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Infrastructure Engineer/linux System Administrator Resume

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Seattle, WA

SUMMARY:

  • Over 12 years of IT industry experience in System Administration on Red Hat Linux, Sun Solaris.
  • Expertise in Installation, Configuration and administration of Red hat Linux 5x,6x, 7x Solaris 9,10
  • Red Hat Linux - based Virtualization implementations such as VM Ware and AWS.
  • Worked on VMware virtual environment ESX, ESXi, vCenter, vSphere and vCloud environments.
  • Experienced in supporting database systems including Oracle and RAC on Red Hat Linux/Unix.
  • Was involved in creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.
  • Experience in setting up a PXE boot environment with Red Hat Linux.
  • Expertise in Veritas Volume manager (VxVM), creating new file systems, mounting file systems and un mounting file systems
  • Planning, documenting and supporting high availability, business persistence, fail-over, fail-back using Veritas Cluster Server.
  • Expertise in implementation and maintenance of DHCP, NFS, NIS, DNS and SMTP.
  • Configured Monitoring using Tivoli and Splunk.
  • Experience in using Symantec Net Backup, Proficient in system backup and recovery from tapes using tar and cpio, file system administration.
  • Configured Network Concepts DNS, NIS and DHCP, troubleshooting network problems such as TCP/IP, providing support for users in solving their problems
  • Worked on Networking and communication devices, Server Utilities, TCP/IP, FTP.
  • Performing troubleshooting production issues, root cause analysis and preventive actions. Excellent problem resolution and communication skills with ability to work under pressure in a highly visible role.

PROFESSIONAL EXPERIENCE:

Confidential, Seattle, WA

Infrastructure Engineer/Linux System Administrator

Responsibilities:

  • Installation, configuration and Operating System upgrade Red Hat Linux 6.x in virtual environment.ESX 5.1
  • Provided operational support to various teams on Linux 6.x & 7.X.
  • Involved in designing and deploying a multitude applications utilizing almost all of the AWS stack (Including EC2, Route53, S3, SQS, IAM) focusing on high-availability, fault tolerance, and auto-scaling.
  • Migrated the current Linux environment to AWS/RHEL Linux environment and used auto scaling feature.
  • Increasing EBS backed volume storage capacity when the root volume is full using AWS EBS Volume feature.
  • Created AWS Route53 to route traffic between different regions.
  • Created S3 backups using versioning enable and moved objects to Amazon Glacier for archiving purpose.
  • Assigned users and groups using IAM and individual policies to each group.
  • Created SNS notifications and assigned ARN to S3 for object loss notifications.Migrating Datacenter Linux servers to AWS Cloud.
  • Configured volume management using LVM.
  • Worked with various DBA’s in setting up database on AWS environments
  • Migrated Datacenter Application to AWS and made sure the customer facing application are up and running
  • SENDMAIL configuration and administration, testing the mail server.
  • Installed, Configured and working with Splunk software which gives the system log information in timely manner which helps us determine the health of system
  • Wrote Exclusive bash scrips for automation purpose.
  • Red Hat Linux kernel, memory upgrades and swaps area increase.
  • Configuring DNS, DHCP, NFS in servers.in luesiled enviornment
  • Troubleshooting of various server,storage,network issues and often followedup with RedHat Inc by opening tickets for critical issues.
  • Setup various user profiles, environment variables/security to ensure smooth operation.

Confidential, Irving, Tx

Infrastructure Engineer/Unix System Administrator

Responsibilities:

  • Delivering the OS support to critical servers running Database and Applications on LINUX and Solaris.
  • Up-gradation, Configuration, Maintenance, Patch /Package management and Troubleshooting of the Operating Systems and Services .
  • Patch management using Yum repository & TPM.
  • Red Hat OS upgrades & Migration on 5.X & 6.X
  • Installing latest OS and VTM patches to keep the latest and most up to date software configurations.
  • Installation and configuration of Oracle RAC 11g on Red Hat Linux cluster nodes.
  • Managing users, groups, hosts and file systems.
  • Hardware Maintenance and coordinating with Vendors accordingly like HP, SUN, IBM and Symantec for all VERITAS product issues.
  • Involving in Hardware replacements like disks, memory D IMM, CPUs and PS units.
  • Configured volume management using LVM and SVM .
  • Configured VCS service groups, resources and new file systems.
  • Adding and removing the cluster nodes from the VCS control.
  • Application software installations upon clients request.
  • Automating Jobs Using the cron and at.
  • Performance monitoring and troubleshooting .
  • Day-to-Day Administration upon client request based on the predefined process.
  • Communications with business units for maintenance and scheduled outages.
  • Giving the capacity reporting for the Production Service lines on weekly and monthly basis to the business to take necessary remedial actions in case of performance issues in PROD servers .

