实例学习ansible系列(4)常用模块之command/shell/raw

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知识点:使用module command或者shell或者raw都能调用对象机器上的某条指令或者某个可执行文件。

使用方法

[root@host31 ~]# ansible localhost -m command -a "echo hello"localhost | SUCCESS | rc=0 >>hello[root@host31 ~]# ansible localhost -m shell -a "echo hello"localhost | SUCCESS | rc=0 >>hello[root@host31 ~]# ansible localhost -m raw -a "echo hello"localhost | SUCCESS | rc=0 >>hello[root@host31 ~]#
   
   
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是否支持管道

               
module 是否支持管道
command 不支持管道
shell 支持管道
raw 支持管道
[root@host31 ~]# ansible localhost -m command -a "ps -ef |wc -l"localhost | FAILED | rc=1 >>error: garbage optionUsage: ps [options] Try 'ps --help <simple|list|output|threads|misc|all>'  or 'ps --help <s|l|o|t|m|a>' for additional help text.For more details see ps(1).[root@host31 ~]# ansible localhost -m shell -a "ps -ef |wc -l"localhost | SUCCESS | rc=0 >>448[root@host31 ~]# ansible localhost -m raw -a "ps -ef |wc -l"localhost | SUCCESS | rc=0 >>445[root@host31 ~]#
   
   
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直接执行某个文件

[root@host31 ~]# ansible host32 -m command -a "/tmp/ttt.sh"host32 | SUCCESS | rc=0 >>hello world[root@host31 ~]# ansible host32 -m raw -a "/tmp/ttt.sh"host32 | SUCCESS | rc=0 >>hello world[root@host31 ~]# ansible host32 -m shell -a "/tmp/ttt.sh"host32 | SUCCESS | rc=0 >>hello world[root@host31 ~]#
   
   
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都是支持的,但是需要注意/tmp/ttt.sh应该有执行权限

ansible-doc -s取得更详细信息

 

希望知道更加详细的module的信息,最好的方法是使用ansible自带的ansible-doc的-s选项

[root@host31 ~]# ansible-doc -s raw- name: Executes a low-down and dirty SSH command  action: raw      executable             # change the shell used to execute the command. Should be an absolute path to the executable.      free_form=             # the raw module takes a free form command to run[root@host31 ~]#[root@host31 ~]# ansible-doc -s shell- name: Execute commands in nodes.  action: shell      chdir                  # cd into this directory before running the command      creates                # a filename, when it already exists, this step will *not* be run.      executable             # change the shell used to execute the command. Should be an absolute path to the executable.      free_form=             # The shell module takes a free form command to run, as a string.  There's not an actual option                               named "free form".  See the examples!      removes                # a filename, when it does not exist, this step will *not* be run.      warn                   # if command warnings are on in ansible.cfg, do not warn about this particular line if set to                               no/false.[root@host31 ~]#[root@host31 ~]# ansible-doc -s command- name: Executes a command on a remote node  action: command      chdir                  # cd into this directory before running the command      creates                # a filename or (since 2.0) glob pattern, when it already exists, this step will *not* be run.      executable             # change the shell used to execute the command. Should be an absolute path to the executable.      free_form=             # the command module takes a free form command to run.  There is no parameter actually named 'free                               form'. See the examples!      removes                # a filename or (since 2.0) glob pattern, when it does not exist, this step will *not* be run.      warn                   # if command warnings are on in ansible.cfg, do not warn about this particular line if set to                               no/false.[root@host31 ~]#
   
   
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分享一下我老师大神的人工智能教程。零基础!通俗易懂!风趣幽默!还带黄段子!希望你也加入到我们人工智能的队伍中来!https://blog.csdn.net/jiangjunshow

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转载自blog.csdn.net/qq_43679903/article/details/87902437
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