SUMMARY:

• 7+ years’ experience with specialization in Linux/Unix/VMware administration and application support on Red hat Linux, SUSE Linux, Solaris, IBM - AIX and Windows environments.
• Administration, installation, configuration, troubleshooting and performance tuning of Linux distributions such as Red Hat Enterprise Linux, SUSE Linux Enterprises, Fedora and Windows Servers.
• Deployed Ansible, Puppet for configuration management to existing infrastructure and startup.
• Managed Amazon Web Services like EC2, S3 bucket, RDS, EBS, ELB, Auto-Scaling, AMI, IAM through AWS.
• Networking, kernel Parameter & Tuning, Trouble Shooting System & Performance Issues, Package Management (YUM/RPM), Patch Management and Development Operations.
• Experienced with Docker container service. Creating Docker files, Docker Images &Containers .
• Experience with ability to automate the manual task writing custom script using Perl, Python and shell scripting language.
• Experience in scripting to automate daily activities task like logs file, disk spaces, patching etc.
• Strong experience to configuration of LAMP, Apache, Tomcat and middleware application servers.
• Hand on experience on web development and deployments in varies fields.
• Experience in virtualization software such as VMware. Installed and monitored Virtual environments with ESX 3.x, ESXi4.x, 5.x, 6.x.
• Experience in Scheduling Full Backup of VERITAS Net backup in SAN and Incremental Backup daily, weekly and monthly.
• Experience in Installing, upgrading and configuring Servers using Jumpstart Servers, Flash Archives and Interactive Installation.
• Worked with Database administrators to tune kernel for Oracle installations.
• Experience with Veritas Volume Manager (VxVM), Veritas File System (VxFS), Veritas Net Backup, Veritas Clustering with SAN, NAS environment. Good Knowledge in Configuring and maintaining Network file system (NFS) and Samba.
• Experience in installing, configuring and administering NFS, FTP, DNS, DHCP, NIS, Mail Server and Samba Server in heterogeneous environment.
• Experience in installing, configuring and implementing the RAID technologies using various tools like VxVM and Solaris volume manager.
• Hands on experience in administration and maintenance of application services like HTTP and FTP Patching of servers using SATELLITE server. Resolving mount point full issues like /var, / and other application file systems.
• Experience in Creation and managing user accounts, security, rights, disk space and process monitoring in Solaris and Redhat Linux.
• Installation and upgradation of Packages and Patches configuration mgmt, version control, service pack. & reviewing connectivity issue regarding security problem.
• Hands on experience in building servers using Jumpstart and Kick-start Procedure Process.
• Installed patches using Scripts on Pre-Production and Production main servers.
• Installed packages, Critical server upgrade and SSL certificates on all web/app servers.
• Experience in build, performance, troubleshooting and Maintaining Linux and security Patching.
• Configured Volume groups, logical volumes and file systems on Linux
• Configuration and administration of Fiber Card Adapter’s and handling Linux part of SAN (SAN arrays HITACHI, EMC).
• Experience with enterprise class storage including SCSI, RAID and Fiber-Channel Technologies.
• Installation, Configuration and Administration of HP Data Protector &VERITAS Netback up, Space, Managing disk usage, File access problems, Remote file system.
• Experience in Monitoring system Access and Monitoring servers by using tools like Nagios, Solarwinds, Tivoli, and Concord.
• Experience in IBM Web Sphere Administration & setting up IBM Web Sphere Application Servers in the development, testing and production environments.
• Installation of patches and packages, Installation & configuration of Jumpstart/Flash archive, Ignite and kickstart servers.
• Installation, upgrading, migrating Packages and File Systems for Redhat-Linux, Solaris and AIX.
• Expertise in the area of virtualization with vSphere, VMware ESXi 6.x, 5.x, 4.x hosts and Virtual Center server till 5.5 and 6.x.
• Deployed key VMware ESX/ESXi technologies, expertise with HA/DRS, P2V. ESX migrations VSphere 4.x,5.x, 6.x
• Extensive understanding of networking concepts, (IE. Configuration of networks, TCP/IP, VPN, VLANs, and routing in LAN/WAN, Ethernet Port, Patch Panel)
• Sound knowledge on ESX Architecture, guest OS installation, setting up of VM priorities, Cloning and Snapshots.
• Strong understanding of VMware Networking concepts like creation of vSwitches, different types of Port groups, NIC Teaming and VLAN Problem management.
• Upgrading ESXi 4.x, 5.x, 6.x -using VMware Update Manager.
• Experienced in performing Cloning, Cold Migrations and Hot Migrations and taking Snapshots.
• Experienced in creating Virtual Machine Templates and deploy virtual machines from templates and allocate resources.
• Manage Virtual Machines using Virtual center and web access.
• Exposure on vMotion migration, High Availability feature, DRS feature and Setting VM priorities on CPU and Memory resources.
• Experience in Active Directory, GPOs, DNS, DHCP, File & Print Server, IIS (Web Server), FTP, Terminal Server, NAT, Microsoft Clustering and Exchange Mail Server in Windows based server environment.

