SUMMARY:

• Around 5 years of result oriented specialized experience as a Red Hat Enterprise Linux/Unix Admin and Windows.
• Involved in installation, configuration, upgrading, patching and administration of Linux and windows Servers.
• Experienced in creating and managing User Accounts, Security Rights, Disk Space, Quotas and Process Monitoring in Red Hat Enterprise Linux.
• Participated in configuring and monitoring distributed and multiple platform servers using Puppet. Used Puppet server and workstation to manage and configure nodes.
• Created Custom Puppet modules for bootstrapping new servers with a required application on dependencies and packages.
• Created and built a pipeline for application versions, using Jenkins Continuous Integration.
• Experienced in Logical Volume Management on Linux with LVM Knowledgeable in HTTP, HTTPS, FTP, SFTP, DHCP, DNS, SNMP TCP/IP, UDP, ICMP, VPN, POP3 protocols.
• Experienced in setting up SSH, SCP, SFTP connectivity between UNIX hosts.
• Knowledge in NIS, NFS, DNS, FTP, Samba Server, LDAP, remote access, and system troubleshooting operations.
• Experienced in Setting up Chef Workstation, boot strapping various enterprise nodes, setting up keys.
• Experienced in setting up puppet master, Google cloud and puppet agents for managing enterprise policies, configurations.
• Performance Monitoring, resolving network issues & Tuning the system using tools such as - top, iostat, vmstat, netstat, nfsstat, sar, ndd, ethtool, Dtrace, Strace.
• Managed Active Directory and Group Policy objects for three service locations with 600 total users mixed Windows and Mac clients.
• Experienced in writing Scripts in Bash for performing automation of various tasks.
• Content Management Systems Knowledge with e-commerce integration into CMS Experience with Linux/Apache/MySQL (Database Management).
• Experienced in writing UNIX Shell Scripts using commands like awk, sed, tcsh, bash, Ksh and Perl to automate system admin jobs.
• Created and built a pipeline for application versions, using Jenkins Continuous Integration.
• Automated application deployment in the cloud using Docker technology and using Elastic Container Service scheduler.
• Gained Extensive knowledge on writing and deploying modules in Puppet.
• Configured Nagios to monitor EC2 Linux instances with puppet automation.
• Configured Elastic Load Balancers with EC2 Auto-scaling groups.
• Involved in setting up JIRA as defect tracking system and configured various workflows, customizations and plugins for the JIRA bug/issue tracker.
• Experienced in LDOM's server virtualization withSolariszones and ZFS file systems.
• Configuring High Availability (HA) and Distributed Resource Scheduler (DRS) Creation of template.
• Setup and configured network TCP/IP onAIXincluding RPC connectivity for NFS.
• Knowledge in working with SAN, and NAS, storage systems, Cisco SAN gear and SAN volume controller.
• Maintained high availability clusters and standalone server environments and refined automation components with scripting and configuration management (Ansible).
• Build servers by using AWS, importing volumes, launching EC2, RDS, creating security groups, auto-scaling, load balancers (ELBs) in the defined virtual private connection.
• Deployment and management through AWS cloud formation on EC2 instances and maintaining Amazon S3 storage.
• Knowledge inHP-UXsystem implementation and administration, including hardware setup, OS install and Filesystem management.
• Responsible for automating build and monitoring tasks across AWS and Rackspace using a variety of tools such as Mongo DB, Jenkins, and JIRA.
• Administered moves, adds, and changes for Cisco Unified Communications Manager and Cisco Unity Connection.

TECHNICAL SKILLS:

Operating systems: Agile Methodologies (SCRUM), Waterfall Model Linux (RHEL, Ubuntu), Windows servers 2008/12

Scripting languages: Shell, Ruby, Python.

Cloud/Virtualization: Amazon Web Services, Microsoft Azure, VMWare.

Web Servers: Apache Tomcat, JBoss, Web Logic, WebSphere.

