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Sr. Linux Engineer/ Devops Admin Resume

4.00 Rating

UT

PROFESSIONAL SUMMARY:

  • IT Professional with 8+ years’ experience and recognized for exceptional technical proficiency and astute understanding of business operations. Outstanding problem - solving, analytical and decision-making skills with proven ability to conceptualize solutions to challenging situations and implement practical, cost-effective project plans.
  • A talented strategist, communicator, Team player, Trusted advisor to Senior Management. Areas of expertise include:
  • Support and maintain HP Proliant DL Series, C7000,C6000 enclosures,HP BL20,BL40 generation 2,3,4 HP PA-RISC, IBM X Series, HS Blade Centers & Sun Ultra enterprise servers (E3500, E4500, E450, E420R, E250), Sun Fire (6800/4800/3800/v880/280R) and Sun workstations (Ultra 5, 10, 20, Blade 100,150, 2000)
  • Experience with day to day System Administration tasks like new Builds, Installs, Upgrades, Patches, Migration, Trouble shooting, Security, Backup, Disaster Recovery, Performance Monitoring and Fine-tuning on UNIX (SUN Solaris, Red Hat Linux and HPUX) Systems.
  • Experience working in Large and small scale Data Center Environments supporting Servers, Storage and Tape Libraries and Implementing Virtualization using VMware ESX 3.5 & 4.x Versions for Red hat Linux 5.x (5.3 &5.4) & 6.x and Windows and Solaris Zones & LDoms in Solaris 10 on Physical servers.
  • Familiar with Splunk in creating Dashboards for generating the reports as required by Business and installing and configuring 3.x and 4.x versions on Linux /Solaris.
  • Familiar working with VBlock and CISCO UCS
  • Experience working on High availability (HA) servers configured in Cluster environment. (Redhat cluster, Sun Cluster,HP cluster)
  • Configured and worked on HP ILO for HP servers, Idrac for Dell services, SUN console for Sun hardware (XSCF, SC, FUJITSU Prime Power)
  • Extensive experience in Online and Offline Migrations using LVM, EMC Open Migrator & VERITAS Volume Manager, and Experience working with EMC SAN Storage devices like Clariion, Celerra, DMX and VMAX, VNX and worked with EMC Software’s like Open Migrator & Power Path and worked with EMC Clarion CX3 Series SAN storage and troubleshooting CX4 devices using Navi Analyser also worked with Hitachi’s USP, USPV and VSP storages.
  • Experience using automation tools Puppet, Nagios.
  • Experienced in Amazon EC2 setting up instances, virtual private cloud (VPCs), and security groups
  • Experience on Red hat Linux Server & Desktop Environment using through Virtual Machine under VMware and Involved in Design, Planning and Implementing Migration activities to move application from Solaris 9, 10 & 11 to Redhat Linux Environment.
  • Experience in Designing & Creating Zones on M3000, M5000 servers created LDoms on T2000, T5220 and T5440 servers and in Security Hardening in UNIX, Linux and Windows servers.
  • Installed, configured and implemented the RAID 0/1/5 volume management using VERITAS Volume manager (3.5/4.x/5.0) and Solstice Disk Suite (SVM) on Solaris. Also Experienced in VERITAS file system (3.x, 4.x, 5.0), VERITAS Net Backup (4.x, 5.x, 6.x) for disk management and mirroring tasks.
  • Experience in installing, configuring, supporting and troubleshooting Unix/Linux Networking services and protocols like NIS, NIS+, LDAP, DNS, NFS, DHCP, NAS, FTP, SSH and SAMBA and also worked on monitoring tools like Cacti and Nagios.
  • Experience on working Red hat Linux satellite server 5.6
  • Worked on installing software’s packages like NIS, NFS, sendmail, open ssh & compliers using Redhat Package Manager (RPM) on Redhat Linux, Packages on Solaris and Deports on HPUX and configured them efficiently.
  • Proficient in System Backup and Recovery from tapes using ufsdump, ufsrestore, tar and cpio and well versed in configuring Volume Groups and Logical Volumes, extended logical volumes for the system growth needs using Logical Volume Manager (LVM).
  • Expert in Installing and troubleshooting TIBCO Messaging Brokers and IBM MQ Queue Managers.
  • Experience raising and presenting the GCM (Global Change Management) Tickets for the Production Environment
  • Experience supporting 24x7 production computing environments providing on-call and weekend support and have an ability to work independently as well as a team member with ability to meet deadlines on or ahead of schedule. Extremely customer focused.

