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Sr. Linux Engineer Resume

Dallas, TX

SUMMARY

  • Over 7+ years of experience in Administration and Development of Red Hat Linux, SUSE Linux, Ubuntu & OEL.
  • Experienced in Installing, configuring and administering of Linux Falvours (Red Hat Linux 4.x/5.x/6.x/7.x, OEL, SUSE, Ubuntu) on HW like Dell, Cisco, IBM and HP Rack servers and also experience with HP and CiscoBaldex 86 Servers like C7000.
  • Design and Implementation of migration strategy for consolidating Data Centers from around the world to two centralized locations in US which involves 6000+ servers of various Linux versions.
  • Identification, planning and migration of P2V candida and new builds from each sites without any downtime.
  • Consolidation and Capacity planning of Physical Servers using VMWare tools and also P2V Conversions.
  • Works closely with Network and security team to open the required ports for communication during migration and production cutover activities.
  • Experience in TCP/IP Networking.
  • Experience working with AWS Cloud computing and launching Instances.
  • Using Server automation (BladeLogic) too to run the scripts/patches in multiple servers.
  • Creating and managing Virtual Machines and Templates, worked with clones and snapshots of Virtual Machines.
  • Experience in transformation and remediation process.
  • Involved in installation, configuration and testing of Double - Take Share for Data Transfer for Solaris and AIX Servers.
  • Troubleshooting, documenting and knowledge transferring of Double Take process to the BUs.
  • Involved in migration of project from one flavor to another one.
  • Knowledge in IIS6 & IIS7 administration.
  • Strong Experience on Migrating from Windows 2000/ using Double-Take Availability.
  • Works closely with Java Team to Deploy the application and trouble shoot.
  • Worked in heterogeneous environment. Installing, configuring and administration on IBM AIX 5/6/7, Red Hat Linux 8, 9 and RH AS 2.1, RHEL 3.x, 4.x, Suse Linux Enterprise Server (SLES) 10.x.
  • Implemented and Enhanced the Existing Scripts which are developed in Shell, Perl, andSQL.
  • Worked with Backup Team to Configure the Master and Client Backup servers Using VERITAS Net Back up 4.5/5.0
  • Performed Servers consolidation and virtualization using VMware virtual infrastructure, VMware ESX, Virtual Center, VM tools.
  • Experience in virtual infrastructure and Enterprise Cloud technologies
  • Configuring Kickstart Servers and booting the images using PXE in Red hat Linux (RHEL).
  • Expertise in Volume management, Disk Management, software RAID solutionsFile system Tuning and growing.
  • Experience with creation and administration of virtual machines on VMWare ESXi and Infrastructure 3.
  • Experienced with the installation, configuration of LVM on AIX and Logical Volume Manager (LVM) on Linux and experienced in RAID 1, 5, 51, 10, 01 configuration.
  • Good experience and understanding of SAN (SAN arrays; HITACHI, EMC) technology including zoning, disk creation on various systems, maintaining and configuring various fiber switches and storages.
  • Experience in supporting Linux and Solaris servers connected to EMC VMAXand VNX and managed storage LUN’s using native multipathing and EMC Powerpath.
  • Experience in network administration, deploying and troubleshooting of DNS, LDAP, NIS, NFS and DHCP etc.
  • Expertise in System performance tuning, capacity planning and Disaster Recovery planning.
  • Experience with patching of Linux servers and hardening of servers using native and third party tools.
  • Disk and File system management through Logical Volume Manager (LVM) on LINUX.
  • Knowledge of networking (TCP/IP, Ethernet), NIS, DNS, NFS, DHCP, SMTP and RAID.
  • Knowledge of Routers and Switches, Subnet, VLAN, TCP/IP, VPN, OSI model, Firewall (checkpoint), VOIP, and Sarbanes Oxley compliance (SOX).
  • Experience in Shell scripting (ksh, bash) to automate system administration jobs
  • Extensive experience in UNIX performance monitoring and kernel tuning and Load balancing to ensure stable performance.
  • Good knowledge in virtualization using VMWAARE ESX 3.5, 4.0 for redhat Linux and Solaris x 86 platforms.
  • Proficient in Installation, configuration, maintenance of open LDAP server and applications integrated with Apache Web server and Postfix mail server for user authentication.
  • Strong technical background in Storage, Disk Management, Logical Volume Management (LVM) and logical partitioning.
  • Configured DNS, LDAP, I-planet, Apache HTTP servers.
  • Good Knowledge in virtualization using WPARS & LPARS on IBM Power environment.
  • Excellent communication skills, enthusiastic with the drive and determination to do whatever it takes to get the job done.

