SUMMARY:

• An IT Professional with 8 years of experience as Linux system administrator on Red Hat EL 5.x, 6.x, 7.x CentOS 4.x, 5.x,6.x,7.x,Devops, VMware ESX environment.
• Working experience in Devops concepts like Continuous Integration, Continuous delivery.
• Experience in building Server using Jumpstart, Kickstart, NIM, and Ignite Process.
• Experienced in Installation of Operating Systems, Packages and Patches, adding peripherals, maintaining user accounts, System Security maintenance, backup/recovery, performance tuning, troubleshooting at various levels etc.
• Excellent experience and knowledge with designing installing and implementing VMware ESX server, VMware virtual center, setting up V - Motion, HA, DRS.
• Experience in networking concepts like DHCP, TCP/IP, IP Addressing, NIS, NIS+, DNS, NFS, Mail Servers Networking Technologies and WLAN.
• Hand on experience on Linux Shell Scripting.
• Experience in using source control tools such as Git and SVN. And involved in activities resolving branching and merging conflicts
• Experience on patching up Unix/Linux servers and decommissioning unwanted old servers using virtualization techniques to make the client environment more authentic and cost-effective.
• Worked with Red Hat Linux V5, 6 &7of heavy experience in install / rebuild servers. Understanding the business requirements, capacity planning, Vendor management, team co-ordination, business migration. Patching and Packages rollouts. Experience in using Version Control Tools like GIT and SVN.
• Experience in Configuring & Administering SAN Devices and other storage solutions like Veritas DMP.
• Experience in Logical Volume Manager for creation of Volume groups / Logical Volumes and File systems in UNIX environment.
• Experience in administering and configuring Nexus Repository Manager for Maven builds.
• Installation Configuration and Administration of Veritas Volume Manager, Red Hat Cluster Server, Veritas Cluster Server 5.0 using EXT3, EXT4, GFS, ZFS, XFS.
• Performed numerous server migrations on both Unix/Linux servers. Migrations include moving all clients and their data, configuration settings, testing and verifying everything is correct with zero downtime.
• Knowledge about Microsoft Azure in creating cloud environment and managing the application servers across Microsoft managed global data centers.
• Maintain and Monitoring the DC, ADC, DNS, DHCP and Exchange Servers and FTP Servers.
• Extensive experience with Kickstart in Redhat Linux, Jumpstart in Solaris, Ignite in HP-UX.
• Hands on experience in configuration management systems like Puppet, Cobbler and Blade logic.
• Installation and configuration of Oracle RAC 11g on Solaris, AIX and Red Hat cluster nodes.
• Proficient in shell scripting (Ksh/Csh/bash/Sed/Awk), PERL, Java Scripts for Oracle and Java Applications and XML.
• 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. Excellent knowledge of clustering techniques to ensure high availability and GFS deployment.
• Experienced in implementing and administering VMs using VMware ESX 4.x, 5.x, 6.x, vCenter and building KVM Hypervisor.
• Excellent knowledge of load balancing and clustering techniques to ensure high availability.
• Experience in Installing, upgrading and configuring RedHat Linux using Kickstart Servers and Interactive Installation.
• Good knowledge on various cloud computing products such as Amazon EC2, Openstack.
• Administrating virtual machines and hosts in VMware.
• Install, and configure VMware ESXi 5.5 with Virtual Center management, Vmotion, Storage Vmotion etc.
• Creation of different port groups like VMkernel and VM port group. Worked on Cloning, Snapshots and Templates.
• VMware vCenter Operations Manager deployment for Cloud infrastructure performance.
• Working experience on VMware clustering like HA and DRS clusters using Virtual Center.
• Working experience on End to End process including ordering for hardware, installation, configuration.
• Install and configure Host VMWare ESXi5.5 and ESXi6, Install and manage vcenter6, VMware infrastructure build and daily ongoing support
• Experience in installation and configuration of a monitoring tool, Nagios and Zabbix.
• Experience working in SAN environment like EMC Symmetrix DMX3, DMX4 &Clariion CX3 series arrays.
• Creating Linux Virtual Machines using VMware Virtual Center and AIX LPARs on P550 and P570.
• Security management like performing security health checks as per policies / procedures, patching the servers based on the advisories for the applications and operating systems. Experience with Veritas Cluster Server and Veritas NetBackup.
• Experience in installation and configuration of Apache, Tomcat, Websphere, and JBoss.
• Hands on experience with RAID using Volume Management Software like Logical Volume Manager, Veritas Volume Manager, Solaris Volume Manager.
• Experienced in all facets of full CM process with tools such as SVN, GIT, PVCS, Clear Case, Clear Quest, Perforce, Cruise Control, Jenkins, Bamboo, Chef and Puppet.
• Expertise in Querying RDBMS such as Oracle, MY SQL and SQL Server by using PL/SQL for data integrity
• Extensive experience in all phases of Software Development Life Cycle with emphasis in designing, developing, implementation, deployment and support of distributed enterprise scalable, secure and transactional J2EE applications.