TECHNICAL SKILLS:

Operating Systems: Sun Solaris 11/10/9/8/7/2.x, VMware ESX 3.5 & 4.x, Linux (RedHat Enterprise, SUSE),RHEL 4.X, 5.X & 6.1, HPUX11.0,11i V1 WindowsNT4,Windows98/2000/2003/2008/XP.

Hardware: Sun Fire V440, V120, V480, V490, V880, Sun Fire X4100, X4200, X4440, X4140, X4170, X4500, X4540 Sun Fire 2900, 4800, 6900, Sun Enterprise Servers T5120, T5220, T5240, T2000, T3-1, T3-2, M5000 & M9000, HP DL360, 580 G4, G5,&G6, HP C7000 & C60000 Blade Enclosures, HP9000

Automation: Scripting, Puppet, Chef.

Databases: Oracle 10g/9/8, Sybase 11.5.1, POSTGRESSQL, MYSQL, MSACESS

Networking: TCP/IP, DNS, NFS, NIS, SSH, DHCP, Cisco Routers / Switches and LAN

Cloud Environments: Amazon Web Services (AWS, EC2, VPC), Openstack, Azure

Tools: Veritas Cluster 3.x, 4.x & 5.x, HP MC Service Guard, Redhat Cluster, Sun Cluster 3.2, VMware, VERITAS Netbackup 6.0, VERITAS Storage Foundation Suite, Solaris Volume Manager, Sun Java Studio, sendmail, Splunk, Urchin, ddm, AM5, cobbler, Webmin, PGP encryption and decryption.

PROFESSIONAL EXPERIENCE

Sr. Linux Engineer/ DevOps Admin

Confidential, UT

Responsibilities:

  • Performance Tuning: Ensured that assigned systems were engineered, configured and optimized for maximum functionality and availability. Implemented solutions that reduced single points of failure and improved system uptime to 99.9% availability (up from previous high of 97.5%).
  • Troubleshooting: Rectified many issues by instituting best practices in system log analysis, backups, network operating center security, user account/permissions management and systems/software auditing.
  • Launching and configuring of Amazon EC2(AWS) Cloud Servers using AMI’s (Linux/Ubuntu) and configuring the servers for specified applications.
  • Setup up and maintenance of automated environment using Chefrecipes & cookbooks within AWS environment.
  • Automation of configuration and management through Puppet.
  • Experience installing Puppet agents and pushing Manifests/Modules to 500+ Puppet clients.
  • Maintaining Multi zone data backup on Amazon EC2, S3. Locally maintaining data archives using daily/weekly/monthly log rotate scheme.
  • Installed Puppet client software on RHEL 6.x servers and established a communication between master and client through SSL certification.
  • Installing war files on the tomcat server which is on the AWS Linux EC2 instance
  • Involved in developing custom images on Cloud using AWS images and on ESX using Templates and involved in building physical servers using Kickstart PXE Boot and Jumpstart
  • Automation using shell scripts using Pearl, Bash and Python.
  • Worked in a production support team on Redhat5.x and 6.x, SUSE Linux 10.x, hardware platforms and in VMware vSphere client 5.x virtual environment.
  • Installing, configuring and maintaining RHEL 5.x, 6.x physical and virtual server.
  • Maintenance of DELL (2650, 2850, 2950, 380 Gen 8) servers and HP ProliantGen8 servers and software troubleshooting.
  • Launching and configuring of Amazon EC2 Cloud Servers using AMI’s (Linux/Ubuntu)
  • Installing IBM MQ Queue Mangers on Linux server and routing the messages to external parties.
  • Installing TIBCO Messaging Brokers and implementing required messaging solutions such as Destination Bridging, Message Routing, Guaranteed and reliable Message Delivery, changing existing subscriptions for new requirements.
  • Leveraging the existing infrastructure for optimizing usage of resources, supporting and administering the Messaging infrastructure environment on Linux servers.
  • Build and Configure RedHat Clusters, manage Local File System and SAN Data File System under Cluster.conf, discuss with Application Areas and register the Application Services for Fail Over functionalities and transition the final working Cluster Environment (Test and Production).
  • Firmware upgrade on T2000, T5220, T5240, T5120 and T5140 and VTM patch on Solaris Servers.
  • Responsible for troubleshooting and maintenance of VERITAS cluster under Solaris 10.
  • Installation of OAS (Oracle Application Server) on Solaris 9 and its configuration with oracle database.
  • Experience working Solaris Zones/Containers and new features of Solaris 10, zone reconfiguration and file system layout modification of the containers supporting the Sybase database.
  • Disk mirroring and RAID implementation using VERITAS Volume Manager and Solaris Volume Manager.

