环境
linux Centos6.8
jdk1.8
zookeeper集群环境
角色预设
NN-1
NN-2
DN
ZK
ZKFC
JNN
RS
NM
node01
*
*
*
node02
*
*
*
*
*
*
node03
*
*
*
*
*
node04
*
*
*
*
hdfs配置
1、hdfs-site.xml
<property> <name>dfs.replication</name> <value>2</value> </property> <property> <name>dfs.nameservices</name> <value>mycluster</value> </property> <property> <name>dfs.ha.namenodes.mycluster</name> <value>nn1,nn2</value> </property> <property> <name>dfs.namenode.rpc-address.mycluster.nn1</name> <value>node1:8020</value> </property> <property> <name>dfs.namenode.rpc-address.mycluster.nn2</name> <value>node2:8020</value> </property> <property> <name>dfs.namenode.http-address.mycluster.nn1</name> <value>node1:50070</value> </property> <property> <name>dfs.namenode.http-address.mycluster.nn2</name> <value>node2:50070</value> </property> <property> <name>dfs.namenode.shared.edits.dir</name> <value>qjournal://node1:8485;node2:8485;node3:8485/mycluster</value> </property> <property> <name>dfs.journalnode.edits.dir</name> <value>/var/hadoop/ha/jn</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>sshfence</value> </property> <property> <name>dfs.ha.fencing.ssh.private-key-files</name> <value>/root/.ssh/id_rsa</value> </property> <property> <name>dfs.ha.automatic-failover.enabled</name> <value>true</value> </property>
2、core-site.xml
<property> <name>fs.defaultFS</name> <value>hdfs://mycluster</value> </property> <property> <name>ha.zookeeper.quorum</name> <value>node2:2181,node3:2181,node4:2181</value> </property> <property> <name>hadoop.tmp.dir</name> <value>/var/hadoop/fully</value> </property>
3、将环境执行文件中的JAVA_HOME均改为本地jdk的绝对路径:hadoop-env.sh mapred-env.sh yarn-env.sh
4、所有的datanode节点的slaves文件中添加:
node2
node3
node4
第一次启动
1、先启动三个JNN
hadoop-daemon.sh start journalnode
2、第一台NameNode
hdfs namenode -format hadoop-daemon.sh start namenode
3、另一台NameNode
hdfs namenode -bootstrapStandby
4、第一台NameNode
start-dfs.sh hdfs zkfc -formatZK
5、另一台NameNode
hdfs zkfc -formatZK
6、第一台NameNode
stop-dfs.sh && start-dfs.sh || hadoop-daemon.sh start zkfc
第一次启动完成
第二次启动
1,启动zk
2,start-dfs.sh
Map-Reduse-On-Yarn配置
1、mapred-site.xml
<property> <name>mapreduce.framework.name</name> <value>yarn</value> </property>
2、yarn-site.xml
<property> <name>yarn.nodemanager.aux-services</name> <value>mapreduce_shuffle</value> </property> <property> <name>yarn.resourcemanager.ha.enabled</name> <value>true</value> </property> <property> <name>yarn.resourcemanager.cluster-id</name> <value>cluster1</value> </property> <property> <name>yarn.resourcemanager.ha.rm-ids</name> <value>rm1,rm2</value> </property> <property> <name>yarn.resourcemanager.hostname.rm1</name> <value>node3</value> </property> <property> <name>yarn.resourcemanager.hostname.rm2</name> <value>node4</value> </property> <property> <name>yarn.resourcemanager.zk-address</name> <value>node2:2181,node3:2181,node4:2181</value> </property>
3、启用Yarn
start-yarn.sh
yarn-daemon.sh start resourcemanager
Linux 执行jar : hadoop jar WordCount.jar com.self.study.wordcount.WordCount