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System Administrator Resume

Austin, TexaS

SUMMARY:

  • 7 years of experience of UNIX/Red Hat Linux) and 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.
  • Change/Configuration and Release Management. Actively hosted and participated in Change Control, Agile, Production readiness and application release meetings throughout the Application Lifecycle Management (ALM) process.
  • Expertise in amazon AWS cloud which includes services like: EC2, S3, VPC, ELB, IAM, Cloud Front, Cloud Watch, Security Groups.
  • Experience in branching, tagging and maintaining the version across the environments working on Software Configuration Management (SCM) tools like Subversion (SVN) and GIT.
  • Experience in cloud stack such as AWS (cloud formation) and VMware stack.
  • Ability to build deployment, build scripts and automated solutions using scripting languages such as Shell scripting, Python, Ruby, PHP, PERL.
  • Extensively worked on Jenkins by installing, configuring and maintaining for continuous integration (CI) and for End to End automation for all build and deployments.
  • Extensive experience with software Build automation and standardization tools like ANT, Maven.
  • Understanding of networking concepts, configuration of networks, Router Configuration and wireless security, TCP/IP, VPN, Content Filtering, VLANs, and routing in LAN/WAN, Ethernet Port and Wireless Networks.
  • Configuring HP virtual connect, Server profiles and performing maintenance version upgrades.
  • Good at Configuring RAID Groups, Hot spare drives, & Global Hot spares.
  • Expert knowledge on configuring hardware iSCSi SAN, FC SAN, NFS and NAS storage to VMware ESXi hosts from vSphere client.
  • Expertise in converting P2V and V2V migrations using VMware Converter and PlateSpin in a large environment.
  • Experience with HP servers, CISCO UCS servers and Dell PowerEdge Servers and Strong Implementation knowledge on configuring and managing HP c7000, Cisco UCS 5108 chassis.
  • Experience in all forms of backup and recovery modules in windows server and VMware environments
  • 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.
  • 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 and managed Middleware tools through Puppet such as WebSphere Application Server 7.x/8.x, JBOSS GA7/EAP6, IBM IHS, Apache & Tomcat.
  • Worked with standards, policies and procedures for all aspects of UNIX server environment (e.g., configuration, administration, documentation, etc.). Experience in Server build using Jumpstart, flash archive, NIM, Ignite and kickstart.
  • Proficient DB administration (Oracle, DB2, Sybase and SQL) knowledge for maintaining, pruning, and performing required DB tasks.
  • Experience in working on source controller tools like Subversion (SVN), GIT, GITHUB, CVS, IBM Clear case and Perforce.
  • Experience in working on source control tools like Day to day job included but not limited to handling Tickets, Monitoring, Troubleshooting and maintenance.
  • 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.
  • Experience NIC Bonding/NIC Teaming configuration in Linux/UNIX/Windows/VMware systems to increase the bandwidth or redundancy based on requirement by the application.
  • Experience in installing, configuring, supporting and troubleshooting Unix/Linux Networking services and protocols like NIS, NIS+, OSPF, LDAP, DNS, NFS, DHCP, NAS, FTP, SSH and SAMBA.
  • Extensively involved in configuring & administering Net Backup clients, SAN Devices, EMC Storage.
  • Experience in updating O/S maintenance and modification levels by applying software patches and fixes (APAR’s and PTF’s) that are downloaded from IBM. Experience in Incident & defect Analysis, Penetration testing, vulnerabilities analysis, Fail Over analysis, Risk management.
  • Proficient in System Backup and Recovery from tapes using ufsdump, ufsrestore, tar and cpio.
  • Well versed in configuring Volume Groups and Logical Volumes, extended logical volumes for the system growth needs using Logical Volume Manager (LVM). Managing 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 Backupand 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 & 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.

TECHNICAL SKILLS:

Operating Systems: Unix, Linux (Red Hat, Ubuntu), Solaris.

Scripting: Shell, Perl, Ruby, Bash, PHP, Python.

Tools: Docker, Puppet, Chef, Salt, Jenkins, Ant, Maven, Cruise Control, SVN, CVS, Git, Nagios, Splunk.

Cloud: AWS EC2, VPC, ELB, IAM, SNS, RDS, EBS, Cloud watch, Cloud Front.

