Ansible's shell and script module

Using the shell module, the remote command is executed through/bin/sh, so we can use the various command methods in the terminal input;
But we define our own environment variables in. Bashrc/.bash_profile The shell module is not recognized because it is not loaded, and if you need to use a custom environment variable, you need to execute the statement that loads the custom script at the very beginning;

The use of shell modules can be divided into two blocks:

shell module uses the same as the command parameter

[[email protected] ~]# ansible-doc -s shellless 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: 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     &nbsP;           # 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.

If there are fewer statements to execute, it can be written together, and the environment can be loaded ... [Email protected] ~]# ansible web-m shell-a '. ~/.bash_profile;ps-ef|grep httpd ' web | SUCCESS | rc=0 >>root 4406 4405 0 06:32 pts/0 00:00:00/bin/sh-c. ~/.bash_profile;ps-ef|grep httpdroot 4410 4406 0 06:32 pts/0 00:00:00 grep httpd

The scripts module can write a script locally and then execute it on the remote server. As follows

[[email protected] ~]# ansible-doc -s scriptless 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: runs a local script  on a remote node after transferring it  action: script       creates                 # a filename, when it already exists, this  step will *not* be run.      free_form=              # path to the local script file followed by  optional arguments.      removes                 # a filename, when it does  not exist, this step will *not* be run.

Name: Copy the local script to the remote host and run it
Action:script
Creates # a filename, when the file exists, the command does not execute
free_form= # Local Script path
Removes # A filename, this file does not exist, then the command does not execute

[email protected] ~]# cat time.sh #!/bin/bashdate >/tmp/shijian

Using the script module, the use is quite a path or an absolute path can be used.

[Email protected] ~]# ansible web-m script-a ' time.sh ' web | SUCCESS = {"Changed": True, "RC": 0, "stderr": "", "stdout": "", "Stdout_lines": []}

Verify the content on the Web server

[Email protected] ~]# ansible web-a ' Cat/tmp/shijian '

web | SUCCESS | Rc=0 >>

Sun May 1 06:35:30 CST 2016

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Ansible's shell and script module