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known_hosts - Add or remove a host from the known_hosts file

New in version 1.9.

Synopsis

  • The known_hosts module lets you add or remove a host keys from the known_hosts file.
  • Starting at Ansible 2.2, multiple entries per host are allowed, but only one for each key type supported by ssh. This is useful if you’re going to want to use the git module over ssh, for example.
  • If you have a very large number of host keys to manage, you will find the template module more useful.

Options

parameter required default choices comments
hash_host
(added in 2.3)
 no
Hash the hostname in the known_hosts file
key
 no
The SSH public host key, as a string (required if state=present, optional when state=absent, in which case all keys for the host are removed). The key must be in the right format for ssh (see sshd(8), section "SSH_KNOWN_HOSTS FILE FORMAT")
name
 yes
The host to add or remove (must match a host specified in key). It will be converted to lowercase so that ssh-keygen can find it.
aliases: host
path
 no (homedir)+/.ssh/known_hosts
The known_hosts file to edit
state
 no present
  • present
  • absent
present to add the host key, absent to remove it.

Examples

- name: tell the host about our servers it might want to ssh to
  known_hosts:
    path: /etc/ssh/ssh_known_hosts
    name: foo.com.invalid
    key: "{{ lookup('file', 'pubkeys/foo.com.invalid') }}"

Status

This module is flagged as preview which means that it is not guaranteed to have a backwards compatible interface.

For help in developing on modules, should you be so inclined, please read Community Information & Contributing, Testing Ansible and Developing Modules.

© 2012–2017 Michael DeHaan
© 2017 Red Hat, Inc.
Licensed under the GNU General Public License version 3.
https://docs.ansible.com/ansible/latest/known_hosts_module.html