When re-deploying a stack without re-resolving the image digest,
the service's ContainerSpec was updated with the image-reference
as specified in the stack/compose file.
As a result, the image-digest that was resolved in a previous
deploy was overwritten, causing the service to be re-deployed.
This patch preserves the previously resolve image-digest
by copying it from the current service spec.
A unit test is also added to verify that the image information
in the service spec is not updated if QueryRegistry is disabled.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
When running `docker stack rm <some stack>` against an older daemon,
a warning was printed for "configs" being ignored;
WARNING: ignoring "configs" (requires API version 1.30, but the Docker daemon API version is 1.26)
Given that an old daemon cannot _have_ configs, there should not be
a need to warn, or _attempt_ to remove these resources.
This patch removes the warning, and skips fetching (and removing)
configs.
A check if _secrets_ are supported by the daemon is also added,
given that this would result in an error when attempted against
an older (pre 1.13) daemon.
There is one situation where this could lead to secrets or
configs being left behind; if the client is connecting to a
daemon that _does_ support secrets, configs, but the API version
is overridden using `DOCKER_API_VERSION`, no warning is printed,
and secrets and configs are not attempted to be removed.
Given that `DOCKER_API_VERSION` is regarded a feature for
debugging / "power users", it should be ok to ignore this.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Sebastiaan van Stijn
Arash Deshmeh
Vincent Demeester
John Stephens
Gaetan de Villele
Tibor Vass
Daniel Nephin
Daniel Nephin