SUMMARY:

• System Administrator with over 8 years of IT experience working on UNIX and Linux servers.
• Extensive experience on Migration , Upgrade and patching of the Servers.
• Hands on experience in Installation, configuration and administration of RHEL 4.x/5.x,6.x, AIX 4.3/5.1/5.2/5.3/6.1 , Red Hat Satellite 6, OEL 4/5.x and SUSE Linux 10.x/11.
• Expert in Kick start and NIM installation methods for RHEL and IBM - AIX.
• Managed servers on Amazon Web Services (AWS) platform using Puppet configuration management.
• Deploy puppet to completely provision and manage AWS EC2 instances, volumes, DNS, and S3.
• Launching and configuring AWS EC2 servers using AMI’s and configuring servers for specified applications.
• Designed puppet modules to manage configurations and automate install process.
• Deployed Puppet, Puppet Dashboard and Puppet DB for configuration management to existing infrastructure.
• Created and maintained user accounts, profiles, security rights, disk space and process monitoring.
• Installation of guest OS, configuration and patch application on hosts using Tivoli Provisioning Manager (TPM).
• Implemented day-to-day tasks in Red Hat Linux including but not limited to upgrading RPM’s, Kernel tuning, HBA Driver, configure SAN’s, Multipathing and Logical Volume Manager(LVM)
• Experience working with Puppet and Chef to automate the job.
• Used Nagios and Cacti for performance monitoring.
• Installation of patches, security fixes and packages on AIX and Linux servers
• Installation and configuration of Web hosting administration such as HTTP, FTP, SSH, & RSH.
• Experienced in working with SAN hardware from vendors including EMC (Symmetric and CLARiiON), Hitachi.
• Working experienced with Blade Logic Infrastructure on Linux OS.
• Supported Web Sphere Application Server, IBM HTTP/ Apache Web Servers in AIX environment for various projects.
• Worked on installation of LAMP (Linux, Apache, MySQL, and PHP) for different applications.
• Expert in Installing, configuring and maintaining DNS, NIS, NIS+, NFS, DHCP, TCP/IP.
• Expertise in implementation and designing of disaster backup and recovery plan.
• Expertise in Networking (TCP/IP, Ethernet), FTP, NFS, NIS, DNS, DHCP and RAID levels.
• Experienced in working with different teams such as Network Engg., Database team and application teams to resolve the issues and provide Customer Satisfaction.
• Experienced with using Oracle RAC for clustering and high availability in Oracle database environments.
• Efficient in installing, configuring and implementing the RAID Technologies using various tools.
• Expert in managing a cluster of servers using Red Hat GFS.
• Installation, configuration and maintenance of apache/tomcat, samba, Web Sphere Application Servers.
• Proficient in System Backup and Recovery from tapes using ufsdump, ufsrestore, tar and cpio
• Excellent scripting skills in UNIX Shell, Perl and python.
• Provided Troubleshooting and Customer support in critical 24x7 production and development environments.

TECHNICAL SKILLS:

Operating System: RHEL 4.x, 5.x, 6.x, SUSE, CentOS, AIX,Fedora, SUSE, Debian, Ubuntu, IBM-AIX, Sun Solaris, and HP-UX, Windows - /2007 Server/XP Pro/Vista/7/8.

Application servers: Web logic 10.x/9.x/8.x, Websphere, Apache HTTP/Tomcat/Jboss .

Hardware and Virtualization: Confidential (PowerEdge), HP (ProLiant G7 & G8), IBM Blade CenterDell Power Edge Servers and MD1000 Storage/RAID setup, VMware ESX.

Cloud services: Amazon Web Services (Ec2/S3/EBS/IAM/SNS/SQS/ELB) and Google Web services

Programming Languages: Korn Shell (ksh), Bash, Python, PHP and Perl.

Databases: SQL, Oracle 8/9i/10,11G, DB2 and MySQL.

