SUMMARY

• IT professional with Over 7 years of experience on Red Hat Enterprise Linux, oracle Linux, Ubuntu Linux, AIX, HP - UX.
• Experience in Virtualization technologies like VMware Administration includes: ESX/ESXi and Citrix Xen Server/openstack. Created and managed VMs also involved in the maintenance of the virtual server.
• Understanding of networking concepts, (IE. Configuration of networks, router configuration and wireless security, TCP/IP, VPN, Content Filtering, VLANs, and routing in LAN/WLAN, Ethernet Port, Patch Panel and wireless networks.)
• Experience working on configuration management using Chef, puppet.
• Experience with CI (Continuous Integration) and CD (Continuous Deployment) methodologies using Jenkins, AWS and ANT in an Agile Environment.
• Worked on installing and updating packages in Red Hat Linux servers using RPMs and yum repositories.
• Good knowledge in writing shell scripts (Bash, Ksh, and PERL) to automate routine tasks like process management, selective file removal and disk space utilization.
• Experienced in Amazon EC2 setting up instances, virtual private cloud, and security groups.
• Expertise in Amazon AWS Cloud Administration which includes servers: EC2, S3, EBS,VPC, ELB, Route 53, Auto Scaling, Security Groups, Redshift, and CloudFormation
• Wrote basic modules for Puppet and good understanding analyzing manifests and configuration experience with software provisioning tools like Chef, puppet and knowledge on Vagrant.
• Experience with container based deployments using Docker, working with Docker images, Dockerhub and Docker registries.
• Hands on creating, maintaining user profiles, security risks, backup of data and disaster recovery.
• Deployed Puppet for configuration management to existing infrastructure.
• Experience in working on Veritas File System, Veritas Cluster, Veritas Volume Manager and Logical Volume Manager.
• Installing, configuring, and maintaining WebSphere application server, Samba, Apache/Tomcat, and Sendmail.
• Monitored and supported hundreds of Linux servers running variety of applications.
• Configured Oracle ASM disks in Oracle Enterprise Linux.
• Experience in Server monitoring, capacity planning, application monitoring with the help of Cacti, Nagios, Splunk.
• Experience in customizing the Kickstart and Jumpstart scripts to automate the installation of various servers used for various internal projects.
• Performance tuning of Linux machines in the environment by kernel parameter tuning.
• Involved in Backup and Recovery operations of various servers using VERITAS Net Backup.
• Experience in working with MySQL, Mongo DB and PostgreSQL database on Red Hat Linux Servers and installing security features on those databases.
• Built and configured Red Hat Satellite server to be used for patch and upgrade management for datacenter RHEL servers.

TECHNICAL SKILLS

Operating Systems: Red hat Linux, Centos, Suse Linux, Solaris 10/9/8, HP-UX, IBM AIX Windows NT /2000/2003, MAC OS X.

Applications and tools: GIT, CVS, Subversion, Clear case, Puppet, Chef, Ansible, ANT, Maven, Griddle. Rundeck, Nagios, Zabbix, Tivoli, Cacti, New Relic, Splunk, Jenkins, ClearQuest, Jira,AWS Virtualization

Technologies: VMware Workstation, Citrix Xen Server.

Databases: MySQL, Mango DB, Cassendra DB, Oracle 9i/10g, SQL SERVER, SQL

Networking: TCP/IP, NIS, NFS, FTP, DNS, DHCP, SMTP, SSH.

WEB Technologies: Tomcat, Apache, Jboss, Web Logic, Web Sphere, Java Script, Servlets, JDBC, JSP.

Programming & Scripting: C#, ASP.Net, XML, HTML, Bash & Shell Scripting, Perl Scripting, Python, Ruby, VB.

Backup Management: VERITAS Netbackup, Ufsdump, Symantec Netbackup.

Third-party Software: VERITAS Volume Manager, VERITAS Cluster Service (VCS), HP, Sun Cluster, EMC Storage, RAID Technologies, SSL.

Protocols: TCP/IP, UDP RIP, OSPF, EIGRP, IGRP, SNMP, SMTP, TELNET.