SKILL:

OPERATING SYSTEMS: RHEL 5.x, 6.x, 7, Sun Solaris 10/9/8, IBM-AIX, HP-UX, and Windows 2012/2008 R2/2003/2000 Server, VMware ESX, Solaris, MS Windows server, Mac OS, SUSE.

HARDWARE& SOFTWARE: HP Proliant, Cisco UCS, Dell, Red Hat Cluster Suite Veritas cluster server 3.x, 4.x, 5.x, 6.x, Veritas volume manager 3.5, 4.x, 5.x, Veritas file system, Veritas Cluster File system, Veritas netback up), VMware ESX 3.5, vSphere 4.0. 5.5, 6.0&6.5

NETWORK PROTOCOLS: DHCP, DIG, DNS, SNMP, SMTP, Ethernet, IOS, netstat, NFS, NIS, nslookup, RIP, OSPF, BGP, TCP/IP and tcpdump. Network Essentials-OSI, LAN/WAN, Switches, Hubs, Fiber Channel, SAN, NAS, ISCSI.

SCRIPTING: Unix Shell Script, PERL, JACL, JYTHON.

DATABASES: Oracle 11g/10g/9g/8g, DB2UDB 9.0/8.0, Microsoft SQL Server 2008/2003/2000 and MS Access 2000.

APPLICATION SERVER/WEB SERVERS: WebSphere 7.0IBM HTTP Server 6, Apache 2.0, Apache Tomcat 6.0/5.0, Oracle and Jboss EAP 6.

AUTOMATION TOOLS: Ansible, Puppet, and chef

VIRTUALIZATION TECHNOLOGIES: VMware, Docker, and vagrant

SOURCE CONTROL TECHNOLOGIES: GIT hub, CVS and Subversion(SVN)

MONITORING TOOLS: Nagios and Zabbix

PROFESSIONAL EXPERIENCE:

Confidential, Mayfield, Ohio

UNIX/Linux and VMware Sys Admin

Responsibilities:

• Installing, tuning, troubleshooting and patching of Red Hat Enterprise Linux servers.
• Scheduled various regular, periodic, future and queue tasks by using crontab.
• NFS management - take care of user accounts/groups, setting up of NFS environment.
• Transferring files from one system to other using FTP and SFTP.
• Launching Amazon EC2 Cloud Instances using Amazon Web Services (Linux/Centos/Ubuntu/RHEL) and Configuring launched instances with respect to specific applications.
• Worked in an agile development team to deliver an end to end continuous integration/continuous delivery product in an open source environment using tools like puppet & Jenkins. Managed and optimized Continuous Delivery tools like Jenkins.
• Was managing user accounts for the team access for Red Hat Satellite Server. created RPM packages using RPMBUILD, verifying the new build packages and distributing the package.Worked on SAN/EMC storages with HBA card configuration and different level of RAID configuration.
• Managing GIT version control system in creating branches, tags, merge, resolving conflicts.
• UCS and VMware installation/configuration/troubleshoot.
• Implementation of RAID techniques and the creation of Disk groups and volumes, plex using Veritas Volume manager.
• Troubleshooting problems with hardware and operating systems on multiple platforms working with multiple vendors to repair.
• Installation of software on multiple platforms using Ansible.
• Extensive use of Logical Volume Manager (LVM), creating Volume Groups, Logical volumes and disk mirroring in Red Hat Linux, HP-UX and AIX.
• Day to day trouble shooting for end users on UNIX/LINUX. Configured NFS and Open LDAP services in Red Hat Linux and Solaris systems.
• Experience in Setting up and configuring Install Server, Configuration Server and Boot Server for Kickstart process.
• Performed setting up Configuration Server and Boot Server for Jumpstart process.
• Installed and configured Red Hat Linux using Satellite Server.
• Responsible for build and deployment automation using VM WareESX, Docker, Kubernetes containers and Ansible.
• Maintaining the security groups in EC2, EC2 VPC and controlling the inbound and outbound traffic that are allowed to reach the instances
• Automating Web Sphere EAR file deploys through Cruise Control, Jenkins, Team City.
• Repeatedly worked on AWS Cloud platform and its features which includes EC2, VPC, EBS, AMI, SNS, RDS, EBS, S3, DynamoDB, ElastiCache, IAM, Cloud Formation, OpsWorks, Cloud Watch. Responsible for Installing of OS on Several hundred Servers using Ansible.
• Expertise in Installing, administering, troubleshooting NFS, DNS, DHCP, NIS, LDAP Mail Server, Send Mail and Samba Server.
• Experience in configuring LAMP stack. Experience in using various network protocols like SSH, SCP, SFTP, HTTP, UDP, POP, FTP, TCP/IP and SMTP.
• Installed application on AWS EC2 instances and configured the storage on S3 buckets.
• Built and Deployed Java/J2EE to Tomcat Application servers in an Agile continuous integration process and automated process.
• Written Chef Cookbooks for various DB configurations to modularize & optimize product configuration.
• Branching, Tagging, Release Activities on Version Control Tools: SVN, GitHub.
• Experience in using GIT and Rational Clear case on UNIX and Windows environment.
• Maintaining the Security groups and setting up the rules for instances that are associated to the security groups.
• Worked on RPM and YUM package installations, patch and another server management.
• Application Deployments & Environment configuration using Chef, Saltstack and Ansible.
• Setting up Jenkins, CircleCI Continuous Integration (CI) and Deployment builds for all releases on windows and Linux Debian.
• Architecting and deploying Splunk Enterprise implementations in medium to large sized customers.
• Virtualized the servers using the Docker for the test environments and dev-environments needs. And also, configuration automation using Docker containers, mesos, marathon and microservices. Worked with various scripting languages like Shell, Ruby, Perl and Python.
• Configure Linux Redhat servers with Kickstart, LDAP, DNS, and DHCP and connect to Network. Integration of Windows Active Directory with Linux/Unix Servers.
• Provided support to UNIX servers and troubleshooting of day to day problem.
• Configured Linux Redhat servers with kickstart, LDAP, DNS, and DHCP to connect to Network
• Experienced with the installation, configuration and volume/File system management using Veritas Volume Manager, Logical Volume Manager (LVM) and Solstice Disk Suite (Solaris Volume Manager).Managing User and Group Administration.
• Disk administration, Creating File systems, mounting / Un-mounting file systems. Setting up the file and Directory Permissions.
• Installation and configuration of Yum and Rpm Packages. Implemented NFS, DNS and NIS under Linux.
• Administrative tasks such as System Startup/shutdown, Backup strategy, User Management, Security, Network management and devices carried out.
• Write bash shell scripts for getting information about various Linux servers.
• Installation of ESX server and creation of VMs and install different guest OS.
• Monitoring and managing performance of ESX servers and Virtual Machines.
• Snapshots of Virtual Machines as when required. Running patches and updates through update manager for the ESXi hosts.
• Creation of templates from VMs and Creation of VMs from templates.Performed the administration of the DNS Server and configuration of the Database Files.
• Monitor overall system performance, performed user management, system updates and disk & storage management.
• Configured and troubleshoot the network file systems (NFS), ZFS, zones, and network information service (NIS) environment.
• Configuring SUDO access to users for all servers with Kerberos. Trouble shooting on tickets related to SUDO, LDAP and active director
• Failover, clustering and Load balancing using BigIP. Installation and configuration of Veritas Cluster with 8 node cluster.
• Performed Data Backup and Recovery using Veritas Net Backup (VNB).
• Update the systems using Redhat Enterprise Network (RHN), Managing and monitoring through RHN).