Sr. Linux Systems Engineer /Administrator

Confidential, TN

Responsibilities:

  • Installed, configured and maintained RedHat Linux and HP-UX (RedHat Enterprise Linux 5.x, HP-UX 11i v1) on Blade Centers and VM’s using HPSA.
  • Performed Kernel upgrades on Linux Machines.
  • Deploying the Virtual machines from Template.
  • Deployed Puppet, Puppet Dashboard and Puppet DB for configuration management to existing infrastructure.
  • Planned for, tested, and then managed the upgrade of our puppet infrastructure from 0.25.4 to 2.6.6.
  • Installed VERITAS volume manager and implemented various RAID levels, logical volume creation, mirroring and file systems Creating the service accounts and installing the ssh keys.
  • Shell scripting, Perl & Python scripting for Linux/Unix Systems Administration and related tasks.
  • Setup NFS file systems and shared them to clients. Installation, Management and Configuration of LAN/WAN systems utilizing switches and routers.
  • Deployed Puppet, Puppet Dashboard, and PuppetDB for configuration management to existing infrastructure.
  • Clustering solutions for High Availability using tools such as Veritas Cluster Server (VCS), RedHat HA (RHCS), and MSCS
  • Pushing all configuration management into Chef to allow for rapid roll-out of new infrastructure
  • Deployment and management of many servers via script and chef, utilizing cloud providers as a direct substrate for implementation
  • Created scripts to automate jobs and debugging scripts for use of team.
  • Performed DNS tasks, which involves host name allocation, assigning IPs for new hosts, and cleaning up reverse DNS entries of decommissioned servers.
  • Building mkacct cluster by setting up mkacct users, groups and clients for new project related servers.
  • Responsible for creation of new application id’s and push to appropriate cluster.
  • Involved in creation/assigning of sudo rules by providing sudo access to a user on the servers.
  • Experience in Servers consolidation and virtualization using VMware converter, VMware ESX4.x/5.x, VMware Vsphere Client.
  • Migration of RHEL4.x/5.x, Windows physical servers to VMWare ESX environment using VMWare Converter.
  • Managed Apache/Tomcat for Web hosting Applications.
  • Reviewing, validating and promoting Tripwire Reports
  • 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.
  • Used Red Hat Satellite Server and Kickstart for Red Hat to deploy systems, push patches and changes to Red Hat workstations and servers.
  • Active member of Identity and Risk Management Issues which involves supervision of ftp, sftp accounts password management and enabling Unix LDAP accounts.
  • Coordinating with other teams on status reports,

Sr. Systems Engineer /Administrator

Confidential, TX

Responsibilities:

  • Installed, configured and maintained Solaris/RedHat Linux and HP-UX (Solaris 8, 9 & 10, 11 RedHat Enterprise Linux 4.x & 5.x, HP-UX 11i v1) on SPARC, x86 and Itanium server’s and Blade Centers.
  • Configured and supported Splunk Forwarders 64-bit 4.3.3 to run on Linux, AIX and Solaris client servers.
  • Virtualized Redhat servers using vSphere 4.1 and managed ESX servers using vCeneter and also worked with ESX Cluster and vMotion.
  • Virtualized servers using Solaris Zones/Containers on Solaris10, Created and maintained Wholeroot and Sparse root Zones/Containers.
  • Configured Splunk search heads on different machines for searching the data from Indexers and worked with SAP Basis team to collect different logs that are required from SAP instances and fed to Splunk.
  • Created scripts to automate jobs and debugging scripts for use of team.
  • Have experience in using protocols like NIS, NFS, SSH, SFTP & DNS and good understanding of their configuration files.
  • Administration of Websphere Application Server 6.x with Network Deployment, and Extension Deployment, on RedHat Linux. Mirroring of root disks using hw Raid Controller on HP & Dell hardware.
  • Generated PGP keys on the servers and shared with vendors for data encryption and added security when transferring files or financial data using ftp or sftp.
  • Configuring consoles of the old hardware servers in Avocent to efficiently manage the servers remotely.
  • Managed and supported 2 node and 4 node VERITAS cluster and Sun cluster and HP clusters (MC Service guard A.11.20.00) for critical SAP and JDEdwards applications.
  • Have the Disaster recovery servers in sync with the production servers in case of a system crash or Hardware failure to reduce the downtime and work with Hardware support vendor for replacing the failed parts on the server.
  • Support and co-ordinate storage team on microcode updates for array components and make sure all the servers are working as expected after the change.
  • Utilize Oracle data bases, NAS (NetApp FAS270), Red Hat 7.3 Clusters, Kickstart to automate Red Hat Installations,
  • Managed 400 + UNIX servers running RHEL, HPUX & Solaris on Oracle, HP and Dell servers including blade centers.
  • Involved in Cluster patching and Cluster failover testing and regular maintenance of the servers, taking flar images on Solaris and ignite backups on HP-UX servers every second weekend of a month.
  • Used Cobbler for installing Redhat servers and used Webmin for server administration.
  • Worked on Oracle 11g by writing few basic queries for extracting data from tables that Splunk required.
  • Installed and configured Vblock 300 series for a customer and supported UCS blade servers.
  • Fine tune kernel parameters in the Operating system to overcome the Database performance issues.
  • Use Dban (v1.3, 2.0) to wipeout the data on the disks for the servers that are being decommissioned and also co-ordinate with network team to remove IP’s from DNS server and storage team to reclaim the LUN’s that are assigned.
  • Involved in Designing and Implementing host level migrations and Virtualization using P2P and P2V. Also supported storage migrations from USP to USPV on host level without any downtime to customer (Online Migration).
  • Data migration at Host level using Red Hat LVM, AIX LVM, VERITAS Volume Manager and Co-ordinate with Network, Storage, Application and Database teams for the scheduled tasks.
  • Configured NAS devices in the environment for data transfer to the customers on LINUX and Solaris servers.
  • Configure and maintain consoles for HP (ILO 1, 2, 3) and Dell (idrac 5.0, 6.0, 7.0) servers and responsible for the licensing and updating the firmware for remote administration of the servers.
  • Managed L1 and L2 off-shore teams and coordinate the tasks with the team whenever needed and adhere to meeting SLA’s on the tickets and changes.

Systems Engineer III

Confidential, Plano, TX

Responsibilities:

  • Involved in installing, configuring and administration of Redhat Linux 4.x, 5.x, HPUX 11i V1, Solaris 8, 9, 10 servers by using Kickstart, Jump Start & Ignite servers and supported various applications running on them.
  • Migrated applications running on Solaris 8, 9, 10, HPUX to Redhat Linux environment. Worked on Patch and Package administration, installed various third party tools on servers and Mirrored root disks on all the servers by using Redhat LVM, Solaris volume manager & HPUX LVM. Installed and configured HBA cards on the servers for Fiber channel connectivity to storage.
  • Responsible for trouble-tickets, 3rd-party software installation, and user support, in a homogeneous HPUX, RHEL & Solaris environments. Involved in preparing Pre Migration and Post migration documents.
  • Worked with Open Migrator and Power Path and Data migration using Redhat LVM & VERITAS Enterprise Administration and Created LVM for Linux servers and performing actions like extending Volume group, Logical Volume and create file systems.
  • Worked on installing yum and configuring repository and Redhat satellite server on Linux servers, managing Multipathing softwares like EMC Power path, Redhat Linux Native multipathing, VERITAS Multipathing(vxdmp) and HPUX Alternative Links.
  • Worked on C7000, C6000 Blade enclosures with x86 blades and HP BL20, BL 40 generation 2, 3, 4 Blades and have good experience in rack mounting and commissioning.
  • Configuring SUDO and granting root permission to users for performing various activities. Worked on Solaris 10 - Zones, Containers, and SMF etc.
  • Installation of SSH and configuration of key based authentication, File system tuning, growing, and shrinking with VERITAS File system 3.5/4.x.
  • Installation of Web Sphere, installed related patches, configured and creating new admin & managed servers, start & stop Web sphere server.
  • Provided 24X7 support for various Production, Development and Test servers, Data Center support consisting of more than 1000 + servers.
  • Worked on HP Service Manager for Incident, Change Management and participated in Root Cause analysis of recurring issues, documented all the activities.
  • Responsible forqualityreviewsandstandards and provided24x7on-call /RemoteSupportfor UNIX Production Problems on weekly rotation basis.
  • Applying software maintenance, program fixes and keeping the system software releases current by attending the weekly status calls with the Engineering team and offshore team.

Sr.Systems Engineer /Administrator

Confidential, Dallas, TX

Responsibilities:

  • Performed system administration of UNIX servers by using Operating Systems of Solaris, HPUX and Red hat Linux Installed, configured, and maintained WebLogic and Oracle DB Servers on OS Solaris, HPUX and Red hat Linux.
  • Performed Decommissioning on Solaris & HP-UX Servers after the servers are being migrated to new hardware.
  • Very good knowledge on Advanced Virtualization on Sun Servers using Zones & LDoms.
  • Working with engineering team to build New Linux Servers and maintained various versions of Linux Servers (RHEL 4.6, 5.3, 5.6) and HPUX11i v1.
  • Set up Virtualization that includes Installation and configuration of VMWare ESX3.5 & 4.0 Server’s.
  • Worked on clustering softwares like VERITAS & HP MC Service Guard running on HPUX 11i v1.
  • Plan, design, Implementing, Installation and configuration Operating System upgrade on Red Hat Linux 4.0 on & HP-Dl585 G3& G4 servers.
  • Actively participated Disaster Recovery (DR) tests.
  • Configuring storage using Logical Volume Management (LVM), Installed Veritas Volume Manager 4.1 and created file systems, mirrored and striped volumes
  • Performed IBM Total product Storage Installation on different Operating Systems.
  • Coordination with off-shore team to implement any changes in production environment and also Involved in post-production support for solving complex issues which has high visibility.
  • Day-Day application support on production and technical documentation for critical prod issues, on call pager support 24/7 environment.
  • Worked as Unix Administrator in Infrastructure team providing server administration, application administration and automation solutions to support business objectives for various clients.
  • Responsible for Installation, Configuration, Support and Troubleshooting existing systems in Solaris 8,9 / 4.5/5.1L, Red Hat Enterprise Linux operating environment
  • Worked with one of the largest VMware and RHES V3 installations.
  • Instituted centrally managed Linux configurations for application deployments, disaster recovery and responsible for customer and advisor facing web services with a volume of 4 million hits per day.
  • Configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager (LVM) commands.
  • Maintained availability, increased capacity & performance of production machines by upgrading their hardware (disks, CPU, memory, Io board, power cooling unit, mother board etc) & firmware.
  • Successfully tested and documented the alternate disk install procedure to clone OS. Maintained system security protecting the data on the system by modifying the file and directory permission. Analyzed system performance, Reallocated of kernel resources and Performed process automation, scheduling of processes using CRON jobs.
  • Worked in the project of configuring NIS Servers (Master and Slave) and NIS clients and maintained system and custom configuration files in NIS maps.
  • Maintained intranet DNS environment by configuring Primary and Secondary Domain Name Servers and DNS clients.

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