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Ambari Forum

Confirm Hosts failed in ambari installation

  • #51299
    Mitali Sodhi


    I am setting up a four node cluster on CentOS 6.0 machines.
    I have reached the Step-3 of installation from Ambari UI, where confirm hosts have to be done.
    I am getting this error while “Registering” :
    “Registration with the server failed”

    The ambari-agent.log shows the following error:
    ERROR – Cannot register host with not supported os type,, serverOsType=redhat6, agentOsType=centos linux6

    My /etc/redhat-release file has :
    CentOS Linux release 6.0 (Final)

    /etc/issue has :
    CentOS Linux release 6.0 (Final)
    Kernel \r on an \m

    How should I solve this issue?


  • Author
  • #51301
    Mitali Sodhi

    The issue got resolved by changing the /etc/redhat-release and /etc/issue to:
    CentOS release 6.0 (Final)


    CentOS release 6.0 (Final)
    Kernel \r on an \m

    Andy Matthys-Pearce

    I ran into the same issue with Confirm Hosts with error message “Registering” / “Registration with the server failed”, for HDP 2.1 installation.

    In my case, I had incorrectly changed the url_port to 4080 and secured_url_port to 8443 in ambari-agent.ini based on an older version of installation documentation (HDP 1.x) by mistake. Correcting url_port back to 8440 and secured_url_port to 8441 in ambari-agent.ini (correct default ports for HDP 2.x) fixed the problem.

    Correct default config in ambari-agent.ini:

    hostname=<ambari server hostname>

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