There was a catch-all `except` statement in `create_containers`:
try:
containers = do_create(count, params)
except:
self.pull_image()
containers = do_create(count, params)
This would mask a variety of errors that should be exposed, including
API compatability errors (as in #1707) and common Python exceptions (KeyError, ValueError, etc) that could result from errors in the code.
This change makes the `except` statement more specific, and only attempts to pull the image and start a container if the original create attempt failed due to a 404 error from the docker API.
The `docker` Python module only accepts `None` or `'host'` as arguments.
This makes it difficult to conditionally set the `pid` attribute using
standard Ansible syntax.
This change converts any value that evaluates as boolean `False` to
`None`, which includes empty strings:
pid:
As well as an explicit `false`:
pid: false
This permits the following to work as intended:
- hosts: localhost
tasks:
- name: starting container
docker:
docker_api_version: 1.18
image: larsks/mini-httpd
name: web
pid: "{{ container_pid|default('') }}"
If `container_pid` is set to `host` somewhere, this will create a
Docker container with `pid=host`; otherwise, this will create a
container with normal isolated pid namespace.
- Modified data type for port definition from string to integer
- Modified login_host default value for compatibilize with port definition according with MySQL Documentation (https://dev.mysql.com/doc/refman/5.0/en/connecting.html)
Port matching logic did not take into account recent shade change
to equate (None, None) to (1, 65535) when Nova is the backend.
Also, this encapsulates the port matching logic into a single function
and heavily documents the logic.
Port range min/max values are at times represented as string and
compared to int equivalents. This fix explicitly ensures all
port range values are ints for proper comparisons.
