Hadoop sshfence（权限被拒绝）

我正在尝试HDFS的Hadoop 2高可用性。我在用户hafence下的NameNode中设置了无密码的ssh连接。我证实了 - 它的工作原理。不过，当使用此sshfence设置时，我正在关注（权限被拒绝）。Hadoop sshfence（权限被拒绝）

2014-01-20 12:54:47,101 INFO ha.NodeFencer (NodeFencer.java:fence(91)) - ====== Beginning Service Fencing Process... ====== 
2014-01-20 12:54:47,101 INFO ha.NodeFencer (NodeFencer.java:fence(94)) - Trying method 1/1: org.apache.hadoop.ha.SshFenceByTcpPort(hafence:22) 
2014-01-20 12:54:47,101 WARN ha.SshFenceByTcpPort (SshFenceByTcpPort.java:tryFence(93)) - Unable to create SSH session 
com.jcraft.jsch.JSchException: java.io.FileNotFoundException: /home/hafence/.ssh/id_rsa (Permission denied) 
    at com.jcraft.jsch.IdentityFile.newInstance(IdentityFile.java:98) 
    at com.jcraft.jsch.JSch.addIdentity(JSch.java:206) 
    at com.jcraft.jsch.JSch.addIdentity(JSch.java:192) 
    at org.apache.hadoop.ha.SshFenceByTcpPort.createSession(SshFenceByTcpPort.java:122) 
    at org.apache.hadoop.ha.SshFenceByTcpPort.tryFence(SshFenceByTcpPort.java:91) 
    at org.apache.hadoop.ha.NodeFencer.fence(NodeFencer.java:97) 
    at org.apache.hadoop.ha.ZKFailoverController.doFence(ZKFailoverController.java:521) 
    at org.apache.hadoop.ha.ZKFailoverController.fenceOldActive(ZKFailoverController.java:494) 
    at org.apache.hadoop.ha.ZKFailoverController.access$1100(ZKFailoverController.java:59) 
    at org.apache.hadoop.ha.ZKFailoverController$ElectorCallbacks.fenceOldActive(ZKFailoverController.java:837) 
    at org.apache.hadoop.ha.ActiveStandbyElector.fenceOldActive(ActiveStandbyElector.java:900) 
    at org.apache.hadoop.ha.ActiveStandbyElector.becomeActive(ActiveStandbyElector.java:799) 
    at org.apache.hadoop.ha.ActiveStandbyElector.processResult(ActiveStandbyElector.java:415) 
    at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:596) 
    at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:495) 
Caused by: java.io.FileNotFoundException: /home/hafence/.ssh/id_rsa (Permission denied) 
    at java.io.FileInputStream.open(Native Method) 
    at java.io.FileInputStream.<init>(FileInputStream.java:138) 
    at java.io.FileInputStream.<init>(FileInputStream.java:97) 
    at com.jcraft.jsch.IdentityFile.newInstance(IdentityFile.java:83) 
    ... 14 more 
2014-01-20 12:54:47,102 WARN ha.NodeFencer (NodeFencer.java:fence(108)) - Fencing method org.apache.hadoop.ha.SshFenceByTcpPort(hafence:22) was unsuccessful. 
2014-01-20 12:54:47,102 ERROR ha.NodeFencer (NodeFencer.java:fence(111)) - Unable to fence service by any configured method. 
2014-01-20 12:54:47,102 WARN ha.ActiveStandbyElector (ActiveStandbyElector.java:becomeActive(807)) - Exception handling the winning of election

我的配置是按照HDFS-site.xml中：

<property> 
    <name>dfs.ha.fencing.methods</name> 
    <value>sshfence(hafence:22)</value> 
    </property> 
    <property> 
    <name>dfs.ha.fencing.ssh.private-key-files</name> 
    <value>/home/hafence/.ssh/id_rsa</value> 
    </property> 
    <property> 
    <name>dfs.ha.fencing.ssh.connect-timeout</name> 
    <value>30000</value> 
    </property> 

    <property> 
    <name>dfs.ha.automatic-failover.enabled</name> 
    <value>true</value> 
    </property>

哪些权限要求，用户等，以使sshfence工作？

来源

2014-01-21 jaksky

由于hadoop是从RPM软件包安装的。我们对sshfence使用了hdfs用户（包括密码较少的认证），然后sshfence开始工作。

来源

2014-01-21 11:11:11 jaksky

检查/home/hafence/.ssh/id_rsa的权限。我有这个问题。检查id_rsa上的权限。您的用户应具有读写权限。

来源

2014-01-22 12:45:03

我有一个rw的权限模式600，并没有帮助 – jaksky

Hadoop sshfence（权限被拒绝）

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