init.yml

---

- hosts: zookeepers
  user: root
  sudo_user: "{{zookeeper.owner}}"
  sudo: true
  tasks:
    - name: start zookeepers
      raw: source /etc/profile;zkServer.sh start
    - name: format zookeeper for hdfs
      raw: source /etc/profile;hdfs zkfc -formatZK -force
  tags:
    - init_zookeeper

- hosts: journalnodes
  user: root
  sudo_user: "{{hadoop.owner}}"         
  sudo: true
  tasks:
    - name: start journalnodes
      raw: source /etc/profile;hadoop-daemon.sh start journalnode
      ignore_errors: True
  tags:
    - init_hadoop
      
- hosts: namenodes[0]
  user: root
  sudo_user: "{{hadoop.owner}}"         
  sudo: true
  tasks:
    - name: format first namenode
      raw: source /etc/profile;hdfs namenode -format -force
    - name: init share edits
      raw: source /etc/profile;hdfs namenode -initializeSharedEdits -force
    - name: start first namenode
      raw: source /etc/profile;hadoop-daemon.sh start namenode
  tags:
    - init_hadoop      
      
- hosts: namenodes[1]
  user: root
  sudo_user: "{{hadoop.owner}}"         
  sudo: true
  tasks:
    - name: format seconde namenode
      raw: source /etc/profile;hdfs namenode -bootstrapStandby
    - name: start seconde namenode
      raw: source /etc/profile;hadoop-daemon.sh start namenode
  tags:
    - init_hadoop
    
- hosts: datanodes
  user: root
  sudo_user: "{{hadoop.owner}}"         
  sudo: true
  tasks:
    - name: remove datanode data dir
      file: >
        state=absent path={{item}}         
        owner={{zookeeper.owner}} 
        group={{zookeeper.group}} 
        mode=755 
      with_items:
        - "{{hadoop.hdfs_site.dfs_data_dir}}"
  tags:
    - init_hadoop
      
# 初始化完成后，停止所有启动的进程。以免调用启动命令的时候出现进程重复
- include: stop.yml