PROFESSIONAL EXPERIENCE:

Confidential

Systems Administrator, Stanford, CA

Responsibilities:

• Hands on experience in Installation, configuration and administration of RHEL 4.x/5.x,6.x, AIX 4.3/5.1/5.2/5.3/6.1 , Red Hat Satellite 6, OEL 4/5.x and SUSE Linux 10.x/11.
• Expert in Kick start and NIM installation methods for RHEL and IBM-AIX.
• Managed servers on Amazon Web Services (AWS) platform using Puppet configuration management.
• Deploy puppet to completely provision and manage AWS EC2 instances, volumes, DNS, and S3.
• Launching and configuring AWS EC2 servers using AMI’s and configuring servers for specified applications.
• Designed puppet modules to manage configurations and automate install process.
• Deployed Puppet, Puppet Dashboard and Puppet DB for configuration management to existing infrastructure.
• Created and maintained user accounts, profiles, security rights, disk space and process monitoring.
• Installation of guest OS, configuration and patch application on hosts using Tivoli Provisioning Manager (TPM).
• Implemented day-to-day tasks in Red Hat Linux including but not limited to upgrading RPM’s, Kernel tuning, HBA Driver, configure SAN’s, Multipathing and Logical Volume Manager(LVM)
• Experience working with Puppet and Chef to automate the job.
• Used Nagios and Cacti for performance monitoring.
• Installation of patches, security fixes and packages on AIX and Linux servers
• Installation and configuration of Web hosting administration such as HTTP, FTP, SSH, & RSH.
• Experienced in working with SAN hardware from vendors including EMC (Symmetric and CLARiiON), Hitachi.
• Working experienced with Blade Logic Infrastructure on Linux OS.
• Supported Web Sphere Application Server, IBM HTTP/ Apache Web Servers in AIX environment for various projects.
• Worked on installation of LAMP (Linux, Apache, MySQL, and PHP) for different applications.
• Expert in Installing, configuring and maintaining DNS, NIS, NIS+, NFS, DHCP, TCP/IP.
• Expertise in implementation and designing of disaster backup and recovery plan.
• Expertise in Networking (TCP/IP, Ethernet), FTP, NFS, NIS, DNS, DHCP and RAID levels.

Environment: Debian and Redhat Linux and SUSE Linux, VMWAREIBM blade servers, Java, Bladelogic, LAMP, Websphere 5.x/6.x, Apache 1.2/1.3/2.x, Logical Volume Manager, VERITAS netback up 5.x/6.0, SAN Multipathing (MPIO, HDLM, Power path), VM ESX 3.x/2.x, RHEL 5.x/4.x and Windows Server Environment. Python, JIRA, Puppet, Nagios, Zookeeper, Kafka, Storm,Splunk.

Confidential

AWS Engineer, Dallas,Tx

Responsibilities:

• Worked on building and deploying Java code through Jenkins.
• Design, investigation and implementation of public facing websites on Amazon Web Services (AWS).
• Using Jenkins Amazon Web Services (AWS) Code Deploy plugin to deploy to AWS.
• Configured Elastic Load Balancers with EC2 Auto scaling groups.
• Implemented AWS solutions using EC2, S3, RDS, Elastic Load Balancer and Auto scaling groups.
• Supported small to medium sized projects using GIT.
• Managed Amazon Web Services for the project including configuration and deployment of all required infrastructure, administrative tasks, and budgeting.
• Developed automation and deployment utilities using Ruby, Bash, and PowerShell.
• Created automation and deployment templates for relational and NOSQLdatabases (standalone and RDS), including MSSQL, MYSQL, MongoDB in AWS..
• Involved in setting up JIRA as defect tracking system and configured various workflows, customizations and plugins for the JIRAbug/issue tracker.
• Created and maintained continuous build and continuous integration environments in SCRUM and AGILE projects.
• Worked as a system administrator for the build and deployments process on the enterprise server.
• Documented project's software release management procedures with input decisions.
• Automation of daily tasks using Shell and Perl scripts.

Environment: SVN, Jira, Maven,Jenkins,PUPPET, Web Sphere Application Servers, Jboss Application Servers,Sandbox, AWS, DATABASE, LINUX, VMWARE.

