4. hadoop启动脚本分析

4. hadoop启动脚本分析

1. hadoop的端口

```  
50070		//namenode http port
50075		//datanode http port
50090		//2namenode	http port
8020		 //namenode rpc port
50010		//datanode rpc port

2. 脚本分析

1. 首先进入/soft/hadoop/sbin/目录下
   

2. cat start-all.sh

   

   1. libexec/hadoop-config.sh
   2. start-dfs.sh
   3. start-yarn.sh

3. cat libexec/hadoop-config.sh

   hadoop_conf_dir =etc/hadoop

   

4. cat sbin/start-dfs.sh

   

   1. libexec/hadoop-config.sh
   2. sbin/hadoop-daemons.sh --config .. --hostname .. start namenode ...
   3. sbin/hadoop-daemons.sh --config .. --hostname .. start datanode ...
   4. sbin/hadoop-daemons.sh --config .. --hostname .. start sescondarynamenode ...
   5. sbin/hadoop-daemons.sh --config .. --hostname .. start zkfc ...

5. cat sbin/start-yarn.sh

   

   1. libexec/yarn-config.sh
   2. sbin/yarn-daemon.sh start resourcemanager
   3. sbin/yarn-daemons.sh start nodemanager

6. cat sbin/hadoop-daemons.sh

   

   1. libexec/hadoop-config.sh
   2. salves
   3. sbin/hadoop-daemon.sh

7. cat sbin/hadoop-daemon.sh

   
   

   1. libexec/hadoop-config.sh
   2. bin/hdfs ..

8. cat sbin/yarn-daemon.sh

   

   

   1. libexec/yarn-config.sh
   2. bin/yarn

3. bin下相关脚本分析

1. cat bin/hadoop

   
   

2. hadoop dfs 与 fs 的区别

   
   

3. cat bin/hdfs