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Add validity check for [Driver][IPAddress] else use docker-machine ip command. (#412)

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* Add validity check for [Driver][IPAddress] else use docker-machine ip command.

* Note why we fallback to the `docker-machine ip <machine name>` command.

* Add changelog fragment.

* Corrected module name in changelog fragment.

Co-authored-by: Ben Roose <ben.roose@wichita.edu>
This commit is contained in:
ximon18 2020-05-25 23:04:09 +02:00 committed by GitHub
parent b00ee3b807
commit 3ff7a0baf2
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2 changed files with 19 additions and 1 deletions
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2
changelogs/fragments/412-docker-machine-add-ip-fallback.yaml Normal file
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@ -0,0 +1,2 @@
bugfixes:
- docker_machine - fallback to ip subcommand output if IPAddress is missing (https://github.com/ansible-collections/community.general/issues/412).

18
plugins/inventory/docker_machine.py
View file

@ -176,6 +176,14 @@ class InventoryModule(BaseInventoryPlugin, Constructable, Cacheable):
return json.loads(inspect_lines)
def _ip_addr_docker_machine_host(self, node):
try:
ip_addr = self._run_command(['ip', self.node])
except subprocess.CalledProcessError:
return None
return ip_addr
def _should_skip_host(self, machine_name, env_var_tuples, daemon_env):
if not env_var_tuples:
warning_prefix = 'Unable to fetch Docker daemon env vars from Docker Machine for host {0}'.format(machine_name)
@ -210,9 +218,17 @@ class InventoryModule(BaseInventoryPlugin, Constructable, Cacheable):
# add an entry in the inventory for this host
self.inventory.add_host(machine_name)
# check for valid ip address from inspect output, else explicitly use ip command to find host ip address
# this works around an issue seen with Google Compute Platform where the IP address was not available
# via the 'inspect' subcommand but was via the 'ip' subcomannd.
if self.node_attrs['Driver']['IPAddress']:
ip_addr = self.node_attrs['Driver']['IPAddress']
else:
ip_addr = self._ip_addr_docker_machine_host(self.node)
# set standard Ansible remote host connection settings to details captured from `docker-machine`
# see: https://docs.ansible.com/ansible/latest/user_guide/intro_inventory.html
self.inventory.set_variable(machine_name, 'ansible_host', self.node_attrs['Driver']['IPAddress'])
self.inventory.set_variable(machine_name, 'ansible_host', ip_addr)
self.inventory.set_variable(machine_name, 'ansible_port', self.node_attrs['Driver']['SSHPort'])
self.inventory.set_variable(machine_name, 'ansible_user', self.node_attrs['Driver']['SSHUser'])
self.inventory.set_variable(machine_name, 'ansible_ssh_private_key_file', self.node_attrs['Driver']['SSHKeyPath'])