I just upgraded ambari to 2.7.3 on my cluster. The cluster had previously been configured with kerberos, and running correctly. Now whenever I try to modify components I get an "admin session expired" dialog. I enter my admin credentials (kerberos) and get an invalid KDC admin error returned. I verified that the principal I entered has admin rights by logging into kadmin on the command line. The principal I am entering is the one I used when I initially configured the cluster to use kerberos. Why would this not work anymore, and how can I fix it? ... View more

I installed the mpack for HDF 3.1 on my existing cluster managed with Ambari (2.6.1.0) on Ubuntu 16.04. I registed HDF 3.1 in the 'versions' section of cluster management. This allows me to select NiFi as a service to install, however when I go to actually deploy NiFi it fails. I get the following error. E: Unable to locate package nifi-3-0-* E: Couldn't find any package by glob 'nifi-3-0-*' E: Couldn't find any package by regex 'nifi-3-0-*' Update: I think there is an issue with the "Install On" button in managing stack versions. I can not install the HDF stack or a different HDP stack to my cluster. I think this is why it is looking for 1.2 even though 1.5 of nifi is what apt can actually find. ... View more