SUMMARY:

• 8 years of experience in Installation, Configuration, Management of Linux OS (RHEL, CentOS, Ubuntu), Amazon Web Services (AWS), Windows Servers in an Agile environment and engineering the automation of OS in a DevOps environment such as (DEV, TEST, STAGE & PROD).
• Experience in System Administration, System Builds, Server builds, Installs, Upgrades, Patches, Migration, Troubleshooting, Security, Backup, Disaster Recovery, Performance Monitoring and Fine - tuning on UNIX Red Hat Linux Systems.
• Extensively worked with VMware ESXi 5.1/5.5/6.0, vCenter Server, Host Clustering with HA, DRS, Replication Manager 5.x/6.0, Site Recovery Manager, vMotion, Physical to Virtual Migration and Managing SAN Datastores with, iSCSI, NFS & FC.
• Created and maintained user accounts, profiles, security, rights, disk space and process monitoring.
• Worked on version controls like GIT and SVN. Worked on Agile Methodologies.
• Have good hands on experience on some of the monitoring tools like Nagios, Splunk and Zabbix.
• Extensively written bash script for various tasks automation.
• Have good hands on experience working on Cloud platforms like VMWARE vCaC and Amazon Web Services.
• Expertise in VMWARE virtual environment.
• Have good experience on various Devops tools.
• Performed Remote system administration using Network protocol tools like ssh, http, rsh, telnet, scp, ftp, sftp, ssl, RSA secure connection and Rlogins.
• Experienced in documenting and supporting high availability, business persistence, fail-over, fail-back.
• Configured Networks using DNS, NIS, NFS, FTP and DHCP, troubleshooting network problems such as Sub netting, Routing, Firewall related on TCP/IP providing support for users in solving their problems.
• Experience in installing and configuring Kick start in Linux.
• Day to day job included but not limited to handling Tickets, Monitoring, Troubleshooting and maintenance.
• Deployed Docker Engines in Virtualized Platforms for containerization of multiple apps.
• Extensive experience using MAVEN and ANT as build tools for the building of deployable artifacts (jar, war & ear) from source code.
• Managed all the bugs and changes into a production environment using the Jira tracking tool.
• Involved in setting up JIRA as defect tracking system and configured various workflows, customizations and plugins for the JIRA bug/issue tracker.
• Installed and managed Middleware tools through Puppet such as WebSphere Application Server 7.x/8.x, JBOSS GA7/EAP6, IBM IHS, Apache & Tomcat.
• 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.
• Created Custom as well as downloaded pre-written Modules and Manifests, Worked and utilized Puppet hierarchy files, facts, and global variables.
• Experience in working on source control tools like Tortoise SVN, CVS, IBM Clear Case, Perforce & GIT.
• Strong knowledge on source controller concepts like Branches, Merges and Tags.
• Extensively worked on Jenkins/Hudson by installing, configuring and maintaining for the purpose of continuous integration (CI) and for End to End automation for all build and deployments.
• Managed Amazon Web Services like EC2, S3 bucket, RDS, EBS, ELB, Auto-Scaling, AMI, IAM through AWS Console and API Integration with Puppet Code.
• Worked with Chef Enterprise Hosted as well as On-Premise, Installed Workstation, Bootstrapped Nodes, Wrote Recipes and Cookbooks and uploaded them to Chef-server, Managed On-site OS/Applications/Services/Packages using Chef as well as AWS for EC2/S3/Route53 & ELB with Chef Cookbooks.
• Experience NIC bonding/NIC Teaming configuration in Linux/UNIX/Windows/VMware systems to increase the bandwidth or redundancy based on requirement by the application.
• Managing DNS, LDAP, FTP, Tomcat & Apache web servers on Linux servers.
• Expertise in implementation and maintenance of Apache Httpd, SMTP, DHCP, NFS, NIS, NIS+, LDAP, DNS, SAMBA, SQUID, Postfix, send mail, FTP, Remote Access, Security Management & Security trouble shooting skills.
• Experienced with the installation, configuration of volume management using VERITAS Volume Manager 5.1/6.0 and Solstice Disk Suite on Solaris and experienced in RAID configurations.
• Experience in Backup Tools like NetBackup, Veeam Backup and Replication Suite.
• Installed, Configured, Managed Monitoring Tools such as Splunk, Nagios, iCinga for Resource Monitoring/Network Monitoring/Log Trace Monitoring.
• Expertise in writing Bash Scripts, Pearl Scripts (hash and arrays), Python programing for deployment of Java applications on bare servers or Middleware tools.
• Installation, Configuration and Management of RDBMS and NoSQL tools such as SQL Server 2008/2012/2014 , MySQL, DB2, PostgreSQL, MongoDB and Cassandra.
• 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.

