SUMMARY

• 9 years of experience in UNIX/Linux systems administration, systems maintenance, systems security, and network administration.
• Experience in administration of Redhat Linux ES 4/5/6, Solaris 2.5, 2.6, 7, 8, 9, 10, SuSe EL 7, 8, 9, 10, 11 & 12.
• Involved in migrations from Solaris to Linux environment using third party tools and also datacenter migrations.
• Experience in installing Redhat Linux on Confidential Hardware, Dell, Confidential and IBM HW.
• Worked on blade systems which include Confidential 7000c with BL460c and Dell M1000e with M600 servers for the installation of Redhat Linux EL 4.x, 5.x, 6.x on VMware ESX 3.5, 4.1, and 5.0.
• Experience in automation using Puppet and involved in developing Manifest and Modules for System and Application configuration Management.
• Deployed Puppet, Puppet Dashboard, and PuppetDB for configuration management to existing infrastructure.
• Disk space and File system management using Veritas Volume Manager 4.x, 5, Logical Volume Manager and Solaris Volume Manager.
• Experience in supporting Cloud environments including Private and Public cloud like Amazon Web Services, Terremark and Rackspace.
• Involved in supporting 100+Cloud Instances running Linux and Windows on AWS, experience with Elastic IP, Security Groups and Virtual Private Cloud in AWS.
• Experience installing Puppet agents and pushing Manifests/Modules to 500+ Puppet clients.
• Build automation experience (e.g. Anthill Pro, IBM Urban Code Deploy, Hudson, Cruisecontrol)
• Deployment automation experience (e.g. JBoss ON, scripted workflows, AnthillPro, uDeploy, etc.
• Used AWS Identity and Access Management (IAM) to create users and groups and to provide access to different AWS services, by enabling permissions to them.
• Experience with installation of support of applications which include Apache 2.2.x, WebLogic 9, 10, JBoss 4.2, TIBCO, Oracle, Informatica, CA eTrust etc.
• Experience with SAN solutions which included McData, Brocade FC switches and Hitachi, EMC arrays.
• Hands - on experience in building server environment from scratch using kickstart for Linux and jumpstart for Solaris.
• Sound knowledge on VERITAS Cluster Server, VERITAS File System and VERITAS Volume manager.
• Experience in managing HDS SAN frames like USPV, VSP & AMS 2000 and experience managing HDLM to manage multipathing in Linux and Solaris servers.
• Experience in patching Redhat/ SUSE/ Ubuntu Linux servers by using repositories and Redhat Satellite server.
• Worked with F5load balancers that improve the overall performance of applications by decreasing the burden on servers associated with managing and maintaining application and network sessions.
• Experience with backup technologies like Tivoli Storage Manager 5.x and Veritas Netbackup 3.x, 4.x, 6.5.
• 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.
• Experience with high-end enterprise servers Sun T2000, 5240, M5000, 6800, 4800, Confidential ProLiant DL 380, 385, 580, IBM HS22, HS12, LS22 Blade center Servers.
• Implementation of backup solutions using Veritas Net backup 4.5, 6.5.
• Experience in Shell scripting using sh, ksh, bash and PERL
• Experience in Performance Monitoring of CPU, Memory, Disks, Network using various monitoring tools like Nagios, BMC for UNIX.
• Extensive experience with Troubleshooting of issues with applications, network, user hardware, naming services etc.
• Experience in Network Configuration, Performance Tuning, Security Hardening.
• Experience in configuration of naming services like NIS, DNS etc. on Linux and Solaris.
• Experience in architecting, setting up data centers and migration of applications.
• Strong analytical, diagnostics, troubleshooting skills to consistently deliver productive technological solutions.
• Implement OpenSSH based security for the Redhat, HPUX and Solaris machine.
• Experience in System performance tuning Configuration.
• A good team player with strong communication skills and an inquisitive mind to learn more.