PROFESSIONAL EXPERIENCE

Confidential, Atlanta, GA

DevOps Engineer

Responsibilities:

• Installation and configuration of Red Hat Linux, oracle Linux and Maintenance of new server builds during the upgrade as well as worked on VMware vSphere ESXi 5.5
• Deployed Oracle Linux, Red hat Linux, and windows servers in fast paced environment.
• Managed system installation, troubleshooting, maintenance, and performance tuning, storage resources, network configuration to fit application and database requirements.
• Performed application installation and management on Linux servers for applications like JBoss 4.2.x, 5.x, Oracle.
• Created the template for the Linux that is used for deploying for the environments.
• Worked on System audit report like no. of logins, success & failures.
• Developed puppet modules and manifests to automate deployment, configuration, and lifecycle management of key clusters.
• Created JDBC connections between Database and Jboss console, and deployed applications war file through Jboss console.
• Installed and configured SSL certs through secure https port on Red hat Linux servers.
• Installed/upgraded packages using custom YUM servers & repositories Red Hat Satellite Server.
• Configured and Administered Apache, VSFTPD services, MYSQL and Tomcat.
• Actively involved in configuring puppet open source with several third parties’ applications.
• Developed a Perl script for provisioning Apache service.
• Participated in migrations from RHEL 5.3 to RHEL 6.1 and 7.1.
• Worked with Dockers and Vagrant for different infrastructure setup and testing of code.
• Managed and maintained Red Hat Satellite Server 5 and 6.
• Worked on installation and maintenance of Puppet-based configuration management system.
• Worked on migration of bulk amount production Rhel6.7 servers to AWS environment.
• Responsible for Continuous Integration and Continuous deployment process implementation using Jenkins along with Shell scripts to automate routine jobs.
• Deployed Hosted Puppet-Server on AWS for managing AWS EC2 instances.
• Worked on Configuring & monitoring DHCP server.
• Involved in installation, configuration, and troubleshooting of Apache/Tomcat application server.
• Managed logical Volume manager on Red hat Servers.
• Developed puppet blueprint for automated deployments on openstack Managed and maintained Red Hat Satellite Server 6.
• Worked on EMC storage for the virtual machine and Worked on Mail Samba & Apache Server.
• Automated various tasks using Perl, bash, shell, and python scripts.
• Worked on configuringNIS, NFS, DNS, DHCP, FTP, FSTP, Telnet and RAIDlevels.
• Extensively worked on network managementTCP/IP, NIS, DNS, NFS, VLAN.
• Worked on database replication using OCFS2 file system with oracle 10g and 11g database
• Used JIRA tracking tool to fix bugs and changes into a production environment.
• Troubleshoot the build issue during the Jenkins build process.
• Worked on SSH and other security tools and implemented SOX security compliance.
• Designed micro services deployment-using Docker.
• Maintained LVM, VxVM and SVM file systems along with NFS.
• Used GIT for version control to manage puppet code and revisions in a repository.

Environment: OEL 5.x/6.x, RHEL 5.x/6.x, Cent OS 5.x/6.x, Windows Servers 2k8r2/2012, ESXI s5.1/5.5, VMware VCenter & Vsphere, Jenkins, Puppet, GIT, LVM, Samba, NFS, NIS, netstat, Docker, SSH, nslookup, tcpdump, puppet, Python, Perl, Bash, Shell, Tomcat, and Apache.

Confidential, Jersey City, NJ

System Admin/Engineer

Responsibilities:

