SUMMARY:

• Working in IT over 9+ years as Systems Administrator/Engineer on various NIX platforms that include RedHat Linux, CentOS, SUSE Linux, Solaris, AIX, HP - UX and Windows . Experience on physical, virtual and cloud environments in various business domains. Configuration management and Automation of systems and applications with Chef, Ansible using scripting languages such as Bash, shell, Ruby, Python. Worked on AWS cloud and VMware virtualized environments.
• Expertise in various system administration tasks such as installations, configurations, maintenance of RedHat Linux 4.x,5.x,6.x, CentOS 5.x, 6.x, OEL 5.x, 6.x, Solaris 9.x, 10.x and AIX 4.3, 5.x, 6.x, 7 and Microsoft Windows NT 4.0, 2000, 2003, 2008, 2012.
• Well experienced in automated and manual installations of operating systems using Kickstart, Jumpstart, JET, NIM, Ignite methodologies.
• Lead projects including server builds, migrations such as OS migrations, Application migrations, and Storage migrations.
• Designed and implemented Ansible in the environment of nearly 4000 physical and virtual servers.
• Designed and deployed high available, fault tolerant, scalable, secure applications in Amazon Web Services comprising of EC2, EBS, S3, VPC, RDS.
• Managed application configurations on EC2 using OpsCode Chef.
• Good experience with Disaster Recovery techniques using AWS CloudFormation templates, R53 failover policies and VMware SRM.
• Experience with various version controllers like SVN, Github, Bitbucket in adds, commits, deletes of files, codes into dev, qa, test, prod branches.
• Local and external storage experience - LVM, VxVM, and SVM on RAID configured devices in EMC, NetApp, Hitachi SAN environments.
• Capacity planning, batch flow, storage expansion, storage creation and presentation as well as all zoning activities on the Brocade Fiber Channel switches
• Installed 50+ AIX 6.1 images on virtual clients LPARs using NIM master.
• Daily, weekly backups, running system backup using mksysb, Volume group backups with savevg. Disk and volume management Redhat Linux & AIX LVM . Replacing faulty physical volumes from rootvg or other user defined volume group.
• Monitoring experience - Configuration, troubleshooting and monitoring using Splunk and Nagios.
• Good at user and group administration such as password less login setup, SElinux, LDAP and local access, sudoers.
• Experience with VMWARE ESX 3.5, 4.0 and vSphere 4.1 servers on Dell PowerEdge and HP Proliant Hardware running RHEL and AIX environments
• Performance troubleshooting, tuning, testing on operating systems, applications, networks, storage using top, sar, strace, tcpdump, sysctl.
• Monitoring the hosts and networks using Iostat, VMstat, MPstat and Other Tools.
• Worked on HPUX migration using native LVM and EMC products like EMC Power path.
• Day to day activities including service delivery of planning, organizing, evaluating, troubleshooting, installing and tuning of multiple large Linux systems in a centralized data center environment.
• A good team player with strong communication skills and an inquisitive mind to learn more.

TECHNICAL SKILLS:

Operating systems: AIX 5.2,5.3,6.1, Solaris 8,9,10,11, Redhat Linux 4.x,5.x,6.x, HP-UX 11.11,21,31 and Windows 2k/2k3/2k8, VMware ESX Server 4.x/5.x

Hardware: DELL PowerEdge 1650,2850,2950,6400, HP DL320,DL360,DL380,DL580, HP rp3440, rp 4440, rp5470 & rp8400, rx3600, rx 6600, Compaq ProLiant DL 385,585

Server Management: Ansible, Chef, VxVM

CM Tools: JIRA, Confluence, Artifactory, SVN, Maven, Jenkins, ANT, Git, GitHub

Programming Languages: C,C++,java, JavaScript, HTML, KSH, CSH, Bash, Phyton and Perl programming

RDBMS: Sybase, Oracle 7.x/8.0/9i, MySQL,SQL, Amazon Web Services (AWS)

