SUMMARY

• Linux and DevOps Engineer, Around Eight years of involvement with a solid execution foundation in wide variety of professional system support and solution - based IT services for Linux Systems (or administrations) including, monitoring, configuration, troubleshooting and maintenance of operating systems.
• Worked on Red Hat Linux, Ubuntu, Solaris, AIX, CentOS, Fedora, Windows environments, and VMware VSphere.
• Experience in Installing, upgrading and configuring Red Hat Linux 5.x, 6.x and 7.x and Debian using Kickstart Servers.
• Extensive experience with Continuous Integration Tools like Jenkins, and good working knowledge on source repository management tools like GIT, SVN.
• Experience in configuration of NIS, NIS+, DNS, DHCP, NFS, LDAP, SAMBA, postfix, FTP, remote access, security management and Security trouble shooting skills.
• Expertise in Installation, Configuration, Integration, Tuning, Backup, Crash recovery, Upgrades, Patching, Monitoring System Performance, System and Network Security.
• Configured and used Jumpstart, Kickstart, Ignite and NIM to install OS.
• Experience in administration, installation and configurations of Apache web servers.
• Worked on Data-Center operation and maintenance across UNIX and Linux platforms.
• Experience in Creation and managing user accounts, security, disk space and process monitoring in Debian and Red Hat Linux.
• Experience in writing shell scripts to automate the administrative tasks and management using Cron and at daemons.
• Build scripts using ANT and MAVEN build tools in Jenkins to move from one environment to other environments
• Migrated VMWARE VMs to AWS and Managed Services like EC2, S3 Bucket, Route53, ELB, EBS Etc. withAnsible.
• Managing Amazon Web Services (AWS) infrastructure with automation and configuration management tools such asAnsible.
• Experience in Red hat Linux, Debian and Oracle Solaris, AIX.
• Installation and upgradation of Packages and Patches configuration management, version Control, service pack & reviewing connectivity issue regarding security problem.
• Experience in Installing Firmware Upgrades, kernel patches, systems configuration, system Performance tuning on Unix/Linux systems.
• Good knowledge on different types of installations using CD/HDD/NFS as well as Kickstart and Jumpstart methods.
• Extensive experience with Continuous Integration Tools like Jenkins, and good working knowledge on source repository management tools like GIT, SVN.
• Implemented active directory using LDAP services and used in conjunction with PAM (pluggable Authentication Module).
• Worked with Users, Groups, Special Permissions, different file systems, Cron jobs, Yum repos And RAID level configuration.
• Experience in Server monitoring, capacity planning, application and log monitoring with the help of Nagios, Cacti and Splunk.
• Experience in Resolving Incident, Problem and Change Tickets inServiceNow.
• Good understanding of OSI Model, TCP/IP protocol suite (IP, ARP, TCP, UDP, SMTP, FTP and TFTP).
• Experience in configuration of NIS, NIS+, DNS, DHCP, NFS, LDAP, SAMBA, postfix, FTP, remote access, security management and Security trouble shooting skills.
• Web server configuration, load balancing, network configuration to app server, proxy pass Configuration, and rewrite rules, checking error & access log and virtual hosting.
• Installation and configuration of JBoss, Web Sphere Application Server on Linux and Solaris boxes.
• Admin console management, checking logs, application deployments, JDBC configurations, cert configurations, cluster management, Bus & User management, messaging services & troubleshooting.
• Experience in supporting, managing, and troubleshooting systems that are live and in production.
• Installed and administeredNexusrepository to deploy the artifacts generated by Maven and to store the dependent jars which are used during the build.
• Participation in component and data architecture design, performance monitoring, product Evaluation and buy versus build recommendations.
• Experience in systems analysis, design and a solid understanding of development, quality Assurance and integration methodologies.
• Experience in Implementing a Continuous Delivery framework using Jenkins, Puppet, and Maven &NexusinLinux environment.
• Installed and configuredSonarserver and client configured Jenkins jobs to runSonarAnalysis jobs.
• Experience developing and deploying analytics within a heterogeneous schema environment.
• Working knowledge with AWS - Amazon Web Services for application migration from hard Structure to Amazon Cloud.
• Knowledge on code commit and code deploy.
• Performed allLinuxoperating system, disk management and patch management configurations, on Linuxinstances in AWS.
• Excellent command over chef and puppet to deploy code on multiple servers at a time.
• Experience in different scripts like python, ruby to write required code and implementing through chef and puppet.
• Experienced in WritingChefRecipes to automate our build/deployment process and do an overall process improvement to any manual processes.
• Good understanding over Software Development Life-Cycle (SDLC) and agile development methodology.
• Providing support to applications in production by tracking production problems and troubleshooting them to sustain application in production.