SKILL:

Operating Systems: RHEL/CentOS 5.x/6.x/7, Ubuntu/Debian/Fedora, Sun Solaris 7/8/9/10, Windows Server 2003/2008/2012

Build/Automation Tools: Puppet, Chef, Ant, Maven, Jenkins, Hudson &Bambo

Languages: Shell, Bash, Perl, Ruby and Python scripting

Databases: MySql, MongoDB, Cassandra, PostgreSQL, SQL Server

Web/App Server: Apache, IIS, HIS, Tomcat, WebSphere Application Server, JBoss

Bug Tracking Tools: JIRA, Fisheye, Crucible, Rally, Remedy and IBM Clear Quest, Bugzilla, HP Quality Center

Version Control Tools: Subversion, GIT, Tortoise SVN, Visual SVN

Web Technologies/Languages: Servlets, JDBC, JSP, XML, HTML, .Net, Java Script, Java/J2EE, C, C++, Ruby, Perl scripting, Python, Shell, Bash scripting.

Monitoring: Sysmon, MRTG, Nagios, Zenoss

E: Mail servers QMail, Postfix

EXPERIENCE:

Confidential, Lowell, Arkansas

Sr. Systems Admin(Linux, Devops, VMware)

Responsibilities:

• Installed, Deployed Red Hat Enterprise Linux 6.x/7.x, CentOS and installation of packages and patches for Red Hat Linux Servers.
• Assisted in administering VMware SRM to accommodate virtual machine replication.
• Performed vMotion and Storage vMotion of VMDK and VMF files to target landing zones.
• Performed p2v of standalone Windows 2008/2012 R2 machines to virtual instances using VM converter and Platespin.
• Leveraged Docker Engine to run Multiple Tomcat Instances as Containerized AppServers.
• Team role included working in VMware Orchestrator, VMware vRealize Automation Center 6.0 (vRA) catalog management creating cloud server provisioning entitlements, creating and defining business groups, creating catalog items, creating services for the catalog items, creating Windows 2008/2012) and Linux (Red Hat6) blueprints.
• Migrated VMWARE VMs to AWS and Managed Services like EC2, S3 Bucket, Route53, ELB, EBS with OpsCode Chef Cookbooks/Recipes.
• Experienced in Red Hat Linux package administration using RPM and YUM.
• Built S3 buckets and managed policies for S3 buckets and used S3 bucket and Glacier for storage and backup on AWS
• Disk space management, LVM, Mirroring, User & System Resource management, Paging Space management, job scheduling.
• Creating new file systems, monitoring disk usage, checking and backup of log files administration and monitoring the disk based file system.
• Strong understanding of infrastructure automation tooling using Docker and Ansible.
• Installation, Configuration and Administration of Web logic, Web sphere and Apache Servers in Linux and Solaris Servers.
• Installed Chef-Server Enterprise On-Premise/WorkStation/ Bootstrapped the Nodes using Knife.
• Administered and Engineered Jenkins for managing weekly Build, Test and Deploy chain, SVN/GIT with Devel/Test/Prod Branching Model for weekly releases
• Automated Weekly releases with ANT/Maven scripting for Compiling, Debugging and Placing Builds into Maven Repository.
• Worked on Integration and Production AWS environments.
• Configured SSL/TLS in every application layer and configuration of mutual authentication, manually using puppet.
• Experience in System Administration, System Builds, Server builds, Installs, Upgrades, Patches, Migration, Trouble Shooting, Security, Backup, Disaster Recovery, Performance Monitoring and Fine-tuning on Red Hat Linux Systems.
• Installing, upgrading, maintaining and configuring Red Hat Enterprise Linux on Servers using Custom and kick start installation.
• Worked with file/disk encryption technology/products on servers, Data Security tools, and File System Encryption.
• Installation of RPM packages to upgrade Linux packages.
• Wrote Scripts to Monitor Variety of Services & Hash/Arrays to Insert/Delete/Modify content in multiple servers.
• Implemented multi Node OpenStack KILO Architecture on KVM Using Latest Release of Ubuntu with Services like Horizon, Nova, Neutron, Glance, Cinder, Keystone & Swift.
• Installation, Configuration, and Administration of Websphere and Apache Servers
