hadoop 2.X HA详细配置
dfs.replication
3
dfs.nameservices
ns1
dfs.ha.namenodes.ns1
nn1,nn2
dfs.namenode.rpc-address.ns1.nn1
hadoop-yarn1:8020
dfs.namenode.rpc-address.ns1.nn2
hadoop-yarn2:8020
dfs.namenode.http-address.ns1.nn1
hadoop-yarn1:50070
dfs.namenode.http-address.ns1.nn2
hadoop-yarn2:50070
dfs.namenode.shared.edits.dir
qjournal://hadoop-yarn1:8485;hadoop-yarn2:8485;hadoop-yarn3:8485/ns1
dfs.journalnode.edits.dir
/opt/modules/hadoop-2.2.0/data/tmp/journal
dfs.ha.automatic-failover.enabled
true
dfs.client.failover.proxy.provider.ns1
org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider
dfs.ha.fencing.methods
sshfence
dfs.ha.fencing.ssh.private-key-files
/home/hadoop/.ssh/id_rsa
dfs.permissions.enabled
false
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