What Is Shell Module In Ansible

What is a shell module?

The shell module takes the command name followed by a list of space-delimited arguments. It is almost exactly like the command module but runs the command through a shell ( /bin/sh ) on the remote node. For Windows targets, use the win_shell module instead.

Which shell does Ansible use?

By default, the shell module uses the /bin/sh shell to execute commands, but it's possible to use other shells such as /bin/bash by passing the executable argument.

What is the difference between Command and shell module in Ansible?

The shell module in Ansible is used to execute all Shell commands against the target Unix-based hosts. The shell module executes commands in nodes or Shell scripts. In the command module, the given command executes on all selected nodes. The executed command will not be processed through the shell.

How do you run a shell script on a remote server using Ansible?

  • On Host1: Create file crunchify-script.sh under folder /opt/ashah/
  • On Host2: Create folder /opt/ashah/
  • Copy crunchify-script.sh file from Host1 to Host2 under folder /opt/ashah/
  • Execute file crunchify-script.sh on remote host using ansible-playbook command.
  • Get command line complete result back.
  • How do I run sed in Ansible?

  • cd /tmp/Ratings_DB.
  • Run the command as sudo - sudo sed -i 's/TYPE/ENGINE/' *. sql.
  • The files are created from root account hence sudo.
  • Why is shell script better than ansible?

    Ansible can perform the function of not only setting up your systems, but also testing them for correctness. By contrast, a shell script can be very dangerous to run more than once unless you're extremely careful and know exactly what every line does. Note: The Ansible script can be improved.

    What are the modules in ansible?

    discrete units of code

  • os10_command.py —Run commands on devices running OS10.
  • os10_config.py —Manage configuration on devices running OS10.
  • os10_facts.py —Collect facts from devices running OS10.
  • How many ansible modules are there?

    Ansible contains a giant toolbox of built-in modules, well over 750 of them.

    What is pipe in Ansible?

    With the pipe character you pass a value to a filter. There are numerous Jinja 2 filters but Ansible brings some additional filters. The term filter might be confusing at times because all the filters work very differently.

    What does Set_fact do in Ansible?

    Ansible set_fact is a useful tool. This helps you to gather information from your remote hosts and adds the flexibility of modifying it before assigning it. Also, you may acknowledge that if you have a lot of hosts to be managed by Ansible, then working with set_fact is quite complex.

    What is async and poll in Ansible?

    If you want to run multiple tasks in a playbook concurrently, use async with poll set to 0. When you set poll: 0 , Ansible starts the task and immediately moves on to the next task without waiting for a result. Each async task runs until it either completes, fails or times out (runs longer than its async value).

    How do I use Ansible shell module?

  • Ansible Shell module to execute a Single Command.
  • Ansible Shell – Execute a Command with Pipe and Redirection.
  • Execute a Shell Script with Ansible Shell command.
  • Run a Shell command in a specific directory.
  • Run a Shell Command only if the file present or not present.
  • What is raw module in Ansible?

    Note. This module is part of ansible-core and included in all Ansible installations. In most cases, you can use the short module name raw even without specifying the collections: keyword.

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