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Hadoop Grafana Dashboard

Hadoop Grafana Dashboard Not Showing Correct Data

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Grafana dashboard is very useful to check the hadoop services like hbase,hive,hdfs etc services load,utilization and other metrics. Recently we upgraded the Hadoop cluster from HDP 3.1.X to HDP 3.1.X, after that...
stop hadoop services in correct order

What is The Correct Order to Stop Hadoop Services in Ambari Manually

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Before performing any upgrades or uninstalling software, stop all of the Hadoop services in the following order: RangerKnoxOozieWebHCatHiveServer2Hive MetastoreHBaseYARNHDFSZooKeeperHueStormKafkaAtlas In our last post we discussed about...
What is The Correct Order to Start Hadoop Services in Ambari Manually

What is The Correct Order to Start Hadoop Services in Ambari Manually

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In ambari webui there is an option to start all the services with one click, Some times that start all option will not work properly due to some technical challenges then what...

Shell Script to Install Ambari Agent on all nodes from One node

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If we want to add new datanodes to your existing hadoop cluster first we need to install ambari agents on all nodes. Ambari agents we can install two ways.
Hadoop Datanode Decommission tuning process

Hadoop Datanode Decommission Tuning Process

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Before start the decommission of hadoop datanode we better to recheck some key points to avoid issues in middle of decommission.Here i am sharing hadoop datanode decommission tuning process steps based on...
Hadoo Datanode Decommission Common Issues

Hadoop Datanode Decommission Common Issues

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When we are start doing the datanode service decommission process the best choice is to go with 1 or 2 servers depends on your no. of servers and rack configuration. Here i...
Shell Script to Run Commands on Multiple Servers from One Server

Shell Script to Run Commands on Multiple Servers from One Server

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If you have 100 nodes cluster and you want to find out uptime of all 100 servers. If any tool installed on your node, that can help you to run commands on...
How-to-Create-Delete-Update-Format-Disk-Partitioning-in-Linux

How to Create/Delete/Update/Format Disk Partitioning in Linux

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Partitioning is very important task and regular task for the Linux / Hadoop admins. Usually when we start doing the build activity when come to work with disks first tasks is to...
Luks-setup-in-linux.png

Luks Encryption Setup in Linux

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LUKS (Linux Unified Key Setup). It is a disk encryption specification created by Clemens Fruhwirth in 2004. It operates on Linux and is based on an enhanced version of cryptsetup.1. LUKS is...
Disable-Kill-Application-button-in-Resource-Manager-web-UI

How to Disable Kill Application button in Resource Manager web UI

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In hadoop all jobs status we can check by using resource manager web ui. This RM web ui provide number of nodes details,memory,CPU,scheduler details options. As well as filtering the running jobs,finished...

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