```
Line 25: warning: context.Context should be the first parameter of a function (golint)
Line 44: warning: context.Context should be the first parameter of a function (golint)
Line 52: warning: context.Context should be the first parameter of a function (golint)
```
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Refactored exiting logic on way that layers are first marked to be under
removal so if actual removal fails they can be found from disk and
cleaned up.
Full garbage collector will be implemented as part of containerd
migration.
Signed-off-by: Olli Janatuinen <olli.janatuinen@gmail.com>
This adds both a daemon-wide flag and a container creation property:
- Set the `CgroupnsMode: "host|private"` HostConfig property at
container creation time to control what cgroup namespace the container
is created in
- Set the `--default-cgroupns-mode=host|private` daemon flag to control
what cgroup namespace containers are created in by default
- Set the default if the daemon flag is unset to "host", for backward
compatibility
- Default to CgroupnsMode: "host" for client versions < 1.40
Signed-off-by: Rob Gulewich <rgulewich@netflix.com>
This is enabled for all containers that are not run with --privileged,
if the kernel supports it.
Fixes#38332
Signed-off-by: Rob Gulewich <rgulewich@netflix.com>
This test case requires not just daemon >= 1.40, but also
client API >= 1.40. In case older client is used, we'll
get failure from the very first check:
> ipcmode_linux_test.go:313: assertion failed: shareable (string) != private (string)
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Older versions of the daemon would concatenate hostname and
domainname, so hostname "foobar" and domainname "baz.cyphar.com"
would produce `foobar.baz.cyphar.com` as hostname.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Allow specifying environment variables when installing an engine plugin
as a Swarm service. Invalid environment variable entries (without an
equals (`=`) char) will be ignored.
Signed-off-by: Sune Keller <absukl@almbrand.dk>
pborman/uuid and google/uuid used to be different versions of
the same package, but now pborman/uuid is a compatibility wrapper
around google/uuid, maintained by the same person.
Clean up some of the usage as the functions differ slightly.
Not yet removed some uses of pborman/uuid in vendored code but
I have PRs in process for these.
Signed-off-by: Justin Cormack <justin.cormack@docker.com>
When copying between stages, or copying from an image,
ownership of the copied files should not be changed, unless
the `--chown` option is set (in which case ownership of copied
files should be updated to the specified user/group).
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Create a new container for each subtest, so that individual
subtests are self-contained, and there's no need to execute
them in the exact order, or resetting the container in between.
This makes the test slower (6.54s vs 3.43s), but reduced the
difference by using `network=host`, which made a substantial
difference (without `network=host`, the test took more than
twice as long: 13.96s).
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
- Don't set `PidsLimit` when creating a container and
no limit was set (or the limit was set to "unlimited")
- Don't set `PidsLimit` if the host does not have pids-limit
support (previously "unlimited" was set).
- Do not generate a warning if the host does not have pids-limit
support, but pids-limit was set to unlimited (having no
limit set, or the limit set to "unlimited" is equivalent,
so no warning is nescessary in that case).
- When updating a container, convert `0`, and `-1` to
"unlimited" (`0`).
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This changes the default ipc mode of daemon/engine to be private,
meaning the containers will not have their /dev/shm bind-mounted
from the host by default. The benefits of doing this are:
1. No leaked mounts. Eliminate a possibility to leak mounts into
other namespaces (and therefore unfortunate errors like "Unable to
remove filesystem for <ID>: remove /var/lib/docker/containers/<ID>/shm:
device or resource busy").
2. Working checkpoint/restore. Make `docker checkpoint`
not lose the contents of `/dev/shm`, but save it to
the dump, and be restored back upon `docker start --checkpoint`
(currently it is lost -- while CRIU handles tmpfs mounts,
the "shareable" mount is seen as external to container,
and thus rightfully ignored).
3. Better security. Currently any container is opened to share
its /dev/shm with any other container.
Obviously, this change will break the following usage scenario:
$ docker run -d --name donor busybox top
$ docker run --rm -it --ipc container:donor busybox sh
Error response from daemon: linux spec namespaces: can't join IPC
of container <ID>: non-shareable IPC (hint: use IpcMode:shareable
for the donor container)
The soution, as hinted by the (amended) error message, is to
explicitly enable donor sharing by using --ipc shareable:
$ docker run -d --name donor --ipc shareable busybox top
Compatibility notes:
1. This only applies to containers created _after_ this change.
Existing containers are not affected and will work fine
as their ipc mode is stored in HostConfig.
2. Old backward compatible behavior ("shareable" containers
by default) can be enabled by either using
`--default-ipc-mode shareable` daemon command line option,
or by adding a `"default-ipc-mode": "shareable"`
line in `/etc/docker/daemon.json` configuration file.
3. If an older client (API < 1.40) is used, a "shareable" container
is created. A test to check that is added.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Move the test case from integration-cli to integration.
The test logic itself has not changed, except these
two things:
* the new test sets default-ipc-mode via command line
rather than via daemon.json (less code);
* the new test uses current API version.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Since container.Create() already initializes HostConfig
to be non-nil, there is no need for this code. Remove it.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
