Hadoop3.1.0完全分布式集群部署超详细记录

王小雷

发布于 2019-05-26 10:41:34

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发布于 2019-05-26 10:41:34

文章被收录于专栏：王小雷王小雷

Hadoop3.1.0完全分布式集群部署，三台服务器部署结构如下github配置文件源码地址

#部署完成后
root@servera:/opt/hadoop/hadoop-3.1.0# jps
14056 SecondaryNameNode
14633 Jps
13706 NameNode
14317 ResourceManager

root@serverb:~# jps
5288 NodeManager
5162 DataNode
5421 Jps


root@serverc:~# jps
4545 NodeManager
4371 DataNode
4678 Jps

如上图，一共三台机器作为集群，servera作为master，其他两台作为worker。

2.开始部署-前期准备(三台机器都需要进行如下操作)

2.1.配置hosts文件【三台】

vim /etc/hosts

10.80.80.110    servera
10.80.80.111    serverb
10.80.80.112    serverc

2.2.jdk 安装【三台】
- 下载jdk
wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u172-b11/a58eab1ec242421181065cdc37240b08/jdk-8u172-linux-x64.tar.gz
- 解压
mkdir /opt/java wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u172-b11/a58eab1ec242421181065cdc37240b08/jdk-8u172-linux-x64.tar.gz tar -zxf jdk-8u172-linux-x64.tar.gz mv jdk1.8.0_172/ /opt/java/
- 配置JAVA变量
vim /etc/profile.d/jdk-1.8.sh #!/bin/sh # Author:wangxiaolei 王小雷 # Blog: http://blog.csdn.net/dream_an # Github: https://github.com/wangxiaoleiai # web: www.xiaolei.wang # Date: 2018.05 # Path: /etc/profile.d/ export JAVA_HOME=/opt/java/jdk1.8.0_172 export JRE_HOME=${JAVA_HOME}/jre export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib export PATH=${JAVA_HOME}/bin:$PATH # 使环境变量生效 source /etc/profile # 查看 Java java --version

2.3.pdsh、ssh安装【三台】

root@servera:~# apt install ssh pdsh

echo ssh>/etc/pdsh/rcmd_default

2.4.免密码登录自身【三台】

$ ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa
$ cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
$ chmod 0600 ~/.ssh/authorized_keys
ssh localhost(首次需输入yes)

2.5.servera免密码登录其他机器（master免密码登录worker）【单台，只需在servera上执行】

ssh-copy-id -i ~/.ssh/id_rsa.pub servera
ssh-copy-id -i ~/.ssh/id_rsa.pub serverb
ssh-copy-id -i ~/.ssh/id_rsa.pub serverc

3.hadoop3+配置文件 github配置文件源码地址

共需要配置/opt/hadoop/hadoop-3.1.0/etc/hadoop/下的六个个文件，分别是

hadoop-env.sh、core-site.xml、hdfs-site.xml、yarn-site.xml、mapred-site.xml、workers

3.1. hadoop-env.sh 添加如下内容

export JAVA_HOME=/opt/java/jdk1.8.0_172/

export HDFS_NAMENODE_USER="root"
export HDFS_DATANODE_USER="root"
export HDFS_SECONDARYNAMENODE_USER="root"
export YARN_RESOURCEMANAGER_USER="root"
export YARN_NODEMANAGER_USER="root"

3.2. core-site.xml

<configuration>

  <!-- 指定hdfs的nameservice为ns1 -->
  <property>
      <name>fs.defaultFS</name>
      <value>hdfs://ruizhia:9000</value>
  </property>

  <property>
      <name>io.file.buffer.size</name>
      <value>131072</value>
  </property>

</configuration>

3.3. hdfs-site.xml

<configuration>


<!-- Configurations for NameNode: -->
<property>
  <name>dfs.namenode.name.dir</name>
  <value>/var/lib/hadoop/hdfs/name/</value>
</property>

