SUMMARY

• Solid 10+ years of extensive experience on various flavors of UNIX/LINUX (Solaris, Red Hat Linux, SUSE, HP - UX and AIX).
• Experienced in System Administration, Server builds Installs, Upgrades, Patches, Migration, Troubleshooting, Security, Backup, Disaster Recovery, Performance Monitoring and Fine-tuning on Unix/Linux systems.
• Installed, configured and maintained multiple Red Hat Satellite Servers, and custom repositories.
• Installation, configuration and maintenance of Oracle RAC 12C/10g/11g on Solaris, AIX and RedHat Linux.
• Standardized user management with groups for ease in administration Scripted semi-annual Kernel and monthly non-kernel patches for Linux using Satellite server and Python Fabric.
• Network and Authentication protocols (DNS, RPC, LDAP, Kerberos, NTLM, etc.)
• Experience in Security Hardening in UNIX, Linux servers.
• Very good experience in administration and maintenance of application services like DNS, Mail, HTTP, Apache Tomcat, Squid, Samba, DHCP, SMTP, FTP, NIS, NIS+, Auto FS, and NFS.
• Sound knowledge of VERITAS Cluster Server, VERITAS File System, and VERITAS Volume manager.
• Extensively worked on Solaris 11/10 containers, Zones for Virtualization.
• Experience of installation, administration, and maintenance of Centrify AD authentication product.
• Configured shares and provided access to clients using NFS and CIFS. Set up disaster recovery solution between FAS and Nearstore devices using Snapmirror, SnapVault scheduled Snapshots
• Strong experience in virtualization (VMware) technologies, the experience of managing VMware farm consisting 1000+ virtual machines in mission-critical enterprise environment.
• Performed kernel-tuning, performance tuning for different web and java related applications on RHEL and Solaris Servers.
• Installation, Configuration, and troubleshooting of system security applications like SUDO, SSH, Power Broker and Centrify.
• Experience in Server build using Jumpstart, flash archive, NIM, Ignite and kickstart, Strong working knowledge of scripting and programming PERL and SHELL.
• Proficient DB administration (Oracle, DB2, Sybase, and MySQL) knowledge for maintaining, pruning and performing required DB tasks.
• Experienced in working with Storage Area Network (SAN), TSM, EMC CLARiiON, Celerra, EMC Symmetrix DMX, EMC VMAX, Control Centre and VMware.
• Worked on NetApp Data ONTAP 7.x, 8.x and command System Manager
• Hands-on Experience with NetApp Filers FAS 3020/3050/3270/6240/6040 and FAS 3070
• Experience in designing and configuring open source management tools Puppet, Chef and CFEngine.
• Worked with Automation/Configuration Management tools like Puppet 2/3/4, Mcollective, BMC Bladelogic Server Automation Suite v7/8, Chef 11/12, PSSH tools.
• Developed the scripts to push patches, files and maintain configuration drift through the Puppet tool.
• Experience in installation and configuration of Web Sphere, Apache, JBoss, and IPlanet, WebLogic, LDAP, and mail servers.
• Experience using diagnostic and debugging tools such as Dtrace, Strace, truss, Top, OS tools, Bladelogic, BMC Patrol, Solaris Management Console and HP Insight Manager.
• Proficient in System Backup and Recovery from tapes using ufsdump, ufsrestore, tar, and cpio.
• Experience with Software and Hardware-based RAID 0+1, RAID 1+0 and RAID 5 on DELL, IBM, and HP servers.
• Proficient in shell scripting (Ksh/Csh/bash/Sed/Awk), PERL, Java Scripts for Oracle and Java Applications and XML.
• Potent communication skills developed through continuous interaction with global clients and management.
• Automated tasks, Deployed Applications and proactively managing and changing
• Configuration of UNIX based Servers using Puppet.
• Ability to handle the significant workload with experience in managing multiple projects concurrently in a fast pace environment.
• Independent problem solving and a good team player with strong interpersonal and communication skills.
• Experience supporting 24x7 production computing environments. Experienced providing on-call and weekend support.

