SUMMARY

• Overall 6+ years of experience as Linux/Unix system administrator on Red hat EL 4.x, 5.x, 6.x, Debian, CentOS 4.x, 5.x, Suse, Oracle Enterprise Linux, FreeBSD, Solaris 8,9,10 and VMware vSphere ESX/ESXi
• Experience in IT Industry with ability to accomplish all aspects of the software configuration management (SCM) process, DevOps
• Having Knowledge in using build tools like MAVEN and ANT for the building of deployable artifacts such as war & ear from source code.
• Experience with VMware vSphere ESXi 4.1/5.0/5.1/5.5
• Experience and Familiar with Virtualization technologies like installing, configuring, administering VMware ESX/ESXi and Citrix Xen Server/openstack. Created and managed VMs (virtual server) and also involved in the maintenance of the virtual server.
• Understanding of networking concepts, (IE. Configuration of networks, router configuration and wireless security, TCP/IP, VPN, Content Filtering, VLANs, and routing in LAN/WAN, Ethernet Port, Patch Panel and wireless networks.)
• Experience using various search, text, and file systems. Have used ‘grep’, ‘Sed’ etc.
• Experienced in installation, configuration, design and ongoing maintenance of Cisco router and switches.
• Experience in Installing, configuring and maintaining Samba, Web Sphere& Web Logic Application Servers, Nagois and Chef.
• Experience with x86 / x64 Intel, HP, IBM & Dell hardware like rack - mounted servers, tower servers, desktop, laptop and other peripherals.
• Experience in iSCSI SAN, NAS, NFS storage and RAID concept.
• Experience in Server monitoring, capacity planning, application monitoring with the help of Tivoli, HP insight, Nagios.
• Extensive experience in using Version control systems includes Subversion (SVN), GIT, and Clearcase.
• Handling day-to-day User Administration tasks like adding, deleting and modifying user data and documenting all user data in a centralized location.
• Performance tuning of Linux machines in the environment by kernel parameter tuning, identifying process that hog the system resources and containing them.
• Experience working in customizing the Kickstart and Jumpstart scripts to automate the installation of various servers used for various internal projects.
• Responsible for Backup and Recovery operations of various servers using VERITAS Net Backup.
• Working Knowledge on using and developing Shell, Perl and python scripts used to automate day-to-day administrative tasks.
• Responsible for OS maintenance activities like upgrading the OS, updating the services and third party software’s.
• Worked in maintaining integrity of Linux, Solaris servers by performing patching operations on a regular and planned way.
• Installation and configuration of Web Application servers like Apache, Tomcat and Weblogic.
• Have tested various Linux Environments in the Development/Test Stages to help create a better standardized environment and resolutions of any problems if any occurred.
• Experienced in documenting various maintenance activities and upgrades and changes in the network architecture.
• Worked with a bug/problem tracking system in responding to DNS requests, updates and tasks.

TECHNICAL SKILLS

Operating Systems: Linux (Red Hat, CENTOS & SUSE), HP-UX 11.0, 11.11, IBM AIX (5.3/6.1),Windows NT /2000/2003, MAC OS X 8/9.x/10.x.

Networking: TCP/IP, NIS, NFS, FTP, DNS, DHCP, Samba, Apache, SMTP, SSH, IP-Tables

WEB Technologies: Tomcat, APACHE 2.x, 3.x, Jboss, Web Logic (8/9/10) & Web Sphere 4.0/5.0

Scripting Languages and Databases: C, UNIX Bash & Shell Scripting, Perl Scripting, Python, Ruby, HTML and RDBMS, MySQL, Oracle, Sybase, MSSQL

Third Party Software: VERITAS Volume Manager, VERITAS Cluster Service (VCS), HP Service Guard, Sun Cluster, EMC Storage, RAID Technologies, SSL, Splunk

Protocols: TCP/IP, UDP RIP, OSPF, EIGRP, IGRP, SNMP, SMTP, TELNET

Cloud Computing / CI Tools: Jenkins, Ansible

Build Tools: ANT, MAVEN

Versioning Tools: GIT

PROFESSIONAL EXPERIENCE

Confidential, Los Angeles, CA

Devops Administrator

Responsibilities:

