CentOS7 Hadoop-2.7.4 分布式部署

下载Hadoop

wget http://mirror.bit.edu.cn/apache/hadoop/common/hadoop-2.7.4/hadoop-2.7.4.tar.gz

官方地址：http://mirror.bit.edu.cn/apache/hadoop/common/

如果wget不存在，使用如下命令安装

yum install -y wget

系统配置

host（别名不能出现.号）

192.168.1.211 hd211192.168.1.212 hd212192.168.1.214 hd214

免密码登录

cd /root/.ssh/ssh-keygen -t rsa

一路回车

同步到其它服务器

ssh-copy-id hd211ssh-copy-id hd212ssh-copy-id hd214

安装、配置Hadoop

解压安装包

tar -zxvf hadoop-2.7.4.tar.gz

进入Hadoop配置文件目录

cd hadoop-2.7.4/

编辑hadoop-env.sh

vi etc/hadoop/hadoop-env.sh

export JAVA_HOME=/usr/lib/jvm/jre

export HADOOP_LOG_DIR=/data/hadoop/logs

编辑yarn-env.sh

vi etc/hadoop/yarn-env.sh

YARN_LOG_DIR="/data/hadoop/logs"

编辑core-site.xml

vi etc/hadoop/core-site.xml

内容

<configuration>  <property>    <name>fs.defaultFS</name>    <value>hdfs://hd212:9000</value>  </property>  <property>    <name>io.file.buffer.size</name>    <value>131072</value>  </property>  <property>    <name>hadoop.tmp.dir</name>    <value>file:/data/hadoop/tmp</value>    <description>Abase for other temporary   directories.</description>  </property></configuration>

编辑hdfs-site.xml

vi etc/hadoop/hdfs-site.xml

内容

<configuration>  <property>    <name>dfs.permissions.enabled</name>    <value>false</value>  </property>  <property>    <name>dfs.webhdfs.enabled</name>    <value>true</value>  </property>  <property>    <name>dfs.blocksize</name>    <value>64m</value>  </property>  <property>    <name>dfs.nameservices</name>    <value>hadoop-cluster-zgw</value>  </property>  <!-- 上传文件时rep系数由client决定 -->  <property>    <name>dfs.replication</name>    <value>3</value>  </property>  <property>    <name>dfs.namenode.name.dir</name>    <value>/data/hadoop/hdfs/name</value>  </property>  <property>    <name>dfs.namenode.checkpoint.dir</name>    <value>/data/hadoop/hdfs/checkpoint</value>  </property>  <property>    <name>dfs.namenode.checkpoint.edits.dir</name>    <value>/data/hadoop/hdfs/checkpoint</value>  </property>  <property>    <name>dfs.datanode.data.dir</name>    <value>/data/hadoop/hdfs/data</value>  </property>  <property>    <name>dfs.namenode.secondary.http-address</name>    <value>hd211:50090</value>  </property></configuration>

编辑mapred-site.xml

cp etc/hadoop/mapred-site.xml.template etc/hadoop/mapred-site.xmlvi etc/hadoop/mapred-site.xml

内容

<configuration>  <property>    <name>mapreduce.framework.name</name>    <value>yarn</value>  </property>  <property>    <name>mapreduce.jobhistory.address</name>    <value>hd212:10020</value>  </property>  <property>    <name>mapreduce.jobhistory.webapp.address</name>    <value>hd212:19888</value>  </property></configuration>

编辑yarn-site.xml

vi etc/hadoop/yarn-site.xml

内容

<configuration>  <property>    <name>yarn.nodemanager.aux-services</name>    <value>mapreduce_shuffle</value>  </property>  <property>    <name>yarn.nodemanager.aux-services.mapreduce.shuffle.class</name>    <value>org.apache.hadoop.mapred.ShuffleHandler</value>  </property>  <property>    <name>yarn.nodemanager.local-dirs</name>    <value>/data/hadoop/yarn/nodemanager</value>  </property>  <property>    <name>yarn.resourcemanager.hostname</name>    <value>hd212</value>  </property>  <property>    <name>yarn.resourcemanager.address</name>    <value>hd212:8032</value>  </property>  <property>    <name>yarn.resourcemanager.scheduler.address</name>    <value>hd212:8030</value>  </property>  <property>    <name>yarn.resourcemanager.resource-tracker.address</name>    <value>hd212:8031</value>  </property>  <property>    <name>yarn.resourcemanager.admin.address</name>    <value>hd212:8033</value>  </property>  <property>    <name>yarn.resourcemanager.webapp.address</name>    <value>hd212:8034</value>  </property></configuration>

编辑slaves

vi etc/hadoop/slaves

内容

hd211hd212hd214

环境变量

vi /etc/profile

#jdkexport JAVA_HOME=/usr/lib/jvm/jreexport PATH=$PATH:$JAVA_HOME/bin #hadoop  export HADOOP_HOME=/usr/hadoop/hadoop-2.7.4  export PATH=$PATH:$HADOOP_HOME/sbin  export PATH=$PATH:$HADOOP_HOME/bin 

source /etc/profile

创建目录

mkdir /data/hadoopmkdir /data/hadoop/hdfsmkdir /data/hadoop/hdfs/datamkdir /data/hadoop/hdfs/checkpointmkdir /data/hadoop/hdfs/namemkdir /data/hadoop/yarnmkdir /data/hadoop/yarn/nodemanagermkdir /data/hadoop/tmp

防火墙配置

firewall-cmd --permanent --add-port=9000/tcpfirewall-cmd --permanent --add-port=50070/tcpfirewall-cmd --permanent --add-port=50090/tcpfirewall-cmd --permanent --add-port=10020/tcpfirewall-cmd --permanent --add-port=19888/tcpfirewall-cmd --permanent --add-port=8030/tcpfirewall-cmd --permanent --add-port=8031/tcpfirewall-cmd --permanent --add-port=8032/tcpfirewall-cmd --permanent --add-port=8033/tcpfirewall-cmd --permanent --add-port=8088/tcpfirewall-cmd --reload

格式华HDFS文件系统

hdfs namenode –format

启动hadoop

start-all.sh

浏览器访问

hd212:50070

其他

1.管理界面只能看到一个DataNode

2.SHUTDOWN_MSG: Shutting down NameNode at localhost/127.0.0.1
注意 -format 是否为中文符号

详细配置参考链接