Hadoop2.7.7安装配置

hadoop2.8.5 NameNode高可用HA配置

• /etc/hosts 配置

192.168.56.100   master
192.168.56.101   node1
192.168.56.102   node2
192.168.56.103   node3
192.168.56.104   node4

• etc/hadoop/slaves配置

node1
node2
node3
node4

• etc/hadoop/hadoop-env.sh配置

export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk

• etc/hadoop/core-site.xml配置

    
        dfs.nameservices
        mycluster
    
    
        dfs.ha.namenodes.mycluster
        nn1,nn2
    
    
        dfs.namenode.rpc-address.mycluster.nn1
        master:9000
    
    
        dfs.namenode.rpc-address.mycluster.nn2
        node1:9000
    
    
        dfs.namenode.http-address.mycluster.nn1
        master:50070
    
    
        dfs.namenode.http-address.mycluster.nn2
        node1:50070
    
    
        dfs.namenode.shared.edits.dir
        qjournal://master:8485;node1:8485;node2:8485;node3:8485;node4:8485/mycluster
    
    
        dfs.client.failover.proxy.provider.mycluster
        org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider
    
    
        dfs.ha.fencing.ssh.private-key-files
        /root/.ssh/id_rsa
    
    
        dfs.ha.fencing.methods
        sshfence
        shell(/bin/true)
        
    
    
        dfs.ha.fencing.ssh.connect-timeout
        30000
    
    
        dfs.journalnode.edits.dir
        /usr/local/lib/hadoop-2.7.7/journal/node/local/data
    
    
        dfs.ha.automatic-failover.enabled
        true
    

hadoop2.7.7 hdfs启动

• 启动 zookeeper
• 启动 journalnode

#所有机器上操作
sbin/hadoop-daemons.sh start journalnode

• 格式化 namenode 并启动

#master主机器上操作
hdfs namenode -format
bin/hdfs zkfc -formatZK
sbin/start-dfs.sh

• 备用节点启动

#node1机器上操作
hdfs namenode -bootstrapStandby
sbin/hadoop-daemon.sh start namenode

• 切换namenode

hadoop-2.7.7/bin/hdfs haadmin -help

hadoop3.2.1 hdfs高可用HA配置官方参考文档

hadoop2.7.7 yarn 高可用HA配置

• etc/hadoop/yarn-site.xml配置

    
        yarn.resourcemanager.ha.enabled
        true
    
    
        yarn.resourcemanager.cluster-id
        cluster1
    
    
        yarn.resourcemanager.ha.rm-ids
        rm1,rm2
    
    
        yarn.resourcemanager.hostname.rm1
        master
    
    
        yarn.resourcemanager.hostname.rm2
        node1
    
    
        yarn.resourcemanager.webapp.address.rm1
        master:8088
    
    
        yarn.resourcemanager.webapp.address.rm2
        node1:8088
    
    
        yarn.resourcemanager.zk-address
        master:2181,node1:2181,node2:2181,node3:2181,node4:2181
    

yarn相关命令

• 启动yarn

#master中启动
sbin/start-yarn.sh

• 查看 active standby状态

bin/yarn rmadmin -getServiceState rm1
#active 
bin/yarn rmadmin -getServiceState rm2
#standby

• 切换active standby状态

bin/yarn rmadmin -transitionToStandby rm1
bin/yarn rmadmin -transitionToActive rm2 --forcemanual

hadoop3.2.1 yarn HA高可用配置 官方参考文档