Ansible - host_list dynamic inventory plugin

If you are not familiar dynamic inventory, check out Ansible - Getting Started with Dynamic Inventory.

This assumes you have the host_list plugin in ansible.cfg enabled, like this.

# enable inventory plugins, default: 'host_list', 'script', 'yaml', 'ini'
enable_plugins = host_list, yaml, ini


The ansible command with the --list-hosts and -vvv flags can be used to determine if the host_list plugin is being used.


When targetting a single managed node, you must include a comma after the managed node hostname

When targetting two (or more) managed nodes, including a comma after the last managed node is optional

ansible all -i "," --list-hosts -vvv


If you get something like this, this suggests you did not define host_list in ansible.cfg properly.

[WARNING]: Unable to parse, as an inventory source


If the following is returned, the host_list plugin is being used.

Parsed, inventory source with host_list plugin


Something like this should be returned.

  hosts (2):


Or, the ansible-inventory --list command can be used.

ansible-inventory -i "," --list


Or, the ansible-inventory --graph command can be used.

ansible-inventory -i "," --graph


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