Confidential, Chicago, IL

Systems Administrator

Responsibilities:

• Installation, Maintenance and Administration of Red Hat Enterprise, SUSE and Cent OS on VMS and physical server.
• Created users, manage user permissions, maintain User & File System quota on Red Hat Linux, CentOS and AIX.
• Creation and Maintenance of User Accounts file systems and successfully created logins IDs on large number of servers
• Installation of Storm and Kafka on 4 node cluster
• Written Kafka Rest API to collect events from front end.
• Developed utilities in perl,including templates and configuration for Nagios and basic system configurations. Wrote custom plugins for Nagios.
• Extensive troubleshooting of system and software upgrade issues for a tightly integrated product.
• Install/configure/maintain the Linux servers, NIS, DNS, NFS, Mailing List, Send mail, apache, ftp, sshd.
• Responsible for system configuration and installation of software applications, operating system upgrades
• Automate site configuration using Puppet
• Work on installation of VMware ESX5.5, migration of VMs and data storage, patch management, snapshot and template and clone
• Manage user/group and sudo access on the Linux operating system
• Setup Auditing task for JIRA tickets
• Migration of Applications and Troubleshooting using LAMP
• Experience with version control tools like GIT and managed source code.
• Deploy puppet to completely provision and manage AWS EC2 instances, volumes, DNS, and S3.
• Installation and configuration of PostgresSQL database on RedHat/Debian Servers
• Logged events from forced crash dumps and troubleshooter server issues
• Installation of Database servers and users management such as Oracle, MYSQL, SQL Server.
• Worked on daily task on Red Hat Linux that included upgrading rpms, kernel, HBA driver, configuring SAN Disks, multipathing and LVM file system
• Provided 24/7 on call support on Linux Production Servers. Responsible for maintaining security on RedHatLinux.
• Setting up Virtual machines on ESXi server for other consultants
• Configured iptables on Linux servers.
• Configured and managed VirtualBox servers for development and local application support.
• Managed, led and supported Windows XP, 7, Server 2008, VMware and Active Directory domain network in multi-locations
• Documented strongly the steps involved for data migration on production servers and also testing procedures before the migration.
• Installed JIRA Licenses
• Reviewed the installation of Atlassian and Perforce tools in prototype environment.
• Defined the work flow & schema between Jira & Perforce
• Maintaining the company website which uses the CMS systems Expression Engine and Drupal.
• Implemented open source base monitoring tool Nagios 3.0 for servers, SAN switches, EMC SAN Storage and VMware ESX and ESXi.

Environment: Debian and Redhat Linux and SUSE Linux, VMWAREIBM blade servers, Java, Bladelogic, LAMP, Websphere 5.x/6.x, Apache 1.2/1.3/2.x, Logical Volume Manager, VERITAS netback up 5.x/6.0, SAN Multipathing (MPIO, HDLM, Power path), VM ESX 3.x/2.x, RHEL 5.x/4.x and Windows Server Environment. Python, JIRA, Unix,Puppet, Nagios, Zookeeper, Kafka, Storm.

Confidential, Chicago, IL

Linux/ DevOps Engineer

Responsibilities:

• Designed and deployed AWS solutions using E2C, S3, RDS, EBS, Elastic Load Balancer, and Auto scaling groups.
• Optimized volumes and EC2 instances.
• Wrote and maintained code (PHP,HTML,CSS, and Java Script) for customer facing sites
• Deploy puppet to completely provision and manage AWS EC2 instances, volumes, DNS, and S3.
• Installation, Maintenance and Administration of Red Hat Enterprise, SUSE and Cent OS on VMS and physical server.
• Creating Bladelogic configuration object.
• Developed and deployed automated systems in Python and PHP
• Enrolling and Licensing of Servers into Bladelogic
• Deployed an Apache Solr search engine server to help speed up the search.
• Created a wrapper library to help the rest of the team use the Solr database.
• Deployed and administered Microsoft SQL Server in standalone and clustered environments.
• Developed and implemented procedures for operational processes including deployment, upgrade, migration and maintenance
• Developed and deployed a custom Order Management Application
• Cluster coordination services through Zookeeper
• Configured JBoss Fuse to authenticate and authorize users against RedHat Directory Server RHDS LDAP
• Wrote and maintained code (PHP,HTML,CSS, and JavaScript) for customer facing sites.
• Pacakaged utilities and numerous CPAN modules into rpms,including writing or modifying spec files.
• Create customized CMS (Content Management System) CRM (Customer Relationship Manager ) applications depending on clients preference
• Created and configured new ActiveMQ queues and topics to be used by RHDS LDAP users.
• Developed a generic Json message router using Camel. The Development effort was done using JBoss development Studio 7.1
• Participate in bi-weekly knowledge sharing sessions with team members to share my knowledge on ActiveMQ.
• Monitor website performance using CloudWatch, Gomez, SiteCatalyst and Splunk
• Provide documentation and Wiki articles for the team.
• Installation, configuration and management of Apache 2.24and Tomcat 7 servers.
• Supported 300+ Server in Dev, QA, Staging and Production environments plus primary support to all kind of issues for Redhat 5.x &6.x Linux by using puppet configuration management tool.
• Automate site configuration using Puppet.
• Installed, configured, and supported Puppet to create and enforce standardization across environments.
• Designed puppet modules to manage configurations.
• Written Storm topology to accept the events from Kafkas producer and emit into Cassandra DB
• Configure and Troubleshoot Redhat API Gateways
• Written Junit test cases for Storm Topology
• Experience with version control tools like GIT and managed source code.
• Created users, manage user permissions, maintain User & File System quota on Red Hat Linux, CentOS and AIX.
• Test Chef Cookbook modifications on cloud instances in AWS and using Test Kitchen and Chef Spec
• Create documentation for Chef best practices to be used by developers as a guide to Chef Automation
• Build servers in cloud based and physical infrastructure.
• Work with Chef automation to create infrastructure and deploy application code changes autonomously
• Create cookbooks for Chef using the Ruby programming language
• Designed and implemented scalable, secure cloud architecture based on Amazon Web Services.
• Leveraged AWS cloud services such as EC2, auto-scaling and VPC (Virtual Private Cloud) to build secure, highly scalable and flexible systems that handled expected and unexpected load bursts, and are able to quickly evolve during development iteratrions.
• Implemented multiple high-performance MongoDB replica sets on EC2 with robust reliability.
• Servers support included NFS, NTP, FTP, users setup/troubleshooting
• Implementing appropriate permissions for files and folders and Managing Users and Groups.
• Creation and Maintenance of User Accounts file systems and successfully created logins IDs on large number of servers
• Knowledge on Ecosystem.
• Installation, Maintenance and Administration of Red Hat Enterprise, SUSE and CentOS on VMS and physical server.
• Install/configure/maintain the Linux servers, NIS, DNS, NFS, Mailing List, Send mail, apache, ftp, sshd.
• Performed TCP/IP, DNS and DHCP administration.
• Monitor Disk space and space as needed in LVM
• Installing and upgrading patches and packages on RHEL 5.x and 6.x servers using RPM, YUM and third party software applications.
• Limiting user account privileges using SUDOERS
• Installation of Web sphere application and mange users and service account with nopassword option in sudoers file to manage Webshere application.
• Installation of Database servers and users management such as Oracle, MYSQL, SQL Server.
• Installation and configuration of Web /Application Server Apache-Tomcat
• Monitoring and install or updates patch software’s, firmware, and security patches for all applications in installed infrastructure via Redhat network.
• Management of Puppet automation tool including installation of Puppet agent on client.
• Work on security compliance of the servers which include TCP/IP vulnerability fix, security patches management, password policy using IBM internal tool ITSAS
• Configure and setup Linux server samba protocol.
• Maintained backup schedules for server storage. Read and interpreted UNIX logs.
• Responsible for system configuration and installation of software applications, operating system upgrades.
• Installation and configuration of SAMBA x server for interface between Linux servers and Windows servers to share files.
• Worked on daily task on Red Hat Linux that included upgrading rpms, kernel, HBA driver, configuring SAN Disks, multipathing and LVM file system
• Work on installation of VMware ESX5.5, migration of VMs and data storage, patch management, snapshot and template and clone
• Created a replication strategy for JIRA across disconnected servers setup and configure the structure plugin for JIRA
• Configuring, administering and trouble shooting of NFS, AutofS
• Utilized RabbitMQ as the messaging middleware.