• Day to day administration to support 100+ Server in Production in development environments.
• Primary POC for support to all kind of issues for All of Unix and Linux environments.
• Worked on vSphere 4.1, 5.0, 5.1 /ESXi 4.1, 5.0, 5.1deployment and management.
• Extensively used scripting skills in Ruby, Perl and Bash Shell to automate various tasks and to monitor the build deployment tasks.
• Integrated VMware ESXi hypervisor with openstack.
• Worked with Red hat for finding root cause on panic issues.
• Installation and configuration of SUDO package accomplished successfully across various UNIX platforms.
• Used SUDOERS to limit user account privileges.
• Worked on Installation and configuration of Web /Application Server Tomcat and Apache.
• Troubleshoot day-to-day system and user problems various Servers on different platforms.
• Supported servers, which included NFS, NIS, LDAP, NTP, FTP, DHCP, MTA and users setup/troubleshooting.
• Automated production deployments using Perl scripting.
• Monitored Disk space, adjust VXVM Configuration& add space as and when needed.
• Worked on Remedy ticketing system.
• Maintained OS patch level using Red hat Satellite servers.
• Configured kickstart server and updated/applied patches to servers using Red hat Satellite server.
• Used puppet to automate the applications across the environment.
• Wrote various puppet manifests for deployment, automation.
• Automated data loading, extraction using Shell/Perl scripting.
• Worked on Launching Amazon EC2 Cloud Instances using Amazon Images (Linux/ Ubuntu) and Configuring launched instances with respect to specific applications.
• Supported 200+ AWS cloud instances running Ubuntu, Redhat and Windows environments.
• Worked on the configuration of server monitoring tool like Nagios and Cacti.
• Created, managed user's accounts and configured sudo and SSH for secure access.
• Configured Oracle ASM disks in Oracle Enterprise Linux.
• Automated system management tasks like user account creation, file system size monitoring, monitor system resources and system maintenance using Shell, and Perl.
• Deployed latest patches for Linux and Application servers performed tuning.
• Configured Linux Kickstart on multiple servers for network installation.
• Configured Multipath added SAN, created physical volumes, volume groups, and logical volumes.
• Worked on production support of LDAP, Domain users, Users and groups and given appropriate permissions, shares and privilege to access LAN and Domain environment.
• Implemented Redhat Conga Clustering for Apache Web Servers, Puppet, Git, SVN.
• Experienced with JIRA for change management and bug tracking.

Environment: RHEL 4/5, IBM AIX 4/5, AIX 4.x, HP-UX,E35000, Hitachi 9980v, ESX 4.x, kickstart, usfdump, Volume Manager, Web Sphere, Web Logic, Jboss, Tomcat, DNS, Cacti netstat, Perl, Docker, nslookup, DIG, SMTP, MYSQL, RDBMS, Kron, B,ash.

Confidential, Lewisville, Texas

Unix - Linux Administrator

Responsibilities:

• Administration and maintenance of Red hat Linux, Suse Linux servers and Windows servers.
• Worked on virtualization technologies like Citrix Desktop.
• Worked on User administration setup, maintaining account, Monitor system performance.
• Day to day Activities included user administration; startup and shutdown scripts; crontab, file system maintenance, backup scripting and automation using Perl, shell scripting (bash, ksh) for Red Hat Linux systems.
• Expertise in enterprise Active Directory Domain Controller design.
• Created and modified VERITAS Cluster Service Groups and managed switchover from node to node and just as importantly, from interstate primary and DR sites.
• Experienced in Windows Administration, Active directory, exchange server 2003/2007.
• Manage logical Volume manager on Red hat Servers.
• Support over Perl Scripts for web based applications.
• Configure RAID mirroring on Suse Linux platform.
• Maintained and monitoring System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
• Configuration/ Administration of Load balancers and F5's, taking servers in / out of rotation.
• Installation of VMware ESX3.5.x4.0x infrastructure on Dell Power Edge Server and administration of VMs.
• Worked on installing, integrating/tuning & troubleshooting Apache and Tomcat application server.
• Performed application installation and management on Suse Linux servers for applications like JBoss 4.2.x, 5.x, Oracle.
• Worked on Oracle and MySqL Databases and performed performance tuning and troubleshooting.
• Managing IT department's LAMP stack and configuration management.
• Configuring, administering and trouble shooting of NFS, AutoFS (Direct and Indirect Maps), NIS (master, slave and client) and DNS in multi-platform networks.
• Worked on the configuration of mail server using Send mail 8.10.x, 8.11.x.
• Installation of SAMBA 3.3.x server for interface between Linux & Windows servers to share files.
• Install and configure SSH to enable secure access to the servers.
• Modified the Linux kernel to add tracing probes for Configuration access tool.
• Environment, Command line, Current working directory, root directory, executed command.

Environment: RHEL 4/5, Solaris8/9, IBM AIX 4/5, AIX 4.x, Suse, SUNE10K, M4000/M500, E4500/5000, E35000, Hitachi 9980v, ESX 4.x, kickstart, usfdump, VERITAS Volume Manager, Web Sphere, Web Logic, Jboss, Tomcat, SMTP, MYSQL, RDBMS, samba Winbind, LAMP, Kron, Bash.

