SSH into a Vagrant machine with Ansible

The problem probably lies within your hosts/inventory file. You need to add the proper connection configuration for Ansible therein, save and re-run.

192.168.50.5 ansible_ssh_port=22 ansible_ssh_user=vagrant ansible_ssh_private_key_file=~/.ssh/id_rsa 

If you are not using port 22, adjust the ansible_ssh_port in your hosts file accordingly.

It is also a possibility that you have not setup your pubkey in Vagrant, hence this would also not work. To test this, run:

vagrant ssh-config | grep IdentityFile
# result should be your private key and not
#   .vagrant/machines/default/virtualbox/private_key

If you have not put your pubkey in the Vagrant vm, you will need to add that before you can try your private key.

Reference: http://docs.ansible.com/ansible/intro_inventory.html#list-of-behavioral-inventory-parameters

Reference: https://docs.vagrantup.com/v2/cli/ssh_config.html

I think that you should try using the inventory generated by vagrant. This will save you from having to maintain an Ansible inventory in addition to your Vagrantfile.

For example, you should find an inventory like this used for vagrant ssh:

cat .vagrant/provisioners/ansible/inventory/vagrant_ansible_inventory
>>>
# Generated by Vagrant

default ansible_host=127.0.0.1 ansible_port=2222 ansible_user='vagrant' ansible_ssh_private_key_file='/home/someone/coding-in-a-project/.vagrant/machines/default/virtualbox/private_key'

You will be able to run ansible ad-hoc commands and ansible-playbook commands. (specify this maybe for your needs : --private-key=~/.ssh/your_private_key)

ansible default -i .vagrant/provisioners/ansible/inventory/vagrant_ansible_inventory -m ansible.builtin.shell -a 'echo foobar'

ansible-playbook -i .vagrant/provisioners/ansible/inventory/vagrant_ansible_inventory playbook.yml

source : https://docs.ansible.com/ansible/latest/scenario_guides/guide_vagrant.html