Failed to start NodeManager caused by "/var/lib/hadoop-yarn/yarn-nm-recovery/yarn-nm-state/LOCK: Permission denied"

 

Hadoop 安装步骤：
0. 安装前准备（节点机器，环境设置，yum源设置）
1. 配置并安装Cloudera-Manager
2. 启动 CM 服务
3. 安装CDH，并配置集群
4. 启动

在启动Yarn时， NodeManager 启动失败。接下来查看对应的日志：Cloudera Manager 主页，点击YARN项操作，选择“实例”，点击角色类型，进入NodeManager 主页，在日志文件下拉框有stdout,stderr,角色日志文件，建议查看角色日志文件。

下面是角色日志文件的输出内容

Error starting NodeManager
org.apache.hadoop.service.ServiceStateException: org.fusesource.leveldbjni.internal.NativeDB$DBException: IO error: /var/lib/hadoop-yarn/yarn-nm-recovery/yarn-nm-state/LOCK: Permission denied
	at org.apache.hadoop.service.ServiceStateException.convert(ServiceStateException.java:59)
	at org.apache.hadoop.service.AbstractService.init(AbstractService.java:172)
	at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartRecoveryStore(NodeManager.java:181)
	at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceInit(NodeManager.java:245)
	at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
	at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:562)
	at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:609)
Caused by: org.fusesource.leveldbjni.internal.NativeDB$DBException: IO error: /var/lib/hadoop-yarn/yarn-nm-recovery/yarn-nm-state/LOCK: Permission denied
	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)
	... 5 more

　　

通过网络查看不只人遇到过这样的问题

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-*

　　

then try to start the node manager, it succeed.

Cheers!!!