This change helps to avoid troubles like reported in #5018 and #4860.
Note that for sake of configuration simplicity, no new `ansible.timeout`
option has been added. The users who want to set a different value can
rely on `ansible.raw_arguments`.
This SSH option is always set, except when Vagrant is running from an
operating system fo the Solaris-family, as this parameter is not
supported by SunSSH. Logic taken from
bed1f8335f/lib/vagrant/util/ssh.rb (L116-L121)Fix#5017
Like Vagrant's default SSH behaviors (e.g ssh or ssh-config commands),
the Ansible provisioner should by default not modify or read the user
known host file (e.g. ~/.ssh/known_hosts).
Given that `UserKnownHostsFile=/dev/null` SSH option is usually combined
with `StrictHostKeyChecking=no`, it seems quite reasonable to bind the
activation/disactivation of both options to `host_key_checking`
provisioner attribute.
For the records, a discussion held in Ansible-Development mailing list
clearly confirmed that there is no short-term plan to adapt Ansible to
offer an extra option or change the behavior of
ANSIBLE_HOST_KEY_CHECKING. For this reason, the current implementation
seems reasonable and should be stable on the long run.
Close#3900
Related References:
- https://groups.google.com/forum/#!msg/ansible-devel/iuoZs1oImNs/6xrj5oa1CmoJ
- https://github.com/ansible/ansible/issues/9442
- force `--connection=ssh` (any other modes like paramiko or smart are not
supported)
- give the highest priority to `raw_arguments` for sake of simplicity (in
usage, in code and in documentation)
- fix position of the `--limit` argument (the generated inventory could be
shadowed by `raw_arguments`, while ansible.limit was able to override
`raw_arguments`
ref #3396
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
As a result of #4670 and the safe decision to not memoize
machine.ssh_info (see 89a4a29d65 and
5036d16461), it is preferable to store the
ssh_info hashes and avoid multiple function calls when generating the
ansible inventory.
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.
By referring the directory that contains the generated inventory file,
users can easily provide more settings with additional files stored in
the same directory.
Since the Ansible provisioner now potentially exports ANSIBLE_SSH_ARGS
variable, it is fair to allow to extend the content of this environment
variable (`ssh_args` parameters from ansible.cfg file have lower
priority)
Note that this feature requires to force `--connection=ssh`. This is not
a big deal as `paramiko` mode is deprecated and in most cases `smart`
mode enables `ssh` mode.
- The implicit default limit is always set
- ansible.limit as an empty string won't disable the default limit, but
will be passed as "--limit=" argument and ansible-playbook will return
an error (provided host list is empty)
- Support arbitrary depth of "groups of groups of ... groups"
- Skip ':vars' suffix, but allow group names with ':' (yes, Ansible
accepts this character)
- Like for groups of machines, groups of groups can result "empty", but
it is not an issue for Ansible. Recursive filter on the group tree is
a bit hard to implement, and don't brind real added value at Vagrant
level.
Except ':children' for groups of groups, it is safer to avoid generating
':suffix' blocks. At the moment Ansible only supports (but doesn't
recommend) group variables (:vars), and the Vagrant Ansible provisioner
won't support this way to define variables.
Syntax errors in `ansible.groups` definition are not well handled:
Error returned: undefined method `each' for "machine1":String (NoMethodError)
Being tolerant here doesn't hurt and may avoid people get
confused/annoyed.
env.active_machines can potentiall return 'invalid' machines:
- Ignore machines that are not declared in current Vagrantfile
- Warn when machines are missing (it usually occurs when the VM is
removed without `vagrant destroy` and some orphan metadata remains
in .vagrant/machines/...)
The Ansible provisioner will now only create a single inventory file named,
"vagrant_ansible_inventory". All defined Vagrant machines will be added to
this inventory file. Provisioning will now include a "--limit=#{machine}"
option to scope Ansible provisioning tasks to just the current machine. Setting
the Ansible provisioner's "limit" config option will override the new default
limit. Ansible provisioning scripts will now have access to all other defined
machines and what groups they reside in.
Without this change, it is not possible to pass more than one "raw"
argument, which was not the expected behavior. In addition to Array
format, String (for a single argument) is still accepted (for sake of
"backward compatibility" and ease of use).
Note: Due to low/expert usage of this option, I think that it is not
necessary to add more robust validation on this parameter (e.g. Array
of String type checking or argument syntax pattern matching). Use it at
your own risk ;-)
It is an under-documented feature that one can specify a directory as
the Ansible inventory source, not just a single file. In that case,
Ansible merges the contents of flat files and any executable inventory
plugins found in the directory.
This is useful, for instance, to put localhost in your inventory for use
with `local_action` even if your entire infrastructure is otherwise on
EC2 or some other dynamic inventory source. I also use a flat file to
create aliases for host groups automatically generated from the EC2 API,
like "staging" for `tag_Environment_staging`.
In eb70c0d6bb we were trying to compare a Subprocess::Result to a
Fixnum, resulting in Vagrant always reporting failure regardless of
Ansible's exit code.
Gilles Cornu
Veres Lajos
Kalman Hazins
jjshoe
Emilien Kenler
Mitchell Hashimoto
Bryan Hunt
Mark Aaron Shirley
Matthew Johnson
egghead
jabclab
Ben Mabey
Ches Martin
Collin Allen