TECHNICAL KNOWLEDGE:

Hardware: HP DL, Cisco UCS, EMC, Netapp, Hitachi arrays, Backup Devices, Ethernet Hubs, Routers

Web/Application Servers: WebSphere Application Server Netscape/iPlanet Server, MQSeries, WebLogic, JBoss, Server, IBM HTTP Server, HTML, DHTML, XML, Java Script, JSP, Servlets, EJB.

Networking: TCP/IP, NIS, NFS, DNS, DHCP, Cisco Routers/Switches, WAN, SMTP, LAN, FTP/TFTP

RDBMS: IBM UDB2, Oracle MS-SQL Server and MS-Access

Applications/Others: Nagios, Samba Tivoli (TSM), RHN Redhat Satellite, Veritas, NetBackup, Veritas Volume Manager, LVM.

WORK EXPERIENCE:

Confidential, Knoxville, Tennessee

Systems Administrator (Linux/Unix&VMware)

Responsibilities:

• Administration, Installation, Configuration, troubleshooting and Performance tuning of Linux distributions such as Red Hat Enterprise Linux, CentOS Linux Enterprises,Windows Servers.
• Installation, configuration and upgrades on Red Hat Linux 5.x and 6.x, 7.x.
• Worked with upgrading patches and development, pre-production and production environment systems as Linux distributor server.
• Experience in Python to automate daily activities task like logs file, disk spaces, patching etc.
• Configuration and deployment of Unix-based servers with open source and commercial software. Troubleshoot server bugs and inconsistencies. Skills used: Linux, shell scripting, Perl.
• Worked withDevops tools such as Ansible, Chef and Puppet, for configuration management.
• Used bash, awk, sed and Perl to automate most of the daily activities like logs monitoring, log rotation, disk spaces, purging and error detections.Migrated corporate Linux servers from physical servers to Amazon AWS virtual servers.
• Responsible for Administering Linux servers which includes install, upgrade, maintenance of repositories, performance tuning, troubleshooting issues and maintenance.
• Deployed Docker Engines in Virtualized Platforms for containerization of multiple applications.
• Implemented nightly builds on Jenkins and automated various scopes of testing on Jenkins.
• Developed CI/CD system with Jenkins on Docker for the runtime environment for the CI/CD system to build, test and deploy.
• User Administration by creating, maintaining User's accounts and groups, setting up User environments.
• Monitored ser server and application performance tuning via various commands (vmstat, top, iostat).
• Worked on Installation, configuring and administering Jenkins Continuous Integration tool on Linux machines along with adding/updating plugins such as SVN, GIT, Maven, and ANT.
• Worked with AWS Cloud platform and its features which includes EC2, VPC, EBS, AMI, SNS, RDS, EBS, Cloud Watch, Cloud Trail, Cloud Formation AWS Configuration.
• Configuring the Docker containers and creating Docker files for various applications.
• Automated the weekly deployments utilizing CI tool Jenkins.
• Applied the Clustering Topology that meets High Availability and Failover requirement for performance and functionality.
• Installation, Configuration and administration of DNS, LDAP, NFS, NIS, NIS+ and Sendmail on Redhat Linux/Debian Servers.
• Configured, managed ESX VM’s with virtual center and VI client.
• Managing LVM and File systems, SRC and Paging space management, restore and availability
• Installed Patches and Packages on Linux (Red Hat), Solaris servers and created file systems by using LVM.
• Involved in Upgrading VERITAS Volume Manager.
• Monitor Hardware console for any hardware issues using NAGIOS.
• Administrated JIRA, and Maintained documentation using Confluence.
