Unable to start failover controller. Parent znode does not exist.

./bin/zkCli.sh -server master1

ls /

沒有看到/hadoop-ha

解決方法：

進入hadoop namenode服務器

./bin/hdfs zkfc -formatZK

在兩個namenode節點上啟動zkfc服務

./sbin/hadoop-daemon.sh start zkfc

查看master1節點狀態

./bin/hdfs haadmin -getServiceState master1

active

actice namenode節點轉移

./bin/hdfs haadmin -failover master1 master2

查看是否轉移

./bin/hdfs haadmin -getServiceState master1

standby

./bin/hdfs haadmin -getServiceState master2

active

參考：

https://blog.csdn.net/houzhizhen/article/details/44099825

ZKFC服務異常：Parent znode does not exist.