SUMMARY

• Over 8 years of experience as a Linux/Unix System Administrator, Devops with Sound knowledge of Servers.
• Specialized in System Administration working on Red Hat Linux, Ubuntu, Solaris, Unix, AIX, CentOS, Fedora, OEL, Windows environments, VMware VSphere.
• In depth knowledge in Source Code Management tools such as SVN, GIT, RTC, TFS, CVS and VSS.
• Primary duties include Build and Deployment of applications onto different environments like Dev, QA, UAT and Production. Analyze and resolve compilation and deployment errors related to code development, branching, merging, and building of source code.
• Experience in Installing, upgrading and configuring Red Hat Linux 5.x, 6.x and 7.x and Debian using Kickstart Servers.
• Experienced in installation, configuration, administration, troubleshooting, tuning, security,backup, recovery and upgrades of IBM AIX, Solaris 2.x, 8, 9, 10, HP - UX 10.x, 11.x, WinNT/2000 Server, Linux (Red Hat & SUSE).
• Experience in build, maintaining & troubleshooting AIX and Security patching.
• Building software packages on Red Hat Linux (RPM).
• Extensively worked on Hudson/Jenkins, Docker, Team City and Build forge for continuous integration and for End-to- End automation for all build and deployments.
• Extensive experience in production environments, involved performance tuning, tweaking the JVM parameter, Threads, size of the connection pools.
• Extensive experience writing Puppet recipes building server environments and pushing server configuration changes
• Extensive experience working with configuration management tools such as Git, Apache Subversion (SVN).
• Expert in Power HA migrations from different versions in different methods.
• Expert in Setting and bringing up the target boards (Hardware) like Intel, PPC and MIPS architecture setting them in the net racks.
• Experienced with AIX OS Migration from version 5 to 6.1 using Alt disk as a best practice.
• NIM (Network Install Management) set up, performing a NIM installation, troubleshooting.
• Experienced with NPIV configuration in the VIO environment.
• Setting up the Jboss, Weblogic, oracle, DB2 connect, WebSphere, MySQL, Tomcat, Apache,
• Active Directory in Microsoft, sun, Linux and Kerberos server.
• Excellent debugging skills and troubleshooting network related issues both on Ethernet and fiber.
• Preparation of Logical Volume Manager (LVM) with new san luns, LUN online migrations using pv move and LV mirror commands on Linux servers. Having good experience in Red Hat, EMC storage devices, Disaster Recovery like data Recovery, Hitachi storage devices and VERITAS Netback up version 6.
• Experience in configuring AIX security settings, scalable infrastructures for HA (High Availability) and disaster recovery Good knowledge on configuring and administrating VERITAS cluster.
• Experience in integration of various data sources like Oracle, DB2, MYSQL, SQL server and non-relational sources like flat files into staging area. Excellent in System performance tuning Configuration
• Sound understanding of IT Infrastructure Administration with project management tools like Cherwell and RFC.
• Experience in configuration and testing Disaster Recovery Site using Storix and HP-Data protector tools.
• Expertise hands on experience in shell script automation and PERL Programming.

TECHNICAL SKILLS

Hardware: SUN Enterprise- E 5000/5500/6500 , SUNFIRE 3800/4800/6800 , E10K/15K Series Servers, HP-9000, rx8640, rp7420, rp8420, N-Class, L-Class, D-Class, K-Class, IBM e-Server Regatta P690, P570, RS6000, IBM/HP/DELL Blade Servers, SAN(EMC, Hitachi), NAS (Netapp)

OS: Solaris 10/9, HP-UX (11.00, 11.11, 11.23, 11.31), IBM AIX (5.1, 5.3), Red Hat Linux (RHEL 4/5/6), Windows NT /2003/vista

Naming Services: DNS, NIS, and NIS+

Backup Management: Veritas Netbackup 4.x/5.x/6.x, Ufsdump, ufsrestore, tar, dd, cpio