TECHNICAL SKILLS

Operating Systems: RHEL 3.x,4.x,5.x,6.x, Sun Solaris 8,9,10,11,, VMWare ESX 3.5,4.0,4.1,SUSE 9.x,10.x,11.x,Oracle Enterprise Linux 4,5, CentOS 2.x,3.x,4.x,5.x,6.x,7, WindowsNT4,Windows 98/2000/2003/2008/ XP/2012R2.

Hardware: Dell Poweredge 1950,2950,R210,R310,R410,R510,R710,Blade Center Servers M710,M905,M610,M610X,M710HD,Blade Chassis M100c/Modular Blade Enclosure. Confidential Proliant DL series,C3000 and C7000 Enclosures,BL280C,BL460C,BL600C,BL20,BL40,Integrity Servers RX3660,RX6660,BL860C i2,BL870C i2,BL860C, IBM X3850,X3950,X3250 Blade Enclosures H,S and Eseries, Blades HS22,HS21,JS43,JS23,JS12,PowerSeries PS510,530,610,710,701,702SUNFIREV210,V240,V440,V880,T2000,T5240,T5220,M3000,M5000,E4800,E6800,10k,20k, Confidential UCS 200, 250, 300, 440, 460

Languages: Scripting, PERL, C, C++, PHP, JAVA, PL/SQL, HTML, JavaScript, J2EE, JSP, Servlets.

Databases: Oracle 10g/9/8, Sybase 11.5.1, POSTGRESSQL, MYSQL, MSACESS,DB2

Networking: TCP/IP, DNS, NFS, NIS, SSH, DHCP, Confidential Routers / Switches(MDS),Nexus 5000 and LAN, Open SSH, Open SSL, SSL, SSH, LDAP, Open LDAP,NIS,NIS+,NFS

Automation: Puppet, chef

Storage Tools: EMC Open Migrator, Power path, Hitachi Device Manager, Storage Navigator

Tools: Veritas Cluster 3.x, 4.x & 5.x, Redhat Cluster, Sun Cluster 3.2, VMware, VERITAS Netbackup 6.0, VERITAS Storage Foundation Suite, Solaris Volume Manager, Sun Java Studio, sendmail, Puppet, Foreman, Hiera, Linux Imaging Software, NAGIOS, NAGVIS, NDOUTLS, Zenoss, MRTG, PRTG, Egenera's cloud management software, PAN Manager, KVM, Xen Hypervisor, TSM 6.x

Web Technologies: Lotus Domino 5 / 6, IIS, HIS, ESX 2.5.1, 25.2 & 3.0 beta. iPlanet Webserver 6.0 /Sun one web server 6.3/6.5, Netscape Enterprise Server 4.0, Tomcat 5.x/4.x/3.x & Apache Server 1.x/2.

PROFESSIONAL EXPERIENCE

Confidential, North Carolina

System/Devops Engineer

Responsibilities:

• Extensively worked on AWS cloud to create both Windows and Linux instances and used various AWS services like Elastic Block Storage, S3, Route 53, RDS, Cloud Formation, Amazon Elastic Cache and Elastic Load Balancing.
• Responsible for writing scripts to automate building of Windows and RHEL servers in all environments including Test, Dev, DR and Production.
• Deployed Puppet for automated management of machine configurations.
• Responsible for writing modules and manifests in the Puppet server and to handle the client servers by defining them using node definitions.
• Used Foreman tool along with Puppet for managing, provisioning and configuring servers and to automate tasks to easily deploy applications on VMs, bare-metal and cloud instances.
• Responsible to build Public Cloud Environment (Amazon AWS, Terre mark and Rack space) instances and to manage Firewall and Load balancing between various servers.
• Working on Microsoft and Linux Operating Systems (Windows Server 2012, 2008, 2003, Windows XP, Debian, Red Hat, CentOS etc.)
• Used Hiera, a value lookup tool with Puppet for configuring data and to make Puppet better by keeping site-specific data out of manifests.
• Implemented multi-tier application provisioning in OpenStack cloud, integrating it with Chef/Puppet
• Created an open source configuration management and automation PoV by evaluating Chef and Puppet in a cloud environment
• Working experience on Saas environment.
• Implemented horizontal auto-scaling in OpenStack cloud, integrating it with Zenoss, OTRS and Chef
• Design and automate existing maven build process using IBM buildForge. Hudson and Jenkins.
• Responsible for actively involved in Change board meetings and responsible for creating changes and implementing them mainly in Production environment.
• Remote monitoring and management of servers using Nagios and PRTG Network Monitor and also monitoring of servers in Amazon AWS cloud.
• In installing new servers and configure hardware, peripherals, services, settings, directories, storage etc in accordance with standards and project/operational requirements.
• Installation Redhat & SUSE Linux on Confidential and Confidential HW using Kickstart.
• Jumpstarting Solaris 10 operating systems on various Sun servers and Kickstarting Redhat EL 5/6.
• Annual Participation in Disaster Recovery (DR) and power down Activities.
• Involved in health check of servers after patching / rebooting and to see all the services of Linux and Windows servers on AWS Cloud and physical servers are healthy.
• To perform daily system monitoring, verifying the integrity and availability of all hardware, networking equipment, server resources, system and key processes, reviewing system, error and application logs and verifying completion of scheduled jobs and tasks.
• Performed Firmware, NIC policy upgrade and patches on UCS.
• Involved in developing custom scripts using Perl, Ruby & Shell (bash, ksh) to automate jobs.
• Provided 24X7 on-calls production and customer support including trouble shooting problems.