Confidential, Boca Raton, Florida

System Administrator (Linux & VMware)

Responsibilities:

• User administration, management & archiving. Performed automated installations of Operating System using Jumpstart, Kickstart for Linux.
• Installation of patches and packages.
• Installation and configuration of Apache, WebSphere.
• Disk and File system management through LVM (HP-UX, AIX, Linux).
• Experience with configuring, managing Virtual disks, Disk Mirrors and RAID 0-5.
• Provided functional and technical support, troubleshooting and diagnosing hardware and software problems, including desktop, laptop, WAN, LAN.
• Worked with Ansible, Chef recipes to configure, deploy and maintain software components of the existing infrastructure.
• Integrated Maven with Subversion to manage and deploy project related tags.
• Installed and Configured chef server/workstation and nodes via CLI tools to AWS nodes. Managed and Monitored the instances (chef clients) on AWS EC2.
• Written several cookbooks in Chef to automate the environment provisioning, Middleware Infrastructure Installations.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Patch Management, Package Installation/Upgrades and Kernel upgrades.
• Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
• Experienced in Technical and troubleshooting skills with relational databases (Postgres, Mysql
• Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
• Installed/Configured the WebSphere server and JBoss EAP; Managed tuning and performance of high profile applications running on them.
• Configuration and Administration of Load balancers and F5's, taking servers in/out of rotation.
• Scripts written in BASH and Perl for the Automation of Post-Build Steps and Basic Hardening.
• Software package and patch administration, involving adding and removing software packages and updating patches.
• Handling problems or requirements as per the ticket (Request Tracker) created.
• Configuration and administration of LDAP, NFS and NIS in Linux and also implemented Samba for sharing of resources between Linux and Windows environments.
• Installed, configured and upgraded Ubuntu .04 & Installed Ubuntu 15.04 on 30,000 workstations
• Upgraded Ubuntu OS from .04 using RAM disk
• Ubuntu operating system development - including package building, patching, and installation
• Worked with Ansible playbooks for virtual and physical instance provisioning, configuration management, patching and software deployment.
• Experience working with Puppet Enterprise and Puppet Open Source. Installed, configured, upgraded and managed Puppet Master, Agents & Databases. Integration of Puppet with Apache and Passenger.
• Installed, Configured, Managed Monitoring Tools such as Splunk, Nagios, for Resource Monitoring/Network Monitoring/Log Trace Monitoring.
• Good in writing Bash Scripts for deployment of Java applications on bare servers or Middleware tools.
• Day to day administration of the Development environment and Production and Test environment systems. 24x7 on-call support. Strong appetite for learning new technologies with positive attitude.
• Leveraged Docker Engine to run Multiple Tomcat Instances as Containerized App Servers
• Installed Jenkins/ Plugins for GIT Repository, Setup SCM Polling for Immediate Build with Maven and Maven Repository (Nexus Artifactory) and Deployed Apps using custom ruby modules through Puppet as a CI/CD Process.
• Installed and configured VMware ESX server instances for virtual server setup and deployment.
• Use Nagios/Zabbix monitoring for 24*7 server uptime, alerts, and troubleshoot issues as per SLA.
• Configure NIC teaming at ESXi server level for redundancy & Perform P2V, V2V migrations using VM Convertor
• Good understanding of the RemedyForce application data models and object schema
• Create, manage and configure VMs, cloning, deploying VM's to template and templates to VM's.
• Working on more than 90% virtualized VMware environment. Virtualization monitoring and performance planning.
• Build new ESXi hosts and perform migration of all the VMs from ESXi 5.1 to 5.5 and 6.0.
• Co-ordinate with the network team to plan the network structure for the new ESXi hosts like number of NICs, vLANs, subnets etc. Configure NIC teaming at ESXi server level for redundancy. Installation of vCenter server and configuring ESXi hosts within the cluster using VMotion and HA.
• Implement and manage VMware Servers and design solutions based on VMware. Building VM's and new templates for different projects.
• Create, manage and configure VMs, cloning, deploying VM's to template and templates to VM's. Perform P2V, V2V migrations using VM Convertor.
• Hands on experience and understanding in the strategy and implementation of AWS cloud-specific technologies like Elastic Compute Cloud (EC2), Simple Storage Services (S3), Route 53, Cloud Formation, Elastic IPs, Virtual Private Cloud (VPC), RDS, Cloud Watch, Dynamo DB, IAM, Bean Stalk, Cloud Front, API.
• Managed users and groups for secured access to AWS services and products with AWS Identity and Access Management (IAM).
• Performed DevOps for Linux and Windows platforms and Focused on automation and integration
• Worked with Ansible in conjunction with Vagrant in a DevOps environment.
• Worked on Python Open stack API's.Used Python scripts to update content in the database and manipulate files.
• Used Python and Django creating graphics, XML processing, data exchange and business logic implementation

