ansible.builtin.tree callback – Save host events to files


This callback plugin is part of ansible-core and included in all Ansible installations. In most cases, you can use the short plugin name tree. However, we recommend you use the Fully Qualified Collection Name (FQCN) ansible.builtin.tree for easy linking to the plugin documentation and to avoid conflicting with other collections that may have the same callback plugin name.

Callback plugin

This plugin is a notification callback. It sends information for a playbook run to other applications, services, or systems. See Callback plugins for more information on callback plugins.


  • This callback is used by the Ansible (adhoc) command line option -t|--tree.

  • This produces a JSON dump of events in a directory, a file for each host, the directory used MUST be passed as a command line option.


The below requirements are needed on the local controller node that executes this callback.

  • invoked in the command line






added in ansible-core 2.11

directory that will contain the per host JSON files. Also set by the --tree option when using adhoc.

Default: "~/.ansible/tree"



Configuration entries for each entry type have a low to high priority order. For example, a variable that is lower in the list will override a variable that is higher up.