ansible基础用法8_block and line

最新推荐文章于 2024-06-20 17:53:37 发布

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最新推荐文章于 2024-06-20 17:53:37 发布

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分类专栏： Ansible-playbook

本文链接：https://blog.youkuaiyun.com/zuopiezia/article/details/108757020

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blockinfile模块可以在指定的文件中插入一段文本，这段文本是被标记过的，以便在以后的操作中可以通过标记找到这段文本，然后修改或者删除这段文本

lineinfile模块可以确保某一行文本存在于指定的文件中，或者确保从文件中删除指定的文本，还可以根据正则表达式替换某一行文本

其实两则没有本质的区别，line 针对某行，block 是某个段或者某几行

---
- hosts: all

  tasks:
    - name: judge file is exits
      stat: path=/opt/block.txt
      ignore_errors: True
      register: file_result

    - debug:
        msg: "the block.txt not exists"
      when: file_result.stat.exists != True
    - debug:
        msg: "the block.txt is exists"
      when: file_result.stat.exists != False


    - name: the block.txt is not exists and create the file
      file: path=/opt/block.txt state=touch mode=0777
      when: file_result.stat.exists != True


    - name: cat /opt/block.txt
      shell : cat /opt/block.txt
      register: result
    - debug:
        msg: "{{ result.stdout_lines }}"
      ignore_errors: yes

    - name: delete the block1
      lineinfile:
        dest: /opt/block.txt
        regexp: '^{{item}}'
        state: absent
      with_items:
        - b*
        - "ANSIBLE INJECTED  NODE SSH FOR"



    - name: insert lineinfile in file
      blockinfile:
        dest: /opt/block.txt
        state: present
        marker: "ANSIBLE INJECTED  NODE SSH FOR"
        block: |
          block1
          block2
          block3
#      run_once: yes

同样 lineinfile 也能达到相同的效果

---
- hosts: all
  tasks:
    - name: line more line
      lineinfile:
        dest: /opt/block.txt
        regexp: line1
        line: |
          line3
          line4

结果输出

[root@ansible AnsibleInstallRpm]# ansible-playbook ansible_base8.yml 

PLAY [all] *********************************************************************

TASK [setup] *******************************************************************
ok: [node2]
ok: [node1]

TASK [line more line] **********************************************************
changed: [node2]
changed: [node1]

PLAY RECAP *********************************************************************
node1                      : ok=2    changed=1    unreachable=0    failed=0   
node2                      : ok=2    changed=1    unreachable=0    failed=0   

[root@ansible AnsibleInstallRpm]# ansible all -m shell -a "cat /opt/block.txt"
node2 | SUCCESS | rc=0 >>
ANSIBLE INJECTED  NODE SSH FOR
block1
block2
block3
ANSIBLE INJECTED  NODE SSH FOR
line3
line4

node1 | SUCCESS | rc=0 >>
ANSIBLE INJECTED  NODE SSH FOR
block1
block2
block3
ANSIBLE INJECTED  NODE SSH FOR
line3
line4