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Sr. Linux Admin Resume

Dallas, TX

SUMMARY:

  • Over 9+ years of IT industry experience as a System Administrator and Production Support of various applications on Sun Solaris, Red Hat Enterprise Linux, and Windows environment.
  • Experienced in Installs, Upgrades, Patches, Configuration, performance tuning on UNIX and system software & hardware.
  • Experience in Installing, configuring and maintaining Samba, Web Sphere & Web Logic Application Servers, Nagois and Chef.
  • Supported AWS Cloud environment with 200+ AWS instances and configured Elastic IP & Elastic Storage and also experience working on implemented security groups.
  • Knowledge of Big data and Hadoop ecosystem and its components like HDFS, Hive, Pig, Scoop and Hbase.
  • Efficiency in installing, configuring and implementing the LVM, and RAID Technologies using various tools like Veritas volume manager, Solaris volume manager.
  • Experience configuring and managing Puppet master server and also experience in updating and creating modules and pushing them to puppet clients.
  • Experience in Installed and configured Apache/Tomcat/Java/MySQL.
  • Experienced in Amazon EC2 setting up instances, virtual private cloud (VPCs), and security groups.
  • Extensively used Veritas Cluster Server 4.x & 5.x.
  • Configuring and Administering DNS, NIS, NIS+, LAMP and LDAP on Sun Solaris server environment.
  • Experience in Install and configuration of Web hosting administration HTTP, FTP, SSH, & RSH
  • Experience in Installing, upgrading and configuring SUN Solaris 9 and 10 on Sun Servers Using Jumpstart Servers, Manual installation as when required.
  • Experience in Installation of VMware ESX server and creation of VMs and install different guest OS.
  • Experience in Installation and configuration of Zones and Containers in Solaris 10 environment.
  • Experience in Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.
  • Experience in Veritas Volume manager (VxVM), Mirroring, and striping, Parity, New File Systems, Mounting and Unmounting File Systems.
  • Resolving system errors and crashes, huge file sizes, file system full errors.
  • Experience in Package management using RPM, YUM and UP2DATE in Red Hat Linux.
  • Worked on Firewall implementation & Load balancer between various Windows servers.
  • Ability to write Shell & Perl scripting.
  • Excellent analytical, problem solving, communication and interpersonal skills.
  • Capable of quickly learning and delivering solutions as an individual and as part of a team.
  • Populate Splunk from 3rd party data sources

SKILL:

Operating Systems: Linux (RedHat, CENTOS ), Solaris 10/9/8, HP - UX 11.0, 11.11, IBM AIX (4.3/5.x), HPUX11i V1, V2 & V3, VMware ESX, SLES 8,9,10 & 11, Windows NT /2000/2003, MAC OS X 8/9.x/10.x.

Hardware: M5000, M8000, T5220, T5240 Sun E15K, E25K, Sun Fire 6800/4900/3800 , Sun Fire 490/280, v880/v890, Sun Enterprise Servers E6500, E4500, E3500, Work Group Servers E450, E420, E250, E220, Netra 1405, Netra X1, Ultra 80, 60, 30, 10, 5, 2, 1, Intel Servers

Networking: TCP/IP, NIS, NFS, FTP, DNS, DHCP, Samba, Apache, SMTP, SSH, IP-Tables

WEB Technologies: Tomcat, APACHE 2.x, 3.x, Web Logic (8/9/10) & Web Sphere 4.0/5.0

Programming, Scripting Language & Databases: RDBMS, MySQL, Oracle, Sybase, MSSQL, C, UNIX Shell Scripting, Perl Scripting, Python, Ruby, HTML, VB, distributed Splunk administration

Backup Management: Veritas Net backup 4.x/5.x/6.x, Ufsdump, Ufsrestore, TAR, cpio, dd, Tivoli, Symantec Netbackup 7.x

Third Party Software: VERITAS Volume Manager, VERITAS Cluster Service (VCS), HP Service Guard, Sun Cluster, EMC Storage, RAID Technologies, SSL, Splunk

Protocols: TCP/IP, UDP RIP, OSPF, EIGRP, IGRP, SNMP, SMTP, TELNET

PROFESSIONAL EXPERIENCE:

Confidential, Dallas, TX

Sr. Linux Admin

Responsibilities:

  • Installed and configured several hundred Red Hat Blade and VMware ESXi 4.1, 5& 5.5 Virtual Environment.
  • Configured Red Hat Cluster Nodes for any legacy applications and verified the daily health check on the Cluster Nodes.
  • Assisted in physically installing, racking and cabling new BM Blade Center S and Cisco UCS 5108 Chassis environment.
  • Installing and configuring Red Hat Enterprise Linux 5, 6.1 using kick start servers and virtual
  • Media based installs on several hundred Cisco UCS B 0 and BM Blade Center S as required for UAT/Production Oracle Web logic. Red hat JBoss, Oracle Enterprise Database and MySQL Database Server requirements.
  • Responsible for installation, Configuration and administration of Oracle10g/11g database on SCO Unix, Linux and Windows 2003 Servers and also an integral part of the backup and recovery.
  • Installing and updating packages using YUM (custom YUM servers/repositories) and Red Hat Satellite Server.
  • Configured and Administered Apache, VSFTPD services, MYSQL and Tomcat.
  • Participating in 24x7 production on-call support of Linux and provided technical support to users.
  • Configured various alerts, captured support logs and configured resource pools utilizing Cisco UCS Manager.
  • Configured and deployed patches, upgrades, bug fixes on both physical and virtual Red Hat Linux servers using satellite servers.
  • Implemented rapid provisioning and life cycle management for Redhat LINUX using kickstart
  • Expertise in security hardening (iptables/selinux) major Production Servers, and compiling, building and installing web server based Linux tools.
  • Experience in performing, uploading and upgrading new firmware on the Interconnects and Chassis
  • Proficient in providing support on the deployed Red Hat Enterprise Linux & Sun Solaris servers from both operating system level and application Level.
  • Expertise in configuring Red Hat Cluster Nodes for any legacy applications and verified the daily health check on the Cluster Nodes utilizing clusters.
  • Expertise in creating VM Templates, cloning and managing Snapshots.
  • Expertise in working with MySQL databases, Apache Web server, Tomcat Application Servers
  • Troubleshooting any performance or configuration issues with MySQL and Oracle.
  • Expertise in hardening, Linux Server and Compiling, Building and installing Apache Server from sources with minimum modules.
  • Monitoring and troubleshoot backups and schedule Cron jobs.
  • Experience in scripting using BASH & PERL, Mail Server, Samba Server, Apache Server.
  • Worked on configuring NIS, NFS, DNS, DHCP, FTP, FSTP, Telnet and RAID levels.
  • Extensive experience in network management TCP/IP, NIS, DNS, NFS, VLAN.
  • Experience in database replication using OCFS2 file system with oracle 10g and 11g database
  • Experience in deploying several sets of Linux guest builds from VMware templates using PowerCLI as well as Red Hat Satellite Server.
  • Experience in deploying RHEL 5.x, 6.1 in a blade environment.
  • Patch management of servers and maintaining server's environment in Development/QA/Staging/Production.
  • Resolving assigned remedy tickets and remedy tools in Development/QA/Staging/Production.

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, Austin, Texas

System Engineer

Responsibilities:

  • Supported Solaris /Linux servers in production / stage / development environment.
  • Configure and administrate database cluster using VERITAS cluster.
  • VERITAS Volume Manager 3.x/4.x and Solstice Disk suite (SVM) RAID configuration, troubleshooting, maintenance, disk management & space allocation etc.
  • Migrated Sun Server (Around 1000) and HP Servers (Around 300) Lift and Shift from Old Data Center to New Data Center on a Weekly Basis.
  • Installation Configuration troubleshooting & maintenance of VERITAS cluster.
  • Solaris 7, 8 & 9, 10 OS configuration, performance tuning, patching and maintenance.
  • Sun Servers Hardware, OBP configuration & troubleshooting
  • REDHAT Enterprise Linux 3, 4 Installation on various servers using Kick start and configuration & support for various applications run on Linux environment.
  • Performed Mechanization Puppet and Chef.
  • Exclusively done Oracle Migration from 4 Node Cluster to 4 Cluster and also 6 Node to 2 Node.
  • Performed SRT testing before bring the Cluster into the Production.
  • Migrated VERITAS Disk Groups using Deport and Import Techniques.
  • Day to day duties for UNIX/Linux server Maintenance and Support to developer's team for their issues with application, tuning, troubleshooting, software running on UNIX/Linux Servers.
  • Disaster Recovery operation setup & checkup at contracting facility
  • Performed e in installing, configuring and trouble-Shooting web servers like IBM HTTP Web Server , Apache Web Server , Websphere Application Servers, and Samba Server on Linux (Redhat & CentOS) .
  • Automation scripts for weekly and monthly backups in perl and shell
  • UNIX Server monitoring for maximum availability using BMC patrol and other monitoring tools and taking steps to keep servers up and running under 24x7 environment for maximum uptime.
  • 24x7 support for the UNIX servers. Rotating on call pager responsibilities for Production environment.