Database Web/App Server: MySQL, Oracle 10g/11g, DB2, RAC, Apache Tomcat5.x/7.x

PROFESSIONAL EXPERIENCE:

Confidential,Cincinnati, Ohio

System Admin

Responsibilities:
  • Installed & Up-graded Linux operating systems on physical and virtual machines.
  • Configured and installed RHEL 5.X & 6.X & 7 on VMware and Physical Machines Administration of Cloud-Servers Section.
  • Monitoring of server health through DynaTrace, installation of agent on servers and service monitoring; generation of reports related to server health (CPU, Memory, SWAP, FS) for solving problems and decision making
  • Amazon Web Services (AWS), EC2 Storage Managements integration and utilization within this infrastructure and applications.
  • Infrastructure deployment, administration, troubleshooting and configuration virtual and cloud instances on AWS and VMware platforms.
  • Managed Chef Cookbooks to automate system operations.
  • Configured Hardware in all range of Machines from workstations to Enterprise servers.
  • Performing updates and upgrades on the systems currently on the network for performance and auditing purposes.
  • Using Jenkins AWS Code Deploy plugin to deploy to AWS.
  • Writing Chef recipes to automate standing up new virtual instances.
  • Involved in designing and writing functionalities of the web applications using Ruby on Rails.
  • Responsible for the EBFs (Emergency Bug Fixes) to push them to different environments and monitor their status.
  • Migrated corporate Linux servers from physical servers to Amazon AWS virtual servers.
  • Installation and configuration of Apache web server.
  • Setup automated DNS names and alias for AWS hostnames.
  • Utilized and configured Kernel Based Virtual Machines on Red hat Enterprise Servers.
  • Generate self-signed SSL certificates and configure secure domains.
  • Manage Linux VMs (Red Hat, CentOS, Fedora & Ubuntu) running in ESX 6.0/5.0.
  • Experience with Jumpstart & Kickstart with PXE Installations on Solaris & Linux.
  • Supported applications Extraview & Confluence running on Solaris / Linux Server as load balancer.
  • Installing and upgrading software packages using rpm and yum utilities on Linux servers. Also Used Spacewalk and Forman for package management and Configurations. Worked on creating & maintain new NFS/CIFS shares and iSCSI LUNS.
  • Install and configured Apache & Tomcat running on Linux webservers.
  • Updated Infrastructure firmware on Cisco UCS Manager & also B-Series blade servers using service profile templates.
  • Experienced with creating self-signed SSL Certificates for webservers running internally and also installed on the server to enable HTTPS.
  • User and group management and administrating many applications like JIRA, SPLUNK, ZABBIX, NAGIOS, SVN, BAMBOO and other tools.
  • Configuring DNS, FTP, NFS, DHCP on RHEL 5, 6 & 7 machines.
  • Converted Linux systems from local password authentication to Active Directory/LDAP.
  • Maintained existing programs/scripts and extended Linux system functionality as needed.
  • Packaged Rue code in RPM format and developed automation scripting in Bash and Perl.
  • Designed and implemented Chef to configure, install, manage, and deploy releases across all environments.
  • Created training materials and provided training to meet team needs.
  • Debug application, site performance issues. Perform root cause analysis of the issues and report.
  • Replicate data across multiple servers. Prepare and execute backup and recovery for the data. Implement disaster recovery plans.
  • Linux / UNIX administration and Enterprise Server Integration.
