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Data-analytics-studio-das-webui-login-LDAP-configurations

Configuring Data Analytics Studio (DAS) Authentication with Ldap

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Data Analytics Studio (DAS) is newly introduced in Hortonworks 3 (HDP 3) version. This Data Analytics Studio (DAS) application is also using in Cloudera Distribution Hadoop (CDH) and Hortonworks Data Platform (HDP)...
How-to-Fix-Crontab-Permission-Denied-issue-in-linux

How to Fix Crontab Permission Denied issue in linux

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One of the good feature in linux is crontab, by using crontab you can scheduled the scripts to run at a particular time with out any manual interruption. By default root user...
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...
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...
Another app is currently holding the yum lock; waiting for it to exit Issue in CentOS/Redhat

Another app is currently holding the yum lock; waiting for it to exit Issue...

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Everyone defiantly faced an above error another app is currently holding the yum lock; waiting for it to exit while working on centos or redhat linux environments. Generally the above error comes...
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...
Hadoop-hdfs-mapreduce-Smoketest

Hadoop Smoke Test Script For Hortonworks

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As a admin we will do lot of daily activities on our hadoop clusters. Some of them are minor/configuration changes and some are major changes like Patching / Upgrades. For the minor...
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...

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.
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...

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