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我正在尝试构建一个 3 节点集群（2 个 Namenode(nn1,nn2) 和 1 个 datanode(dn1)）。使用 Namenode WEBUI，我可以看到 nn1 处于活动状态，而 nn2 处于待机状态。但是，当我杀死活动的 nn1 时，备用 nn2 不会激活。请帮助我我做错了什么或需要修改什么

nn1 /etc/hosts

127.0.0.1 localhost
192.168.10.153 nn1
192.168.10.154 dn1
192.168.10.155 nn2

nn2 /etc/hosts

127.0.0.1       localhost nn2
127.0.1.1       ubuntu

    # The following lines are desirable for IPv6 capable hosts
    ::1     ip6-localhost ip6-loopback
    fe00::0 ip6-localnet
    ff00::0 ip6-mcastprefix
    ff02::1 ip6-allnodes
    ff02::2 ip6-allrouters

核心站点.xml (nn1,nn2)

<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://192.168.10.153:8020</value>
</property>

<property>
<name>dfs.journalnode.edits.dir</name>
<value>/usr/local/hadoop/hdfs/data/jn</value>
</property>
 <property>
 <name>ha.zookeeper.quorum</name>
 <value>192.168.10.153:2181,192.168.10.155:2181,192.168.10.154:2181</value>
 </property>

</configuration>

hdfs-site.xml(nn1,nn2,dn1)

<property>
 <name>dfs.replication</name>
 <value>1</value>
 </property>
 <property>
 <name>dfs.permissions</name>
 <value>false</value>
 </property>
 <property>
 <name>dfs.nameservices</name>
 <value>ha-cluster</value>
 </property>
 <property>
 <name>dfs.ha.namenodes.ha-cluster</name>
 <value>nn1,nn2</value>
 </property>
 <property>
 <name>dfs.namenode.rpc-address.ha-cluster.nn1</name>
 <value>192.168.10.153:9000</value>
 </property>
 <property>
 <name>dfs.namenode.rpc-address.ha-cluster.nn2</name>
 <value>192.168.10.155:9000</value>
 </property>
 <property>/usr/local/hadoop/hdfs/datanode</value>
 <name>dfs.namenode.http-address.ha-cluster.nn1</name>
 <value>192.168.10.153:50070</value>
 </property>
 <property>
 <name>dfs.namenode.http-address.ha-cluster.nn2</name>
 <value>192.168.10.155:50070</value>
 </property>
 <property>
 <name>dfs.namenode.shared.edits.dir</name>
 <value>qjournal://192.168.10.153:8485;192.168.10.155:8485;192.168.10.154:8485/ha-cluster</value>
 </property>
 <property>
 <name>dfs.client.failover.proxy.provider.ha-cluster</name>
 <value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value>
 </property>
 <property>
 <name>dfs.ha.automatic-failover.enabled</name>
 <value>true</value>
 </property>
 <property>
 <name>ha.zookeeper.quorum</name>
 <value>192.168.10.153:2181,192.168.10.155:2181,192.168.10.154:2181</value>
 </property>

<property>
 <name>dfs.ha.fencing.methods</name>
 <value>sshfence</value>
 </property>
 <property>
 <name>dfs.ha.fencing.ssh.private-key-files</name>
 <value>/home/ci/.ssh/id_rsa</value></property></configuration>

日志：（zkfc nn1，nn2）（namenode nn1，nn2）停止nn1（活动节点） https://pastebin.com/bWvfnanQ

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2 回答 2

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您在core-site.xml中提到<IP>:<port>的HA 集群。因此，当关闭您的活动名称节点时，它不知道重定向到哪里。fs.defaultFS

为名称服务选择逻辑名称，例如“mycluster”。

然后在 hdfs-site.xml 中也进行更改dfs.namenode.http-address.[nameservice ID].[name node ID]- 每个 NameNode 监听的完全限定的 HTTP 地址

在你的情况下，你必须给

核心站点.xml

<property>
<name>fs.defaultFS</name>
<value>hdfs://myCluster</value>
</property>

hdfs-site.xml

 <property>
 <name>dfs.namenode.rpc-address.myCluster.nn1</name>
 <value>192.168.10.153:9000</value>
 </property>

仔细阅读手册https://hadoop.apache.org/docs/r2.7.2/hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithQJM.html

希望这会帮助你。

于 2017-04-19T11:05:41.040 回答
0

您必须寻找自动故障转移的围栏

https://stackoverflow.com/a/27272565/3496666

https://hadoop.apache.org/docs/r2.7.2/hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithQJM.html

于 2017-04-19T08:54:01.693 回答