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I'm using Ansible 1.5.4 to provision my Vagrant 1.4.3 box on Ubuntu 14.04 LTS.
I'm getting the following error message in verbose mode:
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
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I can do: export ANSIBLE_HOST_KEY_CHECKING=False and I have following lines in my ~/.ansible.cfg:
[defaults]
host_key_checking = False
But it doesn't help.
What could be the problem? Thank you!
I'm calling it directly like this (without using vagrant command):
ansible-playbook playbook.yml -i inventory.ini --user=vagrant --ask-pass -vvvv
The inventory is:
[default]
localhost:2222
847
Host key checking is on by default. Disable it if you like by adding host_key_checking=False in the [default] section of /etc/ansible/ansible. cfg or ~/ansible. cfg or by exporting ANSIBLE_HOST_KEY_CHECKING=False.
Ansible enables host key checking by default. Checking host keys guards against server spoofing and man-in-the-middle attacks, but it does require some maintenance. If a host is reinstalled and has a different key in 'known_hosts', this will result in an error message until corrected.
Two options - the first, as you said in your own answer, is setting the environment variable ANSIBLE_HOST_KEY_CHECKING to False. The second way to set it is to put it in an ansible. cfg file, and that's a really useful option because you can either set that globally (at system or user level, in /etc/ansible/ansible.
In host key checking, ssh automatically maintains and checks a database containing identification for all hosts it has ever been used with. Host keys are stored in ~/. ssh/known_hosts in the user's home directory. Additionally, the /etc/ssh/ssh_known_hosts file is automatically checked for known hosts.
You'll need to set it via the Vagrantfile of the project. When the Vagrant Ansible provisioner makes the call to ansible-playbook it always sets the value of the ANSIBLE_HOST_KEY_CHECKING environment variable.
Ansible itself takes the value of the environment variable if present. Therefore Vagrant will override the value used in your ansible.cfg.
Therefore you just need something like:
machine.vm.provision :ansible do |ansible|
ansible.host_key_checking = false
# etc.
end
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