Environment: AWS, Red Hat Enterprise Linux 4.x, 5.x, 6.x, Unix,Puppet, Chef, GIT, Jira,RabbitMQ, VERITAS Volume Manager, Samba, Oracle RAC/ASM (11g), EMC Power path, Confidential PowerEdge 6650, HP Proliant DL 385, 585, 580,Zookeeper,Kafka, Storm, Sun Fire v440

Confidential, Irving, TX

Linux System Administrator

Responsibilities:

• Installed, Configured and Maintained Debian/RedHat Servers at multiple Data Centers.
• Configured RedHat Kickstart for installation of multiple production servers.
• Installation, Configuration and administration of DNS, LDAP, NFS, NIS, NIS+ and Sendmail on RedHat Linux/Debian Servers.
• Installation, Configuration and administration of VMWARE IBM Blade servers
• Worked with Java Message Service (JMS) to create, send, receive, and read messages.
• Experience working with production servers at multiple data centers.
• Experience using BMC blade logic client automation Tool.
• Experience in migration of consumer data from one production server to another production server over the network with the help of Bash and Perl scripting.
• Used Chef, Puppet for Monitoring system and automation.
• Create puppet modules to manage configurations and implemented them on agents.
• Wrote Chef Cook books and recipes for automation and repeatable deliveries.
• Built and deployed a Chef Server in AWS for infrastructure automation.
• Wrote and Test chef recipes using chef spec and test kitchen
• Installed and configured monitoring tools such as munin and nagios for monitoring the network bandwidth and the hard drives status.
• Developed and supported the Red Hat Enterprise Linux based infrastructure in the cloud environment.
• Experience in AWS
• Developed automation scripting in Python(core) using Puppet and chef to deploy and manage Java applications across Linux servers.
• Diagnosing failed disk drives using shell scripting for automated tasks.
• Logged events from forced crash dumps and troubleshooter server issues.
• Troubleshooting production servers with IPMI tool to connect over SOL.
• Provide Linux system administration support during deployment operations through launch and configuring instances in a Cloud Computing Environment Amazon Web Services.
• Experience with system imaging tools Clonezilla and System Imager for data center migration.
• Configured yum repository server for installing packages from a centralized server.
• Installed Fuse to mount the keys on every Debian Production Server for password-less authentication.
• Installed and configured DCHP server to give IP leases to production servers.
• Management of RedHat Linux user accounts, groups, directories and file permissions.
• Applied the Clustering Topology that meets High Availability and Failover requirement for performance and functionality.
• Configured, managed ESX VM’s with virtual center and VI client.
• Performance monitoring using Sar, Iostat, VMstat and MPstaton servers and also logged to munin monitoring tool for graphical view.
• Performed Kernel tuning with the sysctl.
• Installed packages with yum and rpm.
• Installation and configuration of PostgresSQL database on RedHat/Debian Servers.
• Performed Disk management with the help of LVM (Logical Volume Manager).
• Configuration and Administration of Apache Web Server and SSL.
• Configured open-ssl and generated self-signed keys for internal use.
• Experience with NoSQL (MongoDB)
• Password-less setup and agent-forwarding done for SSH login using ssh-keygen tool.
• Created and maintained network users, user environment, directories, and security.
• Documented strongly the steps involved for data migration on production servers and also testing procedures before the migration.
• Used RabbitMQ as the Messaging Middleware.
• Provided the support of building the server, patching, user administration tasks, deployment, software installation, performance tuning and troubleshooting and KVM.
• Provided 24/7 on call support on Linux Production Servers. Responsible for maintaining security on RedHatLinux.

Environment: Debian and Redhat Linux and SUSE Linux, VMWAREIBM blade servers,Java, Bladelogic, Websphere 5.x/6.x, Apache 1.2/1.3/2.x, Logical Volume Manager, VERITAS netback up 5.x/6.0, SAN Multipathing (MPIO, HDLM, Power path), VM ESX 3.x/2.x, RHEL 5.x/4.x and Windows Server Environment. Python, Chef, Puppet,RabbitMQ.

