Manager System Administrator

Badulla P

Mobile : +91-974*******

Email: *********@*****.***

Professional Summary

Having 6+ years of experience in WebSphere Application Server, IBM HTTP Server and Apache Tomcat Administration on Production and pre-production environments.

Technical abilities include installations, configurations, and technical support.

Strong management and administration skills in providing installation, configuration, troubleshooting, backup and recovery in multiple Application and Web Servers highlighting IBM WebSphere Application Server and IBM HTTP Server.

Configured WebSphere resources like JDBC providers, JDBC data sources.

Configured WebSphere Application Server in conjunction with DB2.

Configured WebSphere Application Server in conjunction with Oracle.

Responsible for creating clusters and implemented horizontal and vertical clustering.

Federated multiple nodes to the Deployment Manager.

Deployed applications (WAR and EAR) in various environments like Test, Stage and Production on WebSphere Application Server and Apache Tomcat.

Experience in using trouble shooting tolls like IBM Heap Analyser, Thread Analyser, Log Analysers well as traces, logs, heap dumps and core dumps.

On-call support (24x7), Monitoring and maintaining multiple Applications at Test, Stage and Production.

Excellent problem resolution and communication skills with ability to work under pressure to deliver.

PMR creation and uploading documentation using IBM service request tool and closely working with IBM to get resolve the problem and finding the root cause.

Renewed the Certificates in WAS and Tomcat by using key tool commands.

Migrated the virtual’s from IHS Web servers to Apache 2.4 Web servers.

Providing RCA for major issues

Professional Experience

Working as a Senior Consultant in Virtusa Consulting Services Pvt Ltd., Bangalore from February 2020 to till date.

Working as a Technical Specialist in IBM India Pvt Ltd., Bangalore from April 2016 to January 2020.

Worked as System Admin in Experis IT Pvt Ltd., Bangalore from December 2013 to March 2016.

Certifications

IBM Certified System Administrator - WebSphere Application Server Network Deployment V8.5.5

Qualification

B. Tech in Electronics and Communications from Jawaharlal Nehru Technological University

Technical Skills

Operating Systems

AIX 6/5L, Linux 6/5/7 and Windows

Application Server’s

WebSphere Application Server V8.x, 7.0 and 6.x

IBM MQ

WebLogic 11g and 12c

Apache Geronimo V2.17

Apache Tomcat7

TomEE

IIS

Red Hat OpenShift Cloud

Web server’s

IBM HTTP Server, Apache Webserver and OHS

Database

Oracle, IBM DB2, SQL DB and Informix

Monitoring Tool

HP Performance center, HP Diagnostic server, ITCAM and AppDynamics

Ticketing Tool

BMC Remedy, Legacy Remedy and ServiceNow

Project Summary

Client/Company: Wal-Mart Stores/IBM India Pvt Ltd

Project Duration: 31st Mar 2016 – 24th Jan 2020

Standard Role: Technical Specialist

Team Size: 40

Description: -

Wal-Mart is the world’s largest company by revenue, according to the Fortune Global 500 list in 2014, as well as the biggest private employer in the world with 2.2 million employees. The company was listed on the New York Stock Exchange in 1972. In the late 1980s and early 1990s, the company rose from a regional to a national giant. Wal-Mart’s investments outside North America have seen mixed results, its operations in the United Kingdom, South America, and China are highly successful.

Responsibilities

Responsible for all Administrative tasks in WebSphere Application Server, IBM HTTP Server and Apache Tomcat.

Responsible for installation, updating and un-installation (decommission) of applications, application serves’ and Webserver’s on TEST, STAGE and PRODUCTION environments.

Deployed various profiles which have EAR, JAR mappings to various environments including Component Integration testing boxes, Staging, QA and Prod environments and ensuring environment readiness for testing after each latest deploys.

Involved major incidents proactively and worked in Emergency releases in Prod environment. Worked closely with testing and development teams to resolve test outages in time there by improving execution turnaround time for their test scenarios.