Networks: NIS, NFS & DNS and Firewalls

Protocols: TCP/IP, FTP, SSH, SFTP, SCP, SSL, ARP, DHCP, TFTP, RARP, PPP and POP3

Monitoring tools: Nagios, Splunk, AWS CloudWatch

WORK EXPERIENCE:

Confidential, Austin, TX

Linux SME/ Devops Engineer

Responsibilities:

• Installing, Managing & troubleshooting all the issues on 50,000+ critical Trading production, development and QA servers.
• Worked as part of a distributed team of 3 tasked to iterate on Ansible's IT Automation web client (Tower).
• Interacting directly with Clients for getting work window for maintenance works and clarifying their doubts if they raise any as part of seeking window.
• Built Ansible Tower That supports playbooks stored directly on the Tower server .
• Mastery of build technologies like Hudson, Jenkins, Ivy, Maven etc, Integration and automation of source control applications like Perforce, Subversion, Git, Artifactory .
• Setting up new “forks” on a job template to larger values to increase parallelism of execution runs.
• Creating Continuous Integration system, such as Jenkins, to spawn an Tower job.
• Experience Came up with a Continuous Delivery platform and refrecne implementation to provide a complete working Continuous Delivery solution using industry-standard open source tools such as Jenkins, Ansible, Chef, Capistrano, Ruby, Maven, git, Java, etc
• Evangelism of best practices and tools and Programming/scripting skills using tools like shell scripting, Python, Groovy, Powershell with Strong communication and cross-functional skills and the ability to execute autonomously given a set of clearly defined strategies
• Created Role-Based Access Controls (RBAC) are built into Tower and allow Tower administrators to delegate access to server inventories, organizations, and more.
• Replacement of H/W (Motherboard, Memory, Media-Drives, NIC Cards, PSUs, Mellon ax cards, Fusion cards and HBA..etc) by coordinating with onsite team/vendor.
• Working with various software and hardware vendors to fix various issues and regularly following up with them for RCA and updating the same to clients.
• Pushing the configurations and setting up the huge jobs via Blade Logic
• Performing various Firmware upgrades such as UEFI, IMM,OBP,LOM and HBAs
• Administration of Veritas Volume Manager and Veritas Cluster issues.
• Adding / removing new LUNs and creating the new file systems or increasing the existing file systems using these luns in Solaris and Linux.
• Root cause analysis after Panic/Dump/Crash related to Linux and Solaris by co-coordinating with Vendors for permanent resolution
• Actively participating in a high uptime server reboots project.
• Currently working on a automation project which keeps the server In Maintenance mode before it goes for reboot(working with Mips team)
• Attending the weekly call’s with LOBs and I’m one of representative from L2 team and cascading the information to colleagues when required and keep getting their issues and getting clarification from onsite managers
• Documentation of all the setup procedures and System related Policies (SOP’s).
• Excellent ability to handle significant workload with experience in managing multiple projects concurrently in a demand environment.

Environment : RedHat 6/7 on X86 servers, VMWARE 3.5 and vSphere 4.x/5.x, EMC PowerPath, VMware ESX Server 4.x/5.x, Phyton and Ruby programming, JBoss, Bamboo, stash, Git , Jenkins Build Management Ant, Tortoise SVN, HP Blade Center servers.

Confidential, Austin, TX

System Admin/Devops Engineer

Responsibilities:

• Installed and configured of hardware and Linux like HP-UX and RHEL 5/6 on x86 servers.
• Build servers, configured, installed tools, installed patches and transitioned servers to production support.
• Experience supporting Redhat Cluster and Oracle RAC environment running Oracle databases in High Availability.
• Experience creating and managing HP Proliant DL G4, G5, G6 & G7, and C7000 Blade Centers.
• Migrated Linux servers from physical servers to HP Hellion virtual servers.
• Involved in setting up Linux server with JBoss, Bamboo, stash, Git.
• Improved monitoring with Nagios and custom plugins.
• Designed and implemented Nagios installation for monitoring of servers.
• Responsible for doing code review and configuration build management using Ant, Maven.
• Configure dynamic and static network settings for IPv4 and filter packets , Review file system management concepts, and removable media and configure NFS shares with AutoFS .
• Manage file systems using Software RAID and recover an array, Manage file systems using Logical Volume Management , Resize file systems and protect them with LVM Snapshots.
• Experience in automation using scripts in Perl and also shell (bash and korn).
• Experience supporting single sign on authentication using LDAP on Linux environment.
• Configured Kick-start servers to install Red Hat Linux and VMWare ESX on multiple machines.
• Experience configuring LDAP clients and performing activities like user administration using LDAP.
• Involved in virtualization with VMWare ESX vSphere 4.1 and created VM’s and performed P2V and P2P migrations and involved with Solaris 10 Virtualization using LDoms and Zones.
• Installed patches to latest patch level, applied patch cluster and installed software packages as needed.
• Experience working with Java applications like Weblogic, Websphere and JBoss and performing JVM installations and upgrades in web logic environment.
• Experience installing Puppet agents and pushing Manifests/Modules to 500+ Puppet clients.
• Upgraded of Puppet master server from 2.x to 3.x version on servers and clients.
• Installed VERITAS Volume Manager and Powerpath on Red hat Linux servers.
• Security implementation through ACL, RBAC and TCP Wrappers.
• Installing, configuring, and administering DNS, NFS, NIS, Mail servers, FTP servers RPM servers on Red Hat Linux platforms.
• Strong scripting knowledge (Perl and Shell) to perform different administration tasks.
• Experience in Shell scripting (ksh, bash) to automate system administration jobs
• Mentoring junior team members to support production web environment.
• Setting ulimitparameters and handling the job schedulers.
• Performed volume management tasks like mirroring using SVM , Veritas Volume Manager 4.x/5.x and HPUX LVM.
• Worked on Grub, PXEboot, Kickstart, Packages, Yum, RPMs, LVM, BootfromSAN, filesystem configuration.

Environment : RedHat 5/6 on X86 servers, VMWARE 3.5 and vSphere 4.x/5.x, EMC PowerPath, Puppet 2.x to 3.x SYMCLI 7.x, SMC 7.x, VMware ESX Server 4.x/5.x, Phyton and Perl programming, JBoss, Bamboo, stash, Git , Build Management Ant, Tortoise SVN.

Confidential, Jersey city, NJ

System Admin/Devops Engineer

Responsibilities:

• Installation, Administration and Maintenance of Red Hat Enterprise, CentOS on VMs and physical Servers
• Prepared, arranged and tested Splunk search strings and operational strings.
• Responsible for Administration, Installation, Upgrading, Migration, Configuration, Troubleshooting, Security, Backup, Disaster Recovery, Performance monitoring and Fine-tuning of UNIX systems on different OS levels.
• Supported several Servers in Dev, QA, Staging and Production environments plus primary support to all kind of issues for Redhat 5.x & 6.x Linux and VMware .
• Installing and upgrading patches and packages on RHEL 5.x, 6.2 and 6.5 servers using RPM, YUM and third party software applications
• Installation, Configuration and Administration of VM's in VMware ESXi 5.0,5.1 and also patch management and troubleshooting of VMware, and ESXi Servers and migration of VMs and data storage, snapshot and templates and clones
• Installation of SSH and Configuration of Key-Based Authenication .
• Developed utilities in perl, including templates and configurations for Nagios , MRTG , and basic system configurations. Wrote custom plugins for Nagios .
• Handled the VMware solutions to support multiple storage connectivity options such as FC-SAN, iSCSI, NFS (NAS) and internal storage .
• Managing and supporting a multi-cloud environment which includes AWS, GCE and Azure
• Building servers by kickstart through PXE and deploying applications.
• Writing/Modifying Manifests and applying them on the nodes using Puppet
• Implemented continuous deployment system with Jenkins, AWS : Code Deploy.
• Configured Kick-start servers to install Red Hat Linux and VMWare ESX on multiple machines.
• Ldap integration with Vmwarevcenter Single Sign On
• Building/nukeingNetapps and managing the aggregates and volumes on the Netapp Cluster
• Creating/resizing volumes, preforming volume level data copy using ndmpcopy and snap mirror
• Troubleshooting various production related outages .