  • Migration of servers for DC consolidation and tech-refreshes.
  • Server Configuration and updating the application/Softwares as required.
  • Configures CPU, Memory, and Disk partitions as required.
  • Configuring Volume Groups and Logical Volumes, extended logical volumes for the system growth needs using Logical Volume Manager (LVM). Performing ongoing performance tuning, hardware upgrades, and resource optimization as required.
  • Created disk groups, volumes, volume groups and RAIDs using LVM in RHEL & VERITAS Volume Manager.
  • Configured & Implemented DNS, DHCP, NFS, SAMBA to support cross platform file sharing.
  • Installed and configured VMware ESX server instances for virtual server setup and deployment.
  • Back-up management with help of Commvault, installation of agent on servers, defining back-up policy, and service monitoring; restoration of files in case of exigencies.
  • Patch and Package administration for installation of patches as per company policy and installation of packaged application
  • Worked on installation and configuration of Oracle RAC database.
  • Perform regular DBA activities including space management and performance monitoring.
  • Documented and implemented a disaster recovery plan that included backup schedule policies, regular testing, and off-site recovery plans to ensure data integrity and assurance. Jumpstart (JET) and kickstart for server builds
  • Maintain and troubleshoot advanced infrastructure monitoring facilities including SCOM
  • Integrate application and infrastructure monitors for new and existing implementations
  • Build and configure a virtual data center in the Amazon Web Services cloud to support
  • WMS Regression test scripts automation development and deployment using Selenium, Maven build, Jenkins CDCI and GIT repository
  • Deployed and managed SUSE Linux based servers and workstations, for production and lab usage.
  • Maintained the Unix-based server infrastructure Kernel/firm ware, OS patches and maintenance level releases.
  • Installation and configuration Veritas NetBackup Linux Severs and performing backup.
  • Created VMware Virtual machines using vSphere and installed Red Hat Linux 5x/6 on the VMs and standalone Dell servers.
  • Installed/configured EMC Storage with 0, 1 and 5, 10 RAID configurations
  • Migrated VMWARE VMs to AWS and Managed Services like EC2, S3 Bucket, Route53, ELB, EBS Etc… with Opscode Chef Cookbooks/Recipes.
  • Installed Chef-Server Enterprise On-Premise/WorkStation/ Bootstrapped the Nodes using Knife.
  • Designed and implemented Chef, including the internal best practices, cookbooks, automated cookbook CI and CD system. Made use of Jenkins for Chef CI, Thor for versioning, Berkshelf for dependency management, and Test-Kitchen for testing and development.
  • Wrote Ruby Scripts to Monitor Variety of Services & Shell Scripts with Hash/Arrays to Insert/Delete/Modify content in multiple servers
  • Leveraged Docker Engine to run Multiple Tomcat Instances as Containerized AppServers.
  • Installed, Deployed Red Hat Enterprise Linux 6.x/7.x, CentOS and installation of packages and patches for Red Hat Linux Servers.
  • Wrote Ansible Playbooks with Ruby SSH as the Wrapper to Manage Configurations of Openstack Nodes and Test Playbooks on AWS instances using Shell Scripts.
  • Administered and Engineered Jenkins for managing weekly Build, Test and Deploy chain as a CI/CD process, SVN/GIT with Devel/Test/Prod Branching Model for weekly releases.
  • Working with the hardware vendors and application team for the faulty replacement and planning the downtimes.

