Please check the configured value for ha.zookeeper.quorum and ensure that ZooKeeper is running.
FATALha.ZKFailoverController:Unabletostartfailovercontroller.UnabletoconnecttoZooKeeperquorumatnode1:2181,node2:2181,node3:2181.Pleasechecktheconfiguredvalueforha.zookeeper.quorumandensurethatZooKeepe