TECHNICAL SKILLS

Operating Systems: Solaris 11/10/9/8, Linux (RedHat 5, 6, 7, Suse),OEL6.x IBM AIX 6.x,5.x, HPUX11.0,WindowsNT4.Windows 98/2000/2003/2008/ XP/VISTA.

Hardware: Sun Fire 25K,15K, 6800, 4800, 2900, 890, 490, 480R, 880, 240, T2000, E4900, E2900, Sun Enterprise 10K, 6500, 6000, T5220, T5240, M5000, M3000, 3500, 450, 420R, 250, Sparc server 1000, Sparc station 20,10,5, Ultra 60, 2,1 DELL PE2850, 2950, R710, R810, R910, HPC 200/240 workstations, IBM Xseries X3650/3850

Utility Packages: VERITAS Volume manager (v4.x, 5.x) VXVM, Solaris Volume Manager, VERITAS Cluster Server (v4.x/5.x/6.x) VCS, VERITAS File system VXFS (v4.x, 5.x) Admintool, Remote Admin.

Languages: Shell (BASH, C), PERL, C, C++, PHP, JAVA, PL/SQL, HTML, JavaScript, J2EE, JSP, Servlets.

Databases: Oracle 12c/11g/10g/9/8 RAC, Sybase, Mysql, DB2, Cassandra, No SQL

Networking: TCP/IP, DNS, NFS, NIS, SSH, DHCP, Cisco Routers / Switches and LAN, WAN, LDAP

Tools: Tar, Rsync, EMC Open Migrator, Nagios, Tivoli Monitoring, Remedy, BMC Patrol, Service NOW, Sendmail,Ansible

Web Technologies: Lotus Domino 5 / 6, Apache 2.0, Weblogic 8.1, WebSphere, JBoss, IPlanet, Tomcat

Configuration Mgmt Tools: BMC Bladelogic v7,8, Puppet Version 2/3/4.

Virtualization: Cluster VERITAS, Red Hat Cluster suite, Platform LSF HPC, GFS, RAC Virtual ServersVMware ESX 3.5.0 Server, VIO, VMware Infrastructure VI3, zVM, Experience in Private cloud Environments.

Cloud: Azure, AWS, GCP

PROFESSIONAL EXPERIENCE

Confidential

Senior Production Support Engineer

Responsibilities:

• Analyzing live issues to pull out/troubleshoot the cause and reason of the problem
• Perform defect Tracking and reporting with strong emphasis on root-cause analysis to determine where and why defects are being introduced in the development process.
• Executed performance tuning activities, develop monitoring processes, and provided performance recommendations for Linux environment
• Used Ansible and Ansible Tower as Configuration management tool, to automate repetitive tasks, quickly deploys critical applications, and proactively manages change.
• Design and implement a tool set that simplify provisioning and support of a large enterprise Linux environment.
• Used Ansible to document all infrastructures into version control.
• Plan, conduct and direct the analysis of business problems with automated systems solutions on the Linux platform
• Tracked, logged and responded to support tickets. Performed user account maintenance, managed incidents and provided resolution for end-users technical challenges. Troubleshoot hardware/software issues
• Plan, configure and implement features on the Linux platform that enhance availability, response time, and monitoring of key system metrics.
• Automated the build and release management process including monitoring changes between releases.
• Manage Code Repository by, maintaining code repository in GIT ; and improved practices of branching and code merging to custom needs of development team
• Created the naming strategy for branches and labels and implemented continuous integration system with Git version control repository .
• Support the collection, analysis and production metrics on process data for key performance indicators to identify improvements.
• Imported and managed multiple corporate applications in GIT .
• Managing DATA Center Inbound and outbound services. Working on Ansible automation tool.
• Migrated the current Linux environment to AWS/RHEL Linux environment and used auto scaling feature and Involved in Remediation and patching of Unix/Linux Servers
• Automated the build and release management process including monitoring changes between releases.
• Installed Operating System, other Commercial-Off-The-Shelf patches, and establish secure (hardened configurations) on servers.
• Worked with release and transition management teams on application configurations changes.
• Maintained patch and vulnerability levels to company standards.
• Performed storage expansion, migration, and reclamations on block storage from SAN on RHEL servers.
• Gather system requirements and support several project teams in evolving, testing, and rolling-out new products and services, then transitioning the site or product to post launch operations activities throughout the life of the product or service.
• Performed detailed analysis of incidents, utilize log management tools and performance data to author and submit root cause analysis reports following service outages
• Work with the application development team and other systems engineers to make improvements to current infrastructure
• Performed Kernel updates, software installation/removal and automated regular patch process.
• Participated in BCP and component failure tests based on run books.
• Worked on end-to-end application support process and escalation procedures. Collect, interpret and respond to changes in production data.
• Ensure application stability by performing maintenance activities, code deployment, engaging in automation activities, and performing root cause analysis and remediation.
• Coordinated subsystems design and total system integration. Perform and plan monthly release activities.
• Participated in application server migration project, suggested the code modifications as per new application architecture system, and perform end-to-end flow test along with upstream, downstream and business users .
• Developed and maintained housekeeping jobs to maintain consistent size of data in production environment as per Bank standards.
• Modified Unix scripts for scheduling various data cleansing scripts and loading process.
• Coordinated with the team at onsite for a smooth deployment, any change management or production issues.
• Tuned up the performance of the MQ and the applications.
• Preparing, updating and uploading Knowledge Transfer documents in the project share point folders.
• Monitor daily systems processes, insuring 100% data processing accuracy rate on critical data.
• Worked on Production Support, attending production calls, troubleshooting the application and resolving bugs.
• Setup disaster recovery procedures and document any issues encountered.
• Modify and add/delete Queue managers, Queues and Channels
• Setup remote administration for all the Queue managers.
• Involved in the preparation & planning of incident, risk and change management procedural documentation for clients.
• Experience of ITRS Geneos Monitoring tools or any other Monitoring tools
• P artition disks, create logical volumes, create file systems and mount file systems in Linux environments
• Analysis of Unix scripts, Oracle backend packages and procedures, scheduling of jobs through cron jobs etc in case of any failures.

Technologies Used: UNIX, Linux, AIX, Solaris, Oracle RDBMS, SQL, SQL Server, UNIX shell scripting, Python scripting,, IBM MQ (Message Broker), Apache Tomcat, WebSphere, WebLogic, Splunk, Geneos.

Confidential, Jacksonville FL

Sr. UNIX/Linux Systems Administrator

Responsibilities:

• Administration of RHEL 5.x/6.x/7.x, OEL 6.x, AIX which includes installation, testing, tuning, upgrading and loading patches, troubleshooting server issues.
• Mass provisioning of Red Hat Linux servers both physical and virtual using Bladelogic.
• System support for all environments and applications teams.
• Configure Vintela Authentication Servers and Powerbroker
• Virtual environment powered VMware used Vsphere client to add Virtual disks and adjust resources.
• Performed patching and OS upgrades (rebuilds from RHEL 5 to RHEL 7) on all the environments.
• Rebuilding 5.11 servers to Latest Redhat 7 versions.
• Performed weekly OS patching to address all security vulnerabilities.
• Build and configure Server for Oracle RACs creating ASM and FRA disk using oracleasm and udev rules
• Installation of Linux Servers using Satellite Server, System Imager and kickstart on VMware ESX 3.5 server and physical servers. Installation of new OS using system image of Golden client.
• Build and configure servers for IBM MQM
• Setup IBM IMM for remote management.
• Used LVM2 to combine LUNs to support ocfs2 file stems for RAC
• Configure EMC and IBM SAN using multipath to creating aliases to disk and verifying failover paths
• Strong Knowledge of ITSM and Maximo and Service Now Ticketing system.
• Installing and upgrading VMware tools on client machines.
• Extensively worked on VERITAS Volume manager and VERITAS cluster services.
• Experience in editing Password and shadow file as required as part of the administration.
• Automated tasks, Deployed Applications and proactively managing and changing configuration of Unix based Servers using Puppet.
• Created project report and wrote technical document for various projects.
• Escalated high-level technical support issues to storage vendor (EMC/SUN) and management.
• Supported Oracle, SQL database including Oracle RAC cluster implementation on SAN platforms
• Installed patched and built servers using Blade logic tool.
• Installation and configuration of management tool Puppet across RHEL environments.
• Developed the scripts to push patches, files and maintain configuration drift through the Puppet tool.
• Worked with EMC Storage team to get the LUNS and create new file systems.
• Monitored system performance using sar, prof, vmstat, iostat, netstat, Nagios.
• Tuning the kernel parameters based on the application/database requirement.
• Automated tasks using cron for users and editing crontabs.
• Knowledge of DNS, Kerberos, Powerbroker and Windows Authentication, to include authentication with other technologies for Single Sign-On
• Fundamental understanding of authentication mechanisms such as Kerberos, LDAP and NTLM and use of necessary tools to troubleshoot them.
• Identified and fixed all the security vulnerabilities.
• Installation and configuration of Databases like Oracle, Cassandra and MySQL.
• Installed and Configured RHEL 5.x\6.x and CentOS 5.x\6.x, SUSE Linux,OELVirtual Machines in VMware ESXi using vCenter Server and vSphere Client
• Creating, cloning Linux Virtual Machines, templates using VMware Virtual Client 3.5 and migrating servers between ESX hosts.
• Experience working with privileged access control in tools such as Powerbroker
• Deployed Puppet for automated management of machine configuration
• Managed Puppet infrastructure through major version upgrades. Refactored Puppet code to leverage new features.
• Installing Redhat Linux using kickstart and applying security policies for hardening the server based on the company’s policies.
• Build an RPM for installing it using satellite server on all server is to avoid vulnerabilities.
• Setting group policies, adding new OUs, moving servers to the correct OU in AD.
• Worked on end-to-end O/S administration part of Data Center Migration project.
• Installed, configured, and documented best practices of BMC Blade Logic 7.0 with Remedy.
• Installed powerbroker on servers and configured it as needed.
• Involved in support and upgrade of Puppet master server from 3.x to 4.x version on servers and clients.
• Worked with auto and manual signing of SSL certs, setting the polling intervals for pushing the manifests and source files, between Puppet Master and Agents.
• Represented the Production Support organization on company-wide project teams.
• Monitored process and software changes that impact production support communicate project information to the production support staff and raise production support issues to the project team.
• Prioritized workload, providing timely and accurate resolutions.
• Performed production support activities, which involve assignment of issues and issue analysis and resolution within the specified SLAs.
• Provided daily support with resolution of escalated tickets and act as liaison to business and technical leads to ensure issues are resolved in timely manner.
• Suggested fixes to complex issues by doing a thorough analysis of root cause and impact of the defect.
• Worked with engineering groups, Web Commerce Group, to plan, design, scope and implement development projects on pre-production as well as production systems.
• Lockdown the local accounts to secure the environment using NIS.
• Performed patching and OS upgrades (rebuilds) and associate hardware break/fix, triage and software installations related to the patching and OS upgrade activities.
• Worked on User authentication project to replace NIS authentication with AD authentication on Unix and Linux servers using Certify product.
• Configured NIC Bonding on the servers, created File systems, extended the Logical Volume space as per the business requirements.
• Installed and configured webservers such as WebSphere, WebLogic, Apache, and Tomcat.
• Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
• Troubleshooting tickets, which include storage, network, system related issues using BMC Remedy & Service Now.
• Performed Storage migrations on SAN and NAS servers.