• Having production experience supporting and deploying to web application servers such as BEA WebLogic, RedHat JBoss, Apache,Tomcat, and Apache HTTPD servers.
• Created Word documents for Installation Process of Application on different platform like Linux and Windows and uploaded on SharePoint.
• Created Wiki for Installation and Migration of servers in Virtualization environment and cloud environment.
• Managed Run Books for Migration and Decommission of Server (Linux and Windows )
• Tune Linux kernel using kernel parameters as requested by database administrator. Configured Kernel Parameters for Oracle database install
• Conducted Linux System security and auditing and did Performance Monitoring and Tuning.
• Worked on Solaris container Technology; Created local and global zones
• Solaris zones configuration for application; Server Build from the scratch with CD and Automated Installation; Implemented Security Hardening per company policy; Trouble shooting system and user problems
• Added Service Groups and resources based on the requirement with appropriate dependencies, Documented the in change design/Architecture diagram of Veritas Cluster Servers
• Automate infrastructure using chef to manage and deploy private cloud instances
• Setup and Install Chef workstation, Chef Server and bootstrapping the Chef Clients using knife
• Deploy Apache/Tomcat applications using chef.
• Performed Continuous Integration, Building and administrating using Jenkins.
• Provided administrative supports and performed branching and merging operations using GIT
• Used Bash, Perl, and Python shell scripting for monitoring and to automate the build and deployment process.
• Creating customized Kickstart profiles for each server and making ISO to build the server.
• Applied patches every quarter regularly to meet audit requirements using Oracle Ops Center, Red Hat Satellite server, Up2Date, YUM, RPM tools.
• Configure services running on Red Hat Enterprise Linux deployed through CloudForms and Red Hat Satellite.
• Installing RPM packages on Red hat Linux Security Servers and applying patching on RHEL 6 & 7 versions
• Performance Tuning and Management for Linux/AIX server and working with the application/database team to resolve issues.
• Worked on resolving production issues and documenting Root Cause Analysis and updating the tickets using BMC Remedy
• Worked on Installation/Configuration/Administrated VMware ESXi 5.1/5.5 & 6.0 and migrated existing servers into VMware Infrastructure.
• Virtualized the servers using Docker for the test environments and dev-environments needs, also configuration automation using Docker containers
• Scripted Ansible Playbooks to manage configurations of AWS Nodes and test Playbooks on AWS instances other operational tasks using Ansible.
• Used CI/CD tools Jenkins, GIT, Jira, and Docker registry/daemon for configuration management and automation using Ansible.
• Installation of custom Docker container images, tagging and pushing the images.
• Worked on creating the Docker containers and Docker consoles for managing the application life cycle.
• Working on Ansible Playbooks for mapping of hosts to a set of roles.
• Reporting to management on incidents; find problematic servers and act on resolution
• Worked with JIRA for creating Projects, assigning permissions to users and groups for the projects & Created Mail handlers and notification Schemes for JIRA.
• Scanning the newly assigned LUNs to the serves and assigning them to volume group and increasing the file system using Red Hat volume manager.
• Mounting & un-mounting the NetAPP storage LUNs to the Red Hat Linux servers and troubleshooting the issues encountered.
• Planned and performed the upgrades on Linux and AIX operating systems and hardware maintenance on HP and POWER servers like increasing memory, disk, replacing failed hardware.
• Provide drill down reporting for application teams to use in monitoring their application resource usage/performance.

Confidential, Houston Texas

System Administrator (Linux, VMware)

Responsibilities:

• Creating the server profile and making the network and SAN virtual configuration using Virtual Connect in blade center C7000.
• Creating the filesystems using RedHat volume manager and performing the health check on regular basis for all Linux serves.
• Scanning the newly assigned LUNs to the serves and assigning them to volume group and increasing the filesystem using RedHat volume manager.
• Build, Configure, upgrade and Install Red Hat 5/6/7, OS on physical and virtual servers.
• Troubleshoot build, install, configuration, performance, monitoring and other process issues of the servers and the selected application environments.
• Responsible for the support of around 1200 UNIX servers in Development, Production and DR environments.
• Experience in managing Linux production servers using VMware vSphere client.
• Deploying the Redhat Linux enterprise server as like existing versions 5.x, 6.x versions.
• Creating the VM shell and pushing the operating system using the kickstart server.
• Creation of Kickstart images for the different version of Redhat Linux Operating system like 5.x & 6.x
• HP blade center C7000 hardware management using ILO console.
• Creating Link aggregation (LACP) with VLAN tunneling using virtual connect (VC).
• Share uplink set using LACP & VLAN tagging.
• As a member of the team, monitored the VERITAS Cluster Server in SAN Environment.
• Installation of node VERITAS clusters on Cisco USC Hardware, Configuring of Multipathing, I/O fencing, Service groups, Network bonding and heartbeat of cluster .
• Troubleshooting on incidents tickets related to Veritas cluster.
• Performance Tuning and Management for Linux/AIX server and working with the application/database team to resolve issues.
• Configuration of NIS, NFS, SAMBA, SENDMAIL, APACHE SERVICES on Linux & UNIX environment.
• Expertise in Installations, Kernel Upgrades, Patches, Configuration, Performance tuning on UNIX system software & hardware. Performed day-to-day admin activities like managing LVM disks, file systems, user creation.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP.
• Tuning the Kernel parameters for the better performance of applications like Oracle, WebLogic etc.
• Installing, configuring, stop and start scripts as Service for various 3rd party applications apache/HTTPD, Tomcat, java, oracle client and WebLogic hosted on RHEL.
• Creating the filesystem and RAW logical volumes for the Oracle RAC based on the requirement.
• Upgrading the kernel in all the Redhat Linux servers and creating images to boot from the Upgraded kernel.
• Migration of RedhatLinux servers to 6.x version and working with the application team to resolve the issues post migration.
• Troubleshoot the build issue during the Jenkins build process.
• Fixing the OS Patching related issue and pre-& post patching validation.
• Installations & Upgrading RPM and yum packages, patch and other server management.
• Installed puppet agents on Linux servers and configure to communicate with Master Puppet Server.
• Implement and manage continuous delivery systems and methodologies on AWS.
• Maintained Virtual private cloud (VPC) using AWS and resources like Route53, Nat Gateway, RDS.
• Worked onNAS and SAN concepts and technology. Also got knowledge in HA, Clustering, LAN
• Responsible for setting up a disaster recovery plan for the servers, which includes in development of programs for synchronized backups
• Written Ansible playbooks which is the entry point for Ansible provisioning, where the automation is defined through tasks using YAML format.
• Wrote Ansible Playbooks with PythonSSH as the Wrapper to Manage Configurations of AWS Nodes and Test Playbooks on AWS instances using Python.
• Worked on installing and configuring VMware/Esx Servers for virtualizations
• Knowledge and experience on Kerberos setup
• Configured and maintained Network Multipathing in Solaris and Linux.
• Installation/Configuration of ESXi 3.5, 4.x servers and applying security patches to the ESXi servers.
• Managing the ESXi servers using the Vsphere client and Vcenter for managing the multiple ESXi servers.
• Building the Red hat Linux server in Vmware ESX client through Vsphere client.
• Storage mapping on Red hat linux and create the Volume group, Filesystems using Logical Volume manager.
• Installed/Configured RedHat Linux cluster 5x version & Configuring the cluster resources.
• Adding storage to the cluster disks and increasing/ decreasing the filesystem in RHEL.
• Creation of Fence devices in the cluster, Creation Failover domains for the cluster and Flip over/ Failover test in between the nodes in the cluster.
• Responsible for performance tuning of AIX and migration of AIX to higher OS levels 5.1/5.2/5. 3..
• Used Apache Marathon to launch and scale multiple instances of microservices in AWS cloud along with Apache Mesos for resource abstraction.
• Installed and Configured SAMBA Server in Linux for accessing the shared files from the windows environment.
• Worked on SAN storage on ESXI servers & assigning the LUNs to the Virtual Machines running on the ESXi server.
• Performed Sybase 11.5.1, Perl Scripting, NIS, NFS, LDAP server, Weblogic, Apache Tomcat, EMC Storage SAN.

Confidential, Mountain View, California

Linux/Unix, VMware Sys Admin

Responsibilities:

• Yum configuration & package installation through YUM.
• Configuring and deploying of iSCSI server and Client.
• Installation of Red Hat Enterprise Linux.
• Using Jumpstart/Flash/live upgrades for Solaris Installations, Kick start for Red Hat for automated installations and VMWARE.
• Experience in System monitoring, Performance tuning and OS hardening to secure the Solaris environment.
• Administered tasks like user and password management, allocating quotas to users as well as system startup and shutdown, monitoring and partitioning.
• Creation of Backup accounts for new users and Deletion of accounts for retired or unavailable users.
• Setup NIS including configuration and troubleshooting of master, slave servers and clients.
• Experience in configuration of NFS and Naming services like NIS and DNS.
• Implemented file sharing on the network by configuring NFS on the system to share essential resources.
• Involved in decommissioning servers project as per the company procedures and update the hardware inventory database.
• Installation, Upgradation and Management of packages through RPM and also take care of dependencies.
• Involved in installation, configuration and administration of RHEL on HP ProLiant, DELL IDRAC.
• Setup and configured network TCP/IP on AIX nodes including RPC connectivity for NFS. Created mount points for Server directories, and mounted these directories on the Servers.
• Configuration and troubleshooting for Red Hat Linux.
• Handling troubleshooting issues like boating, RPM packages, User management and backup.
• IP bonding for load balancing and fail over, Firewall, SELINUX.
• Hosting and securing web pages using Apache (httpd) web server and ssl.
• User Administration & Quota Management.
• Provided 24X7 support for large number Production, Development and Test systems.
• Installed Red Hat Enterprise Linux 5/6 Operating System on servers and Blades over the network.
• Built virtualized Hyper-V Linux servers on ESXi, VSphere and Blade servers to host multiple applications on same chassis across different server hosts.
• Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
• Creating and deploying LVM, resizing the logical volume and volume group.
• Configuration & administration of LDAP, NFS, FTP, SAMBA & POSTFIX Servers in Red Hat Enterprise Linux.
• Performances, CPU and Memory monitoring of Red Hat Enterprise Linux.
• Create, deploy and manage Linux and windows VM using Red Hat Enterprise Virtualization Manager, which includes moving & migrating VM from one cluster to another cluster or within the same cluster.
• Experience in Windows 2003 and2008 Active Directory Installation and Configuration.
• Heartbeat clustering for high availability in Apache.
• Installing, configuring, administering, troubleshooting VMware server on ESX platform and VMware client, workstation.
• Installing and configuring Apache and supporting them on Linux production servers.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IP tables, firewall, TCP wrappers. Set up Linux servers for LAMP implementations and readiness.
• Created File systems from local storage as well as NFS partitions for application portability.
• Created Ext4 file system in Red Hat Enterprise Linux.
• Monitored server and application performance & tuning via various stat commands (VMstat, nfsstat, iostat etc.) and tuned I/O, memory, etc.Major part of support is dedicated to Web Application Environment.
• Extensively worked on hard disk mirroring and stripe with parity using RAID controllers.
• Installed and configured ESXi 5.0, 5.1 Servers on Blade servers. Creating Virtual machines. Creation of templates from VMs and Creation of VMs from templates.
• Worked with Redhat Satellite Server for upgrading and patching Linux Servers
• Experience in Redhat Cluster Suite, Global Filesystem, and Redhat Network Satellite Server
• Troubleshooting and building high end servers and midrange servers
• Performed automated installations of Operating System using Jumpstart for Solaris, Kickstart for Linux and Ignite for HP-UX.
• Configure VCenter Server 5.0, 5.1 in production environment and created many cluster and enabling HA and DRS for Load balancing and High Availability. Worked on Migration concepts like VMotion, SVMotion and cold migration.
• Performed physical to virtual (P2V) and (V2V) migrations for approximately 50 physical servers utilizing VMware Converter.
• Firmware upgrade, managing the servers, collecting Logs, open KVM console for troubleshooting.

Confidential, Chicago, Illinois

Unix/Linux/Windows Sys Admin

Responsibilities:

• Installed, configured and maintained mission critical systems including DNS, DHCP, Sendmail.
• TCP/IP troubleshooting on Unix/Linux network
• Web server, email, and user account administration
• Performed networks/server’s vulnerability tests to protect against unauthorized access
• Installed and maintained Antivirus solutions to provide customers with comprehensive centralized Antivirus scanning for co-located servers.
• Experience in Server build using Jumpstart and HPSA Process on multiple servers.
• System builds from the scratch for UNIX and Linux system using manual and automated (Jumpstart, Kick start) installation.
• User administration through power broker and power password tools.
• Installation, configuration and administration of IBM Web Sphere Application server v6.0. And Web Logic Servers.
• Installation and configuration of Apache and Tomcat web servers.
• Installed AIX and performed the operating system upgrade flawlessly. Updating the existing applications and adding new ones without incident.
• Involved in Storage management, LVM, File system management, User account management, data backups and user’s logon support.
• Involved in testing of products and documentation of necessary changes required in this environment.
• Good working knowledge of installing, configuring, and upgrading Blade Center’s Management Module.
• Carried out a variety of backup solutions under various system constraints
• Monitored networks/servers for irregularities and addressed issues as needed
• Administer local and remote 100% Command Line Interface (CLI) Red Hat Enterprise Linux servers (Web servers, Monitor servers, Utility servers, Database servers & Map servers
• Utilize Kickstart and YUM to build and patch Linux servers.