Need Guidance to move services from CM Server to other nodes in the cluster

Shivakuk — Wed, 07 Aug 2024 11:41:44 GMT

Hello everyone,

Our team wants to migrate the services running on CM Server i.e node03 to other nodes in the cluster except the Cloudera Manager Services. This is to test high availability so that developer won't get any issues if there is any issue with the node03 of the cluster.

Please note: We want to migrate the services individually or to find a better alternative so that we can follow the same procedure in the event of an issue. Need your expertise to discuss further on this.

CDH6.3.4

Re: Need Guidance to move services from CM Server to other nodes in the cluster

vaishaakb — Wed, 07 Aug 2024 19:57:39 GMT

@Shivakuk Thank you for bringing this to our Community.
Did you get to review the following Docs for respective role instances.

Managing Role Instances
https://docs.cloudera.com/cdp-private-cloud-base/7.1.9/managing-clusters/topics/cm-role-instances.html

Yarn Resource Manager
https://docs.cloudera.com/cdp-private-cloud-base/latest/yarn-high-availability/topics/yarn-resourcemanager-host-migration.html

Moving HDFS Roles:
https://docs.cloudera.com/documentation/enterprise/5-6-x/topics/admin_nn_migrate_roles.html#concept_w3h_m2l_2r

Zookeeper
https://docs.cloudera.com/documentation/enterprise/5-8-x/topics/cm_mc_zookeeper_service.html#ReplacingZkServerCM

Spark on Yarn:
Kindly make sure to take a backup of /etc/spark/conf folder and then proceed with the following:

Deleting Role Instance:
>Go to CM UI > Spark > Spark History Server Instance
>Click Actions > Stop
>Click Delete

Adding/Configuring New Spark Instance:

> Click on add role instances > Select on which host you want to install
> Then start the role

IMPORTANT: Please ensure to take backup of the working directories of concerned role instances, followed by re-deploying client configurations.

Let us know how it goes.

Cheers!
V

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Need Guidance to move services from CM Server to other nodes in the cluster

Re: Need Guidance to move services from CM Server to other nodes in the cluster