01-23-2017 02:43 AM
We have installed cloudera manager on two different server and specified both IP address in each of agent file.
Will the agents commmunicate to both cloudera manager or not.
Note. - We have done this for to make cloudera manager HA
01-23-2017 08:24 AM
Please review the information we have provided in our documentation. We do not at present support active/active CM operation. You must setup Corosync and Pacemaker to allow for failover and resource control.
01-23-2017 08:46 AM
You don't need to install CM in two different nodes to enable HA.
I am just trying to explain in very very very high level
consider you have 5 nodes (before HA enabled)...
Node1: Master (Cloudera Manager installed), NameNode, Datanode
Node2: Master, Secondary namenode, Datanode
Node3: Slave, Datanode
Node4: Slave, Datanode
Node5: Slave, Datanode
1. HA will NOT have secondary name node. So enable HA in node2 instead of Secondary namenode
2. So you will have two namenodes (in both Node1 & Node2)
3. But always only one name node is Active and other one is Standby. You can confirm this in CM -> HDFS -> Instances (One is active and other is Standby)
4. So that if any point in time, if active breaks, the standby become active
Follow the link provided by @lhebert with above understanding.. Hope this will help you!!
01-31-2017 04:44 AM
In my case, Cloudera manager is on the same node where all other roles of CDH roles(Namenode,HbaseMaster, Spark,etc.) are installed.
My question is if this node get crashed how to I monitor and mange the cluster via cloudera manager.
Note - I have configured HA for namenode metadata and other roles. My concern is only for cloudera manager and it is using embedded postgresql.