IO error: /var/lib/hadoop-yarn/yarn-nm-recovery/yarn-nm-state/LOCK: 权限不够

错误日志如下：

下午2点11:40.502分	INFO	AbstractService	
Service org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService failed in state INITED; cause: org.fusesource.leveldbjni.internal.NativeDB$DBException: IO error: /var/lib/hadoop-yarn/yarn-nm-recovery/yarn-nm-state/LOCK: 权限不够
org.fusesource.leveldbjni.internal.NativeDB$DBException: IO error: /var/lib/hadoop-yarn/yarn-nm-recovery/yarn-nm-state/LOCK: 权限不够
	at org.fusesource.leveldbjni.internal.NativeDB.checkStatus(NativeDB.java:200)
	at org.fusesource.leveldbjni.internal.NativeDB.open(NativeDB.java:218)
	at org.fusesource.leveldbjni.JniDBFactory.open(JniDBFactory.java:168)
	at org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.openDatabase(NMLeveldbStateStoreService.java:944)
	at org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.initStorage(NMLeveldbStateStoreService.java:931)
	at org.apache.hadoop.yarn.server.nodemanager.recovery.NMStateStoreService.serviceInit(NMStateStoreService.java:204)
	at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
	at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartRecoveryStore(NodeManager.java:181)
	at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceInit(NodeManager.java:245)
	at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
	at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:562)
	at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:609)

解决方案：

login the related node server, check the permission and ownership of those directories /var/lib/hadoop-*, I got the following info

[root@elephant lib]# ls -l | grep -i hadoop
d---------. 2 root         root            6 Nov 25 05:27 hadoop-hdfs
d---------. 2 root         root            6 Nov 25 05:27 hadoop-httpfs
d---------. 2 root         root            6 Nov 25 05:27 hadoop-kms
d---------. 2 root         root            6 Nov 25 05:27 hadoop-mapreduce
d---------. 3 root         root           29 Nov 25 06:44 hadoop-yarn

they are not right. so we need to do the following steps to fix it

chown  -R hdfs:hdfs /var/lib/hadoop-hdfs
chown  -R httpfs.httpfs /var/lib/hadoop-httpfs
chown  -R kms.kms /var/lib/hadoop-kms
chown  -R mapred:mapred /var/lib/hadoop-mapreduce
chown  -R yarn:yarn /var/lib/hadoop-yarn
chmod -R 755 /var/lib/hadoop-*