Question regarding dns entries

[#1]

Hello,

We have got our Domain renamed from ABC to XYZ.com. Since then neither Cloudera Manager UI nor any other service UI's are accessible. As per my understanding, we would need to update the /etc/hosts file of each node in the cluster to reflect the new Domain name. however it would be great if anyone could advise on the below 2 things:

1. Do we really need to get /etc/host/file updated, OR is it taken care by Cloudera
2. Where all do we need to update the hostnames with new Domain name to have a fully functional cluster back to operational status
Currently if I manually enter the complete address (ip+new doamin name) I can login to Cloudera Manager UI but from Cloudera Manager when I try to open any service UI's like NN UI it fails.

Any help is much appreciated

Regards

Wert

[#2 · Accepted solution]

@wert_1311 Cloudera Software will not adjust /etc/hosts entries. You have to manually fix that entries and all you need is to fulfil the network Requirements in below doc: 

https://docs.cloudera.com/documentation/enterprise/latest/topics/configure_network_names.html

Also you can refer this doc for changing IPs/Hostname.

https://docs.cloudera.com/documentation/enterprise/5-13-x/topics/cm_ag_change_hostnames.html

[#3 · Accepted solution]

@wert_1311 Cloudera Software will not adjust /etc/hosts entries. You have to manually fix that entries and all you need is to fulfil the network Requirements in below doc: 

https://docs.cloudera.com/documentation/enterprise/latest/topics/configure_network_names.html

Also you can refer this doc for changing IPs/Hostname.

https://docs.cloudera.com/documentation/enterprise/5-13-x/topics/cm_ag_change_hostnames.html

[#4 · Accepted solution]

@GangWar  Thanks for your assistance