Confidential, Bellevue, WA

Systems Engineer (LINUX/UNIX)

RESPONSIBILITIES:

• Supported over 1000 servers in Redhat, SUSE and Cent OS.
• Worked on installation and configuration of Red hat, Cent OS and AIX servers.
• Maintenance and Monitoring of various LINUX and UNIX servers.
• Used Nagios and Cacti for the Monitoring of the servers.
• Decreased footprint and decommission services. Created a mirror copy of bare metal into a virtual environment.
• Switching production to virtual from bare metal, decommission and shutdown legacy physical servers.
• Worked on Acronis Agent Installation, backing up the Physical Server, deploying the New VM on KVM hypervisor.
• Worked on Recovery from failed restore, post deployment VM Setup.
• Worked on MySQL Migration Level, Created MySQL Master Replication Detail Plan, MySQL Slave(s) Replication Detail Plan.
• Exposed to Puppet or Chef Configuration management tools
• Create scripts to automate daily tasks like creating LAMP stack VPS’s, chrooted sftp, ZFS backup scripts, VPS load testing, SSL installations, ecommerce search engine index replication, apache-solr setup, Mysql replication.
• Monitoring and service issue resolution of LAMP stack web servers, both shared and VPS.
• Participated migration cutover meeting’s, Build and deploy Linux hardware Nodes to host several KVM templates.
• System Data and Process Architect for Service-Now Deployment.
• Worked on Puppet extensively for deployment for servers, creating on custom scripts and managing changes through Puppet master server on its clients.
• Assembled Puppet Master, Agent, and Database servers on multiple Red Hat Enterprise Linux Platforms.
• Created Global and Regional Process workflow maps and design documents.
• Led Global design team to define ITIL Framework and Global Multi Domain Service-Now Instance.
• Created and led process workshops to define customer's requirements to build out Service-Now.
• Designed and created data templates for form design and configuration.
• Installation and configuration of Apache Webserver in a LAMP stack.
• Designed multi rollout scenarios to meet corporate schedules.
• Monitoring connections and load of Apache server using mod status.
• Create LAMP based game metrics web application for real-time viewing of user activity.
• Ran Operational Readiness Testing for Incident, Problem, Change, Service Catalog, Knowledge Management
• Troubleshoot customer applications issue.
• Migration of PHP and Ruby applications to a LAMP platform using RVM
• Troubleshoot OS issue using system message logs.
• Troubleshoot NeuStar Numeri Track, Order Path, Number Manger applications issue with customer.
• Troubleshoot Web Services API, Apache Tomcat, and Corba issues
• Install packages using RPM.
• Created KSH/Bash scripts to monitor processes and making sure process startup when operating system restarts using chkconfig and RC startup levels.
• Manage user/group and sudo access on the Linux operating system.
• Setup static IP address for server when there is a new server build .
• Troubleshoot network issue from the OS stand point using netstat, ping, traceroute, and tcpdump commands.
• Open ports for applications and process that require special ports.
• Backup MySQL database by creating script to run the mysqldump and package it in a gzip file.
• Manage user and database on the MySQL database.
• Document process and procedures for system and database usage.
• Maintain team wiki and making sure all documents are in the correct format.
• Do documentations and system training to teammate and lower tier support.
• Documenting processes and troubleshooting scenarios on runbooks .
• Created a web page for internal recognition using Word Press on a Linux server with LDAP connection.

ENVIRONMENT: : Red Hat Linux 3/4, KVM, Acronis, Solaris 8, Sun Enterprise Servers, IBM RS/6000, Disk Suite, Veritas Volume Manager 4.0, LDAP, DNS, NIS, NIS +,SNMP, Shell scripting, SENDMAIL, Apache, Puppet, WebSphere, Sun and Veritas Clusters.

Confidential, Austin, TX

Linux Administrator/Engineer

Responsibilities:

• Installation of Red Hat Enterprise Linux 4.x, 5.x using Kickstart and PXE on HP Blade Servers.
• Installing, Configuring and Upgrading of the Cent OS 5.x.
• Able to configure and Install Fedora core 2 having kernel 2.6.
• Performed support role for applications on mission critical Enterprise Networks and Multi-server environments.
• Troubleshooting various issues on ssh, ftp, telnet etc.
• Implementations of automatic secure SSH Login, User and Group administration.
• Configured Printers, Print Server and Print Clients using commands like lp, lpstat, lpadmin, lpfilter & GUI.
• Updated firmware on HBA cards like qlogic and installed it on HP DL, C7000, PE Confidential R410, R610 servers.
• Virtualized Linux servers and deployed automated tasks using BMC Blade Logic Server Automation Suite.
• Samba & NFS file Server for sharing files on multiple clients.
• Patch and package administration for installation of patches as per the company policy and installation of packaged application.
• Configured iptables on Linux servers.
• Implemented Spacewalk Open Source (Red Hat Satellite Server) System management application for auto provisioning, software grouping, custom package channel, system inventory, auto deploying patches and monitoring of Red Hat Servers.
• Swap space administration.
• Responsible for developing and planning the implementation of technical downtime and recovery processes and the technical setup of downtime systems.
• Data Warehousing and System Backup using tar, cpio for local systems.
• Experience scheduling jobs with ControlM and Cron.
• Worked on POSTFIX mail server running on Red Hat Linux.
• Remote system administration using tools like SSH, Telnet, and Rlogin.
• Implemented open source base monitoring tool Nagios 3.0 for servers, SAN switches, EMC SAN Storage and VMware ESX and ESXi.
• Day to Day activities included handling security issues like stale UNIX account cleanups, 90 day password changes, setting max age and min age, creating a list of umask permission for various users.
• Ensuring data redundancy with RAID implementation.
• Shell and perl scripts to automate daily repetitive activities.
• Open ports for applications and process that require special ports.
• User, Group management for all the UNIX servers.
• Network trouble shooting using ndd, traceroute, netstat, ifconfig and snoop.
• Prepare documentations and system training to teammate and lower tier support.

Environment: Red Hat Enterprise Linux 3.x/4.x/5.x, Cent OS 5, Fedora core 2, Apache2.0, Postfix, BMC Patrol, RAID, HP DL, C7000, PE Confidential R410,R610, VMware ESX Server2.x, RA ID, FTP, NFS.

Confidential

Linux /Unix Admin

Responsibilities:

• Performed installation, configuration and maintenance of Redhat Linux 5.3.
• Handling HP and Confidential servers running on Redhat Linux and SUSE Linux 9 and GNU.
• Linux kernel memory upgrades and swaps area. Redhat Linux Kickstart Installation. Configuring DNS, DHCP, NIS, NFS in Redhat Linux other Network Services.
• Performed daily backups, restoration of data as per requests from developers using VERITAS Netback up.
• Experience in Servers consolidation and virtualization using HPSA Vsphere virtual infrastructure, HPSA Vsphere ESX.
• Wrote Shell Scripts as cron jobs and deployment scripts for various reasons in VIM editor.
• Audited the servers after the installation and prepared documents.
• Worked on EMC disk storage to allocate disk space.
• Network trouble shooting using ‘ndd’, 'traceroute', 'netstat', 'ifconfig' and 'snoop' etc
• Provided Security and troubleshoot the network issues in environment with 2500 users with VPN.
• Installed of all the required Software, patches, documentation, licensing trouble shooting.
• Network Monitoring Using Nagios tool.
• Setup various user profiles, environment variables/security to ensure smooth operation.
• Monitoring servers using BMC patrol Express.
• Good understanding of web services software architectural and design issues.
• Monitored overall system performance, performed user management, system updates and disk & storage management.
• Created users, manage user permissions, maintain User & File System quota on Redhat Linux and AIX.
• Production support of Apache and JBoss including installation, configuration, management and troubleshooting
• Implementing RAID 1 and RAID 5 on mission critical servers such as domain controllers and file servers.
• Setup of full networking services and protocols on UNIX, including NIS/NFS, DNS, SSH, DHCP, NIDS, TCP/IP, ARP, applications, kickstart and print servers to insure optimal networking, application, and printing functionality.
• Installed and configured Sudo for users to access the root privileges
• Performed troubleshooting of CPU bottle necks, memory bottle necks and gave suggestions on performance improvements. Analyzed performance issues through PERFPMR.
• Wrote Technical documentation for various projects and worked with Technical writer to finalize the documents.

Environment: Redhat Linux 4.0,5.0, HPSA Vsphere ESX Server 3.5.0, JBOSS, Remedy, EMC Power .Path, windows 2000/2003, AIX 5.3, Veritas Cluster Server, Enterprise Security Manager, Opsware, Weblogic 8.1, Oracle 9i/10g