• Worked with chef cookbooks to install the packages like Tomcat, Squid, Greasy spoon, Elasticsearch, Kibana, logstash, Kafka, Grafana, Influxdb Splunk.
• Installed patches using Scripts on Pre-Production and Production and virtual servers.
• Configured Kickstart Servers and booting the images using PXE in Red Hat Linux.
• Monitor Performance on Red Hat Enterprise Linux5/6/7 and SUSE Linux Enterprise Server 9/10.
• Responsible for Tracking Remedy tickets and meet the SLA's. Installed packages, patches and SSL certificates on all web servers.
• Installed and configured VERITAS NetBackup Client on Red Hat Enterprise Linux.
• Responsible for applying latest patches, user administration, kernel tuning parameters, file system space monitoring on Solaris systems.
• SWAP box configuration, Implementation of disaster backup and recovery.
• Administered and Troubleshoot Solaris servers running business critical application & WebLogic applications.
• Configured kickstart server and updating/applying patches to the servers using Red Hat Satellite server.
• Worked on automation scripts like backup jobs and performance monitoring
• Created scripts for upgrading, migrating servers, adding storage to servers.
• Extensively worked on hard disk mirroring and stripe with parity using RAID controllers.
• Involved in Server sizing and identifying, recommending optimal server hardware based on User requirements.
• Installation and configuration of Veritas Storage Foundation Suite: Veritas Volume Manager, Veritas File System, Veritas Cluster Server.
• Built virtualized Linux servers on ESXi, Vsphere and Blade servers to host multiple applications on same chassis across different server hosts. Handling OS/file-system/hardware/storage related issues.
• Implementing best practices to enhance server performance, monitoring. Working on ticketing tool Remedy and process based on ITIL.
• Set up Red Hat Linux servers for iSCSI LUN boot instead of using local hard disks.
• Installed and configured SAMBA server for windows and Linux connectivity.
• Installed, configured and deployed applications on WebLogic Application Server.
• Design and installation of Linux Cluster- local and metro clusters.
• Migrations, Installing Deployment patches, Updates on several thousands of Production Servers.
• Administered the UNIX System for clustered HP Servers with fiber attached SAN storage.
• Implementation and Troubleshooting of VMware ESXi 6.0, 6.5 Hosts, VMware vSphere virtual center. P2V and V2V conversions by using VMware Converter. Administration of VMware ESXi and ESXi Servers on HP Chassis 7000, DL’s, Cisco UCS.
• Hands on experience in updating / upgrading ESX servers, Virtual Center servers and windows virtual machines using VMware Update manager and manual upgrades.
• Managed VMware ESX (i) hosts using vSphere client and Web client. Performing VMotion and storage vMotions.
• Creating Clusters for High Availability and Dynamic Resource Scheduling. Played a vital role in Creating Virtual Machines, cloning virtual machines, converting P2V (used standard VMware converter tool), VM-Provisioning (Linked clones, thin disks, de-duplication) taking Snapshots of virtual servers, HA, DRS, VMotion.
• Experience on creating host profiles and deploy to hosts in a VMware clusters.
• Experience in installing and configuring Microsoft Windows 2008,2012 Servers from ILO management tool on Rack servers and blades.
• Experience with vSphere Host Profiles, Standard and Distributed Switches setup. LUN creation and storage mapping administration and configuring Multi pathing.

Confidential, San Diego, California

Sys Admin (Linux/ Unix &VMware)

Responsibilities:

• Installation, configuration and Operating System upgrade on, Red Hat Linux 5.x, 6.x
• Installing, upgrading and administering the Linux server. Installing and configuring the Linux desktops.
• Installation of various Solaris and Linux flavors on Intel and AMD architecture-based machines.
• Troubleshooting of Linux and UNIX based systems.
• User accounts administration. Setting up TCP/ IP and connection to the Internet.
• Well-versed in LINUX system installation and administration which includes backup, upgrades, monitoring system performance. Configuring, Samba Server and Squid.
• Administered Linux based systems. Administrated server consolidation program through use of VMware ESX server and VMware Virtual Center. Used and worked on Kick Start configuration to handle issuances and kernel configurations.
• SWAP box configuration, Implementation of disaster backup and recovery.
• Performance Management & Tuning of RHEL. Troubleshooting OS (RHEL/Solaris) related issues.
• Installation of different packages as required by clients. Implementing best practices to enhance server performance, monitoring.
• Volume management using Logical Volume Manager (LVM). Installation of applications requested by clients.
• Installed and configured SAMBA server for windows and Linux connectivity.
• Implemented NIS and NFS for administrative and project requirements.
• Worked with set up of AUTOFS, NTP Configuration and Administration. Handling NFS, Auto Mount, DNS, LDAP related issues.
• Created file systems using NFS and mounted it. Created devices and special files using mknod.
• Managed daily system administration cases using BMC Remedy Help Desk.
• Monitoring CPU, memory, physical disk, Hardware and Software RAID, multipath, file systems, network using the tools NAGIOS
• Migrated Unix applications to Linux platform (ETL Informatica, Oracle, DB2, AD/LDAP etc).
• Worked with several teams to handle Incidents related to OS, Applications and Hardware.
• Worked with different SLAs, OLAs and other ITIL best practices used to address the tickets in a timely manner.
• Installed and Configured Web and investigate the configuration changes in the production environment.
• Responsible for multicasting of various components as a system administrator.
• Worked closely with DBA 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.
• Set up Quotas for the user accounts & limiting the disk space usage.
• Configuring SUDO and granting root permission to users for performing certain activities.
• Configure Crontab entries and update automation scripts.
• Knowledge in Adobe, Hyperion, development servers.
• Upgrading RHEL using live upgrade and manual upgrade.
• Created BASH shell scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation.
• Work with security team to modifying application users’ password policies, group policy, UID and GID assignment policies.
• Monitored the performance of the system using top, sar, ps, prstat, vmstat, netstat, iostat, and cpu info 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.
• Experience managing various file systems using LVM and also configured filesystems through network using NFS, NAS, SAN methodologies and installed RAID devices.
• Installing ESX and ESXi servers on HP, DELL and IBM hardware.
• Installation of Vcenter server and its components. Monitoring of Vsphere licensing.
• Deployed Virtual machines, configured them with IP, installed VMware Tools and hardware.
• Creating resource pools and adding the VM’s into the pools.
• Creating different ports groups for different purposes.
• Taking care of NIC teaming at ESX server level for NLB and redundancy.
• Updating and upgrading ESX servers using Vcenter Update manager.
• Storage VMotions according to the requirement. Worked on Windows 2008, 2012 R2 servers.
• Experience with troubleshooting DNS, DHCP, IIS and Active directory.
• Responsible for Microsoft exchange server 2010, SQL and database server
• 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.

Confidential, Peoria, Illinois

Systems Administrator (Linux &VMware)

Responsibilities:

• Supported infrastructure environment comprising RHEL5.x, 6.x.
• Performed installations of OS on RHEL 6.x, VMware ESXi 5.x, 6. x and ProLiant Blade BL and DL series servers using Kickstart.
• Responsible for applying latest patches, user administration, kernel tuning parameters, file system space monitoring on Solaris systems.
• Deployed latest patches for, Linux and Application servers, performed Red Hat Linux Kernel Tuning.
• Performed Servers consolidation and virtualization using VMware virtual infrastructure, VMware ESX, Virtual Center, VM tools.
• Install and configure DHCP, DNS, web (Apache, IIS), mail (SMTP, IMAP, POP3), and file servers on AIX and Red Hat Enterprise Linux servers.
• Performed day-to- day administration tasks like User Management, Space Monitoring, Performance Monitoring and Tuning, alert log monitoring and backup monitoring.Experienced in dealing with LVM.
• Installed and Configured RedHat Linux Kickstart and booting from SAN and managing multipathing at boot level and OS level.
• Patch Management, Package Installation/Upgrades and Kernel upgrades. System performance for hourly basis or daily basis.
• Remotely coping files using sftp, ftp, scp, winscp, and filezilla.
• Created user roles and groups for securing the resources using local operating System authentication.
• Experienced in tasks like managing User Accounts and Groups, managing Disks and File systems NFS, SVM.
• Configuring & monitoring DHCP server. Maintained LVM, VxVM Taking backup using tar and recovering during the data loss. Experience in writing bash scripts for job automation.
• Installing and setting up Oracle9i on Red Hat Linux for the development team.
• Provided production support of Apache and JBoss including installation, configuration, and management and troubleshooting.
• Implemented virtualization using VMware in Red Hat Linux on HP-DL and Cisco UCS.
• Implemented day-to-day tasks in RHEL that include upgrading rpms, kernel, HBA driver, configuring SAN Disks, multi pathing and LVM file system. Configured GFS file systems.
• Linux kernel, memory upgrades and swaps area and performed Red Hat Linux Kick start installations
• Created users, manage user permissions, maintain User & File System quota on Red Hat Enterprise Linux and AIX.
• Applied Operating System updates, patches and configuration changes.
• Troubleshoot Server Cable Patching, Cluster Cable Heartbeat and Network Cables for HP, Cisco UCS Servers.
• Configured SDS Mirroring on System Disks and Configured IPMP on Network Interfaces.
• Up gradation of Operating System Environment/ kernel patches, packages, web server, and applications.
• Performing a routine backup and restore using VERITAS Backup-Exec manager/ manual of all enterprise servers.
• Created Veritas volumes for databases and extended on the fly.
• Configured and administered TCP/IP, NFS, NTP, NIS, NIS+ and AutoFS
• Jumpstarted new Solaris clients in production environment.
• Managed user accounts and administered file and print sharing configuration
• Configured and supported SVM root mirroring on UNIX servers.
• Performing Data Migration from AIX Linux to Red Hat Linux.
• Installing and configuration of IIS, Apache, and Samba.
• Installing, configuring and updating LDAP, DNS, DHCP, NFS, NIS and NIS+ on red Hat Linux & IBM AIX servers.
• Configuration of network using Squid to increase network performance.
• Review server loads and recommend load balancing for optimization.
• Configuring IP connectivity, routing, checkpoint firewall and network interfaces. Also maintaining network connectivity of servers.
• Configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager (LVM) commands.
• Maintained availability, increased capacity & performance of production machines by upgrading their hardware (disks, CPU, memory, IO board, power cooling unit, mother board etc) & firmware.
• Worked on Central Management Server (VCenter Server) to manage all the ESXI hosts in the datacenter.
• Creating and managing Virtual Machines and Templates. Working with snapshots of Virtual Machines.
• Configured VMware on clustered environment, Implemented Migration of Virtual Machines using VMotion, Storage VMotion.
• Hot and Cold Cloning of Virtual Machines using VMware Converter.
• Configured VMware HA, VMware DRS and Fault Tolerance in acquiring higher efficiency for VMware Virtual Infrastructure.
• Worked on VMware Update Manager for updating or patching for all the ESX hosts and Virtual machines.
• Performed datastore migration using VMware storage vMotion.
• Experience on Host Profiles, Distributed Switch, DRS, VMotion, SV-Motion, Resource pools, permissions,
• Patches, Snapshots, Tools Upgrade, disk expansions, Templates.
• Building VM's and new Templates for new Projects and allocating them to appropriate Resource pools.

Confidential, St. Louis, Missouri

System Administrator (Linux, Unix, Windows)

Responsibilities:

• Installation and configuring of Linux, Windows Servers
• Involved in Building and configuring Jumpstart server and Red Hat Linux Servers using Kick Start server as required for the project. Maintained maximum uptime and maximum performance capacity for Enterprise Production, QA, and UAT/Staging. Incident management for Unix Servers (Solaris, Linux).
• Primary responsibility includes building and supporting Solaris/ Redhat Linux 4.x, 5.x servers.
• Monitoring CPU, memory, iSCSI disks, disk controllers, physical disk, HW and SW RAID, multipath, file systems, network using the tools NAGIOS and BMC Tools.
• Performed regular installation of patches using RPM and YUM.
• Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
• Extensive experience in installing, integrating, tuning and troubleshooting Apache, Tomcat, WebSphere and Weblogic application server. Implemented SUDO, SSH and other security tools and implemented SOX (Sarbanes Oxley) security compliance.
• Performed patch and package management. Managed user and group accounts.
• Added new disks and created new file systems. Configured and supported NFS clients.
• Installation and configuration Veritas NetBackup and performing Backup using Veritas Net Backup.
• Extensive use of Korn shell, Bash for scripting.
• Experience supporting MS Windows network infrastructure; including any of the following: Active Directory, WINS, DNS, DHCP, Group Policy, Exchange.
• Good experience in installation/upgradation of VMware ESXi 4.x, 5.x
• Reviewed supporting our MS Windows infrastructure and virtualization technologies. automate routine tasks via scripting. Ability to author scripts.
• Worked with other IT teams, customers (users), and other managers in helping build and implement systems and standards.
• Involved in migration of projects from one flavor to another one.
• Involved in development, user acceptance, and performance testing, production & disaster recovery server.