Script Languages: Shell scripts, Perl, Ruby

Web Technologies: Apache 2.x/3.x, IPLANET 4.x/5.x, WEBLOGIC 8, Websphere 4.0/5.0

Storage: SAN, EMC Symmetrix / Clarion, iSCSI, SNAP, NAS, DAS

ThirdParty Software: VERITAS Volume Manager, LVM, LDAP, SSH, Puppet, Chef, Jenkins

Cluster: Veritas Cluster Server (VCS), Sun Cluster, HP Service Guard, AIX HACMP

RDBMS: Oracle, MS SQL Server

Protocols: NetBIOS, NetBUI, SMTP, SNMP, ICMP, TCP/IP, FTP, TELNET, UDP & RIP, DNS, WINS, DHCP.

Antivirus: Symantec Antivirus Corporate Edition, Trend Micro Messaging Suite for Exchange, MacAfee Virus Scan Engine 7.1 / 8i, AVG (Grisoft)

Remote Access Tools: Terminal Services, Net Meeting, Web - Ex, PC Anywhere & VNC for Windows Servers.

PROFESSIONAL EXPERIENCE

Confidential, OR

Sr.Linux System Administrator/Devops Engineer

Responsibilities:

• Installation, Maintenance, Administration and troubleshooting of RHEL 6.x,7.x on existing server environment.
• Performed automated installations of Operating System using kickstart for Linux.
• Responsible for building of new servers which includes rack mounting, installation of OS, configuring of various OS-native and third party tools, securing of OS, installing & configuring, job scheduling.
• Participated in the release cycle of the product, which involves environments like Development, Itest, QA and UAT.
• Implementing new projects builds framework using Jenkins & maven as build framework tools.
• Developed and implemented software release management strategies for various applications according to agile process.
• Build scripts using ANT and MAVEN build tools in Jenkins to move from one environment to other environments.
• Configuring and managing the SSH, SSL, NFS, FTP, SAMBA, SMTP and DHCP Servers on Linux.
• Extensively worked on hard disk mirroring and stripe with parity using RAID controllers.
• Worked extensively on backup tools Storix and HP-Data protector which is widely for migrating clients at an easier modular fashion in an minimal time and for effective backups.
• Configure, Manage HA and DRS enabled ESXi Clusters and troubleshoot vm’s that have memory ballooning issues.
• Working with multiple vendors EMC, Cisco, VCE, VMware for designing, setting up Private Cloud Infrastructure based on Vblock, vSphere, NSX, EMC VNX, EHC and Cisco UCS, Nexus platforms.
• Used puppet manifests to manage Server’s sudoer’s file across 1000 servers.
• Worked on the configuration and troubleshooting of printers using CUPS(Common Unix Printing System) and HP Spooler.
• Installed and Configured Jenkins for CI/Automation tool with plugins and also created jobs.
• Administered Jenkins for Continuous Integration and deployment into Tomcat/Weblogic Application Servers, testing in build environment and release to test team on scheduled time.
• Worked on Science logic Monitoring tool to manage filesystem alerts or failures in pinging servers.
• Worked on Datacenter migration project, where we have migrated more than 3000 linux vm’s and 600 physical servers(including hp-ux and solaris) in Portland datacenter.
• Got good expertise hand on operating RHEL 7.x servers as we have dealt extensively with migrating servers from RHEL 5.x to 7.x by coordinating with customers.
• Performed all the Storage Operations like adding Devices, BCVs mounting BCVs on DR host.
• Resolved several EMC storage related issues like director failure, VHBA addition on Host side.
• Performed NIC Tuning by increasing its TCP, integrating with SAP packet analyzer tools to improve bandwidth and latency .
• Experience with automating deployment of artifact using CI tools.
• Managing Daily Builds, Weekly Builds, Nightly Builds and Builds on fortnight basis, Used Remedy as deployment issue tracking tool.
• Installation and configuration of Veritas Volume Manager, LVM, Veritas File System and Veritas Cluster Server.
• Performed all the SAN related work using EMC symmetrix, SRDF and BCVs.
• Built virtualized Linux servers on ESX and blade servers to host multiple applications on same chassis across different server hosts
• Set up Linux servers for iSCSI LUN boot instead of using local hard disks
• Set up Sun servers for SAN-through-FCP boot as against booting from internal hard disks
• Set up Linux servers for LAMP implementations and readiness increasing scope for linux security.
• Created File systems from local storage as well as NFS partitions for application portability
• Applied patches and packages on Linux servers using rpm RedHat Package Manager and yum tools
• Administered and supported the SAP Production, Quality and development systems in a 24x7 in an environment consisting of Oracle 9i, Sun Solaris 9 and EMC Symmetrix SAN Storage.
• Providing day-to-day user administration like adding/deleting users and managing users queries. Shell programming for routine administration tasks. Analyzing & monitoring system performance through various system tools such as netstat, iostat
• Creation and scheduling of Cron Jobs such as for Backup, System Monitoring and removal of unnecessary files