Environment: Solaris 8/9 with NFS and NIS, Linux RHRL3,4, Sun Ultra Sparc 60,SunE220,E250,E450,E3500, E4500, VMware, Solstice Disk Suites, Volume Manager (VxVm) 4.1,Veritas Cluster server (VCS), VMware.

Confidential, Bloomington, IL

Unix/Linux Admin

Responsibilities:

  • Supported Solaris /Linux servers in production/QA/ Development Environment, including Solaris Zone and RHEL VM's.
  • Installed and Configured Solaris zones: whole, sparse, branded on Sun Hw (x4140,x4170,T5240.T3-1,T3-2)
  • Installed ESXi 4.1 Hypervisor on HP Servers.
  • Installing, configuring and maintaining apache, samba, Web Sphere& Web Logic Application Servers and Nagois .
  • Worked on VMware, VMware View, vSphere 4.0. Dealt with ESX, ESXi servers.
  • Enhanced and simplified vCenter server 4.0.
  • Installation of systems using Jumpstart for Sun Servers and Kickstart for RHEL on HP Hw.
  • Configure, support and perform routine maintenance of hardware and software for Linux and Solaris servers.
  • Launching Amazon EC2 Cloud Instances using Amazon Images (Linux/ Ubuntu) and Configuring launched instances with respect to specific applications.
  • Supported 200+ AWS cloud instances running Ubuntu, Redhat and Windows environments.
  • Involved in Hardware and software evaluation, recommendation and vendor management.
  • Automation of various administrative tasks on multiple servers using Puppet.
  • Deployed Puppet, Puppet Dashboard, and Puppet DB for configuration management to existing infrastructure.
  • Proficient in installation, configuration and maintenance of applications like Apache, LDAP, PHP
  • Involved installing and managing different automation and monitoring tools on Redhat Linux like Nagios, Splunk and Puppet.
  • Resolved config issues and problems related to OS, NFS mounts, LDAP user ids DNS and issues.
  • Experience in creation and maintenance of ZFS file systems / set quotas.
  • Regularly applying patches for Redhat Linux, Sun and HP systems.
  • Develop Unix Shell scripts for regular and periodic jobs and also for sysadmin jobs.
  • Extensively worked with Business, Application, Database, Network and SAN Team for project requirement.
  • Project co-ordination and providing technical advice on system to management
  • Plan, document, review and maintain system administration guidelines and policies
  • Manage and co-ordinate Unix and Linux administration tasks
  • Ensure Data Center operation meets required service levels
  • 24x7 support for the UNIX servers. Rotating on call pager responsibilities for Production environment.

Environment : Solaris 9 & 10, RHEL 4.X,5.x,6.x: Sun Ultra Sparc T5220,T5240, T3-1,2,M5000,X4140,x4170; HP DL360, 380 & 580; VMware, Solstice Disk Suites, ZFS; Volume Manager (VxVm) 4.1, Veritas Cluster server (VCS), VMware. disk suite (SDS), SUN UCE, Jboss, Veritas Volume Manager (VxVm),VMware, Veritas Cluster server (VCS).

Confidential, Detroit, MI

System Engineer

Responsibilities:

  • Provided 24 X 7 on call support (locally and remotely) for around 500+ sun servers in a Data Center Production Environment
  • Performed Red hat Linux Kick-start Installation - Sun Solaris Jump start Installation.
  • Preformed Installation, adding and replacement of Disks, Cards and Maintenance of SUN Servers.
  • Installed, upgraded and loaded Patches and Packages on Sun Servers.
  • Attended to users, developer problems; did troubleshoot the system and end user issues.
  • Created and maintained Operating System Installation Documents.
  • Monitored system performance, tune-up kernel parameter, added /removed /administered hosts, users.
  • Scheduled Jobs using CRONTAB and AT Utility and wrote shell scripts to automate System Process.
  • Managed NIS, NFS and Send mail Server.
  • Added more resources like Memory, Disks and increasing the Swap.
  • Performed User and Group Management using Admintool.
  • Involved in documenting of Linux and Windows environment and configuration details including documentation of solutions for any issues that have not been discovered previously.

Environment: Solaris 8, Sun Enterprise, Servers E4500 and E3500, Sun SPARC 1000, Perl, shell Scripting, CRONTAB/AT.

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