Hi,   We don't share personal information like contacts, As you are facing Ambari Server issue and Agents issue is resolved, Please open a new question for Ambari Server, Also, check the Ambari Server logs you see some exceptions, attach those exceptions. ... View more

@kwabstian53  Also as we see that the webhdfs call is actually failing with 404 (resource not found) hence it will be good to find which resource is it ... gthen later we can chekc why it does not exist on HDFS> We can try grepping the "webhdfs' in the Active NameNode HDFS Audit log exactly when we notice  'HDFS Service check failure' We can grep the logs as following: # grep 'proto\=webhdfs' /var/log/hadoop/hdfs/hdfs-audit.log   So when the hdfs service check will fail then exactly at the same time we will know why it failed and for which resource. .   ... View more

@Koffi  It may or may not be related to the JDK. As currently based on the error it looks more related to the issue with the SSL keystore/certificate configured for the NodeManager. As we see the following cause of failure. Caused by: javax.crypto.BadPaddingException: Given final block not properly padded at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:989) at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:845) - Can you please let us know how you actually configured the SSL for NodeManager can you please share the exact details / properties that you changed in YARN config? - Also can you please check if you are able to list the keystore/certificate properly without any issue? - It will be good to know how did you generate the certificates Self Signed or CA Signed? - When was it working earlier? Did you recently configure the keystore/certificate for NodeManager? ... View more

@jsensharma,   Thank you very much for your prompt reply and clear answer.   The reason for wanting to downgrade was to avoid a complete re-install (for logistical reasons). The version should have been 2.6.2.0 per spec request. ... View more

@vinith_alampall  As you are getting this error: sh: 0: Can't open ./start-yarn.sh   Hence you should check couple of things:   1. Is this file existing in the current directory? # cd /PATH/TO # ls -lart /PATH/TO/start-yarn.sh 2. What is the permission on the file? Can the current user read/execute it? # chmod a+x /PATH/TO/start-yarn.sh # which sh # sh -x /PATH/TO/start-yarn.sh   Please replace the '/PATH/TO" with the actual path of the mentioned script. .       ... View more

Ambari-server restart Using python /usr/bin/python Restarting ambari-server Ambari Server is not running Ambari Server running with administrator privileges. Organizing resource files at /var/lib/ambari-server/resources... Ambari database consistency check started... Server PID at: /var/run/ambari-server/ambari-server.pid Server out at: /var/log/ambari-server/ambari-server.out Server log at: /var/log/ambari-server/ambari-server.log Waiting for server start...........................................ERROR: Exiting with exit code -1. REASON: Ambari Server java process has stopped. Please check the logs for more information. ... View more

See comments / discussion of accepted answer for the steps that ultimately solved the problem. ... View more

@Jay Kumar SenSharma Following this post helped pass the Ambari connection test, thanks. Was able to find a bit of explaination for this fix here: https://stackoverflow.com/a/47558163/8236733. However, contrary to what your answer seems to imply, despite the connection test now passing, still getting the # mysql -u root -p -h <some remote cluster node> ERROR 2003 (HY000): Can't connect to MySQL server on '<theremote cluster node>' (111) errors. Any suggestions? ... View more

this is the error ... View more