zookpeer: ha配置

梦里梦外; 2022-05-17 06:20 155阅读 0赞

要点如下：

1.  zookeeper集群搭建
2.  hdfs高可用（hdfs + zookeeper:  zk管理namenode, 实现failover机制 )
3.  修改start-dfs.sh :  使得zk集群---- 先于 ---hdfs启动

--------------------

# hdfs集群“热备份”（zk + hdfs =ha) #

![70][]

# ha具体配置文件 #

### /etc/hosts ###

192.168.56.111  s101
    192.168.56.112  s102
    192.168.56.113  slave1
    192.168.56.114  slave2
    192.168.56.115  slave3
    192.168.56.116  zk1
    192.168.56.117  zk2
    192.168.56.118  zk3

### core-site.xml ###

<configuration>
    <property>
    <name>fs.defaultFS</name>
    <value>hdfs://mycluster</value>
    </property> 
    
     
    <property> 
    <name>hadoop.tmp.dir</name> 
    <value>/home/wang/ha</value> 
    </property> 
    
     
    <property> 
    <name>ha.zookeeper.quorum</name> 
    <value>zk1:2181,zk2:2181,zk3:2181</value> 
    </property>
    </configuration>

### hdfs-site.xml ###

<configuration> 
    
        <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>s101:9000</value>
        </property> 
    
    
        <property>
            <name>dfs.namenode.http-address.mycluster.nn1</name>
            <value>s101:50070</value>
        </property> 
    
    
        <property>
            <name>dfs.namenode.rpc-address.mycluster.nn2</name>
            <value>s102:9000</value>
        </property> 
    
    
        <property>
            <name>dfs.namenode.http-address.mycluster.nn2</name>
            <value>s102:50070</value>
        </property> 
    
    
        <property>
            <name>dfs.namenode.shared.edits.dir</name>
            <value>qjournal://slave1:8485;slave2:8485;slave3:8485/mycluster</value>
        </property> 
    
    
        <property>
            <name>dfs.journalnode.edits.dir</name>
            <value>/home/wang/ha/qjournal</value>
        </property>
    
     
        <property>
            <name>dfs.ha.automatic-failover.enabled</name>
            <value>true</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
    		 shell(/bin/true)
    	</value>
        </property> 
    
    
        <property>
            <name>dfs.ha.fencing.ssh.private-key-files</name>
            <value>/home/wang/.ssh/id_rsa</value>
        </property>
    
     
        <property>
            <name>dfs.ha.fencing.ssh.connect-timeout</name>
            <value>30000</value>
        </property>
    </configuration>

### mapred-site.xml  ###

<configuration>
    
    <property>
    <name>mapreduce.framework.name</name>
    <value>yarn</value>
    </property>
    </configuration>

### yarn-site.xml  ###

<configuration> 
     
        <property>
            <name>yarn.resourcemanager.ha.enabled</name>
            <value>true</value>
        </property> 
    
    
        <property>
            <name>yarn.resourcemanager.cluster-id</name>
            <value>yarn-cluster</value>
        </property> 
    
    
        <property>
            <name>yarn.resourcemanager.ha.rm-ids</name>
            <value>rm1,rm2</value>
        </property> 
    
    
        <property>
            <name>yarn.resourcemanager.hostname.rm1</name>
            <value>s101</value>
        </property>
        <property>
            <name>yarn.resourcemanager.hostname.rm2</name>
            <value>s102</value>
        </property> 
    
    
        <property>
            <name>yarn.resourcemanager.zk-address</name>
            <value>zk1:2181,zk2:2181,zk3:2181</value>
        </property>
        <property>
            <name>yarn.nodemanager.aux-services</name>
            <value>mapreduce_shuffle</value>
        </property>
    </configuration>

[70]: /images/20220517/23c4908d72644bed9af77f386e73e760.png