TECHNICAL SKILLS

Operating Systems: RHEL 3/4/5/6, Ubuntu 12.x, 13.x, Solaris Release 2.x, 7, 8,9,10 Confidential -AIX 5.x, Windows 98, Windows 2000,2002,2008,2010.

Hardware: HP ProLiant, Blade servers, Sun Servers E450, E3500, E4500, E5000, E6500, E10k, E15k, E25k, Sun Ultra s, V210, V280, V490, V880, V6800 SUN Ray (1g Ultra-Thin Client) SUN Desktops (SPARC 10, 5), DMX3 and DMX4 Storage Arrays, F5. Server 4.x, 5.0, 5.1, 6.0, VERITAS NetBackup 6.0, MS-Office/MS- Project. 4.0/5.0, MQ SeriesV6.0, V7.x. nslookup, RIP, TCP/IP, and tcpdump, Cluster Servers 3.x, 4.x.

Software: Veritas Volume Manager 3.5/4/5, Veritas File System, Veritas Cluster

Web/ Application Server: Apache-tomcat, JBoss, WebLogic, WebSphere, Apache, Http Server, IIS

Network Protocols: DHCP, DIG, DNS, SNMP, SMTP, Ethernet, IOS, net stat, NFS, NISCluster Environment Red hat cluster suite, Sun Cluster Servers 2.2, 3.1, 3.2 and VERITAS

Programming Languages: C, SQL, HTML, Java Script PHP, XML, Perl and Shell Programming, Python, Ruby.

Backup Management: VERITAS NetBackup 4.x/5.x/6.x, ufsdump, ufsrestore, tar, dd, cpio, Dump.

Monitoring Tools: Net Stat, NMap, TCP Dump, Service Now, Nagios, site scope, cacti, Munin, Wireshark.

Other Skills: VMware, VCenter Server, VMware Server, Solaris Zones, LPAR, TSM.

PROFESSIONAL EXPERIENCE

Linux Administrator/ Devops Engineer

Confidential, Boston, MA

Responsibilities:

• Installation and configuration of RedHat EnterpriseLinux6/7, Solaris 9/10/11 and Ubuntu systems.
• Installing Red Hat Linux using kickstart and applying security policies for hardening the server based on the company policies.
• Acquiring the applications from business owners to migrate them to the cloud.
• Creating the platform in AWS (Amazon Web Services Tool) according to the requirement.
• Building application and Web servers in the AWS for migration setup and making sure they are interconnected with respective network elements.
• Worked with Security team for required authentication setup and make sure the things are going properly.
• Coordinating with SSL team for the s to be installed in the system.
• Coordinating with java developers for necessary code enhancements.
• Acquiring the code from developers and deploying in the application servers.
• Configuring the web servers based on the developer requests.
• Maintaining Dev & Stage environments throughout the life cycle.
• Planning & implementing application to go live activity to the production environment.
• Installed packages and patches using Red Hat satellite servers.
• Assisting in installing a new version of RHEL Satellite server and implementing the frequent RHEL patching strategy.
• Implemented rapid provisioning and life cycle management for Red hatLinuxusing kickstart and puppet.
• ImprovedLinuxOS deployment and management by creating customized kickstart scripts and installingpuppet.
• Usedpuppetfor central management ofLinuxconfiguration files and software package management.
• Administration, package installation, configuration of Oracle Enterprise Linux 5.4.
• Installed and configured application server JBoss and web server Apache and Tomcat.
• Worked on Installing and configuring Puppet and creating manifests for new servers and pushing them to servers using modules.
• Installed packages, patches and SSL s on all web servers.
• Installed and configured a basic LDAP server on an Ubuntu 12.04 VPS.
• Installed and configured monitoring tools Service Now, Nagios, Splunk.
• Installed Check MK for monitoring performance and health of networking devices, servers and infrastructure systems.
• Wrote scripts using Python to automate routine tasks like Selective file removal, disk space utilization & Process management and also has good knowledge in PHP and HTML languages.
• Python scripts to automate post provisioning and server build process.
• Wrote Shell scripts to automate the administrative tasks using cron.
• Editing crontab, adding and deleting automated scripts.
• CreatedChefdriven configuration of user accounts.
• Install packages onChefonly when necessary by managing the attributes.
• Performing tape backups, archiving and checking data integrity through Shell Scripts and job automation.
• Worked on the concept of GIT cloning to create GIT repository.
• Installed and configured VMware ESX server instances for virtual server setup and deployment. Responsible for creating VMware virtual guests running on Linux, Windows.
• Install the official build of MongoDB on other Linux systems from MongoDB archives.
• Helped moving things to cloud and improved disaster recovery.
• Analyzed system/application failures, examine log files; verified network connectivity.
• Performed configuration and administration of SENDMAIL server and testing the mail server.
• Experience in resolving Incident Tickets inServiceNow.
• Experience in configuring the user's accounts for Continuous Integration - Jenkins, Nexus andSonar.
• Remote system administration using tools SSH, Telnet, and Rlogin.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP, and familiar with Satellite Server.
• Trouble shooting server based problems with root cause
• Modified kernel parameters and system settings prior handing it over to appropriate teams.
• Took server backups of significant date prior system patch / upgrade.
• Worked with backup team to backup Linux servers using NetBackup.
• Provided 24 x7 on-call supports in debugging and fixing issues related to Linux, Solaris and WebSphere Application Servers.

Environment: RHEL 5.x/6.x servers, Ubuntu 12.04, Kickstart, Puppet, Chef, Amazon Web Services, Sonar, Nexus, Oracle ASM, JBoss, Apache, Tomcat, PHP, Python, HTML, SAN storage, Cisco Blade servers, VMware ESX, GIT repository, Service Now, Nagios, Splunk, Net Stat, NMap, DNS, NIS, FTP, GIT

Linux/DevOps Engineer

Confidential, Bellevue, WA

Responsibilities:

• Worked on installation, configuration and maintenance Red hat, CentOS and Suse Servers at multiple Data Centers.
• Used Windows 2008 R2 and installed VCenter.
• Managed Amazon Web Services (AWS) infrastructure with automation and configuration management tools such as Puppet, Ansible.
• Used all Amazon Web Services including EC2, EBS, IAM, S3, and ELB.
• Worked with production servers at multiple data centers.
• Migrated consumer data from one production server to another production server over the network with the help of Bash and Perl scripting.
• Maintained automatic environment using Chef Recipes & cookbooks within AWS environment.
• Deployed and monitor scalable infrastructure on Amazon web services (AWS) & configuration management using puppet.
• Designed Puppet Modules to manage configurations and automate installation process.
• Created puppet manifests and modules to automate system operations.
• Installed and setting up GIT server and repos and created hooks to trigger Jenkins projects to do automated deployment of puppet modules to puppet server and then trigger puppet agents on the nodes.
• Wrote puppet modules to configure Apache Tomcat, and different web application to improve performance.
• Developed and supported the Red Hat EnterpriseLinuxbased infrastructure in the cloud environment.
• Experience in AWS, which included managing application in the cloud and creating instances.
• Developed automation scripting in Python (core) using Puppet to deploy and manage Java applications acrossLinuxservers.
• Installed Jenkins/Plug-ins 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.
• Integrated Build Process through Jenkins to various SCM tools like GitHub, SVN.
• Used monitoring tool Nagios for monitoring the network bandwidth and the hard drives status.
• Logged events from forced crash dumps and troubleshoot server issues.
• Configured yum repository server for installing packages from a centralized server.
• Configured Management Tools (PUPPET, Ansible).
• Configured Red Hat Kickstart for installing multiple production servers.
• Installed and configured DCHP server to give IP leases to production servers.
• Managed Red HatLinuxuser accounts, groups, directories and file permissions.
• Implemented Clustering Topology for high availability and failover requirement for enhancing performance and functionality.
• Installed, Configured and administrated DNS, LDAP, NFS, NIS and Send mail on Red hat Linux/Debian Servers.
• Configured, managed ESX VM's with virtual center and VI client.
• Installed packages with yum and rpm.
• Performed Disk management with the help of LVM (Logical Volume Manager).
• Created and maintained network users, user environment, directories, and security.
• Provided support for building server, deployment, user administration tasks, patching, software installation, performance tuning and troubleshooting and KVM.
• Provided 24/7 on call support onLinuxProduction Servers. Responsible for maintaining security on Red hatLinux.