Confidential

Linux Administrator

Responsibilities:

• Administered, maintained Red Hat 4.0, 5.0 AS, ES, CentOS 5.3/5.4 troubleshooting hardware, operating system, applications & network problems and performance issues.
• Installed, configured and maintained HP-UX Linux and Solaris servers.
• Hand on experience with installed and configured Citrix Xen servers.
• Deployed latest patches performed Red Hat Linux, and Kernel Tuning.
• Install and configure DHCP, DNS (BIND, MS), web (Apache, IIS), mail (SMTP, IMAP, POP3), and file servers on AIX and Suse Linux servers.
• Implementation of Samba to help printing and file sharing in the mixed Environment.
• Provided production support of Apache and JBoss including installation, configuration, and management and troubleshooting.
• Implemented virtualization using VMware in Linux on HP-DL585 and IBM-z/VM series.
• Linux kernel, memory upgrades and swaps area and performed Red hat Linux Kickstart installations.
• Implemented day-to-day tasks in Red Hat Linux that include upgrading rpms, kernel, HBA driver, configuring SAN Disks, multipathing and LVM file system.
• Created users, manage user permissions, maintain User & File System quota on Red Hat Linux, CentOS and AIX.
• Worked on Webservers; JBoss, Tomcat 5.x/4.x/3.x & Apache Server 2.x/1. x.
• Developed Korn and Bash shell-scripts to automate routine activities.
• Data Warehousing and System Backup using tar, cpio for local systems and Veritas Netbackup for enterprise wide backup and recovery.
• Setup network printers and installed client/server applications. Defined/setup network protocols, Network File Services (NFS), and Network Information Services (NIS) in Linux
• Network trouble-shooting using ‘ndd’, 'traceroute', 'netstat', telnet, 'ifconfig' and 'snoop' etc.

Environment: Red Hat Linux 4.0,5.0 AS ES, CentOS 5.1/5.2/5.3, AIX, Suse Linux, HP-DL585, Solaris10, HACMP, 4.5.5, Oracle 9i, Samba, NT/2000 Server, Websphere, Web Logic 8.1, VMware ESX 2.x, Tomcat, Cisco IOS, Apache Server 1.x, 2.x,Jboss 5.0.

Confidential

Jr. Administrator

Responsibilities:

• Installed, Configured and maintained Red Hat Linux, CentOS, AIX and Solaris servers.
• Support to Red Hat Linux ES 4.x, 5.1, 5.2 and CentOS on various IBM hardware Servers.
• Installed and configured VMware ESX server on Solaris servers.
• Installation of HP-UX server as a firewall and Internet proxy server.
• Strong experience writing security rules for firewalls and block unwanted traffic.
• Implementation of Samba to help printing and file sharing in the mixed Environment.
• Remotely managed Linux servers using ILO, DRAC, and Virtual Console Center.
• Managed networking between Linux and Windows environment.
• Design, implementation and regular maintenance of VXFS, VVM and VERITAS Cluster, MC/Service guard Packages, load balancing.
• Configuration and administration of Fibercard Adapter’s and handling of SAN (SAN arrays, HITACHI, EMC).
• Scheduling of Daily, weekly, Monthly backups using Omni Backup, VERITAS Net backup 3.4 and TSM Backups.
• Shell Scripting for automating the System Admin tasks.
• Installation & Maintenance like replacing bad disks including bootable disks, OS, patch installation, Configuration of DNS, auto mount, and NIS and NFS services.
• Created users, printers and assigned user profiles and responsibilities to users.
• File system management over SAN (EMC).
• Troubleshooting VMware ESX server related issues, maintaining their virtual server environment, creating and deleting virtual servers.
• Worked on Ticket based problem management.
• Excellent working knowledge in implementing LDAP security models using Netscape LDAP and IBM secure way (LTPA).

Environment: Red Hat Linux 5.1,5.2, CentOS 4.6/4.7, HP-UX, IBM X-series and IBM Blade JS 21 X series 3755, Red Hat Enterprise Linux 3/4/5, Samba, EMC, manager, Net backup