kolla-ansible/releasenotes/notes/docker-disable-bridge-14df8b7fddbd5000.yaml
Dincer Celik 4053a0afdb [docker] Added a new flag to disable default network
Docker is using 172.17.0.0/16 by default for bridge networking on
docker0, and this might cause routing problems for operator networks.

This change introduces docker_disable_default_network to disable the
bridge networking by putting "bridge: none"[1] to daemon.json

Bridge networking does not work without iptables, so we set the default
for docker_disable_default_network to
docker_disable_default_iptables_rules.

For better defaults, this feature will be enabled by default in
Wallaby.

[1] https://docs.docker.com/engine/reference/commandline/dockerd/

Change-Id: Ic745300b27e50132d80d03787fa4abfada2d0173
Closes-Bug: #1848249
Related-Bug: #1849275
2021-03-11 18:03:28 +00:00

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YAML

---
features:
- |
Adds a new flag, ``docker_disable_default_network``, which
defaults to ``no``. Docker is using ``172.17.0.0/16`` by default for bridge
networking on ``docker0``, and this might cause routing problems for
operator networks. Setting this flag to ``yes`` will disable Docker's
bridge networking. This feature will be enabled by default from the
Wallaby 12.0.0 release.