Fuel does not allow to deploy environment without controllers and gives error like this:
Error: Not enough controllers, ha_compact mode requires at least 1 controller(s)
This blocks any possibility to deploy deeply customized configurations using Fuel Plugins. For instance: I may want to introduce brand new role that will replace our standard controller role and use this role in my deployment. But Nailgun will not allow this.
Steps to reproduce:
1) Create env without controllers (for example with 1 compute)
2) Deploy changes
Expected result:
Some kind of warning about possible problems and started deployment process
Actual result:
Deployment is not started, "Not enough controllers, ha_compact mode requires at least 1 controller(s)" is shown
VERSION:
feature_groups:
- mirantis
production: "docker"
release: "8.0"
api: "1.0"
build_number: "461"
build_id: "461"
fuel-nailgun_sha: "be3b6aa15ead51a0d080796316bf60e61cef24dc"
python-fuelclient_sha: "4f234669cfe88a9406f4e438b1e1f74f1ef484a5"
fuel-agent_sha: "9d550d821ef2d2b310803fccd953baa7cbb2152b"
fuel-nailgun-agent_sha: "92ebd5ade6fab60897761bfa084aefc320bff246"
astute_sha: "b81577a5b7857c4be8748492bae1dec2fa89b446"
fuel-library_sha: "60edcca1b81fe50afe36796c2f5d98ea752bd55c"
fuel-ostf_sha: "f66b1208bb9214513a042d52226583473f6117ea"
fuel-mirror_sha: "b62f3cce5321fd570c6589bc2684eab994c3f3f2"
fuelmenu_sha: "6c1888a48e2c3244d7fdf6409c22874aac8a7495"
shotgun_sha: "63645dea384a37dde5c01d4f8905566978e5d906"
network-checker_sha: "9f0ba4577915ce1e77f5dc9c639a5ef66ca45896"
fuel-upgrade_sha: "616a7490ec7199f69759e97e42f9b97dfc87e85b"
fuelmain_sha: "1777390e250c6889158a0f74c3287a4565f3fef2"
I would propose feature to enable fuel-plugin declare controller role that would make our checks happy.
That's means it is a feature that requires blueprint.
Controller node is *crucial* role and removing checks for it seems like a drastic solution.