TECHNICAL SKILLS

Operating Systems: Linux (Red Hat, OEL, Ubuntu & SUSE), SLES 8,9,10, 11 & 12, Solaris 8/9/10/11, Windows NT / 2003/2008/2012.

Hardware: HP Proliant DL 380, 580, 480 G4, G5, G6 &G7 servers, HP Blade Enclosures C7000 & C6000, IBM P550, 650, 660, Dell PowerEdge 2800,r310, r410, r710, Intel Servers, Extreme network and Cisco switches, Brocade Switches, A1000, A5200, 3510, 3511, D1000, Sun Store Edge T3, 9980

Networking: TCP/IP, NIS, NFS, DNS, DHCP, Cisco Routers/Switches, WAN, SMTP, LAN, FTP/TFTP.

WEB Technologies: Tomcat, APACHE 2.x, 3.x, Web Logic (8/9/10) & Web Sphere 4.0/5.0,IIS6.0/7.0, C, UNIX Shell Scripting, Perl Scripting, HTML, Perl, VB.

Programming Languages: C, UNIX Shell Scripting, Perl Scripting, HTML, Perl, VB

Backup Management: 4.x/5.x/6.x, Ufsdump, Ufsrestore, tar, cpio, dd, Tivoli

Third Party Software: VERITAS Volume Manager, EMC Storage, RAID Technologies, SSL, Double-Take, BMC Blade Logic.

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

PROFESSIONAL EXPERIENCE

Confidential, Dallas, TX

Sr. Linux Engineer

Responsibilities:

  • Worked on variety of Linux platforms Red Hat Linux 5/6 & Solaris which includes installation, configuring and maintenance of applications on this environment.
  • 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 Powerpath and Linux native multipathing.
  • Troubleshooting network administration, IIS configuration, DNS setup and modifications, firewall rule sets, local and distributed director, connectivity, and supporting applications.
  • Experience in creating instances on AWS cloud environment and involved in creating Virtual Private cloud, Security groups and launching custom Redhat Instances.
  • Responsible for independent support of Tier 2 issues: reboots, start/stop services, reset Terminal Service and pc anywhere connections, and administrative server maintenance. Daily follow up with clients to ensure resolution of all issues.
  • Provide support to Account Managers, UNIX and Windows technicians, and other departments
  • Build servers using Kick Start, Red Hat Satellite Server, and vSphere Client
  • Updating patches to keep servers updated against bugs present in the operating system usingRed Hat Satellite Server, yum, etc.
  • Worked exclusively on VMware virtual environment.
  • Experience in using VMware veeam to move VM’s from One Datacenter to another datacenter.
  • Installed, configured and provided support for Tivoli Monitoring software across various OS platforms like RHEL and Solaris.
  • Installed packages using YUM and Red hat Package Manager ( RPM ) on various servers
  • Day to day resolution on Linux based issued though SMS ticketing system in compliance to SLA cycles.
  • Automating many day to day tasks through Bash scripting.
  • Worked with Red Hat Satellite Server which is used to push changes across various servers simultaneously.
  • Performed the daily system administration tasks like managing system resources and end users support operations and security.
  • 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.
  • Activities includes user administration; startup and shutdown scripts; crontabs, file system maintenance, backup scripting and automation using Perl, shell scripting (bash, ksh) for Red Hat Linux systems.
  • Implemented and administeredVMware ESX 3.5, 4.xfor running the Windows 2003/2008 Servers on development and test servers.
  • Install and configure SSH to enable secure access to the servers.

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

Confidential, NH

Linux Engineer

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 support 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
  • Automated tasks using bash, korn shell scripts.
  • Backup and restore of file systems using VeritasNetbackup 6.5.

Environment: SUSE 9,10, Solaris 8, 9, 10, Redhat EL 3, 4.x,VM Ware ESX 3.5, Virtual Center 2.5, BMC Patrol for Unix, Apache 2.2.x, Sun Java System Web Server 7, WebLogic 10, ksh, bash, Oracle 10g, Sun SPARC Enterprise T2000, T5120, Sun Fire v890, 6800, x4100, x4150, E6900, M5000, M 8000, 3510, 3511, Hitachi Lightening 9970v

Confidential, NY

Linux Administrator

Responsibilities:

  • Installation of Oracle 10g on the Sun servers running Solaris 8, 9, SuSe Linux ES 10 and Redhat AS 2.1, EL 3 and 4.x.
  • Experience on working with a SAN environment which included working with SAN teams and the environment included Brocade Silkworm 4900 switches, EMC Symmetrix DMX 4 and Sun StorEdge 9980
  • Installing and upgrading Solaris 8, 9, 10, Redhat EL 3, 4.x and Suse EL Server 10.
  • Involved in building Linux over network using Kickstarting for Redhat EL 5.x.
  • Creating resource pools, zones and containers on Solaris 10 and v490s, v890s to optimize and consolidate the use of the hardware.
  • Worked on LDOMs on Sun T2000 servers.
  • Worked on LAMP for configuring Mantis Bug tracking tool and Wordpress blog software.
  • Installing Veritas Volume Manager 4.1. Implementing RAID and creating Disk Groups, Volume and Logical volumes using VxVM on Solaris to manage the storage resources and creating, resizing and managing volumes and used LVM on IBM AIX, Linux to create Volumes on the Volume Groups, Volumes and file systems.
  • Mirroring the root disks using Sun Volume Manager.
  • User, Group management and security policy management for the all servers including Windows and UNIX using RBAC, sudo etc.
  • Performance Analysis of resources like CPU, Memory, Disk and Swap from command line using commands like prstat, vmstat, sar, iostat, swap etc. and tuning of the kernel parameters for the better performance of the operating system and TCP.
  • Hardening the servers as per the compliance norms by analyzing the availability of the services that are needed on the servers based on the functionality and disabling the services which are not needed. Installation and configuration of TCP wrappers and constant security patch updates as a part of the exercise to harden the servers.
  • Was involved in creation of a Project plan and the implementation of a backup solution using Veritas NetBackup 5 and StorageTek L700 tape libraries.
  • Deployment of System 5 packages on production servers.
  • Modifying/ Writing scripts for day-to-day job and administration.
  • Creating test environment and assisting in Change control management.
  • Troubleshooting day-to-day server related issues and problems.

Confidential

System Administrator

Responsibilities:

  • Installing, configuring and updating Redhat Linux and IBM AIX 4/5 systems.
  • Designing System Requirements, Designing Storage requirements, Configuration Management/Change control/Release management.
  • Installing Veritas Volume Manager 4.0 and configuring Disk Groups, Volume Groups and Logical volumes to manage the storage resources.
  • Creating, Resizing and managing online JFS Filesystem for users upon user request using Veritas Volume manager and LVM.
  • Patch and Package administration to keep the servers updated with the patches and that implementing packages developed for deployment.
  • Installed and Configured SSH for secured access on IBM AIX and RedhatLinuxSystems.
  • Installing and Configuring HP-OMNIBACK 4.10 for Backup of more than 30 Servers.
  • Installing, configuring various software applications and packages like Apache 1.3.18, WebLogic 7.x, Oracle 9i etc.
  • Implementing NIS and DNS naming services and administering the public DNS servers.
  • Monitoring System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
  • Tuning the Kernel parameters for the better performance of applications like Oracle, WebLogic etc.
  • Troubleshooting day-to-day server related issues and problems in terms of hardware, operating system, applications and network.
  • Worked on User administration setup, maintaining account, Monitor system performance.
  • Experience in Shell scripting (ksh, bash) to automate system administration jobs
  • Mentoring junior team members to support production web environment.

Confidential

Systems Administrator (UNIX)

Responsibilities:

  • Configured firewall based on Redhat Linux and FreeBSD 4.x that has three network interfaces.
  • Implemented a High Availability Cluster using 2 V480s, a T3 and Veritas Cluster Server 4.0.
  • Installation, Maintenance, Administration and troubleshooting of IBM AIX 4/5 and Redhat 9, AS 3.0 servers on various hardware platforms that include IBM Power servers & Dell 6400, 2400, 1800 etc.
  • Performed automated installations of Operating System using NIM for AIX and Kickstart for Linux.
  • Extensively worked on hard disk mirroring and stripe with parity using RAID controllers
  • Developed, customized and build packages on IBM AIX and RPMs on Linux for deployment on various servers through Software Development Life Cycle.
  • Designed bash, ksh, and Perl scripts to automate application and system management activities. These scripts provided the following functionality: application startup and shutdown, monitored systems and applications health, and web site management
  • Installation, Management, Configuration of LAN/WAN systems utilizing Cisco switches and routers.
  • Configured various services, devices as well as applications of UNIX servers and worked with application team to customize the environment. Worked with Apache and developed several UNIX scripts to automate web tasks
  • Managed existing documentation for systems and created new procedures to support new products. Created documentation for disaster recovery project

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