SUMMARY:

• Expertise in Linux/Unix system Administration, System Builds, Server Builds, Installations, Upgrades, Patches, Migration, Troubleshooting, Security, Backup, Data Recovery, Performance Monitoring, and Fine - tuning on RHEL 5.x/6.x/7.x, SUSE, Solaris/AIX.
• Well experienced in hands on, Kickstart (PXE) and Jumpstart installation of various fully and mostly POSIX compliant systems like Solaris 9 &10,11 Red Hat 4,5, 6&7, Cento's 5 &6 and Windows, open SUSE 11 & 12.
• Very good understanding in the concepts and implementation of high availability, fault tolerance, fail over, replication, backup, recovery, Service Oriented Architecture( SOA) and various Software Development Life Cycle(SDLC) methods.
• Experienced DevOps Engineer understands the melding of operations and development to quickly deliver code to customers, Cloud and monitoring processes as well as DevOps development in Unix/Linux systems.
• Good knowledge of UNIX Shell Scripting and solid understanding of networking and security protocols
• Experience with Shell scripting, PowerShell, Python and Perl scripting.
• Implemented RHEL automated installation using Kickstart on HP /DELL hardware
• Creating and maintaining Users, Profiles, Rights, and Disk space, LVMs, RAID and Process Monitoring on Linux
• Kernel Patching with different distributions. Checking Kernel Parameters for better Performance Tuning.
• Confidential MQ, Managed File Transfer, Integration Infrastructure, Logging, security and monitoring.
• Experience with Different storage Vendors like EMC, NetApp and Hitachi and configured DM multipath and EMC Power Path.
• Worked on Group/User administration, Startup & Shutdown Scripts, Crontab, File System Maintenance, Backup Scripts and Automation.
• Install and manage software and hardware RAID to improve fault tolerance and performance.
• Experience in installation and management of network related services like DNS, Apache, LDAP, F5 LTM, SAMBA, HTTPD, VSFTP, PROFTP, SMTP, SQUID, and Active Directory.
• Solid understanding of RPM & YUM, building, maintaining, and installing packages.
• Experience in using various network protocols like HTTP, UDP, SSL, POP, FTP, TCP/IP, SMTP DHCP, DNS, IMAP, SSH/Putty, Telnet, TCP/IP, IP(IPv4, IPv6).
• Experience in Installation of VMware ESX server, OVM, XEN and creation of VMs and install different guest OS.
• Responsible for deploying enterprise applications from Admin console and enabling security using LTPA and LDAP for admin console and application components on both UNIX and windows platforms.
• Highly experienced on Linux based server solutions like Apache, FTP, DHCP, DNS/NIS, SAMBA and NFS
• Support enterprise Storage Area Networks (SAN), and Tape Backup/Restore technology in a mission critical environment.
• Strong knowledge in Web logic 5.1, Application Server and very good experience in Web logic Clusters.
• Installation Configuration and Administration of VERITAS Volume Manager, VERITAS Cluster Server 5.0, Disk arrays in SAN environment and extensive experience in creating and managing Logical volume manager (LVM) in Red-hat Linux.
• Experience in storage technologies like Net Backup, Hitachi, EMC VMAX storage, NetApp, SAN
• Working knowledge on of different types of configuration management tools like Puppet, Chef and Ansible
• Hands on experience in Puppet deployment, dashboards configurations and Puppet DB.
• Experience in Installation of Oracle, MS SQLServer and MYSQL.Worked with Database administrators to tune kernel for Oracle installations on RedHat Linux and Solaris Servers.
• Experience working in SAN environment configuring multipathing using EMC powerpath and Linux native multipathing using device mapper.
• Incident Response Plan best practices, Change/Incident Management, VMware and AWS Cloud computing and Cloud foundry.
• Experience in the Server Support, Analysis and Maintenance, ITIL approach to Incident/Change/Problem Management, Request Fulfillment, and Event Management.
• Supported a large scale Data Center projects including server installation, hardware maintenance, and break/fix activities
• 24/7 support for issues arising in production for mission critical and enterprise level applications

TECHNICAL SKILLS:

Operating Systems: Red Hat Enterprise Linux 4.x, 5.x, 6.x 7.x(ES/AS/WS); Confidential AIX 5.x, 6.x,7.1 ; Solaris 8,9&10; FedoraCore2,3,4; CentOS; Windows 2008/2010/2012 Server and MacOS X

Linux Experience: System Administration Tools, Apache, Squid Proxy Server, Tomcat, Send mail/Postfix, IP Chain/IP Tables

Virtual Environment: VMware ESXi 5.x +, vSphere, VMware Infrastructure Client, High Availability Virtualization (HAV), Snapshots and Cloning, Physical to Virtual(P2V) and V2V