Confidential,Estero, Florida

Unix/Linux, VMware Sys Admin

Responsibilities:
  • Involved in configuration and support of a production environment hosted in a 24x7 setup.
  • Handle day-to-day problems and service requests related to OS, Server and Virtualization infrastructure on AIX and Linux platforms.
  • Configure new storage devices on Linux / AIX hosts.
  • Installed Chef Server Enterprise on workstation and bootstrapped the nodes using Knife.
  • Creating Amazon EC2 instances using command line calls and troubleshoot the most common problems with instances and monitor the health of Amazon EC2 instances and other AWS services.
  • Installed Veritas Volume Manager, VCS Cluster Server for fail-over and for mirroring and RAID level configurations on EMC storage frames
  • Set up Master puppet on primary server and used puppet agent for deployment, path verification, files permission, and automated restarts.
  • Gained Expertise in maintaining all the revisions of configuration and standard protocols under Subversion (SVN)
  • Managing Amazon Web Services (AWS) infrastructure with automation and configuration management tools such as Ansible, Puppet, or custom-built. Worked with cloud-hosted solutions, specific AWS product suite experience.
  • Networking trouble shooting using 'netstat', 'ifconfig' and 'tcpdump' etc
  • Configuring NFS, NIS, NIS+, DNS and LDAP.
  • Worked on Data Center Migration Project. Migrated Linux/Unix Servers from one data center to other data center with minimal downtime
  • Excellent in configuring and administering NFS, SMTP, DHCP, and Samba in heterogeneous environment
  • Performed automated installations of Operating System using Kickstart and Jumpstart for Linux and Solaris
  • Configured and used yum repository for packages and patches installation in Linux environment
  • Worked on Installation and configuration of VMWare ESX servers.
  • Configured Postfix relay server, sftp, NFS and DNS.
  • Involved in postproduction support for solving complex TICKETS.
  • Supporting various applications on UNIX environment.
  • Backing up and restoring files across the network, Performed OS upgrades and Patch loading as and when required.
  • Created Filesystems and Managed LVM as per the application needs either extending or reducing the size of LVM.
  • Installation and configuration of Logical Volume Manager, Veritas Volume Manager, Veritas File System, and Veritas Cluster Server
  • Worked with Linux performance tuning to add tuning parameters to the kernel and optimize the kernel.
  • Setup monitoring and alerting mechanisms for AWS and private datacenter infrastructure.
  • Performed installation, configuration and tuning of Redhat, CentOS, Solaris servers and AIX.
  • Involved in corporate level auditing compliances like system security, network security and installation of recommended patches.
  • Performing Manual backup and resume of the servers or data using Netbackup and TSM.
  • Involved in the development environment includes Windows Server 2012 R2, Power Shell 4.0, as well as web interfaces for Atlassian Stash, Crowd and Confluence. Public services included GitHub, CentOS, Ubuntu, and Chef.
  • Installed and configured Jenkins for Automating Deployments and providing automation solution.
  • Integrated GIT into Jenkins to automate the code checkout the process.
  • Experienced with Windows, Linux/UNIX environments. Working on monitoring tools like Nagios and Zabbix.
  • Setup Jenkin server and build jobs to provide to continuous automated builds based on polling the Git source control system during the day and periodic scheduled builds overnight to support development needs using Jenkins Git, Junit, Maven and Ant.
  • Hands on experience in uDeploy and middleware.
  • Performing Snapshots, Cloning, Cold Migrations and Hot Migrations on VMWare.
  • Moving VM's from one data store to another data store using Storage VMotion.
  • Physical to Virtual (P2V) / Virtual to Virtual (V2V) migration using VMware Converter.
  • Assisted in Disaster Recovery planning, testing and audit processes
  • Creating SNAPSHOTs and restoring them based on Application Team requirements.
  • Provide architectural consultation to solution and application architects utilizing best practices, design patterns and standards for designing Build. Configured storage devices along with iSCSI disks in SAN using RAID 1, 5 and 10.
  • Built ESX servers and implemented complete integration with SAN for VMotion in a VMware DRS and HA enabled environment.
  • Performed backup and restore operations of VMware host servers’ configuration, Virtual Machines backup, snapshots, P2V-V2V conversion using VMware stand-alone convertor, applying Patch updates, monitoring/reporting, SSH, SNMP and alerts notification. Configured and used EMC Recover Point for replication. Efficient experience in using NEXUS and Artifactory repository managers for Maven and Ant builds.
  • Experience is using Tomcat and Apache web servers for deployments and for hosting tools.
  • Hot and Cold Cloning of Virtual Machines using VMware Converter and restored VM’s using Veeam Backup.
  • Installing ESX and ESXi servers on HP, DELL and IBM hardware.
  • Configuring and Managing VMware cluster with High Availability (HA) and Distributed Resource Scheduling (DRS)

