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Configuration of HA NameNodes with shared storage
Add the following properties to the hdfs-site.xml:
|
Property
|
Value
|
| dfs.nameservices | cluster_name |
| dfs.ha.namenodes.cluster_name | NN1, NN2 |
| dfs.namenode.rpc-address.cluster_name.NN1 | machine1:8020 |
| dfs.namenode.rpc-address.cluster_name.NN2 | machine2:8020 |
| dfs.namenode.http-address.cluster_name.NN1 | machine1:50070 |
| dfs.namenode.http-address.cluster_name.NN2 | machine2:50070 |
| dfs.namenode.shared.edits.dir | file:///mnt/filer1/dfs/ha-name-dir-shared |
| dfs.client.failover.proxy.provider.cluster_name | org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider |
| dfs.ha.fencing.methods | sshfence |
| dfs.ha.fencing.ssh.private-key-files | /home/myuser/.ssh/id_rsa |
| dfs.ha.fencing.methods | sshfence([[username][:port]]) |
| dfs.ha.fencing.ssh.connect-timeout | 30000 |
Add the following properties to core-site.xml:
| Property | Value |
| fs.defaultFS | hdfs://cluster_name |