• Installation, configuration and Operating System upgrade on, Red Hat Linux 4.x, 5.x, 6.x and Sun Solaris 8,9,10
• Administrated server consolidation program through use of VMware ESX server and VMware Virtual Center
• Performance Management & Tuning of RHEL.
• Veritas File system and Veritas Volume Manager 2.5 are used to configure the RAID 1 and RAID 5 Storage Systems
• Installed and configured SAMBA server for windows and Linux connectivity.
• Installed and Configured Sun availability Suite 3.5 to implement Point-in-time snap shots and remote mirroring.
• Implemented the setup for Master slave architecture to improve the Performance of Jenkins.
• Used Jenkins for Continuous Integration and deployment into Tomcat Application Server.
• Installing, configuring and administering Jenkins CI tool on Linux machines.
• Management and troubleshooting of CentOS 6.x virtual machines via Vsphere usingAnsibleand / or command line utilities.
• Used AGILE MVN method to develop a build and also ANT as a build tool.
• Imported and managed multiple corporate applications into GitHub code management repo.
• Analyze and resolve conflicts related to merging of source code for GIT.
• Configured Akamai CDN configs and pointed to the Origin servers. Implemented Akamai rules based on application.
• Implemented and configured Backup policies and Storage Units.
• Managing disk storage with Veritas Volume Manager 3.5/4.1 and Solaris Volume Manager with Veritas File System (VxFS).
• Installed Web Logic 8.1 with SP5 Server and configured Domains, Admin and managed servers for Applications to be deployed.
• Securing Apache, PHP, and Tomcat as per PCI scope
• Implemented NIS and NFS for administrative and project requirements.
• Installed and Configured Web and investigate the configuration changes in the production environment.
• Worked closely with Oracle database administration team to ensure optimal performance of databases, and maintain development applications and databases
• Tuning the kernel parameters based on the application/database requirement.
• Monitoring system resources, logs, disk usage, scheduling backups and restore jobs.
• Set up Quotas for the user accounts & limiting the disk space usage.
• Configuring SUDO and granting root permission to users for performing certain activities.
• Upgrading RHEL 5.x to RHEL 6.x using live upgrade and manual upgrade.
• File system tuning, growing, and shrinking with Veritas File system 3.5/4.x
• Worked on network connectivity, SAN storage, creating LVM and taking TSM backup.
• Created BASH shell scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation.
• Modifying user’s password policies, group policy, UID and GID assignment policies.
• Monitored the performance of the system using top, sar, ps, prstat, vmstat, netstat, iostat, and cpuinfo to check the CPU utilization, bottlenecks of I/O devices, memory usage and network traffic.
• Troubleshoot network connectivity used ping, netstat, ifconfig, and trace route commands. Login to the remote system using sudo, putty, and telnet. Transfer files across the systems on the network used ftp, scp, and rsync commands.
• Linux technical support and prepared technical documentation for check in verification.
• Regular backing up of critical data and restoring backed up data.
• Worked in solving tickets issued on day to day activities and problems related to development and test servers.
• Provided 24x7 System Administration support for Red Hat Linux and CentOS servers and resolved trouble tickets on shift rotation basis.
• Provide support for building servers, patching, user administration tasks, deployment, software installation, performance tuning and troubleshooting and KVM.

Environment: Red Hat Linux 4,5,x 6 VMware ESX 3.5, vCenter 5.1, ESXi 5.1, sun Solaris 8,9,10, Solaris Volume Manager, Jenkins, Ansible, ANT, MAVEN, GIT, Apache, Tomcat, PHP, Nginx, Veritas Cluster Server, Weblogic 8.1, Samba, Oracle 9i/10g, HP DL 385 G6, HP DL380 G7.

Confidential - New York, NY

System Administrator

Responsibilities:

• Worked on Installation, configuration and upgrading of Oracle server software and related products.
• Responsible for installation, administration and maintenance of Linux servers.
• Established and maintain sound backup and recovery policies and procedures.
• Take care of the Database design and implementation.
• Implement and maintain database security (create and maintain users and roles, assign privileges).
• Performed database tuning and performance monitoring.
• Plan growth and changes (capacity planning).
• Support pre-production and production support teams in the analysis of critical services and assists with maintenance operations
• Creating and managing file systems, Creating and managing Logical volumes in Linux and VERITAS Volume manager in Solaris & Linux.
• Installation of patches and packages using RPM and YUM in Red hat Linux and Suse Linux and also using patch add and pkgadd in Solaris 10 Operating System.
• Usage of Service Management Facility for enabling, disabling and also troubleshooting services in maintenance mode.
• Modified Kernel parameters to improve the server performance in both Solaris and Linux.
• Providing Statistics on Hard Disk Usage.
• Configuration of Clusters using VERITAS Cluster Services in Solaris and Linux.
• Backups of systems and restoration using Net Backup on both Solaris and Linux.
• Creating Disk Volumes, Installed and Configured RAID controllers RAID 0, RAID 1 and RAID 5.
• Installation of HBA drivers and Upgrading of HBA cards before the move.
• Installed, configured and maintained Apache/Tomcat Web Server.
• Installed and configured NFS, NIS and FTP Servers.
• Bash Shell Scripting for job automation.
• Understanding and experience on TCP/IP networking in Solaris and Linux Systems.
• Experience with VMware ESX Server 3.5.
• Performance tuning and monitoring of Servers in Solaris, Linux.
• Supporting Customers on a real time remedy ticketing System for solving online operational issues.
• Experience with the Change Management tool for reporting and resolving issues.
• Worked as part of a team and provide 7x24 support when required.
• Performed general technical trouble shooting on trouble tickets to bring to resolution.
• Interfaced with Oracle Corporation for technical support.
• Patch Management and Version Control.

Environment: Solaris10/8, RedHat Enterprise Linux 4/5, Windows 2000, Sun SPARC Enterprise T5120/ T5220/ T5240, VERITAS Volume Manager/Cluster, SVM/LVM, VMware ESX Server, NFS, Samba, OpenLDAP, SQUID, Oracle 8i, bash, shell, bugzilla

Confidential

System Administrator

Responsibilities:

• Supporting the core Linux environment. This includes the administration, design, documentation and troubleshooting of the core Linux server infrastructure, communications network, and software environment
• Responsible for monitoring critical usage of resources like CPU, RAM & Hard disks and also monitoring security logs.
• Developing and maintaining automation systems for the Linux administrative efficiency improvement.
• Participating in network management and maintenance. Configured local and network file sharing.
• Within Unix/Linux environment, responsible for provisioning new servers, monitoring, automation, imaging, disaster recovery (planning and testing), scripting backup\recovery of bare metal hardware and virtual machines.
• Managed load firewalls, balancers, and other networking equipment in a production environment.
• Maintained data files, directory structure, monitor systems configuration and ensure data integrity.
• Integrated monitoring, auditing, and alert systems for databases with existing monitoring infrastructure.
• Responsible for setting up FTP, DHCP, DNS servers and Logical Volume Management.
• Managed network fine-tuning, upgrades and enhances to optimize Network performance, availability, stability and security.
• Provided authentication to users for Oracle databases.

Environment: s: Linux Systems (CentOS & Redhat), Oracle, DHCP, DNS, Logical Volume Manager, User Management

Confidential

System Administrator

Responsibilities:

• Connected to RHEL 5/6 Linux physical and virtual servers, troubleshoot Apache and MySQL issues as well as other common website-hosting issues such as disk space usage, memory usage, CPU usage; determine root cause and recommend possible changes to the customer.
• Performed patching maintenances on customer servers with complete documentation of changes made
• Installed and maintained software packages (.rpm) as necessary.
• Administration of VMware virtual Linux servers.
• Troubleshoot and resolve Backup issues with Holland MySQL backup service.
• Resize LVM disk volumes as needed.
• Created BASH utility scripts as needed to help automate tasks and determine needed information.
• Implemented proxy server for an extensive ESX virtual server environment.
• Implemented DHCP server for a development lab.
• Linux / VMware support on multiple VMware ESXI hosts - diagnose, troubleshoot, optimization, stabilization and migration of various Linux virtual machines running Apache 2.0 webserver, MySQL, backup to “cloud “storage.
• Migrate virtual Apache hosts between ESXi servers / Linux virtual guests (without using Vmotion) for load balancing.
• Developed automated scripts for performing regular Linux tasks.

Environment: Linux (RHEL 4/5), AIX 6.1, Oracle 11/10g, Jboss 5.0, WebSphere Application Server 5.x/6.0/6.1, EMC Storage SAN, VMWare servers, and Apache, DHCP.