Confidential, El Segundo, California

Linux, VMware Sys Admin

Responsibilities:

• Experienced on LVM and worked with NFS file system.
• Installation and Configuration of Redhat, CentOS, Solaris, SUSE SLES 10,11 servers.
• Patching of RHEL5 and Solaris 10 servers for EMC Power Path Upgrade for VMAX migration.
• Documented the standard procedure for installation and deployment of VMAX Migration and logical volume manager.
• Installation, configuration, support and security implementation on following services: DHCP, SSH, SCP.
• Working with Blade logic environment.
• Generating keys of SUDO and copying to remote servers
• I wrote the ansible playbooks which is the entry point for Ansible provisioning, where the automation is defined through tasks using YAML format. Run Ansible Scripts to provision Dev servers.
• Installation/administration of AIX, Linux and NT/2000 Servers on a LAN, setting up optimal RAID levels (fault tolerance) for protected data storage in NAS environments.Jumpstart & Kick-start OS integration, DNS, DHCP, SMTP, Samba, NFS, FTP, SSH, LDAP integration.
• Responsible for configuring real time backup of web servers. Log file was managed for troubleshooting.
• Applied the Redhat Clustering Topology that meets High Availability and Failover requirement for performance and functionality.
• Implemented Horizontal and Vertical Clustering, Performance tuning and trouble shooting of IBM WebSphere Application Server 7.0/8.0.
• One to zone migration, zone to LDOM conversion. Move/upgrade GE Healthcare applications across systems;
• Configuring printers to the Solaris and Linux servers and also installing third party softwares.
• Maintaining relations with project managers, DBA’s, Developers, Application support teams and operational support teams to facilitate effective project deployment.
• Manage system installation, troubleshooting, maintenance, performance tuning, managing storage resources, network configuration to fit application and database requirements.
• Configuration of LVM (Logical Volume Manager) to manage volume group, logical and physical partitions and importing new physical volumes.
• Responsible for Building of Linux/Solaris OS servers using kickstart /jumpstart automation application.
• Performing Post Build activities like Setting up Backup interface/ NIC bonding/ Loading additional Packages/ Joining the server to Active Directory, etc.
• Performed regular installation of patches using RPM and YUM.
• Configuration and administration of NFS and Samba in Linux and Solaris.
• Experienced in using advanced PostgreSQL/MYSQL features like table partitioning and different types of oracle indexing. Backup and Restore experience with PostgreSQL/MySQL database backups and point in time recovery.
• Worked on Puppet environments to write manifests.
• Maintained and monitored all of company's servers’ operating system and application patch level, disk space and memory usage, user activities on day-to-day basis.
• Experience in installation and configuration of a monitoring tool, Nagios and Zabbix.
• Installed and Configured Tomcat and Jboss for Web Application deployment.
• Creation of VMs, cloning and migrations of the VMs on VMware vSphere.
• Worked with DBA team for database performance issues, network related issue on Linux / Unix Servers and with vendors for hardware related issues.
• Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
• Managed and upgraded UNIX’s server services such as Bind DNS.
• Configuration and administration of Web (Apache), DHCP and FTP Servers in Linux and Solaris servers.
• Supported the backup environments running VERITAS Net Backup.Responsible for setting cron jobs on the servers.
• Decommissioning of the old servers and keeping track or decommissioned and new servers using inventory list.
• Handling problems or requirements as per the ticket (Request Tracker) created.
• Participated in on-call rotation to provide 24X7 technical supports.
• Involved in Patching ESXi hosts using VMWare Update Manager.
• Planned disaster recovery and implemented recovery by Creating Protection Groups and Recovery Plans in VMware SRM
• Installing, managing and troubleshooting ESXi servers & Configured vSphere Replication on Virtual Machine
• Built Windows 2008/2003Servers on standalone and blade servers based on application design and deployed stack on these servers using CA unicenter software deployment.
• Installed VMware ESX, Configured VMware on clustered environment, Implemented VMotion, Virtualized Windows servers using VMware Converter P2V, V2V and setup Lab Manager
• Installation of vCenter server and its components and configuring ESXihost’s within the cluster using vMotion and HA.
• Management of capacity planning for new clusters, ESXi and VM storage issues.
• Responsible for Managing VMware connectivity with shared storage (SAN) solutions
• VMware administration - Implementation, Multi-pathing, Performance tuning & capacity management.
• Worked with UCS Manager to configure IP Pools, VLAN’s, and vNICs, Boot Policies, Server Pools, VSAN, VHBA, KVM Access and Management Console. Also, Configured Service Profiles on UCS Server
• Monitored VMWare vSphere 5.1 environment for data store utilization, snapshots, and VMs connected to vCD/DVDs and any other issues, de commissioning of VMs and reclaiming resources.
• Responsible for configuration and management of VMware vCenter, VMware HA, Automated provisioning and VMware clustering.
• Responsible for Managing VMware connectivity with shared storage (SAN) solutions.