Environment : RedHat ES3/ES4/ES5, VMWARE 3.5 and vSphere 4.x/5.x, EMC PowerPath, SYMCLI 7.x, SMC 7.x, VMware ESX Server 4.x/5.x, Phyton and Perl programming, CRON, EMC legato Networker.

Confidential, Woonsocket, RI

Sr Linux Administrator

Responsibilities:

• Provide onsite and remote support for Redhat Linux & AIX Server's .
• Provided 24x7 on call server support for UNIX environment including AIX, Linux, HP-UX, and Sun Solaris.
• Setting up and administering DNS system in AWS using Route53
• Manage relationships between large collections of AWS machine images
• Responsible for designing the loadable path control module for in the multi path configuration.
• Performed migrations of virtual servers from Ubuntu OpenVZ physical servers to AWS EC2
• Configured HP ProLiant, Dell PowerEdge, R series, Confidential UCS and Confidential p-series 550,570,590,595,690 machines , for production, staging and test environments.
• Administration,installation,upgrade and maintenance of HP ProLiant DL 585 G7 using Redhat Enterprise Linux jumpstart, flash archives and upgrade method.
• Experience with provisioning Linux using Kickstart and Redhat Satellite server.
• Extensively used NFS, NIS, DHCP, FTP , Send mail, and Telnet for Linux.
• Good understanding of Security,OSI Model, TCP/IP protocol suite (IP, ARP, ICMP, TCP, UDP, RARP, FTP, TFTP)
• Installation and configuration of LPAR's with AIX 5.3 , 6.1 on p5 servers.
• Experience in Installation, Configuration and Troubleshooting of Tivoli Storage Manager (TSM ).
• Remediating failed backups, Take manual incremental backups of failing server's.
• Upgrading TSM from 5.1.x to 5.3.x.Worked on HMC Configuration and management of HMC Console which included up gradation, micro partitioning.
• Installation and troubleshooting of Confidential Director and Tivoli Endpoint
• Monitoring the hosts and networks using NAGIOS, Iostat, VMstat, MPstat and Other Tools
• Manage software on system using YUM, and RPM.
• Installing & configuring Oracle Enterprise Linux for Oracle Database Server with RAID Partition..
• Coordinating with SAN team for allocation of LUN's in order to increase filesystem space.
• Configuration and administration of Fiber card Adapter's and handling AIX part of SAN .
• Administration of multiple AIX machines, AIX clusters, and SP nodes from any client platform through WebSM.
• Good LVM skills, used LVM , created VGs, LVs, and disk mirroring.

Environment : RedhatLinux 4.x/5.x/6.x, AIX - 5.3/5.2, SUN Solaris 10/9/8, Win 2003/2000, HP-UX 11.i, vSphere 4.1, Confidential p-series 550,570,590,595,690, AWS EC2.

Linux/AIX Administrator

Confidential, NC

Responsibilities:

• Responsible for installation, troubleshooting and maintenance of 1800 Redhat/SUSE servers and 1000 servers running Solaris 10/11 on x86 and SPARC.
• Designed and managed AIX related operation systems, SAN infrastructure along with the necessary upgrades.
• Configuration, management, and support for advanced AIX functionality which includes: Power HA, NIM, NPIV, GPFS, WPAR .
• AIX LPAR Virtualization installation and configuration, research, automation, and standards, for systems using HMC/VIOS (vscsi and NPIV). (AIX on large frame P-series: p5, p6, p7) .
• Configuring interfaces, new devices installation and configuration. Removing the device and working with ODM entries that are related to devices.
• Maintained availability, increased capacity & performance of production machines by upgrading their hardware (Disks, CPU, memory, I/O board, power cooling unit, mother board etc.) & firmware.
• Involved in implementing Security by implementing IP Tablesm, SSH root login disabling , PAM Authentication, disabling services and ports on Linux and Solaris servers.
• Set up Netsaint (now Nagios) to use escalation and email paging triggers.
• Experience Virtualizing Redhat servers using vSphere 4.1 and managed ESX servers using vCeneter and also worked with ESX Cluster and vMotion.
• Experience working in Cloud infrastructure using Hitachi/EMC SAN and HP Blade Center servers .
• Installed and Configured Redhat Linux and Solaris and booting from SAN .
• Worked with Confidential X series , HP DL , BL and Dell Power Edge Model servers .
• Configuring different RAID groups assigning different RAID levels in EMC Storage .
• Supported and managed Confidential pseries servers (P5/P6/P7) using HMC version 6 and 7.
• Migrated different applications like SAP & Databases like Oracle from HPUX to Linux .
• Implemented security methods using security hardening techniques like software patching to minimize the known vulnerabilities, OpenSSH, TectiaSSH, PKZIPc for secure logging and transmission of data and sudosh for auditing.
• Deployed Puppet , Puppet Dashboard , and PuppetDB for configuration management to existing infrastructure.
• Installed and Configured Apache Http/Https server for secure web server communications using TLS/SSL protocol suite.
• Managed 100 + UNIX servers running RHEL , HPUX on Oracle HP and Dell server including blade centers.

Environment : AIX 5.3/5.2, SUN Solaris 10/9/8, Win 2003/2000, HP-UX 11.i, SYMCLI, ECC 5.2, NavisecCLI, Navisphere Manager, Webtools, Brocade, Power Path, vSphere 4.1, TLS/SSL protocol suite, Hitachi/EMC SAN.

Confidential

Linux System Administrator

Responsibilities:

• Administered a heterogeneous environment comprising Red Hat Linux and Solaris with emphasis. Administration involved installation, configuration, evaluation, implementation and support of strategic Business systems in a heterogeneous environment.
• Expert in Kickstart and Jumpstart for Linux and Solaris Installation Methods
• Worked on SAN & NAS devices like EMC Clarion’s , and NAS Devices like NetApp filers .
• Worked on NetApp filers like FAS 3240 & 6070 running DATA ONTAP 7.x.
• Involved in applying Patches, Installing patch bundles on Solaris, AIX and Red hat Linux .
• Configured VMware and installed several Linux and Windows Operating Systems according to the client needs. Also involved in maintenance and Troubleshooting of VMware
• Network Monitoring Using Nagios tool
• Upgraded Red Hat Linux servers from 5.2 to 5.4 .
• Deployed patches and upgraded RedHat Linux servers and SUN servers to their latest versions.
• Scheduling Backups, Monitoring & taking failover test of Veritas Clustered servers
• Experience in Installation and configuration of JBOSS on Red Hat Linux servers.
• Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets
• Experience in Servers consolidation and virtualization using UML Linux, XEN and VMware virtual infrastructure, VMware ESX 2.x, VMware Vcenter .
• Developed automated processes that run daily to check disk usage and perform cleanup of file systems on UNIX environments using shell scripting and CRON.

Confidential

Linux/Solaris Administrator

Responsibilities:

• Installation, Configuration, Upgradation and administration of Windows, Sun Solaris, RedHat Linux and Aix.
• Worked on Linux Kick-start OS integration, DDNS, DHCP, SMTP, Samba, NFS, FTP, SSH, LDAP integration.
• Network traffic control, IPSec, Quos, VLAN, Proxy, Radius integration on Confidential Hardware via Red Hat Linux Software.
• Worked with Net filter IPtables for host-based security firewall rules, Pre-Routing and Post-routing rules.
• Implemented remote installation on servers using RedHat Linux Kickstart and jumpstart/JET Servers.
• Installed and configured RedHat softwares and 3 rd Party tools using RPM’s and YUM on RedHat servers.
• Worked with Linux Security extensions like SElinux in both enforcing and permissive modes to guard misconfigured/compromised services.
• Kernel tuning, Writing Shell scripts for system maintenance and file management.
• Worked on Logical volume manager to create file systems as per user and database requirements.