Disabling the oom-killer for a container without setting a memory limit
is dangerous, as it can result in the container consuming unlimited memory,
without the kernel being able to kill it. A check for this situation is curently
done in the CLI, but other consumers of the API won't receive this warning.
This patch adds a check for this situation to the daemon, so that all consumers
of the API will receive this warning.
This patch will have one side-effect; docker cli's that also perform this check
client-side will print the warning twice; this can be addressed by disabling
the cli-side check for newer API versions, but will generate a bit of extra
noise when using an older CLI.
With this patch applied (and a cli that does not take the new warning into account);
```
docker create --oom-kill-disable busybox
WARNING: OOM killer is disabled for the container, but no memory limit is set, this can result in the system running out of resources.
669933b9b237fa27da699483b5cf15355a9027050825146587a0e5be0d848adf
docker run --rm --oom-kill-disable busybox
WARNING: Disabling the OOM killer on containers without setting a '-m/--memory' limit may be dangerous.
WARNING: OOM killer is disabled for the container, but no memory limit is set, this can result in the system running out of resources.
```
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Migrate legacy volumes (Daemon.verifyVolumesInfo) before containers are
registered on the Daemon, so state on disk is not overwritten and legacy
fields lost during registration.
Signed-off-by: Fabio Kung <fabio.kung@gmail.com>
Reuse existing structures and rely on json serialization to deep copy
Container objects.
Also consolidate all "save" operations on container.CheckpointTo, which
now both saves a serialized json to disk, and replicates state to the
ACID in-memory store.
Signed-off-by: Fabio Kung <fabio.kung@gmail.com>
This also moves some cli specific in `cmd/dockerd` as it does not
really belong to the `daemon/config` package.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
This was removed in a clean-up
(060f4ae617) but should not have been.
Fixes issues with volumes when upgrading from pre-1.7.0 daemons.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
All other options we have use `=` as separator, labels,
log configurations, graph configurations and so on.
We should be consistent and use `=` for the security
options too.
Signed-off-by: David Calavera <david.calavera@gmail.com>
- Make the API client library completely standalone.
- Move windows partition isolation detection to the client, so the
driver doesn't use external types.
Signed-off-by: David Calavera <david.calavera@gmail.com>
