Hadoop2.8.5 structures, QJM HA cluster, the NameNode migration is not completely effective-CodePudding

Using hadoop2.8.5 jdk1.8 machine build QJM Centos7 HA cluster first close the Namenode, can switch to the second Namenode, but NN2 closed, NN1 or standby state, help you is what reason??????

[zoo. CFG)

 
# The number of milliseconds of each tick 
TickTime=2000 
# The number of ticks that The initial 
# synchronization phase can take 
InitLimit=10 
# The number of ticks that can pass between 
# sending a request and getting an acknowledgement 
SyncLimit=5 
# the directory where the snapshot is stored. 
# do not use/TMP for storage,/TMP here is just 
# example sakes. 
DataDir=/home/zookeeper_data 
# the port at which the clients will connect 
ClientPort=2181 
# the maximum number of client connections. 
# happens this if you need to handle more clients 
# maxClientCnxns=60 
# 
Info # read the maintenance section of the 
# administrator guide before turning on autopurge. 
# 
# http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance 
# 
# The number of snapshots to retain in dataDir 
# autopurge. SnapRetainCount=3 
# Purge task interval in pump 
# Set to "0" to disable auto purge feature 
# autopurge. PurgeInterval=1 

Server. 1=node1:2888-3888 
Server. 2=2:2888-3888 
Server. 3=node3:2888-3888

Configuration file is as follows;

[hosts]

 
127.0.0.1 localhost localhost. Localdomain localhost4 localhost4. Localdomain4 
. : : 1 localhost localhost. Localdomain localhost6 localhost6 localdomain6 

192.168.81.211 node1 
192.168.81.212 2 
192.168.81.213 node3 
192.168.81.214 node4 
192.168.81.215 node5 
192.168.81.216 node6

[hadoop - env. Sh]

 
Export JAVA_HOME=/home/weblogic/jdk1.8.0 _181

[the core - site. XML]

 
 
 
 Fs. DefaultFS 
 HDFS://sxt 
 
 
 Hadoop. TMP. Dir 
/home/hadoop_tmp & lt;/value> 
 

 
 Ha. The zookeeper. Quorum 
 Node1:2181, 2:2181, node3:2181 & lt;/value>

XML HDFS - site.

 
 
 
 DFS. Nameservices 
 Sxt 
 

 
 DFS. Ha. Namenodes. Sxt 
 Nn1, nn2 & lt;/value> 
 

 
 DFS. The namenode. RPC - address. SXT. Nn1 & lt;/name> 
 Node1:8020 & lt;/value> 
 
 
 DFS. The namenode. RPC - address. SXT. Nn2 & lt;/name> 
 2:8020 & lt;/value> 
 
 
 DFS. The namenode. HTTP - address. SXT. Nn1 & lt;/name> 
 Node1:50070 & lt;/value> 
 
 
 DFS. The namenode. HTTP - address. SXT. Nn2 & lt;/name> 
 2:50070 & lt;/value> 
 

 
 DFS. The namenode. Shared. The edits. Dir 
 Qjournal://2:8485; Node3:8485; Node4:8485/sxt 
 

 
 DFS. Client. Failover. Proxy. Provider. Sxt 
 Org, apache hadoop. HDFS. Server. The namenode. Ha. ConfiguredFailoverProxyProvider 
 



 
 DFS. Ha. Fencing. Methods 
 Sshfence 
 

 
 DFS. Ha. Fencing, SSH private key - files 
/root/. SSH/id_rsa & lt;/value> 
 

 
 Fs. DefaultFS 
 HDFS://sxt 
 

 
 DFS. Journalnode. Edits. Dir 
/opt/journal/data 
 


 
 DFS. Ha. Automatic - failover. Enabled 
 true

(slaves)

 
2 
Node3 
Node4