@saivenkatg55  Any updates your feedback will be appreciated. ... View more

@mike_bronson7  Sorry I just saw your response while checking my backlog you didn't tag me with @  that expalins why I wasn't notified. That's weird in fact the files you backed should be copied to this faulty node, which is the source of the problems. So thing/process MUST have deleted those files   Then follow the steps I laid out . ... View more

@mike_bronson7  it was a typo error I should have proofread again "In your case, it would good to upgrade to 7.7 and to avoid getting accidental 7.7"  should read In your case, it would good to upgrade to 7.5 and to avoid getting accidental 7.7  this should match the highest version in your cluster  else when you run system update this will automatically upgrade to the latest stable version 7.7 that why you should use the internal repo or set  subscription-manager release --set=7.5 NB. Upgrading to 7.6 as you said would mean a lot of upgrade work for  both clusters  Happy hadooping   ... View more

@mike_bronson7    I would say NO from a technical perspective, too many things changed since RHEL 7.2 mixing Family OS's in the same major release RHEL 7.2 and CentOS 7.5 is possible but while less likely, even that could lead to issues as it isn't tested. You'll want to pay close attention to versions of java, yum, python, etc on each node. You might have to edit the /usr/lib/python2.6/site-packages/ambari_server/os_type_check.sh to bypass some incompatibility and you will need to take care of the Kafka conflicts too are they the same versions?? Don't be afraid the fresh installation and configuration takes less time than fixing dependency problems and other issues but the better option is a rolling upgrade to the higher version 7.5 Between RHEL 7.5 and 7.2 you skip two releases not to speak about the jump from GNOME 3.14 to GNOME 3.26, in case the version Server with GUI is in use. Even if (only) upgrading from RHEL 7.2 to RHEL 7.4 - this is something where several problems are possible I think both ways have pros and cons. Take precautions to avoid accidental updates by using an internal repo like Red Hat Satellite Server for content and configuration management hence protecting any necessary configurations, data, and attempt the yum update. You can do an echo n | yum update to see if it generates any yum errors. In your case, it would good to upgrade to 7.7 and to avoid getting accidental 7.7 What you can do is to create a local repository that contains the packages from the RHEL 7.5 release and perform an offline upgrade to that edition, but you should disable the network in this case. Otherwise (when you run an online update) yum will pull in the latest stable packages ... which actually are from the current RHEL 7.7 release. 🙂   Solution to upgrade to 7.5 Execute the following command:         subscription-manager release --set=7.5 Clean up everything :                                   sudo yum clean all | sudo rm -r /var/cache/yum Update the software sources:                sudo yum update redhat-release-server On the HDP version, 2.5.x to 3.1.x and Ambari 2.5.x to 2.7.x can run without issues on RHEL 7.2 but RHEL 7.5 can only run HDP 2.6.0 to 2.1.4 and Ambari 2.6.2 to 2.7.4 ... View more

@JoSam   As the issue pertains to Ambari please try to share the below file please tokenize sensitive data only ambari-server.logs  ambari-server.properties /etc/hosts And the output of  # hostname -f  I have seen an instance where the IP  in /etc/hosts doesn't match the one from the output above. Was the cluster functioning well if so what changes did you make that could have triggered?   ... View more

@Caranthir  I came across this have you seen this document additional Ranger Plugin Configuration Steps for Kerberos Clusters if you are running HDP 3.1.4 on the same page you will also find some specific configs for hive. You will need to create a Kerberos principal and the below values are different with your screenshot    Values to Change  Ranger service config user Ranger service config password For hive   The above steps are for HDP 3.1.4  Hope that helps       ... View more