centos6.8下hadoop3.1.1完全分布式安装指南(推荐)

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前述：

这篇文档是建立在三台虚拟机相互ping通，防火墙关闭，hosts文件修改，SSH 免密码登录，主机名修改等的基础上开始的。

一．传入文件

1.创建安装目录

mkdir /usr/local/soft

2.打开xftp，找到对应目录，将所需安装包传入进去

查看安装包：cd /usr/local/soft

二．安装JAVA

1.查看是否已安装jdk： java -version

2.未安装，解压java安装包： tar -zxvf jdk-8u181-linux-x64.tar.gz

（每个人安装包可能不一样，自己参考）

3.给jdk重命名，并查看当前位置：mv jdk1.8.0_181 java

4.配置jdk环境：vim /etc/profile.d/jdk.sh

export JAVA_HOME=/usr/local/soft/java
export PATH=$PATH:$JAVA_HOME/bin
export CLASSPATH=.:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/rt.jar

5.更新环境变量并检验：source /etc/profile

三．安装Hadoop

1.解压hadoop安装包：tar -zxvf hadoop-3.1.1.tar.gz

2.查看并重命名：mv hadoop-3.1.1 hadoop

3.配置 hadoop 配置文件

3.1修改 core-site.xml 配置文件：vim hadoop/etc/hadoop/core-site.xml

<property>

<name>fs.defaultFS</name>

<value>hdfs://master:9000</value>

</property>

<property>

<name>hadoop.tmp.dir</name>

<value>file:/usr/local/soft/hadoop/tmp</value>

<description>Abase for other temporary directories.</description>

</property>

<property>

 <name>fs.trash.interval</name>

 <value>1440</value>

</property>

3.2修改 hdfs-site.xml 配置文件：vim hadoop/etc/hadoop/hdfs-site.xml

<property>
<name>dfs.namenode.secondary.http-address</name>
<value>node1:50090</value>
</property>
<property>
<name>dfs.replication</name>
<value>3</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>file:/usr/local/soft/hadoop/tmp/dfs/name</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>file:/usr/local/soft/hadoop/tmp/dfs/data</value>
</property>

3.3修改 workers 配置文件：vim hadoop/etc/hadoop/workers

3.4修改hadoop-env.sh文件：vim hadoop/etc/hadoop/hadoop-env.sh

export JAVA_HOME=/usr/local/soft/java

3.5修改yarn-site.xml文件：vim hadoop/etc/hadoop/yarn-site.xml

<property>
<name>yarn.resourcemanager.hostname</name>
<value>master</value>
</property>
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>

3.6更新配置文件：source hadoop/etc/hadoop/hadoop-env.sh

3.7修改 start-dfs.sh配置文件: im hadoop/sbin/start-dfs.sh

export HDFS_NAMENODE_SECURE_USER=root
export HDFS_DATANODE_SECURE_USER=root
export HDFS_SECONDARYNAMENODE_USER=root
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

3.8修改 stop-dfs.sh配置文件: vim hadoop/sbin/stop-dfs.sh

export HDFS_NAMENODE_SECURE_USER=root
export HDFS_DATANODE_SECURE_USER=root
export HDFS_SECONDARYNAMENODE_USER=root
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

3.9修改 start-yarn.sh配置文件：vim hadoop/sbin/start-yarn.sh

export YARN_RESOURCEMANAGER_USER=root
export HADOOP_SECURE_DN_USER=root
export YARN_NODEMANAGER_USER=root

3.10修改 stop-yarn.sh配置文件：vim hadoop/sbin/stop-yarn.sh

export YARN_RESOURCEMANAGER_USER=root
export HADOOP_SECURE_DN_USER=root
export YARN_NODEMANAGER_USER=root

3.11 取消打印警告信息：vim hadoop/etc/hadoop/log4j.properties

log4j.logger.org.apache.hadoop.util.NativeCodeLoader=ERROR

四．同步配置信息：

1.同步node1：scp -r soft root@node1:/usr/local/

同步node2：scp -r soft root@node2:/usr/local/

2.等待所有传输完成，配置profile文件：vim /etc/profile.d/hadoop.sh

#SET HADOOP
export HADOOP_HOME=/usr/local/soft/hadoop
export HADOOP_INSTALL=$HADOOP_HOME
export HADOOP_MAPRED_HOME=$HADOOP_HOME
export HADOOP_COMMON_HOME=$HADOOP_HOME
export HADOOP_HDFS_HOME=$HADOOP_HOME
export YARN_HOME=$HADOOP_HOME
export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_HOME/lib/native
export PATH=$PATH:$HADOOP_HOME/sbin:$HADOOP_HOME/bin
export PATH=$PATH:$HADOOP_HOME/sbin:$HADOOP_HOME/bin

3.继续传输

对node1: scp /etc/profile.d/jdk.sh root@node1:/etc/profile.d/

scp /etc/profile.d/hadoop.sh root@node1:/etc/profile.d/