Confidential, Mooresville, North Carolina

Linux and VMware Administrator

Responsibilities:
  • Installation of Linux servers, upgraded to service pack updates, installed patches, configuring and creation new domain, start and stop web servers. Perform Server Operating System Installations, Upgrades and Configurations.
  • Network Configuration and Administration. Configure/Managing NFS, NIS
  • Responsible for applying patches and upgrades of sun & hp servers.
  • Installing, Configuring oracle databases on various UNIX platforms.
  • Production support of Apache, Apache HTTPD, Tomcat including installation, configuration, management and troubleshooting.
  • Configure and maintain Windows Server that runs DNS, DHCP and active directory services.
  • Formatted raw disks & partitioned them using the fdisk utility. Created file system using newfsand mounted it.
  • Utilized Linux Terminal Server for removing fat client management, save on administration Provide users with a more reliable & secure environment. Implementation of numerous VMware ESX virtual machines.
  • Created high availability iSCSI SAN optimized for VMware server virtualization environments.
  • Installation and configuration of MySQL on Red Hat Linux cluster nodes.
  • Worked in configuring and setup connectivity between web servers, database servers and directory servers as a process server administrator. Successfully migrated Red hat Linux infrastructure to VMware servers.
  • Providing RIM (Remote Infrastructure management) Support.
  • Working on Incidents, Change requests on Remedy Tool.
  • Installing patches, packages and third-party software on Linux Servers.
  • Worked with KORN, BASH, PERL, Python shell scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation. Experience in backup reporting and managing of EMC Legato Network Environments
  • Configured VMware HA, VMware DRS in acquiring higher efficiency for VMware Infrastructure.
  • Implemented and managed HA and DRS clusters and Worked on VMware FT for critical VM’s.
  • Responsible for implementation and administration of VMware Horizon View - VDI solute
  • Experienced of making use of VMware Consolidated backup and data recovery appliances in backing up and restoring VM's.
  • Installation and maintenance of all systems within a client’s digital environment. Design, Build, configure and manage New and existing environments on VMware 5.x and Performed Infrastructure Maintenance, upgrades and enhancements.
  • Worked on Datacenter Consolidation, Migration, Business Continuity, Backup and VMware administration.
  • Configured VMware HA, VMware DRS in acquiring higher efficiency for VMware Infrastructure.
  • Implemented and managed HA and DRS clusters and Worked on VMware FT for critical VM’s.
  • Responsible for implementation and administration of VMware Horizon View - VDI solution
  • Experienced of making use of VMware Consolidated backup and data recovery appliances in backing up and restoring VM's.
  • Configured VMotion for migrating VMs, HA for cluster atmosphere and DRS for load balancing company between multiple ESX hosts.
  • Experience in Implementation of the Cisco UCS Blade Servers in datacenter & Created Service

Confidential,Austin, Texas

System Administrator

Responsibilities:
  • Installation of RHEL 5.0/6.0, Ubuntu and Solaris 10 using kickstart/jumpstart and custom building the servers.
  • Linux / UNIX administration and Enterprise Server Integration.
  • Migration of servers for DC consolidation and tech-refreshes.
  • Providing 24/7 support for on-call on Red Hat Linux, Ubuntu, Solaris and AIX environments.
  • Worked on installation and configuration of Oracle RAC database.
  • Perform regular DBA activities including space management and performance monitoring.
  • Jumpstart (JET) and kickstart for server builds. Monitored server health through SCOM.
  • Integrate application and infrastructure monitors for new and existing implementations
  • Creating and managing of filesystem with SVM, Veritas Volume Manager, Veritas File systems, LVM, ZFS in the production, test and Development environments.
  • Worked on installing and configuring Sun Solaris using jumpstart, Ubuntu, Red Hat Enterprise Linux using Kickstart.
  • Tuning the kernel parameters based on the Oracle RAC database requirement.
  • Key member in server migration, data-center consolidation and data-center migration project
  • Deployed and managed SUSE Linux based servers and workstations, for production and lab usage.
  • Maintained the Unix-based server infrastructure Kernel/firm ware, OS patches and maintenance level releases.
  • Built and supported Solaris Zones and Containers on Solaris 10, 11 platforms. Created LDOMs on Solaris 10, 11
  • Migrated, patched, and did resource utilization of Solaris virtual servers (ldoms, zones, containers)
  • Created Solaris virtual servers - zones, LDOMs (OVMs) and did p2v and v2v migrations.
  • Scripting on shell and Perl languages
  • Installing RedHat Linux using kickstart and applying security polices for hardening the server based on the company policies.
  • Managed DNS, FTP, apache servers in Linux. Worked on maintenance of ESX host clusters and security .
  • Performing Snapshots, Cloning, Cold Migrations and Hot Migrations.
  • Moving VM's from one data store to another data store using Storage VMotion.
  • Physical to Virtual (P2V) / Virtual to Virtual (V2V) migration using VMware Converter.
  • Managed and configured VMware virtual machine for RHEL, Oracle /Sun Solaris, Oracle Linux server
  • Installed, configured and maintained DNS, FTP, TCP/IP and Samba on Red Hat Linux.
  • Installed, configured and maintained web servers like HTTP Web Server, Apache Web Server, WebSphere Application Server and Samba Server on Red Hat Linux.
  • Build, Install, configure and manage VMware Virtualization based on vSphere (4.0/4.1/5.0/5.1) for Datacenter customers.
  • Creating Data centers in the vSphere Web client and adding the Hosts to the Data center.
  • Created standard Templates and deployed servers from the Templates.

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