Networking Services: NIS, NFS, AutoFS, DNS, SSH and Send mail.

Ticketing Tools: HP Service Manager, JIRA, Remedy, Service Centre.

PROFESSIONAL EXPERIENCE:

Confidential, Dallas, TX

Linux Unix Administrator

Responsibilities:

• Installing, tuning, troubleshooting and patching of Red Hat Enterprise Linux servers.
• Installation, configuration, and maintenance of web servers, application servers, and database servers on Linux Servers.
• Providing support for deployments and issues with the tools (Jira, Confluence)
• Scheduled various regular, periodic, future and queue tasks by using crontab.
• Build and Customized Amazon Machine Images (AMIs) & deployed these customized images based on requirements.
• Created Snapshots and Amazon Machine Images (AMIs) of the instances for backup and creating clone instances.
• WroteAnsibleplaybooks to automate server provisioning, configuration management, and application deployment.
• Experience in setting up the chef repo, chef work stations, chef nodes and salt stack.
• Created Puppet automation tools and builds while also providing overall process improvement to any manual processes.
• Developed automation scripting in Python (core) usingAnsibleto deploy and manage Java.
• Created and updatedAnsibleplaybooks and files, and packages stored in the GIT repository.
• Connected continuous integration system with GIT version control repository and continually build as the check-in's come from the developer.
• Involved in Bashshell scriptingfor doing manipulations of the flat files, given by the clients.
• Installation, configuration of Veritas Volume Manager and file systems.
• Deployment of VMware VMotion,VCenterConverter to migrate virtual workloads.
• Worked on Virtualization Products VMware ESX Server/ Virtualization Client 2.5.
• Installation and configuration of Windows including Active Directory Services, IIS, DHCP on several Dell and HP servers.
• Maintained and troubleshooted an FTP server, samba server of the client managing red hat cluster, HPC environment.
• Installation, configuration and support of DHCP, SSH, SCP, FTP services.
• Installing Blade Logic agent and registering servers to Blade Logic server and run the Blade Logic jobs for patching, compliance, audit and remediation.
• Kernel OS patching, installation and troubleshooting third party tools like Net backup client, EMC power path, Scom tool, NetIQ software.
• Implemented naming services like DNS, NIS, and Active Directory in multi OS environments.
• Install new UNIX (Redhat Linux, AIX,HP-UX) Systems using Kickstart Server/ NIM/ Ignite-UXserver.
• Packaged applications forSCCMdistribution to clients / servers including Citrix servers.
• Provide reporting fromSCCMfor inventory, software metering, and update compliance.
• Configured Nagios to monitor EC2 Linux instances with puppet automation.
• Configured Apache web server in the Linux AWS Cloud environment using Puppet automation.
• Configured and monitored distributed and multi-platform servers using Nagios.
• Automated Build and deployment to Wildly server using Jenkins andRun deck.
• Utilized Amazon Web Service (AWS) including EC2 to maintain, configure, and install/scale servers and systems in the Amazon Cloud - Data Pipe Managed AWS.
• Experience in Installing, configuring and administering Jenkins CI tool on Linux machines.
• Used Jenkins for Continuous Integration and deployment into different Web/Application Servers.
• Defined branching, labeling, and merge strategies for all applications in GIT.
• Installed and configured application like NFS underVCScontrol forHAcapability.
• Expanded file system using Logical Volume Manager.
• FileSystemManagement on SunSolaris& Linux environments.
• EMC disk configuration for Web, Application and Database servers.
• Performance Tuning and Troubleshooting Web/Applicon/Database Servers.
• Planned, scheduled and Implemented OS patches on bothSolaris& Linux boxes as a part of proactive maintenance.
• Automated server backups on a monthly, weekly and daily basis using Shell Scripts.
• Monitored daily backups and maintained offsite backup for recovery in case of a system crash.