Environment: Redhat EL, Centos 6, Debian Wheezy, Apache, PHP, Windows 2012 R2, IIS, MySQL, Puppet, AWS Cloud, Terremark, DNS, TCP/IP,PE, Confidential UCS 200, 250, 300, 440, 460, DELL R410,R610,R910,1650,1950,860, Disk Arrays MD3000, TL2000,TL4000, EMC Ax-4,Clarion.

Confidential, VA

UNIX Systems Administrator

Responsibilities:

• Worked as L2/L3 operations SA in an organization consisting of 20000 physical servers globally, running Redhat Linux operating System.
• Installation of RHEL Linux 5/6 operating systems on Confidential & Confidential UCS HW.
• Installation Redhat & SUSE Linux on Confidential and Confidential HW using Kickstart PXE and Cobbler.
• Managed 250+ Linux servers using Puppet master server and pushed OS related updated using custom manifests.
• Rebuild of the both Linux (Redhat/SUSE/Ubuntu) OS when the server is crashed, using the established profile settings.
• Implemented Jumpstart for SolarisandKickstart for Linux.
• Involved in supporting Virtualization using VMWare ESX 4/5 and Redhat KVM. Supported around 250+ VM’s on ESX and KVM servers.
• Involved in Change Control Management and documentation of the procedures.
• Experience in troubleshooting samba related issues.
• Performed disk administration using LVM, Linux Volume Manager (LVM), Solaris Volume Manager (SVM) and Veritas Volume Manager 4.x/5.x.
• Installed VMWare ESX4.1 to perform virtualization of RHEL/SUSE/OEL servers.
• Experience Working with EMC storage arrays like Clariions and VMAX and setting up SRDF and for DR purpose on Production DB and Business Critical Applications.
• Experience with patching of Linux and Solaris servers and hardening of servers using native and third party tools.
• Performance monitoring on Linux servers using iostat, netstat, vmstat, sar, top & prstat.
• Have experience in troubleshooting TSM related backup issues.
• Installed and configured database like MySQL, Mongo server.
• Administered Netbackup 5.1 Performed backups on Tape library TL2000, TL400
• Worked on application like Jenkins tool for testing builds.
• Configure RAID on MD3000 Disk Array. used mdadm commands
• Updated firmware on HBA cards like qlogic and installed it on PE Dell R410,R610 servers
• Installed NIC card and upgraded firmware on NETSCREEN Security appliances
• Worked on POSTFIX mail server.
• Installed and configured DHCP, DNS, NFS
• Configured iptables on Linux servers.
• Worked on monitoring tools like MRTG graphs, BB big brother
• Worked on volume management using Veritas Volume Manager 4.0
• Installed and configured PHP
• Troubleshooting on Sun Java System Web Server 6.0 and Apache 1.3.x web server on Solaris with experience in installing SSL certificates.
• Performed Package administration on Linux using rpm, yum and Satellite server.
• Patch and package administration for installation of patches as per the company policy and installation of packaged application.
• User, Group management for all the UNIX servers.
• Modifying/ Writing scripts in Bash and Korn shell for optimizing day to day administration
• Performed Inventory management, Server decommissioning and adding new servers to the list.

