hadoop2 安装
下载
https://archive.apache.org/dist/hadoop/common/hadoop-2.7.2/
jdk 安装
https://blog.csdn.net/zhwyj1019/article/details/81103531
设置 新的用户
useradd hadoop
passwd hadoop
vim /etc/sudoers
设置 hostname 和 host
https://www.cnblogs.com/MWCloud/p/11346867.html
改变文件所属用户
sudo chown hadoop /sss
vim /etc/profile
JAVA_HOME=/opt/soft/jdk1.8.0_121 HADOOP_HOME=/opt/module/hadoop-2.7.2 PATH=$PATH:$JAVA_HOME/bin:$HADOOP_HOME/bin:$HADOOP_HOME/sbin export JAVA_HOME PATH HADOOP_HOME
source /etc/profile
hadoop101 hadoop102 hadoop103
DN DN DN
NM NM NM
NN RM 2NN
配置 core-site.xml
<!-- 指定HDFS中NameNode的地址 --> <property> <name>fs.defaultFS</name> <value>hdfs://hadoop101:9000</value> </property> <!-- 指定Hadoop运行时产生文件的存储目录 --> <property> <name>hadoop.tmp.dir</name> <value>/opt/module/hadoop-2.7.2/data/tmp</value> </property>
配置 hdfs-site.xml
<!-- 指定Hadoop辅助名称节点主机配置 -->
<property>
<name>dfs.namenode.secondary.http-address</name>
<value>hadoop103:50090</value>
</property>
配置 yarn-site.xml
<!-- reducer获取数据的方式 --> <property> <name>yarn.nodemanager.aux-services</name> <value>mapreduce_shuffle</value> </property> <!-- 指定YARN的ResourceManager的地址 --> <property> <name>yarn.resourcemanager.hostname</name> <value>hadoop103</value> </property>
cp mapred-site.xml.template mapred-site.xml
<property> <name>mapreduce.framework.name</name> <value>yarn</value> </property>
在hadoop101 运行
hadoop namenode -format
显示 Storage directory /opt/module/hadoop-2.7.2/data/tmp/dfs/name has been successfully formatted.
在 hadoop101 上 运行 hadoop-daemon.sh start namenode
jps 查看
在 hadoop101 ,hadoop102, hadoop103 上 都运行
hadoop-daemon.sh start datanode
在 hadoop103 上 运行
hadoop-daemon.sh start secondarynamenode
在 hadoop102 上启动
yarn-daemon.sh start resourcemanager
在 hadoop101 ,hadoop102, hadoop103 上 都运行
yarn-daemon.sh start nodemanager
停止 hadoop-daemon.sh stop datanode
访问
http://hadoop101:50070/
http://hadoop102:8088/
测试 hadoop fs -mkdir /angdh_input
hadoop fs -put hi /angdh_input/
测试
cd 到
/opt/module/hadoop-2.7.2/share/hadoop/mapreduce
hadoop jar hadoop-mapreduce-examples-2.7.2.jar wordcount /angdh_input /angdh_output