Confidential, Iowa

System Admin

Responsibilities:

• Installation and Configuration of Redhat, CentOS, Solaris,
• Installation, configuration and management of Apache and Tomcat servers.
• Network traffic control, IPsec, Quos, VLAN, Proxy, Radius integration on Cisco Hardware via Red Hat Linux Software.
• Responsible for configuring and managing Squid server in Linux.
• Configuration and Administration of NIS environment. Troubleshooting the system and end user issues.
• Managing file systems and disk management using Solstice Disk suite.
• Involved in Installing and configuring of NFS and also package and patch management on Sun servers.
• Kernel tuning, Writing Shell scripts for system maintenance and file management.
• Worked on Solaris volume manager to create file systems as per user and database requirements.
• Performing Nessus Scan on quarterly basis to scan for vulnerabilities in Web and Application servers.
• Applying patches to fix the holes that are found during the quarterly scan basis using Nessus scan.
• Upgraded and maintained servers, operating Systems and patches.
• Install/configure/maintain the Linux /Solaris servers, NIS, DNS, NFS, Mailing List, Sendmail, apache, ftp, sshd.
• Configuring and optimizing open-iSCSI in RHES for SAN using iOmega technology.
• Install host firewall IPTables for Redhat Linux. Installed and configured SAMBA server for Windows and Linux
• Performed TCP/IP, DNS and DHCP administration.Setting up Oracle 10g server in Linux/Unix environment.
• Create Active Directory users and groups, including delegating authority and applying permissions to various member servers’ nomenclature.
• Building VM’s and new templates for and allocating them to appropriate resource pools.
• Installation of VMware tools, perform P2V, V2V migrations using VM Convertor.
• Participated in installation and configuration of vCenter server, and vSphere licensing.
• Updating and upgrading ESXi servers using vCenter update manager.
• Supported Oracle DBA in the implementation of Oracle 9i RAC.
• Administering and Performance Tuning of IBM products like Websphere application server.
• Maintained and monitored all of company's servers’ operating system and application patch level, disk space and memory usage, user activities on day-to-day basis.
• Performed routine LVM tasks like replacing failed drives, adding new volume groups, extending volume groups/LVM/file system, exporting and importing volume group for hardware migration.
• Administered Backup and Restore operations using Veritas NetBackup 5.1.
• Monitored and fine tuning system and network performance for server environments running Redhat Linux, Solaris.