Environment: RHEL 6.x/5.x, Cent OS 5.8, Apache 1.2/1.3/2.x, AWS (EC2, EBS, IAM, S3, and ELB), Sonar, Nexus Jenkins, Puppet, Ansible, Python, Ruby, DNS, LDAP, NFS, NIS, JavaScript, FTP, Postfix, DHCP, SSH, SAMBA

Linux/Unix System Administrator

Confidential, Rochester, MN.

RESPONSIBILITIES:

• Installation, configuration and upgrade of Red hatLinux3/4/5/6, Cent OS 5.8, Windows 2008 operating systems.
• Configured and installed Solaris and Red hatLinuxServers using jumpstart, Ignite, and Kickstart.
• As a Red Hatadministratorprimary responsibility includes building of new servers which includes rack mounting, installation of OS, configuring of various OS-native and third party tools, securing of OS, installing & configuring, job scheduling.
• Remote monitoring and management of server hardware.
• Involved in Server sizing and identifying, recommending optimal server hardware based on User requirements.
• Disk Replacement Strategy on AIX.
• Installed Red Hat EnterpriseLinux5/6 Operating System on servers and Blades over the network.
• Installed, configured and provided support for Tivoli Monitoring software across various OS platforms like RHEL, AIX.
• Developed UNIX shell scripts and command line scripts to automate daily routine tasks.
• Wrote UNIX shell scripts for automated installations, to extract logs using C, Bash, Perl, and Python.
• Created Power Shell script that monitored Oracle Enterprise Manager Status and emailed results.
• Configure and maintain Active Directory. Documentation, network configurations, and topologies including but not limited to TCP/IP, Frame Relay, Bridges, and Routers.
• Used Nagios for network monitoring and Secure Socket Layer (SSL) for secure access. Also formatting Firewalls, network switching and routing settings for extra client security. Configured Authority to sign Requests for SSL and configure secure talk for LDAPs, HTTPs, and SMTPs.
• Performing, monitoring, and tuning using top, prstat, SAR, vmstat, ps, iostat.
• Managed HPC cluster, performed hardware, BIOS and application upgrade.
• Used Puppet tool for managing system configurations.
• Installation, configuration and administration of VMware, Containers and Ldoms.
• Planning and implementing system upgrades including hardware, operating system and periodical patch upgrades.
• Extensive use of Bash shell for scripting.
• Validating and testing the repository locally in Oracle Virtual Machine platform.
• Troubleshoot AIX problems on all LPAR environments.
• Expertise inLinuxbackup/restore with tar including disk partitioning and formatting.
• Involved in development, user acceptance, and performance testing, production & disaster recovery server.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Involved in creating new users, groups and setup their home directories and appropriate access restrictions to software in the Active Directory environment.
• Support includes active directory, network, printer, e-mail, account, permission, group policy, domain, software and hardware troubleshooting.
• Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring

ENVIRONMENT: Red HatLinuxEnterprise servers, AIX, VLAN, SAN(Netapp), BladeLogic, Veritas Cluster Server 5.0, VMware Virtual Client 4.1, VMware Infrastructure 4.1, vSphere 5.5, WebSphere application server.

