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. ... View more

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? ... View more