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hadoopvirtual-machineclouderavsphereesxi

Cloudera fails to recognize hosts

Initially, i set up 2 machines (Ubuntu 12.04, x64) on vSphere server.

The name and ip of these two machines were

host                  ip
vm-cluster-node1      10.211.55.100
vm-cluster-node2      10.211.55.101

I have installed cloudera manager in vm-cluster-node1.

Then i cloned second one (vm-cluster-node2) to create 2 more hosts, and changed the ip and names as:

host                  ip
vm-cluster-node3      10.211.55.102
vm-cluster-node4      10.211.55.103

But the problem is, when i add these all 4 machines from cloudera, no matter how many times i try, i can only see two machines in hosts tab. later i realized that, if i refresh the web-page, i can see 2 machines only, but the second machine is switched between vm-cluster-node2, vm-cluster-node3 and vm-cluster-node4.

to illustrate, i have included images to make things clear.

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So, as far i've understood, the cloudera manager is not able to resolve the hosts cloned from same source as different machines. Even though the host-names and IPs have been changed. So is there anything that is common in these machines and this problem is occurring?

Solution

  • SOLVED

    The problem was that the three nodes/hosts have same HOST ID. This can be changed in /etc/hosts/cloudera-scm-agent file with CMF_AGENT_ARGS="--host_id new_host_id"