thank you so much ... View more

I think i know the problem , I will explain , we reinstall again all 3 masters machines without to delete the workers machine from the cluster , now we want to add them back to the cluster , but we get warning about the current configuration on the workers , so my question is - how to re-delete the workers machine from the cluster in spite the masters machine are new machines? what we can do in order to add the workers machine again to the ambari cluster? * we have more then 20 workers machine that we need to add to the cluster , and they not deleted from the cluster before we reinstall the masters machine ) ... View more

Hi @uri ben-ari, zookeeper name can be found from ambari (can any of the zookeeper server ) Kafka topic name is the directory name without the partition index (after Kafka-logs ex : mmno.aso.prpl.proces ) on the other note : logs are Kafka messages, not the application logs hence please look for the option to reduce the retention of the topic so that will purge some of the un-used messages from topic. ... View more

I succeeded to change it but still nodemanager cant start ... View more

@uri ben-ari That error you will get only when you have not specified the "Cluster Name" aftaer the ambari server hostname in the config.sh command: /var/lib/ambari-server/resources/scripts/configs.sh -u admin -p admin -port 8080 get amb25101.example.com plain_ambari cluster-env /tmp/cluster-env.txt . ... View more

another note the components - JournalNode,ZKFailoverController are still disable ... View more