Environment: Redhat EL 3.x, 4.x, Centos 5, Apache, PHP, Veritas Volume Manager 4.1, 5, DNS, NFS, PE DELL R410,R610,R910,1650,1950,860, Sun T2000, SunFire v890,E2900, Disk Arrays MD3000, TL2000,TL4000.EMC Ax-4,Clarion,VNX

Confidential, MILWAUKEE, WI

Linux Systems Administrator

Responsibilities:

• Installation of Redhat/SUSE/Ubuntu Linux on x86 HW like Confidential and Dell.
• Performed volume management tasks like mirroring using SVM, Veritas Volume Manager 4.x/5.x and HPUX LVM.
• Supported Orcale DB and Oracle RAC on Redhat environments.
• Experience setting Linux to support RAC, Oracle and Weblogic installations and performed trouble shooting on performance issues.
• Administered WebLogic 9 application servers which included installing SSL certificates.
• Troubleshooting on Sun Java System Web Server 6.0 and Apache 1.3.x web server on Linux with experience in installing SSL certificates.
• Experience working with SAN environments majorly servers connected to EMC Clariions, DMX and Celerra’s.
• Installation and configuration of VERITAS Storage Foundation Suite, VxVM.
• Experience working with servers connected to on SAN and NAS environments like EMC and NetApp.
• Experience setting up cluster environments like Veritas Clustering for high availability of Business Critical Applications.
• Installation of Oracle 9i, 10g on the Sun servers running SUSE & Redhat Linux.
• Experience working with EMC Powerpath and Redhat Native multipathing.
• Patch and package administration for installation of patches as per the company policy and installation of packaged application
• User, Group management for all the UNIX servers
• Editing crontab in post - installation of Unix servers

Environment: Redhat EL 3.x, 4.x 5.x, SLES 10, 11, Sun Java System Web server 6.0, Verities Volume Manager 4.1 5, Oracle 9i, DNS, NFS, Sun T2000, M5000, v480, v880.

Confidential, San Jose, CA

Linux Systems Administrator

Responsibilities:

• Installation of Redhat, and SUSE Linux on Confidential and Dell Rack and Blade servers.
• Created Linux VM’s and involved in tuning the operating system for installation of applications
• Installing, administration and troubleshooting of Apache 2.x web server, which included tasks like creating virtual hosts, installing SSL certificates etc.
• Installation of Linux servers and creation of VMS’s using the web console vCenter on VMWare ESX.
• Worked on installation and administration of version control tools like RCS and CVS.
• Managing configuration files like httpd.conf, crontab in the revision control systems.
• Created the user accounts and profiles, assigned permissions using Active Directory, a directory service which contains information of all user accounts and which optimizes the network traffic. It provides the user logon and authentication services using Kerberos.
• Installation and support of desktops with Windows 2000 and Windows XP Operating system.
• Managed the member server, a server which hosts services like IIS, DNS, and DHCP.
• Protected the organization’s network from unwanted traffic coming from the internet using ISA Server which is a proxy server and a web caching server.
• Provided the backup and recovery of the files and data, worked on Windows Firewall, Terminal server, and troubleshooting the computer related problems.
• Performance monitoring and tuning of the applications and OS using iostat, sar, vmstat, prstat commands.
• Installation of patches on servers running Redhat & SUSE Linux servers.
• Worked on cronolog in Linux servers for managing the logs of the web servers.
• Was involved in Change Control Management and documentation of the procedures.
• Performed Monitoring of CPU, Memory, Disks, Network using PRTG and Nagios monitoring.
• Scheduling the jobs by creating crontabs /Crontabs on Linux and Windows Servers