Changing IP address of hosts managed by ambari

[#1]

I have requirement to change the ip address of all hosts managed by ambari as we are moving server to other datacenter.

Will the ip addresses be automatically updated in ambari?

Has it worked for anyone?

Note : Hosts have been added to ambari using hostname(fqdn).

[#2 · Accepted solution]

@Rahul Pathak

That's why we recommend to use FQDN. If you used hostnames then you don't have to do anything.

[#3]

@Rahul Pathak Worse case : If cluster was deployed using IP address "I have not seen any prod deployments" then you have to pay attention to things like link

[#4]

thanks, I want to make sure it is safe to do.

[#5]

@Rahul Pathak Please do post the outcome. Thanks for using HCC !!

[#6]

Thanks. We have successfully completed the migration.

[#7]

Thanks @Rahul Pathak for following up.

[#8]

I have just done this myself with out UAT environment which we have brought in house. I have changed the IP on all the boxes and made the changes on the DNS (both forward and reverse) to reflect their new IPs.

On starting Ambari all the data nodes resolved fine but the name node is still showing the old IP in the ambari hosts data. If I ping the FQDN of the name node from the ambari box it resolves the correct IP though. Has anyone got any ideas what I need to do?

[#9]

Not to worry, I just turned the whole envionment off and on again and it looks to have resolved my issue. I'm guessing it was a cached value in NSCD that took longer to clear than the others.