我有三个物理节点。在每个节点中,我输入使用此命令。
docker run -v /home/user/.ssh:/root/.ssh --privileged
-p 5050:5050 -p 5051:5051 -p 5052:5052 -p 2181:2181 -p 8089:8081
-p 6123:6123 -p 8084:8080 -p 50090:50090 -p 50070:50070
-p 9000:9000 -p 2888:2888 -p 3888:3888 -p 4041:4040 -p 8020:8020
-p 8485:8485 -p 7078:7077 -p 52222:22 -e WEAVE_CIDR=10.32.0.3/12
-e MESOS_EXECUTOR_REGISTRATION_TIMEOUT=5mins
-e LIBPROCESS_IP=10.32.0.3
-e MESOS_RESOURCES=ports*:[11000-11999]
-ti hadoop_marathon_mesos_flink_2 /bin/bash
i像这样配置hadoop: core-site.xml :
<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://mycluster</value>
</property>
<property>
<name>fs.default.name</name>
<value>hdfs://mycluster</value>
</property>
</configuration>
hdfs-site.xml :
<configuration>
<property>
<name>dfs.namenode.shared.edits.dir</name>
<value>
qjournal://10.32.0.1:8485;10.32.0.2:8485;10.32.0.3:8485/mycluster
</value>
</property>
<property>
<name>dfs.journalnode.edits.dir</name>
<value>/tmp/hadoop/dfs/jn</value>
</property>
<property>
<name>dfs.nameservices</name>
<value>mycluster</value>
<description>Logical name for this new
nameservice</description>
</property>
<property>
<name>dfs.ha.namenodes.mycluster</name>
<value>nn1,nn2</value>
<description>Unique identifiers for each NameNode in the
nameservice</description>
</property>
<property>
<name>dfs.namenode.rpc-address.mycluster.nn1</name>
<value>10.32.0.1:8020</value>
</property>
<property>
<name>dfs.namenode.rpc-address.mycluster.nn2</name>
<value>10.32.0.2:8020</value>
</property>
<property>
<name>dfs.namenode.http-address.mycluster.nn1</name>
<value>10.32.0.1:50070</value>
</property>
<property>
<name>dfs.namenode.http-address.mycluster.nn2</name>
<value>10.32.0.2:50070</value>
</property>
<property>
<name>dfs.client.failover.proxy.provider.mycluster</name>
<value>
org.apache.hadoop.hdfs.server.namenode.ha.
ConfiguredFailoverProxyProvider
</value>
</property>
<property>
<name>dfs.ha.fencing.methods</name>
<value>shell(/bin/true)</value>
</property>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>file:///usr/local/hadoop_store/hdfs/namenode</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>file:///usr/local/hadoop_store/hdfs/datanode</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.
ip-hostname-check</name>
<value>false</value>
</property>
<property>
<name>dfs.ha.automatic-failover.enabled</name>
<value>true</value>
</property>
<property>
<name>ha.zookeeper.quorum</name>
<value>10.32.0.1:2181,10.32.0.2:2181,10.32.0.3:2181</value>
</property>
</configuration>
问题是我格式化 namenode :
hadoop namenode -format
它不能格式化 namenode 。我收到这个错误:
2019-05-06 06:35:09,969信息IPC.Client:重试连接到服务器:10.32.0.2/10.32.0.2:8485。已经尝试了9个时间;重试策略是重峰量,fixedsleep(maxretries = 10,sleeptime = 1000毫秒(
2019-05-06 06:35:09,969信息IPC.Client:重试连接到服务器:10.32.0.3/10.32.0.3:8485。已经尝试了9个时间;重试策略是重峰量,fixedsleep(maxretries = 10,sleeptime = 1000毫秒(
2019-05-06 06:35:09,987错误namenode.namenode:无法启动Namenode。 org.apache.hadoop.hdfs.qjournal.client.quorumexception:无法检查JNS是否准备好格式化。1个例外:
10.32.0.1:8485:从50C5244DE4CD/10.32.0.1到50C5244DE4CD:8485在连接异常上失败:java.net.connectexception:连接拒绝;有关更多详细信息,请参见:http://wiki.apache.org/hadoop/connectionrefused
我已经发布了Hadoop中所需的端口,但我仍然收到连接拒绝。
有人请告诉我配置有什么问题?
