AnsweredAssumed Answered

Why doesn't the new node appear in the existing cluster?

Question asked by danj on May 25, 2016
Latest reply on May 27, 2016 by mufeed



I'm trying to add a new node to an existing cluster. All steps seems to go through successfully, but the node doesn't show up in the MapR UI.


One thing I have discovered which is different is that the storage pools in the new node are missing the clusteruuid in the /opt/mapr/server/mrconfig sp list -v command:

SP 0: name SP1, Online, size 3656365 MB, free 3655846 MB, path /dev/sdb, log 200 MB, guid 95205ac1da1d634600573ea9e9041b1a, clusterUuid 0-0, disks /dev/sdb /dev/sdc



I ran both with and without the -R flag.


Some observations:

This node is not running zookeeper. Other mapr services, like warden, seems to be running fine.

The node is not included in the NODE table of the metrics database, like the other nodes.

The other nodes can access this node through ssh, both as root and as mapr user. The new node can access the other nodes too.

The node is not present when listing all nodes in the cluster using maprcli node list command.

The node runs Ubuntu 16 with java 8, while the other nodes run Ubuntu 12 with java 7.


Any ideas how to include it in the cluster?