Hardware: HP ProLiant DL 380,385,580,585 and HP ProLiant Blade BL 460c G7; Dell Power edge and Blades, BMC, Confidential x series, EMC Symmetrix, Clarion, Jukebox, Ethernet Hubs, Repeaters, Routers, LAN Testers, Cable Modems, Terminal Servers & Print Servers

Software: Tivoli Storage Manager (TSM)

Hardware: Snapshots on NAS or Datadomain

Data Storage: TIER 1 (T1) Fibre Channel/FCoE/iSCSI SAN, EMC VMAX or DMX Series, TIER 2 (T2), Network Attached Storage (NAS), NetApp or EMC ISILON, TIER 3 (T3) Backup/Archive, DataDomain

Networking Skills: TCP/IP, DHCP, DNS, NFS, NIS, NAS, LDAP, SMTP, SAMBA, BIND, Load Balancers (F5 LTM and GTM), Data center multi-layer switching (Cisco), Campus multi-layer switching (Juniper & Cisco), High-Availability

Security: Syslog/Log Analysis, L3 Firewalls and L7 Firewalls/IPS/IDS

Database: Oracle 9i,10g,11g; MSSQL Server ; MySQL 5.x, MariaDB Teradata

NoSQL: MongoDB, HBase (with Hadoop)

Enterprise Monitoring: Nagios, CollectD(System), Java JMX, NetIQ, Enterprise Logging (LogLogic/Splunk) JIRA

Web/Application Servers: JBoss 5.x,6,7; Tomcat 6.0,7.0; Apache; Web Logic 10.x

Message Queuing: WebSphere MQ/MQ Series - v7.1, Enterprise Service Bus (ESB/ETL) MB v8, DS v8.5, DataPower

Languages: C, C++, XML, JAVA, Shell, Python, Perl, Ruby and Yaml

System Level: OpsCode Chef, Puppet and Ansible

Application Level: Chef, Shell Scripts (Linux, PowerShell)

PROFESSIONAL EXPERIENCE:

Confidential, Columbia, MO

Linux/Unix System Administrator/ DevOps Engineer

• Administration 1000 + RHEL 6.x, 7.x, SuSe/Solaris/AIX servers which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
• OS Patching Live upgrade, Manual Patching by using RPM Packages, Red Hat's Satellite server and trouble-shooting Linux/Solaris issues.
• Configured HA, DRS clusters and capacity planning for new clusters, configuring FT for important VM's.
• Implemented and enabled cloud infrastructure using Vcloud Automation Center to facilitate all the necessities of the customer.
• Configured automated VM migrations using automated scripts in PowerShell. Standardized network cable runs for VMware hosts across multiple data center.
• Analyzed and Implemented OS patches and hot fixes as well as other OS configurations and updates using Blade Logic Patch Management tool.
• Remotely managing physical rack mount/blade servers using HP ILO(Integrated Light Out) 2.0, 3.0, Avocent KVM switch, HP Onboard Administrator, and HP Insight Management tools.
• Restoring files/folders on Confidential TSM backups using Backup-Archive GUI on Windows 2008/2012 Production servers.
• Experience working in VMware ESX (VSphere) hypervisor for virtualization and installed different OS such as Solaris, Linux (RHEL), Windows.
• Hitachi LUN/NetApp Volume Provisioning on windows and UNIX servers, Cluster servers, VMware.
• Performed routine software maintenance to support growth and OS patches on Sun and AIX servers.
• Use HPSA to push software and security policy software, patches VMware onto server.
• Supported the 1400 Pc's and 200 Sun UNIX Servers running Solaris with different versions.
• Updating/patching Linux, Linux Virtual Machines in VMware clusters.
• Tivoli Confidential Storage Management Configuration.
• Involved in installation, configuration, upgrading, patching and administration of RHEL 5,6,7.x Servers.
• Experience supporting 7x24 production computing environments, experience in providing on-call and weekend support.
• Installation Agents like Autosys Packages and CA 7 Universal Agent.
• Experience on Managing Oracle DB, Veritas clusters on Linux environment.
• Co-ordinate and assist with the application owners and determine the criticality and the sensitivity involved in servers running the Applications.
• Build Linux Platform from scratch, Troubleshooting hard ware and software and all types of software. Ability to troubleshoot the issues based on system/security/application.
• Management and monitoring of various services using Service Management Facility and Service Administration
• Confidential MQ, Managed File Transfer, Integration Infrastructure, Logging, security and monitoring.
• Building, Installing, Configuring servers from scratch with OS of RedHat Linux.
• Building Linux servers (web-logic application, apache, DB servers etc) in large quantity as per EDC and Non EDC production requirement as well as App/Dev requirement.
• Patching of RHEL servers during outage for PCI compliance purpose as well as VCS patching for Solaris/AIX servers during weekend outage.
• Decommissioning of the old servers and keeping track or decommissioned and new servers using inventory list.
• Used Ansible and Ansible Tower as Configuration management tool, to automate repetitive tasks, quickly deploys critical applications, and proactively manages change.
• Implemented Ansible to manage all existing servers and automate the build/configuration of new servers.
• Used Ansible Playbooks to setup Continuous Delivery Pipeline. Deployed micro services, including provisioning AWS environments using Ansible Playbooks.
• Used Ansible to document all infrastructures into version control.
• Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets

