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                            啟動
[TOC]
## 1. 啟動HDFS(在bd00上執行)
~~~
start-dfs.sh
~~~
## 2. 啟動YARN(在bd01|bd02上執行)
~~~
start-yarn.sh
~~~
resourcemanager備用節點(在bd01|bd02上執行)
~~~
yarn-daemon.sh start resourcemanager
~~~
>如果備用節點沒有起來的話，在resourcemanager的備用節點執行

## 3. 啟動 mapreduce 任務歷史服務器
```
mr-jobhistory-daemon.sh start historyserver
```
>好像是哪個節點都可以？
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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