Environment: RHEL 5.x,6.x,7.x, Windows NT, Ultra Enterprise 2/1 Servers,SAN, SPARC server 1000, SPARC server 20 Enterprise Servers, Vsphere 5.x,Vmware ESX hosts,Vcenter server and services, Vrops, Sun Sparc Ultra 1,5,10, ZFS, QFS and Veritas File System 3.0, clustered nodes, puppet 3.x, GIT, Docker,AWS.

Confidential, Providence, RI

Sr.Linux Systems Administrator /Devops Engineer

Responsibilities:

• Worked as a Linux/Solaris Administrator for New Projects and Supervising the Linux/UNIX Support team.
• Maintaining the server farm of around 500 + Solaris, HP-UX, AIX and Linux servers and resolving the trouble tickets.
• Creating and maintaining the Standbuild OS for Redhat and CentOS Linux involving package management using rpm package manager, yum.
• Configuring NFS, NIS, NIS+, DNS, LDAP and disk space management on SUN servers.
• Installing & configuring Solaris 8, 9, 10 using Jumpstart, HP ITANIUM and PA RISC boxes using IGNITE
• Worked on Data Center Migration Project. Migrated Linux/Unix Servers from one data center to other data center with minimal downtime.
• IBM Websphere and Samba Server in Unix, Linux and Windows environment.
• Implemented Chef Server and components installations, including cert imports, increase chef license to 1000, creating admins and users. User account management, worked with Perl, shell scripting (ksh, bash) to automate administration tasks.
• Automated build process with Continuous Integration Tool Jenkins, Bash. Involved in designing/automating proof of concept projects and version control tool migrations and handling Version Control activities Clearcase.
• Participated in migration, from Base Clear Case to UCM Clear Case and even from CVS.
• Implemented Jenkins Master/Slave concept in Jenkins dashboard and a Git mirror for SVN repository, which enables users to use both SVN and GIT.
• Managing the code migration from TFS, CVS and Star team to Subversion repository.
• Configured application servers (JBOSS) to deploy the code.
• Implemented ClearPass policy manager(security tool) on almost 450 nodes using Chef knife concept and continuous integration(CI)
• Implemented autobuilds (on QA and Dev servers) on our 450-node server environment by configuring in config.cookbook moduels.
• Extensive use of volume management tool using Veritas Volume Manager to create disk groups, volumes with RAID architecture and layered volumes.
• Installation, Configuration and Administration of High Availability, SUN cluster and Veritas Cluster Servers for failover and redundancy purpose.
• Worked on Solaris 10 container technology, created local and global zones, modified local zone parameters, created file systems on local and global zones.
• Created Zettabyte file system (ZFS) in Solaris 10. Created zpools. Exported ZFS from local zones to local zones.
• Experience in Red Hat Cluster Suite and Global Filesystem, Red Hat Network Satellite Server.
• Checking the status and property information of hardware components during regular maintenance using hp online diagnostic utilities(SFM(system fault management),STM (support tool manager).
• Managed resources for zones using Solaris 10 container technology.
• Developed and implemented Software Release Management strategies for various applications according to the
• Automated centralized configuration using Puppet.
• Created and updated Puppet manifests and modules, files, and packages stored in the GIT repository.
• Architected and implemented automated cloud infrastructure using Chef.
• Proficient in troubleshooting allocation, dellocation storage issues related to NAS/SAN.
• Performed automated installations of Operating System using Jumpstart for Solaris and kickstart for Linux.
• Experience in Load Balance workload evenly across two or more servers, network links, CPUs, hard drives, or other resources, in order to get optimal resource utilization, maximize throughput, minimize response time, and avoid overload.
• Configured new service group and resources for new application in Veritas Cluster Servers.
• Worked on server consolidation and migration from one data center to another data centers.
• Supported 24/7 high availability production servers which involving co-ordinating with offshore team.
• Verify successful completion of daily incremental and database backups, following developed procedures

