When `--connection` argument is not specified, Ansible will use the
'smart' mode, which can either use `ssh` or `paramiko` transports,
depending of the version of OpenSSH available. If OpenSSH version is new
enough to support ControlPersist technology, `ssh` will be used.
See also http://docs.ansible.com/intro_configuration.html#transport.
In order to support some advanced features of Vagrant (e.g. multiple ssh
private key identities or ssh forwarding), the Ansible provisioner
already must force `ssh` connection mode.
Having to deal with the possible fallback to `paramiko` increase the
burden of special cases that Ansible provisioner must handle, without
any added value, as Vagrant is based on OpenSSH and its users are
usually using modern operating systems.
With this change, the Ansible provisioner will officially only support
`ssh`. It will still be possible to switch to another connection mode
via `raw_arguments`, but it will breach the "contract", and no
(community) support can be expected in such use case.
ref #3900, #3396
I still cannot explain the cause of these random errors in this unit test,
but it is anyway safe and suitable to update the test code as following:
- use stricter regular expression matching (-l is included in --limit)
- array lengths substraction instead of array contents substraction
Motivation:
By printing out the ansible command used behind the scene, we can ease
the support effort to very quickly identify whether a problem is due to
Vagrant provisioner or Ansible itself.
Combine a maximum of options in the last test:
- Ansible Vault options from [GH-3338]
- raw_arguments
Note: it is not expected from Vagrant to reject incoherent combinations
- Don't mock the config object, but use a true instance
- When possible, take advantage of Rpsec before/after hooks to
reduce code repetitions
- Add an example ("with inventory_path option")
- Use a global variable to store the path of the generated inventory
- Miscellaneous changes in existing examples (style, fixes)
Gilles Cornu
jjshoe
Emilien Kenler