萌妹子 求解hadoop集群搭建 ZKFC报错

Question

hdfs zkfc -formatZK执行后：
WARNING: Before proceeding, ensure that all HDFS services and

failover controllers are stopped!

Proceed formatting /hadoop-ha/mycluster? (Y or N) 16/02/26 01:18:56 INFO ha.ActiveStandbyElector: Session connected.
y
16/02/26 01:19:12 INFO ha.ActiveStandbyElector: Recursively deleting /hadoop-ha/mycluster from ZK...
16/02/26 01:19:12 INFO ha.ActiveStandbyElector: Successfully deleted /hadoop-ha/mycluster from ZK.
16/02/26 01:19:12 INFO ha.ActiveStandbyElector: Successfully created /hadoop-ha/mycluster in ZK.
16/02/26 01:19:12 INFO zookeeper.ClientCnxn: EventThread shut down
16/02/26 01:19:12 INFO zookeeper.ZooKeeper: Session: 0x153196bc9790000 closed
结果ZKFC还是没起来，然后我尝试：
[root@h1 ~]# hadoop-daemon.sh start DFSZKFailoverController
.........
Error: Could not find or load main class DFSZKFailoverController
但仍然报错！

Answer 1

我先尝试用**hadoop-daemon.sh start DFSZKFailoverController**

然后报错：Error: Could not find or load main class DFSZKFailoverController

又试了：**hadoop-daemon.sh start zkfc**
提示：

```starting zkfc, logging to /usr/local/hadoop-2.6.0/logs/hadoop-root-zkfc-h1.out
Java HotSpot(TM) Client VM warning: You have loaded library /usr/local/hadoop-2.6.0/lib/native/libhadoop.so.1.0.0 which might have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c ', or link it with '-z noexecstack'.

然后：

[root@h1 ~]# hadoop-daemon.sh start zkfc -z noexecstack

zkfc running as process 2556. Stop it first.

[root@h1 ~]# jps

2556 DFSZKFailoverController

2171 NameNode

2636 Jps