ansible Command and Raw module

Command Module

The command module is the ansible default module, the command module is used when the-m parameter is not specified;
Comand modules are simple, common commands can be used, but the execution of their commands is not performed through the shell, so, such as "<", ">", "|", and "&" operation can not, the running command does not support variable use and does not support the pipeline;
Example: displaying the current user

[[email protected] ~]# ansible all-a ' whoami ' db | SUCCESS | Rc=0 >>rootweb | SUCCESS | Rc=0 >>root192.168.33.132 | SUCCESS | Rc=0 >>root

Command usage

[[email protected] ~]# ansible-doc -s commandless 436copyright  (C)   1984-2009 mark nudelmanless comes with no warranty, to the extent  permitted by law. for information about the terms of redistribution,see the file  Named readme in the less distribution. Homepage: http://www.greenwoodsoftware.com/less- name: executes a command on  a remote node  action: command      chdir                   #  cd into this directory before running the command       creates                 # a filename or&nbSP; (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.

-Name: Execute command on remote node
Action:command
chdir # Switch to the directory before executing the command
creates # A filename, when the file exists, the command does not execute
executable # switch Shell to execute command, need to use absolute path of command
free_form= #要执行的Linux指令, generally use the-a parameter of ansible instead.
removes #一个文件名, this file does not exist, then the command does not execute

Raw, similar to command, but can pass pipelines

Usage

[[email protected] ~]# ansible-doc -s rawless 436copyright  (C)   1984-2009 mark nudelmanless comes with no warranty, to the extent  permitted by law. for information about the terms of redistribution,see the file  Named readme in the less distribution. Homepage: http://www.greenwoodsoftware.com/less- 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 

example, view the swap status on the Web server

[[email protected] ~]# ansible web-m raw-a ' free-m|grep Swap ' web | SUCCESS | Rc=0 >>swap:2047 0 2047

This article is from the "Village Boys" blog, please make sure to keep this source http://noodle.blog.51cto.com/2925423/1769448

ansible Command and Raw module