ansible-vault 命令

1. ansible-vault 命令輔助說明，第一行列出的是所有可用的子命令。

   [deyu1@kvm19 ansible]$ ansible-vault --help
   usage: ansible-vault [-h] [--version] [-v]
                        {create,decrypt,edit,view,encrypt,encrypt_string,rekey}
                        ...
   
   encryption/decryption utility for Ansible data files
   
   positional arguments:
     {create,decrypt,edit,view,encrypt,encrypt_string,rekey}
       create              Create new vault encrypted file
       decrypt             Decrypt vault encrypted file
       edit                Edit vault encrypted file
       view                View vault encrypted file
       encrypt             Encrypt YAML file
       encrypt_string      Encrypt a string
       rekey               Re-key a vault encrypted file
   
   optional arguments:
     --version             show program's version number, config file location,
                           configured module search path, module location,
                           executable location and exit
     -h, --help            show this help message and exit
     -v, --verbose         Causes Ansible to print more debug messages. Adding
                           multiple -v will increase the verbosity, the builtin
                           plugins currently evaluate up to -vvvvvv. A reasonable
                           level to start is -vvv, connection debugging might
                           require -vvvv.
   
   See 'ansible-vault <command> --help' for more information on a specific
   command.