounts.
• Administration/Configuration of Print Servers/Clients in the Network
• Worked closely with database administration staff to ensure optimal performance of databases, and maintain development applications and databases.
• Assembling the systems and installing operating system and application software.
• Designing computer displays to accomplish goals using flowcharts and diagrams.
• Installing Operating Systems and Application Software.
• Training for users to use the program.

Environment: SUSE Linux, IBM DS4300 Storage System, Red Hat Linux 3.x/4.x/5.x,CentOS 4.6/4.7/5, Tivoli Storage Manager 4.2, LDAP, HACMP Cluster, VERITAS Clusters, VERITAS Volume Manager, VMware, Hitachi Disk Array, Apache 2.0, NFS, Software RAID, DNS Servers.

Confidential

Linux/UNIX System Administrator

Responsibilities:

• Administration and maintenance of Redhat Linux, AIX and Sun Solaris.
• Worked on Oracle and MySQL Databases and performed performance tuning and troubleshooting.
• Worked on User administration setup, maintaining account, Monitor system performance.
• Activities include user administration; startup and shutdown scripts; crontab, file system maintenance, backup scripting and automation using shell scripting for Red Hat Linux systems.
• Experience in system Software installation and configuration of NFS shares, Auto-Mounter, DHCP and LDAP
• Manage logical Volume manager on Red hat Servers.
• Troubleshooting day-to-day server related issues and problems in terms of operating system, applications and network
• Configure RAID mirroring on Linux platform
• Maintained and monitoring System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues
• Installation of VMware ESX3.5.4.x infrastructure on Dell Power Edge Server and administration of VMs
• Experience in installing, integrating, tuning and troubleshooting Apache and Tomcat application server.
• Configuring, administering and trouble shooting of NFS, AutoFS (Direct and Indirect Maps), NIS (master, slave and client) and DNS in multi-platform networks.
• Install and configure SSH to enable secure access to the servers.
• Modified the Linux kernel to add tracing probes for Configuration access tool.
• Environment, Command line, Current working directory, root directory, executed command.
• Experience in Shell scripting bash to automate system administration jobs

Environment: Redhat EL 4.x, 5.x, ESX 3.x,4.x,Window, Samba 3.3.x, Veritas Netbackup 5.0,6.5, Veritas Cluster Server 5, DL 580, 585, EMC Symmetrix DMX-3,