Environment: RHEL Linux 6.x,7.x; AIX 6.1,7.1 Servers; Autosys, Veritas Cluster Server (VCS), VERITAS Net backup, Ansible, AWX, Yaml, Shell Scripts, Confidential MQ, Confidential Cloud, OpenStack, Kubernetes, VMware ESXi, SAN, NFS, XML, Shell Scripting. Windows server, Jenkins; Oracle 11g; Dynatrace, DB2;MySQL, Postgres, ServiceNow, AWS, Solaris 9,10&11 SAN (Netapp), NAS,, Windows 2012, Nagios, Jboss 4.x, Oracle Weblogic, Confidential WebSpehere.

Confidential, Columbia, MO

DevOps Engineer

• Participated in the release cycle of the product which involved environments like Development QA UAT and Production
• Regular Build jobs are initiated using the Continuous Integration tool with Jenkins.
• Wrote Puppet manifests for deploying, configuring, Install shield and managing collected for metric collection and monitoring.
• Develop and implement an automated Linux infrastructure using Puppet.
• Wrote Puppet models for installing and managing java versions.
• Implemented automated local user provisioning in instances created in Openstack cloud.
• Deploying the Openstack components on multimode with high availability environment.
• Configured Jenkins for doing builds in all the non-production and production environments. Worked extensively on Subversion as Version Control.
• Created user level of access for related GitHub project directories to the code changes.
• Performed all necessary day-to-day Subversion/GIT support for different projects.
• Used Artifactory repository tool for maintaining the Java based release code packages.
• Used Ansible and Ansible Tower as Configuration management tool, to automate repetitive tasks, quickly deploys critical applications, and proactively manages change.
• Implemented Ansible to manage all existing servers and automate the build/configuration of new servers.
• Used Ansible Playbooks to setup Continuous Delivery Pipeline. Deployed micro services, including provisioning AWS environments using Ansible Playbooks.
• Used Ansible to document all infrastructures into version control.
• Worked on Jenkins, GitHub, Puppet, Artifactory and all internal build systems for the core development team on an enterprise-level Java-based cloud orchestration/automation tool.
• Strictly enforced ITIL process while pushing builds and deployments to prod and pre-prod environments.
• Configured the user's accounts for Continuous Integration - Jenkins, Nexus and Sonar.
• Gathered all the stakeholder approvals, necessary signoffs while acting as a release manager for two development teams.
• Supported small to medium sized projects using GIT.
• Worked on integrating GIT into the continuous Integration (CI) environment along with Jenkins and Subversion.
• Worked with Performance engineers on Configuration of the environment.
• Created and deployed a tool to automate branch and project creation in subversion utilizing Perl and Puppet scripts.
• Updated and automated Release reports for Change Management.
• Worked on NoSQL database MongoDB.

Environment: RHEL Linux 6.x,7.x; AIX 6.1,7.1/Solaris Servers; Java/J2ee, Puppet, Ansible, OpenStack, Ant, Maven, GIT, SVN, Bamboo, JSON, Nexus Pro, Sonar, Jira, Shell Scripts, Kafka, Tomcat, Jenkins Java/J2ee, AWS, AWS Cloud Formation Templates, MongoDB, AWS RDS.

