用三台虚拟机搭建Hadoop全分布集群
用三台虚拟机搭建hadoop全分布集群
所有的软件都装在/home/software下
虚拟机系统:centos6.5
jdk版本:1.8.0_181
zookeeper版本:3.4.7
hadoop版本:2.7.1
1.安装jdk
准备好免安装压缩包放在/home/software下
cd /home/software tar -xvf jdk-8u181-linux-x64.tar.gz
配置环境变量
vim /etc/profile
末尾添加
export java_home=/home/software/jdk1.8.0_181 export classpath=$:classpath:$java_home/lib/ export path=$path:$java_home/bin
source /etc/profile
检查是否配置成功,查看jdk版本
java –version
2.关闭防火墙
service iptables stop chkconfig iptables off
3.配置主机名
vim /etc/sysconfig/network
hostname=qyws
三个节点主机名分别设置为qyws,qyws2,qyws3
source /etc/sysconfig/network
4.改hosts文件
vim /etc/hosts
192.168.38.133 qyws 192.168.38.134 qyws2 192.168.38.135 qyws3
5.重启
reboot
6.配置免密登陆
ssh-keygen ssh-copy-id root@qyws ssh-copy-id root@qyws2 ssh-copy-id root@qyws3
7.解压zookeeper压缩包
tar –xf zookeeper-3.4.7.tar.gz
8.搭建zookeeper集群
cd /home/software/zookeeper-3.4.7/conf cp zoo_sample.cfg zoo.cfg vim zoo.cfg
14 行
datadir=/home/software/zookeeper-3.4.7/tmp
末尾追加
server.1=192.168.38.133:2888:3888 server.2=192.168.38.134:2888:3888 server.3=192.168.38.135:2888:3888
9.将配置好的zookeeper拷贝到另两个节点
scp -r zookeeper-3.4.7 root@qyws2:/home/software/ scp -r zookeeper-3.4.7 root@qyws3:/home/software/
10.进入zookeeper目录下创建tmp目录,新建myid文件
cd /home/software/zookeeper-3.4.7 mkdir tmp cd tmp vim myid
三个节点myid分别设置为1,2,3
11.解压hadoop压缩包
tar -xvf hadoop-2.7.1_64bit.tar.gz
12.编辑hadoop-env.sh
cd /home/software/hadoop-2.7.1/etc/hadoop vim hadoop-env.sh
25行
export java_home=/home/software/jdk1.8.0_181
33行
export hadoop_conf_dir=/home/software/hadoop-2.7.1/etc/hadoop
source hadoop-env.sh
13.编辑core-site.xml
<!--指定hdfs的nameservice,为整个集群起一个别名--> <property> <name>fs.defaultfs</name> <value>hdfs://ns</value> </property> <!--指定hadoop数据临时存放目录--> <property> <name>hadoop.tmp.dir</name> <value>/home/software/hadoop-2.7.1/tmp</value> </property> <!--指定zookeeper的存放地址--> <property> <name>ha.zookeeper.quorum</name> <value>qyws:2181,qyws2:2181,qyws3:2181</value> </property>
14.编辑hdfs-site.xml
<!--执行hdfs的nameservice为ns,注意要和core-site.xml中的名称保持一致--> <property> <name>dfs.nameservices</name> <value>ns</value> </property> <!--ns集群下有两个namenode,分别为nn1, nn2--> <property> <name>dfs.ha.namenodes.ns</name> <value>nn1,nn2</value> </property> <!--nn1的rpc通信--> <property> <name>dfs.namenode.rpc-address.ns.nn1</name> <value>qyws:9000</value> </property> <!--nn1的http通信--> <property> <name>dfs.namenode.http-address.ns.nn1</name> <value>qyws:50070</value> </property> <!-- nn2的rpc通信地址 --> <property> <name>dfs.namenode.rpc-address.ns.nn2</name> <value>qyws2:9000</value> </property> <!-- nn2的http通信地址 --> <property> <name>dfs.namenode.http-address.ns.nn2</name> <value>qyws2:50070</value> </property> <!--指定namenode的元数据在journalnode上存放的位置,这样,namenode2可以从journalnode集群里的指定位置上获取信息,达到热备效果--> <property> <name>dfs.namenode.shared.edits.dir</name> <value>qjournal://qyws:8485;qyws2:8485;qyws3:8485/ns</value> </property> <!-- 指定journalnode在本地磁盘存放数据的位置 --> <property> <name>dfs.journalnode.edits.dir</name> <value>/home/software/hadoop-2.7.1/tmp/journal</value> </property> <!-- 开启namenode故障时自动切换 --> <property> <name>dfs.ha.automatic-failover.enabled</name> <value>true</value> </property> <!-- 配置失败自动切换实现方式 --> <property> <name>dfs.client.failover.proxy.provider.ns</name> <value>org.apache.hadoop.hdfs.server.namenode.ha.configuredfailoverproxyprovider</value> </property> <!