hadoop安装（二、hadoop）（备忘）

hadoop安装

安装hadoop

紧接上文，解压过的hadoop內部文件为

再进入etc内部的hadoop

修改hadoop313的权限
在/opt目录下，将hadoop目录下的所有权限更改

chown -R root:root ./hadoop313/

更改文件配置

在此路径下操作

在此目录下新建一个文件夹data,作为namenode上本地的hadoop临时文件夹

配置core-site.xml

vim ./core-site.xml

19 <configuration>
 20   <property>
 21     <name>fs.defaultFS</name>
 22     <value>hdfs://cp145:9000</value>
 23   </property>
 24   <property>
 25     <name>hadoop.tmp.dir</name>
 26     <value>/opt/soft/hadoop313/data</value>
 27     <description>namenode上本地的hadoop临时文件夹</description>
 28   </property>
 29   <property>
 30     <name>hadoop.http.staticuser.user</name>
 31     <value>root</value>
 32   </property>
 33   <property>
 34     <name>io.file.buffer.size</name>
 35     <value>131072</value>
 36     <description>读写队列缓存：128k</description>
 37   </property>
 38   <property>
 39     <name>hadoop.proxyuser.root.hosts</name>
 40     <value>*</value>
 41   </property>
 42   <property>
 43     <name>hadoop.proxyuser.root.groups</name>
 44     <value>*</value>
 45   </property>
 46 </configuration>

配置hadoop-env.sh

vim hadoop-env.sh

 54  export JAVA_HOME=/opt/soft/jdk180

配置hdfs-site.xml

vim hdfs-site.xml

 <configuration>
  <property>
    <name>dfs.replication</name>
    <value>1</value>
    <description>hadoop中每一个block文件的备份数量</description>
  </property>
  <property>
    <name>dfs.namenode.name.dir</name>
    <value>/opt/soft/hadoop313/data/dfs/name</value>
    <description>namenode上存储hdfsq名字空间元数据的目录</description>
  </property>
  <property>
    <name>dfs.datanode.data.dir</name>
    <value>/opt/soft/hadoop313/data/dfs/data</value>
    <description>datanode上数据块的物理存储位置目录</description>
  </property>
  <property>
    <name>dfs.permissions.enabled</name>
    <value>false</value>
    <description>关闭权限验证</description>
  </property>
</configuration>

配置mapred-site.xml

vim mapred-site.xml

<configuration>
  <property>
    <name>mapreduce.framework.name</name>
    <value>yarn</value>
    <description>job执行框架：local,classic or yarn</description>
    <final>true</final>
  </property>
  <property>
    <name>mapreduce.application.classpath</name>
    <value>/opt/soft/hadoop313/etc/hadoop:/opt/soft/hadoop313/share/hadoop/common/lib/*:/opt/soft/hadoop313/share/hadoop/common/*:/opt/soft/hadoop313/share/hadoop/hdfs/*:/opt/soft/hadoop313/share/hadoop/hdfs/lib/*:/opt/soft/hadoop313/share/hadoop/mapreduce/*:/opt/soft/hadoop313/share/hadoop/mapreduce/lib/*:/opt/soft/hadoop313/share/hadoop/yarn/*:/opt/soft/hadoop313/share/hadoop/yarn/lib/*
  

  
    mapreduce.jobhistory.address
    cp145:10020
  
  
    mapreduce.jobhistory.webapp.address
    cp145:19888
  
  
    mapreduce.map.memory.mb
    1024
  
  
    mapreduce.reduce.memory.mb
    1024
  

配置yarn-site.xml

vim yarn-site.xml

<configuration>

<!-- Site specific YARN configuration properties -->
  <property>
    <name>yarn.resourcemanager.connect.retry-interval.ms</name>
    <value>20000</value>
  </property>
  <property>
    <name>yarn.resourcemanager.scheduler.class</name>
    <value>org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler</value>
  </property>
  <property>
    <name>yarn.nodemanager.localizer.address</name>
    <value>cp145:8040</value>
  </property>
  <property>
    <name>yarn.nodemanager.address</name>
    <value>cp145:8050</value>
  </property>
  <property>
    <name>yarn.nodemanager.webapp.address</name>
    <value>cp145:8042</value>
  </property>
  <property>
    <name>yarn.nodemanager.aux-services</name>
    <value>mapreduce_shuffle</value>
  </property>
  <property>
    <name>yarn.nodemanager.local-dirs</name>
    <value>/opt/soft/hadoop313/yarndata/yarn</value>
  </property>
  <property>
    <name>yarn.nodemanager.log-dirs</name>
    <value>/opt/soft/hadoop313/yarndata/log</value>
  </property>
</configuration>

配置环境

vim /etc/profile

#HADOOP_HOME
export HADOOP_HOME=/opt/soft/hadoop313
export PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$HADOOP_HOME/lib
export HDFS_NAMENODE_USER=root
export HDFS_DATANODE_USER=root
export HDFS_SECONDARYNAMENODE_USER=root
export HDFS_JOURNALNODE_USER=root
export HDFS_ZKFC_USER=root
export YARN_RESOURCEMANAGER_USER=root
export YARN_NODEMANAGER_USER=root
export HADOOP_MAPRED_HOME=$HADOOP_HOME
export HADOOP_COMMON_HOME=$HADOOP_HOME
export HADOOP_HDFS_HOME=$HADOOP_HOME
export HADOOP_YARN_HOME=$HADOOP_HOME
export HADOOP_INSTALL=$HADOOP_HOME
export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_HOME/lib/native
export HADOOP_LIBEXEC_DIR=$HADOOP_HOME/libexec
export HADOOP_CONF_DIR=$HADOOP_HOME/etc/hadoop

配置完

[root@cp145 hadoop]# source /etc/profile
[root@cp145 hadoop]# echo $HADOOP_HOME
/opt/soft/hadoop313
[root@cp145 hadoop]# 

执行即可初始化

hdfs namenode -format

start-all.sh

输入jps，得出一下结果则启动成功

输入 ip:9870成功访问网站