Unix/Linux Administrator

Confidential

Responsibilities:

• Installation, Configuration and upgrade of Red hat Linux (3,4,5,6), CentOS, Solaris 8, 9, 10, SUSE SLES 10,11 servers, AIX, HP-UX & Windows /2008 Operating System.
• User Administration, management and archiving.
• Configuring NFS, NIS, NIS+, DNS, Auto Mount & Disk Space Management on SUN Servers.
• Experience in Configuring and Managing Virtual Disks, Disk Mirrors & RAID Levels.
• Data Center Migration support for CX, DMX attached hosts.
• Worked with OVF "Open Virtual Machine Format" supported tools Virtual Box, Red hat Virtualization (XEN), and VMware Workstation.
• Installation, Configuration and Maintenance of Samba, Apache Tomcat, Web Sphere and Jboss servers in AIX andLinuxenvironment.
• Experience in Active directory configurations and support.
• Experience with setting upLinuxservers for Oracle Real Application Clusters and configuring SAN based mount points.
• Worked with DBA team for database performance issues, network related issue onLinux/ Unix Servers and with vendors for hardware related issues.
• Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
• Administering and Performance Tuning of WebSphere Application Server.
• Managed and upgraded UNIX's server services such as Bind DNS.
• Configuration and administration of Web (Apache), DHCP and FTP Servers inLinuxand Solaris servers.
• Supported the backup environments running VERITAS Net Backup 6.5.
• Responsible for setting Cron jobs on the servers.
• Decommissioning of the old servers and keeping track or decommissioned and new servers using inventory list.
• Expertise in Performance Monitoring and Performance Tuning using Top, prstat, SAR, vmstat, PS, iostsat etc.
• Expertise in creating and managing Logical Volume Manager in AIX, HP-UX and Red hatLinux.
• Server Consolidation and Migration of Applications on Oracle Enterprise and Java Applications.
• Experience in building Production Servers and validation for new build releases.
• SENDMAIL configurations and administrations, testing the mail servers.
• Creating new file system, managing & checking data consistency of the file system.
• Setup and configure Veritas NetBackup 5.x, 6.x and 6.5x Net Backup server / client & tape libraries.
• Monitor Modify and Optimize NetBackup activity, backup schedules and reporting to proactively avoid issues.
• Performed automated installations of Operating systems using Jumpstart, Flash Archive for Solaris and Ignite for HP-UX.
• Installation of Packages and Patches for AIX, Solaris 8/9/10, Red hatLinux4/5, HP 11.X.
• Disk and file system management through Veritas Volume Manager / Veritas File System and Solstice Disk Suite.

Environment: Red Hat EnterpriseLinux4.x, 5.x, 6.x, Sun Solaris 8, 9, 10, VERITAS Volume Manager, Oracle 11g, Samba, Oracle RAC/ASM, EMC Power path, Confidential WebSphere Application server, DELL PowerEdge 6650, HP ProLiant DL 385, 585, 580, Sun Fire v440, SUN BLADE X6250, X6270, Tomcat, JBoss.

Linux Administrator

Confidential

RESPONSIBILITIES:

• Responsible for supportingLinuxservers for production, development and testing.
• Installing, Configuring and Maintaining the DHCP, DNS, NFS, NIS, send mail server.
• User Account Management, Group Account Management, configuring dumb terminals, adding modems, formatting and partitioning disks, manipulating swap, local and remote printer management, taking and restoring backup, scheduling jobs.
• Automation of jobs through crontab and autosys.
• Performance tuning and preventive maintenance. Performed daily backup.
• Performed addition of Swap space at run time. Performed installation and configuration of LDAP
• Resolving TCP/IP network access problems for the clients.
• Adding servers to domain and managing the groups and user in AD, installing and configuring sendmail.
• Implementing Remote System Monitoring with Sun Microsystems.
• Performed administrative tasks such as system start-up/shutdown, backups, Printing, Documentation, User Management, Security, Network management, configuration of dumb terminals.
• Troubleshooting backup and restore problems and performed day-to-day trouble shooting for the end users onLinuxbased servers.
• Develop, Maintain, update various scripts for services (start, stop, restart, recycle, cron jobs) UNIX based shell, Perl.
• Configured and maintained NIS, NFS servers onLinux.
• Setting up Oracle 8 server inLinux/Unix environment.

ENVIRONMENT: Linux(Red Hat Enterprise, Solaris Cent OS), Windows 2000/NT, HP, Confidential, Oracle 8, SSH Gate, Cisco routers/switches, NIS, NFS, Perl.