Sameer Modak

• Configuring, deploying, maintaining and administrating all hadoop distribution (HDP,CDH and CDP)
• Performed the major up grade from CDH to CDP.
• Installation configuration and troubleshooting jupyterhub.
• Strong knowledge of various components like HDFS, yarn, sqoop, hive, impala, hbase, Atlas,kafka and spark.
• Responsible for troubleshooting issues reported by the Developers and Business Team.
• Automating LINUX os HADOOP and KAFKA infrastructure with ANSIBLE playbook , python scripting and shell scripting.
• Administrating and troubleshooting ELK stack.
• Configured security features for authentication using Kerbores Active Directory and Authorization using Sentry and Ranger.
• Providing the suggestion and resolution on job slowness, failed and job tuning on CDP distribution services.
• Working with multiple stake holder regarding architecture designing for CDP and confluent KAFKA services data pipelines as per use case requirement
• Hands-on experience with the installation, configurations and Administrating of Kafka components like Brokers, Zookeeper, Control Center, KSQL, Schema Registry and connectors.
• Worked extensively on KAFKA security using KAFKA acl, KAFKA SSL, Zokeeper ACL, KAFKA authentication and authorization/

· Automating LINUX infrastructure with ansible playbook , python scripting and shell scripting

· Continueous integration and delivery using bitbucket,bamboo,JIRA and ansible.

· Java application production support,troubleshooting.

· Logs analysis with graylog. Metrics analysis with Grafana and Prometheus.

Administration and troubleshooting of ELK stack

· HDP installation and support.

· Contenarizing java application using DOCKER and KUBERNETES on RANCHER.

· Hands on experience in installation, configuration, supporting and managing Hadoop Clusters using Apache, Cloudera (CDH5), Yarn distributions.

· Hadoop Cluster capacity planning, performance tuning, cluster Monitoring, Troubleshooting.

· Adding/removing new nodes to an existing Hadoop cluster.

· Backup configuration and Recovery from a NameNode failure.

· Decommissioning and commissioning Nodes on running Hadoop cluster.

· Installation of various Hadoop Ecosystems and Hadoop Daemons.

· Installation and configuration of SQOOP and Flume.

· Experience monitoring and troubleshooting issues with Linux memory, CPU, OS, storage and network

· Hands on experience in analyzing Log files for Hadoop and eco system services and finding root cause.

· Experience on Commissioning, Decommissioning, Balancing, and Managing Nodes and tuning server for optimal performance of cluster.

· As a admin involved in Cluster maintenance, trouble shooting, Monitoring and followed proper backup& Recovery strategies.

· Experience in HDFS data storage and support for running map-reduce jobs.

• Hadoop installation and cluster configuration.
• Worked with Hive, Map Reduce and Sqoop
• Provisioning installing, configuring, monitoring and maintaining HDFS, YARN, HBase,Flume,sqoop and Hive on hadoop cluster .
• Adding new nodes to an existing cluster.
• Support hadoop developers and assisting in optimization of map reduce jobs.
• Managing and providing L3 support for RHEL, Oracle Linux, SUSE and CENT OS servers.
• Adhering and implementing ITIL process for NESTE, NOKIA and IKANO client.
• Following the process to resolve the incidents and changes.
• Good in customer service skills resolving technical issues and maintaining favorable relationship with the clients/vendors in solving the issues. Planning and successfully executing transition for NESTE and IKANO client.
• Automating support tasks using shell script and python scripting and ANSIBLE.
• Implementation of ANSIBLE for NESTE and IKANO client.
• Experience in managing SUSE cluster and Oracle cluster issues.
• Managing L3 support team.
• Installation configuration of DOCKER for TEST/DEV environment.

· Installation of Tomcat on Linux servers.

· Troubleshoot and resolve various issues related to AAA, Web-service, Networking, OSS/BSS end to end implementation, testing and support.

· Integration of EliteAAA on single server for different instances like Wi-Fi, Broadband,

· Hospitality etc

· Integration of MAP Gateway between AAA and HLR/STP

· Integration with Charging gateway and Bill-desk for online payment

· Wi-Fi Service Management Platform (SMP), core Session

· Management on AAA platform using RADIUS protocol. Billing and Revenue Management.

· Health check of all nodes on daily basis for WIFI, broadband stack.

· Alarm Monitoring & troubleshooting of hotspot, AAA server, DHCP server, Webin Server.

· L3 Analysis & Debugging of different log for servers, analysis of PCAP wire-shark, Ethereal.

· Taking Backups for Servers, generating Reports on daily basis

· Shell scripting for operation activities.

· MySQL administration.

· Nagios core configuration (V4.0.8) and administration.

· Linux server installation NIC bonding, server security configuration

● Installation of eClinicalWorks application and configuring it.

● Installation and configuration of MARIADB.

● Configuring NDB cluster.

● Installation of MYSQL (5.0.80, 5.5.8,5.6.*) on Linux OS as well as Windows

● Installation of Tomcat on Windows as well as Linux and configuration of tomcat.

● Installation of MySql on Windows as well as Linux and MSSQL server and its administration.

● Taking back up of MSSQL and MySql databases

● For MySql, taking backup of MYISAM as well as INNODB Database

● Creating Databases in MSSQL and MySql and adding security to Database.

● Giving support to the client who uses eClinicalWorks application and troubleshooting it.

● Exporting Database as SQL statement in MSSQL and restoring it with SQLCMD utility.

● Setting up replication in MySql and fixing the replication.

● Updating EMR related contents.

● Creating the bulk operation command line utility in excel.

● Installation of Linux operating systems.

● Installation of RPM packages on Linux.

● Managing larger MySql databases on Linux.

● Setup/Upgrade Tomcat/FTP server with SSL and NON-SSL configuration

● Shell scripting for operation activities.

● Installation of ATLAS BISON utility.

● Coding and designing maps for US(Fargo) malls using Atlas bison

● Performed Quality checks for accurate map designing as a Quality Analyst

● Worked as Project Responsible to handle the planning and man hours to complete the technical tasks.

● Automated windows task using batch script