May 2014 – Jul 2015 · 1 yr 2 mos · Gurugram, Haryana, India

• Management of ~2500 Servers (Physical + Virtual) in three Data Centers.
• Created and Managed various Linux machines using VMware ESXI, vSphere and vCentre Tools.
• Written various Manifest in Puppet for syncing configurations(http,ntp,sudoers) among various servers.
• Installed, Configured and Setup Monitoring of Indexing Tool Apache Solr i.e. Creating/Optimizing #shards in Solr, Coordinator Node, Merger Node, Depths etc.
• Capacity Planning & Analysis of Apache Solr Cluster using Apache JMeter.
• Created and Managed various Paths/Nodes/Ephemeral Nodes in Zookeeper and various Queues in Apache Kafka.
• Created various tools/scripts in Python to extract Data and Setup Monitoring for Solr, Storm and other Live nodes in Clusters.
• Installed, configured and managed Build deployment tool - Glu, Ansible
• Installed and Manage Release Automation Tool i.e Git, Gerrit.
• Installation and Management of Big Data Clusters – Hadoop, HDFS, Hbase of Apache and Cloudera distro.
• Setup NameNode/Secondary Name Node/HA Cluster of HDFS

May 2013 – Apr 2014 · 11 mos · Gurugram, Haryana, India

• Worked on deploying, upgrading and Administration of Mysql DB.
• Setup Backup, Replication of Mysql through Master to Slave.
• Tuned various parameters in mysql to improve throughput.
• Setup tools for configuration management - zookeeper, Core Messaging System - Apache Kafka and Real Time Data Processing - Storm.
• Installed, Managed and upgraded various Apache Storm Clusters in 2 DCs.
• Worked on deploying, upgrading no-sql DB - Cassandra, in multiple Data Centers with Multiple Clusters.
• Setup Replication and consistency for Read/Write in Cassandra.
• Tuned Compaction, Repairs, Caches, CFs in Cassandra.
• Troubleshoot and fix various Live Site Issues.
• Deployed various live sites through reverse proxy in squid for Bot.

Apr 2011 – Apr 2013 · 2 yrs · Gurugram, Haryana, India

• Manage and ensure 1500+ Linux Servers are running smoothly in 4DCs.
• Administration and Management of Windows/Linux Servers.
• Managed Server Authentication using NIS, YPBind and Active Directory.
• Worked on Load Balancer BigIP for creating Vips, Pool and nodes.
• Created various scripts for monitoring live servers using Bash Shell.
• Deployment and upgradation of JDK, Apache HTTPD, Mysql, Tomcat.
• Worked on configuration Management tool Cfengine.
• Deployment of OS through PXE Server using KickStart.
• Provide end to end support for all Linux Users for all Kind of Problems.
• Worked with third-party vendors and Dell support to replace any Faulty Hardware of Desktop and Servers.

Jul 2010 – Mar 2011 · 8 mos · Greater Delhi Area

• Managed 5 sites of ESIC in Faridabad and provided end-to-end solution to the client problems.
• Installation and Management of Windows/Linux Desktop, servers with N-Computing Devices.
• Configured various Cisco Switches for various ESIC branches.
• Installation and Management of Network Printer.
• Manage ESIC Web Portal