Worked on Out-of-Cycle deploys for various environments as an immediate fix to avoid impact for release testing teams and regression testing teams.

Configured WebSphere resources like JDBC providers, Data sources, connection pooling and established database connectivity with DB2, Oracle, and Teradata on IBM WebSphere.

Configured WebSphere resources such as data sources, virtual Hosts, Webserver Plugin and session management Technique.

Implemented WLM (workload management) using server clusters in WebSphere to avoid single point of failure and distribute user load on high availability applications.

Involved in Creating and Managing the Nodes, Application Server’s and Clusters.

Trouble shooting various problems in different stages of development using logs.

Generating the core and heap dumps and analysis of dumps.

Disk Space Management aimed to maintain consistent disk space utilization by applications and application servers and to reduce the alerts generated.

Troubleshooting on issues such as federation of nodes and synchronization of nodes with WebSphere Application Server ND.

Trouble shooting on issues such as out of memory, memory leaks, hung sessions and session replication.

Installation and Configuration of Fix packs and iFixes for WebSphere application server and IBM IHHTP Server.

Generating, merging and propagating the Plugin to Webserver’s using Build Forge and manual.

Performance Tuning and monitoring using HP Performance centre and Tivoli Performance viewer.

Expertise in Remedy Ticketing tool, Implementation of Incident and Change Management.

Ensure every ticket is being walked from inception to satisfactory completion in the shortest possible time, with the best quality of response.

Continue to follow up on all alert tickets, warnings need to be updated frequently and critical needs updates at least every 15 minutes.

Renewed the certificates with updated dates and DNS entries by using ikey man tool in WAS.

Worked as a Security specialist in Wal-Mart Project for SSL Certificates installation at Web Server level (Apache Tomcat, IBM HTTP Server) and App Server level (Apache Tomcat, IBM WebSphere Application Server) as well.

Continue to look for client requests and ensure they are getting technically rich responses.

Providing support for Apache Geronimo.

Worked for Apache Tomcat Admin in Wal-Mart Project.

Have involved in Tomcat Deployments and configuration like data base configurations, JVM Ports update in server.xml file.

Have worked in certificate updates in Tomcat like updating trust store where third party certificates are stored.

Participated in Critical issues which would occur in Production environment which are causing revenue impact to business.

Working with multiple team’s (Network Team, Firewall Team, DBA Team and UNIX team) to solve critical issues.

Experis IT PVT Ltd. (deployed into Wipro Ltd) Dec 2013 to March 2016

System Administrator

Responsibilities

Installation and Configuration of the WebSphere Application servers.

Installed IBM HTTP Server 6.0 & 7.x and configured it by generating the plug-in.

Deployed applications (WAR, and EAR) in various environments like Development, Stage, LT and Production.

Managing plug-in for WebSphere application server and Web server.

Involved in Creating and Managing the Nodes, Application Server’s and Clusters.

Federated multiple nodes to a Deployment Manager.

Knowledge on Configuring Heap dumps and Core Dumps Concept.

Providing 24/7 On call support to various CISCO P1/P2 applications and resolving the issues on environment/infrastructure level.

Responsible for provision of JVM and overall support for any issues wrt to JVMs or hosts.

Performed all configuration changes (Increasing/decreasing Heap memory, Server IO time out, Session IO time out, URL context change, etc.) wrt JVMs.

Responsible for troubleshooting the issues during deployment in development, test and production environments.

Monitoring CPU utilization, JVM memory utilization, finding process id with Port number and resolving Port conflicts using various UNIX commands.

General knowledge of all logs related to the product and ability to identify and analyse logs to find relevant errors pertaining to the product.

Creation of Data Sources and configuring with WAS

Responsible for enabling/disabling the monitoring tool for the JVMs like ITCAM, App Dynamics, verbose gc and Dynatrace.

Responsible for general WAS admin tasks like stop and start of Application Servers

[Badulla]

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