预先感谢您。
解决的问题是因为 core-site.xml 中的Zookeeper配置。我在以下内容中解释了高可用的Hadoop配置的详细信息: HDFS-SITE.xml :
<property>
<name>dfs.nameservices</name>
<value>mycluster</value>
<description>Logical name for this new nameservice</description>
</property>
<property>
<name>dfs.ha.namenodes.mycluster</name>
<value>nn1,nn2</value>
<description>Unique identifiers for each NameNode in
the nameservice</description>
</property>
<property>
<name>dfs.namenode.rpc-address.mycluster.nn1</name>
<value>10.32.0.1:8020</value>
</property>
<property>
<name>dfs.namenode.rpc-address.mycluster.nn2</name>
<value>10.32.0.2:8020</value>
</property>
<property>
<name>dfs.namenode.http-address.mycluster.nn1</name>
<value>10.32.0.1:50070</value>
</property>
<property>
<name>dfs.namenode.http-address.mycluster.nn2</name>
<value>10.32.0.2:50070</value>
</property>
<property>
<name>dfs.client.failover.proxy.provider.mycluster</name>
<value>org.apache.hadoop.hdfs.
server.namenode.ha.ConfiguredFailoverProxyProvider</value>
</property>
<property>
<name>dfs.namenode.shared.edits.dir</name>
<value>
qjournal://10.32.0.1:8485;10.32.0.2:8485;10.32.0.3:8485/mycluster
</value>
</property>
<property>
<name>dfs.permissions.enable</name>
<value> false </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/hdfs/.ssh/id_rsa</value>
</property>
<property>
<name>dfs.ha.fencing.ssh.connect-timeout</name>
<value>30000</value>
</property>
<property>
<name>dfs.permissions.superusergroup</name>
<value>hdfs</value>
</property>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>file:///usr/local/hadoop_store/hdfs/namenode</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>file:///usr/local/hadoop_store/hdfs/datanode</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.ip-hostname-check</name>
<value>false</value>
</property>
<property>
<name>dfs.ha.automatic-failover.enabled</name>
<value>true</value>
</property>
core-site.xml (例如,在节点" 10.32.0.1"中(:
<property>
<name>fs.defaultFS</name>
<value>hdfs://mycluster</value>
</property>
<property>
<name>dfs.journalnode.edits.dir</name>
<value>/tmp/hadoop/dfs/journalnode</value>
</property>
<property>
<name>fs.default.name</name>
<value>hdfs://mycluster</value>
</property>
<property>
<name>ha.zookeeper.quorum</name>
<value>0.0.0.0:2181,10.32.0.2:2181,10.32.0.3:2181</value>
</property>
Zookeeper配置例如" 10.32.0.1" IS:
server.1=0.0.0.0:2888:3888
server.2=10.32.0.2:2888:3888
server.3=10.32.0.3:2888:3888
另外,我用该节点的ID制作了>/var/lib/zookeeper/data 中的 myid 文件。首先,删除所有Bellow文件夹:
rm -rf /tmp/hadoop/dfs/journalnode
rm -rf /usr/local/hadoop_store/hdfs/namenode
rm -rf /usr/local/hadoop_store/hdfs/datanode
rm -rf /opt/hadoop/logs/*
然后,制作这些文件夹:
mkdir /usr/local/hadoop_store/hdfs/namenode
mkdir /usr/local/hadoop_store/hdfs/datanode
之后,对这些文件夹进行了正确的权限:
chmod 777 /usr/local/hadoop_store/hdfs/namenode
chmod 777 /usr/local/hadoop_store/hdfs/datanode
chown -R root /usr/local/hadoop_store/hdfs/namenode
chown -R root /usr/local/hadoop_store/hdfs/datanode
chmod 777 /tmp/hadoop/dfs/journalnode
chown -R root /tmp/hadoop/dfs/journalnode
现在,您可以关注此阶段以格式化这些文件夹。最重要的是如何格式化这三个节点。您必须遵循以下阶段:1.停止HDFS服务2.仅启动日记帐节点(因为需要使它们意识到格式(
/opt/hadoop/bin/hdfs --daemon start journalnode
在第一个Namenode上(作为用户HDF或root(
hadoop namenode -format
在杂志上:
hdfs namenode -initializesharededits -force
重新启动Zookeeper:
/home/zookeeper-3.4.14/bin/zkserver.sh restart
格式Zookeeper:
hdfs zkfc -formatZK -force (to force zookeeper to reinitialise)
重新启动第一个名称:
/opt/hadoop/bin/hdfs --daemon start namenode
在第二个Namenode上:
hdfs namenode -bootstrapStandby -force (force synch with first namenode)
在每个数据台上清除数据目录:
hadoop datanode -format
重新启动HDFS服务:
/opt/hadoop/sbin/start-dfs.sh
顺便说一句,我有三个节点,两个Namenodes和一个数据台。您可以检查/opt/hadoop/logs/strong>。