<property>
  <name>dfs.blocksize</name>
  <value>268435456</value>
</property>

<property>
  <name>dfs.namenode.handler.count  </name>
  <value>100</value>
</property>

<!-- Configurations for DataNode: -->

<property>
  <name>dfs.datanode.data.dir</name>
  <value>/var/lib/hadoop/hdfs/data/</value>
</property>

<property>
    <name>dfs.replication</name>
    <value>1</value>
</property>


</configuration>

3.4. yarn-site.xml

<configuration>

<!-- Site specific YARN configuration properties -->

<!-- Configurations for ResourceManager and NodeManager: -->

<!-- Configurations for ResourceManager: -->
  <property>
          <name>yarn.resourcemanager.hostname</name>
          <value>servera</value>
  </property>
  <!-- 配置外网只需要替换外网ip为真实ip，否则默认为 localhost:8088 -->
  <!-- <property>
          <name>yarn.resourcemanager.webapp.address</name>
          <value>外网ip:8088</value>
  </property> -->
<!-- Configurations for NodeManager: -->
  <property>
          <name>yarn.nodemanager.aux-services</name>
          <value>mapreduce_shuffle</value>
  </property>
<!-- Configurations for History Server (Needs to be moved elsewhere): -->
</configuration>

3.5. mapred-site.xml

<configuration>
  <!-- Configurations for MapReduce Applications: -->
  <property>
       <name>mapreduce.framework.name</name>
       <value>yarn</value>
   </property>
</configuration>

3.6. workers

serverb
serverc

4. 复制Hadoop文件到其他集群、配置Hadoop环境变量、格式化hdfs、开启集群、查看、关闭、重置集群

4.1. 将步骤3配置好的hadoop文件复制到其他同样位置的机器上 /opt/hadoop/hadoop-3.1.0
4.2 配置Hadoop环境变量【三台机器都操作】

vim /etc/profile.d/hadoop-3.1.0.sh

#!/bin/sh
# Author:wangxiaolei 王小雷
# Blog: http://blog.csdn.net/dream_an
# Github: https://github.com/wangxiaoleiai
# Date: 201805
# web: www.xiaolei.wang
# Path: /etc/profile.d/

export HADOOP_HOME="/opt/hadoop/hadoop-3.1.0"
export PATH="$HADOOP_HOME/bin:$PATH"
export HADOOP_CONF_DIR=$HADOOP_HOME/etc/hadoop
export YARN_CONF_DIR=$HADOOP_HOME/etc/hadoop

source /etc/profile

4.3. 格式化HDFS [只有首次部署才可使用]【谨慎操作，只在servera上操作】

/opt/hadoop/hadoop-3.1.0/bin/hdfs namenode -format myClusterName

4.4. 开启【只在servera上操作】

/opt/hadoop/hadoop-3.1.0/sbin/start-dfs.sh
/opt/hadoop/hadoop-3.1.0/sbin/start-yarn.sh

4.5. 查看【三台】

jps

4.6. web端localhost:8088查看【localhost只定servera的localhost，也可以换成外网ip，在详见步骤3.4. yarn-site.xml 】

4.7. 关闭【只在servera上操作】

/opt/hadoop/hadoop-3.1.0/sbin/stop-dfs.sh
/opt/hadoop/hadoop-3.1.0/sbin/stop-yarn.sh

4.8. 重置hadoop环境 [移除hadoop hdfs log文件] 【谨慎操作，只在servera上操作】

rm -rf /opt/hadoop/hadoop-3.1.0/logs/*
rm -rf /var/lib/hadoop/

5.遇到的坑 pdsh@servera: servera: connect: Connection refused

root@servera:/opt/hadoop/hadoop-3.1.0# sbin/start-dfs.sh Starting namenodes on [servera] pdsh@servera: servera: connect: Connection refused Starting datanodes pdsh@servera: serverc: connect: Connection refused pdsh@servera: serverb: connect: Connection refused Starting secondary namenodes [servera] pdsh@servera: servera: connect: Connection refused