Confidential, Flagstaff, AZ

System Engineer

• Member of Servers supporting Linux, and Confidential -AIX environment. Installation and system administration on Red Hat Linux Enterprise servers running on ESX servers and Confidential X Series Hardware, Managing Confidential Power servers with vio and HMC servers running different versions of AIX operating system.
• Defining Security policy for Linux Servers, including Apache, Tomcat and Jboss etc.
• Creating VMware Lab setup as per Internal QA team's requirement using VMware ESXi servers.
• Support and troubleshooting of Linux Apache, MySQL, Have knowledge on MySQL, Oracle Database Administration.
• Collaborated with the EMC and NetApp team for the storage requirements.
• Involved in 24x7 supports for both production and development databases with on-call.
• Experience in Logical Volume management on Linux with LVM knowledge in HTTPS, DNS, TCP/IP protocols
• Setup and configured network TCP/IP at all levels on Linux servers.
• Experience in EMC SAN storage network configuration, Clariion 700, 600,500 Connectrix (ED64M), Connectrix Manager, and Fabric Manager Maintaining EMC and SUN servers.
• Start Stop Web logic managed servers, admin servers, Hardware Upgrades, Find Root cause Of Outage of application and upload it in Knowledge base. Maintain a log book for hardware and software problems.
• Configured Volume groups and logical volumes, extended logical volumes for file system growth needs using Redhat Logical Volume Manager (LVM) commands.
• DNS, DHCP, NFS, NIS configuration.
• Gathered Performance requirements for the application and designed performance tests for the multiple clients within the organization
• Manage internal website including initial setup, configuration and ongoing management of services (Red Hat Enterprise, Apache, MySQL etc.)
• Linux user's creation, file/dir level permissions, Sudo permissions etc.
• Using VM converter converting Physical machines in VMware VMs.
• User management, security planning and implementation.
• Setup and configured network TCP/IP at all levels on LINUX servers.
• Worked on Apache webservers and nagios.
• Handled CPU panic, disk, memory and other hardware problems with support Vendors
• Performance analysis of the environment and documented solutions in complicated issues

Environment: Red Hat Linux 5/6.x, Confidential -AIX, VMware, NOC, Ruby/Python/ Perl Scripting, NIS, NFS, LDAP server, WebLogic, Jboss; Apache Tomcat, EMC Storage SAN

Confidential, St. Louis, MO

Linux/Unix System Administrator

• Diagnosed and troubleshot system, network & storage infrastructure issues
• RedHat Enterprise Linux 4/5,Installation on HP Proliant /Dell servers using kickstart and configuration & support for various applications run on Linux environment, configuration, performance tuning, patching and maintenance.
• Planning and implementation of file system and raw device encryption.
• Working with Customer and application teams for Installing software, patches, validating space requirements, ownership and permission issues, performance monitoring.
• Day to day jobs include Scheduling and monitoring backups, applying fixes, patches, firmware updates, operating system upgrades, volume group/logical volume creation/modification, hardware replacement, System health checking. Reporting to management team for their query's about system compliance and other issue.
• Develop application run-books and work-books by defining the applications running on the physical servers. Research on the steps to be collected for the un-hardening and the hardening of servers.
• Customize the migration life cycle concepts and implement the best practices that ensure quality standards and less downtime through the process.
• Worked on patch management and experienced with creating and assigning new kernels.
• Configured and administered of Apache, TOMCAT, and FTP for Production servers.
• Configuration and support of corporate Sendmail, IMAP and POP.
• Using iptables and ssh to configure firewall and security issues on the client servers.
• Installed, configured administered, and supported 500+ Red Hat Linux servers
• Installed, maintained and regularly upgraded Red Hat Linux Servers using kickstart-based network installation
• Administration of user accounts, added and deleted accounts on Unix systems, and assigned rights to various user groups
• Provided intensive support in the maintenance of SAMBA and NFS
• Installed, configured and maintained HTTPD server for Intranet specifications
• Installed, configured and troubleshot Linux and Windows servers
• Maintained system configuration files to handle high volume data
• Set up backup methods like tar, cpio, kdump, tcpdump (ufsdump)

Environment: Red Hat Linux 4/5, BMC, Ruby, Samba, NFS, HTTPD & IMAP Servers

Confidential, Milwaukee, WI

Linux/Unix System Administrator

• Responsible for the data center in a 24x7 environment
• Setup and maintained NFS, NIS, HTTP, SSL, CGI, JSP, LDAP, NIS and TCP/IP network, configured the systems for TCP/IP Networking
• Involved in Security Administration, User Administration, Disk Management, Daily Backup and Restore operations, networking service, performance, and resource monitoring
• Configured and resolved - LAN, WAN and TCP/IP issues and generated reports to show the trends of Resource Utilization, User/CPU/network load
• Wrote & modified shell scripts (Perl, C, ksh) & cron to perform automated administration tasks
• I have worked with LAMP (Linux, Apache, My-SQL (database), Perl and Python) and CDN.
• Configured Kickstart server to install Red Hat Linux on multiple machines
• Provided security using SSH, SSL, IPchains, IPtables, and TCPWrappers
• Performed routine checks on the systems and utilized admin tools like admintool, smit, linuxconf, vmsat, iostat, TOP, traceroute, ping and SAR
• Performed the installation and configuration of Apache Web server
• Contributed to Red Hat Satellite Server implementation, and performed administrative tasks such as adding users, groups, systems, manage packages using Red Hat Up2date agent & traceback operations
• Developed automated processes that ran daily to check disk usage and performed cleanup of file systems on UNIX environments using shell scripting and CRON
• Dell Open Manage and DRAC configuration experience
• Experienced in troubleshooting critical hardware and software issues and daily user trouble tickets