Confidential

Linux System Administrator

Responsibilities:

• Installation and configuration of Operating System such as Sun Solaris, Linux, AIX.
• Viewing and controlling the Processes running on the system and automating repetitive tasks.
• Installation and configuration of VMwareVCenterConfiguration Manager.
• System efficiency and Performance monitoring, Disk and Network usage.
• Experience in Issue Tracking tools JIRA, Remedy, Service Now and HP Quality Center
• Configured servers and infrastructure are running RedHat and JBoss, using PUPPET to configure, install, manage, and bring up JBoss and applications.
• Developed and Configured numerousLAMPenvironments with High Availability (HA) and Redundancy (Linux Apache MySQL PHP)
• Packages/ joining the server to Active Directory, etc.
• Troubleshot various issues as they would arise in various UNIX based platforms and software titles, including RedHat, Debian, CentOS, FreeBSD, Ubuntu, Solaris
• Configuring and Administrating NFS client/server.
• User Administration by creating, maintaining User’s accounts and groups, setting up User environments.
• Configuring and Administrating Telnet and FTP.
• Implemented Native Mode inSCCMfor sites that will support IBCM.
• Migrated APAC retail from Altiris toSCCM.
• Upgraded 4SCCMprimary servers from Windows 2003 R2 to Windows 2008 R2.
• Maintaining file systems, Checking and repairing file systems and monitoring file system usage.
• Implementation & Managing of RAID levels like RAID 0, RAID 1, RAID 5 using Solaris Volume Manager.
• Implemented a Continuous Delivery framework using Jenkins,Ansible, Maven & Nexus in Linux environment.
• Troubleshooted NFS related issue.
• Network concepts like configuring the hosts with name and IP, Enabling IP.
• Networking - NFS, Telnet, FTP, ifconfig.
• Automated daily tasks using Shell andAnsible.
• Automated OS builds and Application Installation throughAnsible.
• Using Maven,AnsibleScripts with Gradle to build the application and deploy.
• Administrating software Package like adding, deleting of software packages in Solaris.
• Configuring FTP, Telnet and SSH services on the machine.

Confidential

Jr. Linux Administrator

Responsibilities:

• Worked as a System administrator, maintenance and monitoring various day-to-day crontab.
• Took care of the day-to-day operations, install software, apply patches, manage file systems, monitoring performance and troubleshoot alerts.
• Worked with network, system, security and storage teams to prepare and configure new servers for the environment.
• Installation, configuring, modifying & Managing DNS Servers.
• Windows Server (2008/2012) Installations, Configuration, Migrations and design Planning.
• Perform Active Directory administration of Users, Groups, and DNS.
• Experience in applying patches and plug-ins for JBoss application server.
• Installed and configured JBOSS Application servers on DEV, QA, and PROD Systems.
• Migrated Applications from UNIX (Solaris, AIX, and HPUX) to Linux (RedHat) Systems.
• Tuned OS parameters like SWAP and virtual memory setting s to improve the JBOSS performance.
• Batch scheduling, batch scripting, nightly backups and network troubleshooting.
• Application Migrations which include Environment setup, Compatibility Testing and Installation.
• Mapping shared drives as needed to user Laptop and Desktop for future Access.
• Analyze and resolve conflicts related to merging of source code for SVN and Git.
• Installed, administered and managed Red Hat Linux, SLES, Solaris, HP-UX andAIXservers.
• Exporting a file system for systems, NFS Server/Client.
• Configuring YUM Server and installing packages by using rpm and YUM.
• Configuration and troubleshooting SSH and providing user level and system level trusting.
• Changing file permissions as per the client request.
• Handling hardware related issues like fault detection and disk replacement.
• File system managing and trouble shooting.
• Monitoring and analyzing using log files.
• Security implementation through ACL and SUDO.
• Security implementations as setuid, setgid, sticky bit.
• Resolving booting problems.
• DNS & NTP configuration & administration.
• Taking Backup and Restoring Ignite Images on theHPServers.
• Managing upgrade of Linux servers.
• Process administration and management like monitoring, start/stop/kill various processes.