-- 配置隔离机制 --> <property> <name>dfs.ha.fencing.methods</name> <value>sshfence</value> </property> <!-- 使用隔离机制时需要ssh免登陆 --> <property> <name>dfs.ha.fencing.ssh.private-key-files</name> <value>/root/.ssh/id_rsa</value> </property> <!--配置namenode存放元数据的目录,可以不配置,如果不配置则默认放到hadoop.tmp.dir下--> <property> <name>dfs.namenode.name.dir</name> <value>file:///home/software/hadoop-2.7.1/tmp/hdfs/name</value> </property> <!--配置datanode存放元数据的目录,可以不配置,如果不配置则默认放到hadoop.tmp.dir下--> <property> <name>dfs.datanode.data.dir</name> <value>file:///home/software/hadoop-2.7.1/tmp/hdfs/data</value> </property> <!--配置复本数量--> <property> <name>dfs.replication</name> <value>3</value> </property> <!--设置用户的操作权限,false表示关闭权限验证,任何用户都可以操作--> <property> <name>dfs.permissions</name> <value>false</value> </property>
15.编辑mapred-site.xml
cp mapred-site.xml.template mapred-site.xml vim mapred-site.xml
<property> <name>mapreduce.framework.name</name> <value>yarn</value> </property>
16.编辑yarn-site.xml
<!--配置yarn的高可用--> <property> <name>yarn.resourcemanager.ha.enabled</name> <value>true</value> </property> <!--指定两个resourcemaneger的名称--> <property> <name>yarn.resourcemanager.ha.rm-ids</name> <value>rm1,rm2</value> </property> <!--配置rm1的主机--> <property> <name>yarn.resourcemanager.hostname.rm1</name> <value>qyws</value> </property> <!--配置rm2的主机--> <property> <name>yarn.resourcemanager.hostname.rm2</name> <value>qyws3</value> </property> <!--开启yarn恢复机制--> <property> <name>yarn.resourcemanager.recovery.enabled</name> <value>true</value> </property> <!--执行rm恢复机制实现类--> <property> <name>yarn.resourcemanager.store.class</name> <value>org.apache.hadoop.yarn.server.resourcemanager.recovery.zkrmstatestore</value> </property> <!--配置zookeeper的地址--> <property> <name>yarn.resourcemanager.zk-address</name> <value>qyws:2181,qyws2:2181,qyws3:2181</value> </property> <!--执行yarn集群的别名--> <property> <name>yarn.resourcemanager.cluster-id</name> <value>ns-yarn</value> </property> <!-- 指定nodemanager启动时加载server的方式为shuffle server --> <property> <name>yarn.nodemanager.aux-services</name> <value>mapreduce_shuffle</value> </property> <!-- 指定resourcemanager地址 --> <property> <name>yarn.resourcemanager.hostname</name> <value>qyws3</value> </property>
17.编辑slaves
vim /home/software/hadoop-2.7.1/etc/hadoop/slaves
qyws qyws2 qyws3
18.把配置好的hadoop拷贝到其他节点
scp -r hadoop-2.7.1 root@qyws2:/home/software/ scp -r hadoop-2.7.1 root@qyws3:/home/software/
19.配置环境变量
vim /etc/profile
末尾添加
export hadoop_home=/home/software/hadoop-2.7.1 export path=$path:$hadoop_home/bin:$hadoop_home/sbin
source /etc/profile
20.三个节点启动zookeeper
cd /home/software/zookeeper-3.4.7/bin sh zkserver.sh start
查看zookeeper状态
sh zkserver.sh status
21.格式化zookeeper(在第一个节点操作即可):
hdfs zkfc -formatzk
22.在每个节点启动journalnode:
hadoop-daemon.sh start journalnode
23.在第一个节点上格式化namenode:
hadoop namenode -format
24.在第一个节点上启动namenode:
hadoop-daemon.sh start namenode
25.在第二个节点上格式化namenode:
hdfs namenode -bootstrapstandby
26.在第二个节点上启动namenode:
hadoop-daemon.sh start namenode
27.在三个节点上启动datanode:
hadoop-daemon.sh start datanode
28.在第一个节点和第二个节点上启动zkfc(failovercontroller):
hadoop-daemon.sh start zkfc
29.在第一个节点上启动yarn:
start-yarn.sh
30.在第三个节点上启动resourcemanager:
yarn-daemon.sh start resourcemanager
31.查看运行的服务
32.查看第一个节点namenode
浏览器输入
查看第二个节点namenode(主备)
浏览器输入
33.访问管理页面
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