模組文件

1. 查詢 shell 模組文件。

   [deyu1@kvm19 ansible]$ ansible-doc shell
   

2. 查詢 shell 模組文件的範例，執行腳本並將輸出導向到檔案。

   [deyu1@kvm19 ansible]$ ansible-doc shell | grep ^EX -A3
   EXAMPLES:
   
   - name: Execute the command in remote shell; stdout goes to the specified file
    on the remote.
     ansible.builtin.shell: somescript.sh >> somelog.txt
   

3. 切換到 somedir 目錄，執行腳本並將輸出導向到檔案。

   - name: Change the working directory to somedir/ before executing the command.
     ansible.builtin.shell: somescript.sh >> somelog.txt
     args:
       chdir: somedir/
   

4. 切換到 somedir 目錄，只在 somelog.txt 不存在時，才執行腳本並將輸出導向到檔案 somelog.txt。

   # You can also use the 'args' form to provide the options.
   - name: This command will change the working directory to somedir/ and will
    only run when somedir/somelog.txt doesn't exist.
     ansible.builtin.shell: somescript.sh >> somelog.txt
     args:
       chdir: somedir/
       creates: somelog.txt
   

5. /bin/sh 不支援 cat < /tmp/*txt，參數 executable 指定使用 /bin/bash。

   - name: Run a command that uses non-posix shell-isms (in this example /bin/sh
    doesn't handle redirection and wildcards together but bash does)
     ansible.builtin.shell: cat < /tmp/*txt
     args:
       executable: /bin/bash
   

6. 使用樣板變數。

   - name: Run a command using a templated variable (always use quote filter to
    avoid injection)
     ansible.builtin.shell: cat {{ myfile|quote }}
   

7. expect 互動程式。

   # You can use shell to run other executables to perform actions inline
   - name: Run expect to wait for a successful PXE boot via out-of-band CIMC
     ansible.builtin.shell: |
       set timeout 300
       spawn ssh admin@{{ cimc_host }}
   
       expect "password:"
       send "{{ cimc_password }}\n"
   
       expect "\n{{ cimc_name }}"
       send "connect host\n"
   
       expect "pxeboot.n12"
       send "\n"
       exit 0
     args:
       executable: /usr/bin/expect
     delegate_to: localhost
   

8. 關閉警告訊息。

   # Disabling warnings
   - name: Using curl to connect to a host via SOCKS proxy (unsupported in uri).
    Ordinarily this would throw a warning.
     ansible.builtin.shell: curl --socks5 localhost:9000 http://www.ansible.com
     args:
       warn: no