Environment: RHEL 5.x, Windows NT, SUN Netra Servers, Sun Enterprise 4500/4540/6500/450/420 R/250 server,SAN, Sunfire 6800/4800/480 , E10k/25K. HP Itanium, HP PA -RISC boxes Rp8200, IBM pSeries 670,p5 595, xSeries. Oracle clustered nodes.

Confidential, Florida

Linux System Administrator

Responsibilities:

• Design, implement and maintain RADIUS (OSC Radiator) in a production environment providing authentication for over 1 million dialup users in South America.
• Administer 100+ Redhat Linux, AIX, Solaris and FreeBSD servers.
• Monitor Intrusion Detection systems with automated patch updates to all servers andtools like Snort/ACID.
• Perform vulnerability assessment of business systems routinely and provide incident reports handling as well as respond to attacks on the systems
• Program tools in PERL and C for use in system administration, security purposes and automation
• Administer firewalls using iptables/ipchains (Linux)andIPFilter (FreeBSD/Solaris).
• Implement automated installations usingKickstart and Jumpstart.
• Write policies and procedures about the secure deployment of Solaris, Linux and AIX in insecure and non-firewalled environments.
• Provide administration of MySQL and Oracle database for core services including RADIUS authentication and WWW
• Facilitate product development and administration of dedicated Linux servers, business managed services, and webhosting platforms
• Facilitate migration procedures and methods from outsourced mail hosting providers.
• Create and setup subsystemsfor high volume outgoing mail using Postfix, an open source mail system.
• Setup, operate and maintain company-wide services such as mail (UW-IMAPD, sendmail, qpopper), DNS (BIND v8), WWW Apache / SSL, DHCP (ISC), and Samba.
• Administer Network Appliance F840 & F760 clustered NASes, EMC Symmetrix, and other storage subsystems.
• Setup 24×7 NOC monitoring and trouble ticket systems using open source tools such as Big brother, Netsaint, Request Tracker, as well as commercial tools such as Footprints and Netcool
• Develop internal monitoring systems which are deployed throughout South America
• Maintain open source packages that have been developed in house, responding to user suggestions, and integrate improvements in the software.

Environment: Solaris 8,9,10, RHEL 3,4, AIX 5.2, HP-UX 11.x and Windows NT, SPARC server 20 Enterprise Servers, SPARC server 1000/20, SPARCstation 10, Sun Sparc Ultra 1,5,10,Veritas File System 3.0, ORACLE

Confidential, Miami, FL

Linux System Administrator

Responsibilities:

• Installed, maintained and upgraded Red hat Linux and Solaris Servers using kickstart based network installation.
• Configured and administered multiple production Red hat 4/5/6 servers across multiple platforms.
• Worked on various Unix/Linux clusters such as Oracle RAC, SAP service guard S2S and Local, Service guard CFS S2S and Local, Linux VCS HA Cluster S2S .
• Monitored the systems and administered Servers for day-to- day problems, patches, user administration, and hardware failure, monitoring log files, backup, configuration changes and documentation.
• Perl development to interact with LDAP (AD) servers to query & modify person, host & netgroup data.
• Installation, setup, configuration, security administration and maintenance for flavours of servers.
• Worked closely with SAN team and allocated storage to the server and shared with its cluster nodes.
• Most of these tasks are performed using native Korn Shell and Perl scripts system resources from one partition to another partition.
• Preparation and execution of server patching and upgrade on more than 5000 servers including HPUX,AIX, Solaris and Red Hat Linux servers.
• Configured the yum repositories for installing and updating the packages on the Red Hat Linux.
• Experienced in configuring and maintaining System Securities using IPTABLES.
• Experienced in networking with LAN, WAN, Routers, Gateways, etc.
• Working on Volume management, Disk Management, software RAID solutions using VERITAS
• Volume manager. File system Tuning and growing using VERITAS File System (VxFS).
• Configured, maintained, applied changes and fail-over schedules of HA servers running Veritas Cluster Server and Red hat Cluster Server.
• Coded various Perl/Shell scripts to automate backup and recovery.
• Expert in setting up SSH, SCP, SFTP connectivity between Linux hosts. Experienced in DNS, NIS,
• NFS, CIFS, FTP, NIS, Samba Server, LDAP, remote access, security management, and system troubleshooting skills.
• UNIX Shell/Perl scripting for job automation. Creating zones for application.
• Created ZFS file system in Solaris 10 using Zpool and ZFS and created Veritas file systems 5.0, RAID 0, 1, 5 volumes.
• Installed application connectivity software to enable IBM print services. Configured and administered firewall rules, including the use of SNORT, NMAP to effectively monitor system files, port security,and network traffic activity coming through the firewall.
• Implemented Oracle RAC high availability application cluster on RHEL 4.5.

Environment: 2500+Linuxinstances, 900+ AIX Servers, HP-DL380 G6/G8 and DELL R710/720 and 920, p8/p7 Series, IBM-Blade Centre (Chassis Blades HS23, HS-22 & Racks), HMC V7R7.7.0, ILOKVM, RHEL 7/6/5, VMware-vSphere.

Confidential

Linux System Administrator

Responsibilities:

• Troubleshooting and resolution of incidents, working to critical SLAs.
• Hands on Experience on Service now incident tool on NFS, Samba servers..
• Well versed with LVM Package Management implementation & maintenance.
• Working Experience Files System Management And Swap space and User Administration.
• Having hands on experience in server migration.and about Schedule Cron Job for day to day SystemsAdministration and performance tuning & Monitoring for server deployment.
• Experience on Linux Kernel Patching, MS Patching using WSUS and manual patching
• Having Good Experience To Build new and existing Servers and handling Quality Assurance Testing (QAT) on customer base environment of more than 500 servers will be essentials.
• Installation, Configuration, Administration of ESX, Virtual Center, VI Client.
• Hand on experience on virtual machine new building.
• Creating and Managing Virtual Machines and Templates and Moving VMs from one LUN to another LUN using SVmotion.
• Creating duplicate VM's using cloning technology
• Moving VM's from one Host to another Host using VMotion Technology
• Monitor the Linux servers and run scripts regularly for cup utilization, memory utilization, disk Utilization network and traffic hardware failures Security implementing by using ACLs and Stickybit on files and File Systems.
• Recover the data when Disk has failed by moving PVs to other disks and replace the failed disk under LVM.
• Configure YUM server to install, update, and remove the packages on server and client side.
• Install the packages by using RPM and YUM server and check the package consistency.and Monitoring and analyzing the logs and troubleshooting the servers.

Environment: RHEL 3.x, Windows NT, SPARC server 20 Enterprise Servers, SPARC server 1000/20, SPARCstation 10, Sun Sparc Ultra 1,5,10,Veritas File System, Oracle