刚部署完hadoop2.5.2 但是启动后过一会namenode全部死掉了，大神有知道的么

[看尽人间代码]

不会报错，有警告，警告和配置文件粘贴下面了，大神有知道的么
15/08/28 21:18:20 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting namenodes on [Node1.Hadoop Node2.Hadoop]
Node1.Hadoop: starting namenode, logging to /root/hadoop-2.5.2/logs/hadoop-root-namenode-Node1.Hadoop.out
Node2.Hadoop: starting namenode, logging to /root/hadoop-2.5.2/logs/hadoop-root-namenode-Node2.Hadoop.out
Node1.Hadoop: Java HotSpot(TM) Client VM warning: You have loaded library /root/hadoop-2.5.2/lib/native/libhadoop.so.1.0.0 which might have disabled stack guard. The VM will try to fix the stack guard now.
Node1.Hadoop: It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.
Node2.Hadoop: Java HotSpot(TM) Client VM warning: You have loaded library /root/hadoop-2.5.2/lib/native/libhadoop.so.1.0.0 which might have disabled stack guard. The VM will try to fix the stack guard now.
Node2.Hadoop: It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.
10.37.0.102: starting datanode, logging to /root/hadoop-2.5.2/logs/hadoop-root-datanode-Node2.Hadoop.out
10.37.0.103: starting datanode, logging to /root/hadoop-2.5.2/logs/hadoop-root-datanode-Node3.Hadoop.out
10.37.0.104: starting datanode, logging to /root/hadoop-2.5.2/logs/hadoop-root-datanode-Node4.Hadoop.out
Starting journal nodes [Node2.Hadoop Node3.Hadoop Node4.Hadoop]
Node3.Hadoop: starting journalnode, logging to /root/hadoop-2.5.2/logs/hadoop-root-journalnode-Node3.Hadoop.out
Node2.Hadoop: starting journalnode, logging to /root/hadoop-2.5.2/logs/hadoop-root-journalnode-Node2.Hadoop.out
Node4.Hadoop: starting journalnode, logging to /root/hadoop-2.5.2/logs/hadoop-root-journalnode-Node4.Hadoop.out
15/08/28 21:18:36 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting ZK Failover Controllers on NN hosts [Node1.Hadoop Node2.Hadoop]
Node2.Hadoop: starting zkfc, logging to /root/hadoop-2.5.2/logs/hadoop-root-zkfc-Node2.Hadoop.out
Node1.Hadoop: starting zkfc, logging to /root/hadoop-2.5.2/logs/hadoop-root-zkfc-Node1.Hadoop.out
Node1.Hadoop: Java HotSpot(TM) Client VM warning: You have loaded library /root/hadoop-2.5.2/lib/native/libhadoop.so.1.0.0 which might have disabled stack guard. The VM will try to fix the stack guard now.
Node1.Hadoop: It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.
Node2.Hadoop: Java HotSpot(TM) Client VM warning: You have loaded library /root/hadoop-2.5.2/lib/native/libhadoop.so.1.0.0 which might have disabled stack guard. The VM will try to fix the stack guard now.
Node2.Hadoop: It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.


hdfs-site.xml
<configuration>
<property>
<name>dfs.nameservices</name>
<value>lxj</value>
</property>
<property>
<name>dfs.ha.namenodes.lxj</name>
<value>nn1,nn2</value>
</property>
<property>
<name>dfs.namenode.rpc-address.lxj.nn1</name>
<value>Node1.Hadoop:8020</value>
</property>
<property>
<name>dfs.namenode.rpc-address.lxj.nn2</name>
<value>Node2.Hadoop:8020</value>
</property>
<property>
<name>dfs.namenode.http-address.lxj.nn1</name>
<value>Node1.Hadoop:50070</value>
</property>
<property>
<name>dfs.namenode.http-address.lxj.nn2</name>
<value>Node2.Hadoop:50070</value>
</property>
<property>
<name>dfs.namenode.shared.edits.dir</name>
<value>qjournal://Node2.Hadoop:8485;Node3.Hadoop:8485;Node4.Hadoop:8485/lxj</value>
</property>
<property>
<name>dfs.client.failover.proxy.provider.lxj</name>
<value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value>
</property>
<property>
<name>dfs.ha.fencing.methods</name>
<value>sshfence</value>
</property>

<property>
<name>dfs.ha.fencing.ssh.private-key-files</name>
<value>/root/.ssh/id_rsa</value>
</property>
<property>
<name>dfs.journalnode.edits.dir</name>
<value>/opt/JN/Data</value>
</property>
<property>
<name>dfs.ha.automatic-failover.enabled</name>
<value>true</value>
</property>
</configuration>


core-site.xml
<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://lxj</value>
</property>
<property>
<name>ha.zookeeper.quorum</name>
<value>Node1.Hadoop:2181,Node2.Hadoop:2181,Node3.Hadoop:2181</value>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>/opt/hadoop2.5</value>
</property>
</configuration>