Confidential

Infrastructure Engineer/Unix System Administrator

Responsibilities:

  • As part of MCM team: This includes assign the IP, updating MAC information, build the Linux and Solaris boxes .
  • Installing and configuring VCS cluster, configure SAN disk for Standalone hosts using VXVM and signoff hosts.
  • Ensure that SLA's are maintained while handling the ticket requests without any issues.
  • Responsible to ensure makes proper and timely entries into the various on-line reporting systems designed to collect performance metrics for the team.
  • Regularly updating the status with the right information, escalating the issues to different levels like Level 3, H/W, SAN teams etc., to ensure high quality work products and processes.
  • Checking the issues with the team task that is being completed, before updating the client to avoid any issues and rework.
  • Installed and Configured Solaris 9 and 10 on Sun Enterprise servers, Sun Ultra Sparc servers.
  • Installed and Configured Red Hat Linux on IBM, HP and Dell servers.
  • Installed Veritas Volume Manager on Solaris. Implemented RAID 0, RAID 1, and RAID 5 in the systems.
  • Created vmdisks, plexes, and volumes using the volume manager according to the requirements. Replaced failed disks using vxdiskadm.
  • Wrote Shell Scripts to perform routine tasks like selective file removal, maintaining log list, disk space utilization & process management.

Confidential

System Administrator.

Responsibilities:

  • Involved in the set up of LAN with WINDOWS NT4.0, 2000, 2003, LINUX, SUN SOLARIS with databases Oracle8, Oracle8i, 9i, 10g.
  • Involved in integration of .net with SQL databases. Involved in installation of Oracle9.2.0.1 in Linux and Web logic 8, DB2 8.2, Web Sphere 5.1 installations in Windows system as a part of our training and development program with Intel Servers.
  • Heterogeneous LAN Configuration between Solaris, Linux and Windows using Telnet.
  • Device Management, Scheduling Events & Regular Backups, File system Security, Reporting of Log Messages, Patch, Package Management.
  • Performed Custom Jumpstart Installation over network and maintained Install server, Boot server, and Profile server. Wrote various post installation scripts.
  • Performed Kick start installation over the network & also configure the DHCP Server. Wrote various post installation script.
  • Setup NFS Servers, Diskless clients and Auto clients and auto mounted the file systems using direct and indirect maps.
  • Monitored the performance of the system using top, vmstat, netstat, nfsstat, rpcinfo and iostat to check the cups utilization, bottlenecks of I/O devices, Memory usage & Network traffic.
  • Used Solaris Volume manager and created metadevices, metamirror, and maintained root disks under Solaris Volume manager control. Attached additional disks to overcome the lack of disk space using metaattach.
  • To troubleshoot network connectivity, used ping, Arp, ifconfig, rpcinfo and traceroute commands.
  • To login to the remote system, used rlogin, telnet. To transfer files across the systems on the network used ftp and rcp commands.

Confidential

System Administrator

Responsibilities:

  • My responsibilities involved Maintenance, Installations and trouble shooting of Windows 2000, Networks, solving technical problems, both in hardware and software.
  • Involved in maintenance and technical support in Windows 2000 and other OS.
  • Involved in the setup of LAN with Windows 2000 with databases Oracle8, Oracle8i, 9i and also involved in integration of Vb 6.0 and .net with SQL databases.
  • System Security, Reporting of Log Messages. Configuring Dial-up Networking, Modem Installation, Proxy Server Installation & Administration, LAN Administration, and Intranet Administration. Installation, Configuration of Client Servers with Windows workstations

Confidential

System Engineer

Responsibilities:

  • My first job started as a System Engineer.
  • I was leading a team which includes Hardware Engineers and System Engineers to setup LAN based networks, providing with service support for our large-scale client circle over Chennai.
  • We supported the clients for all branded Hardware and all peripherals.
  • My responsibilities involved Installation, Maintenance and Trouble Shooting of Windows NT Networks, solving technical problems faced in the design and Implementation of the networks at the Client sites.

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