As of April 1, Docker Hub rate limits tightened. With only 10 pulls/hr/IP, we're
likely to encounter test failures. Switch all Docker images getting pulled from
this repository to use the HashiCorp managed registry mirror.
Note that most of our tests in `drivers/docker` don't pull from the remote
registry but load a local image, while others will need to pull from the remote
and fetch different images depending on OS/arch. Refactor the definition of test
task configuration to make it clear which is which, and de-factor some false
sharing of setup functions.
Updates the E2E tests to use that registry by configuring the Docker
daemon. This required changing out a few container images that we don't have in
the registry, but these new images are all smaller. There are a couple of tests
that still use explicitly-tagged `docker.io` images or other third-party
registries, which have been left in place.
Ref: https://hashicorp.atlassian.net/browse/NET-12233
update E2E images to those in the registry mirror
fix windows and docklog test build
fix stopsignal test
mop-up
more mop-up
This PR replaces fsouza/go-dockerclient 3rd party docker client library with
docker's official SDK.
---------
Co-authored-by: Tim Gross <tgross@hashicorp.com>
Co-authored-by: Seth Hoenig <shoenig@duck.com>
No functional changes, just cleaning up deprecated usages that are
removed in v2 and replace one call of .Slice with .ForEach to avoid
making the intermediate copy.
* "allow" (don't try to drop) linux capabilities
in the docker test driver harness (see #15181)
* refactor to allow different busybox images
since windows containers need to be the same
version as the underlying OS, and we're
moving from 2016 to 2019
* one docker test was flaky from apparently
being a bit slower on windows, so add Wait()
This PR introduces support for using Nomad on systems with cgroups v2 [1]
enabled as the cgroups controller mounted on /sys/fs/cgroups. Newer Linux
distros like Ubuntu 21.10 are shipping with cgroups v2 only, causing problems
for Nomad users.
Nomad mostly "just works" with cgroups v2 due to the indirection via libcontainer,
but not so for managing cpuset cgroups. Before, Nomad has been making use of
a feature in v1 where a PID could be a member of more than one cgroup. In v2
this is no longer possible, and so the logic around computing cpuset values
must be modified. When Nomad detects v2, it manages cpuset values in-process,
rather than making use of cgroup heirarchy inheritence via shared/reserved
parents.
Nomad will only activate the v2 logic when it detects cgroups2 is mounted at
/sys/fs/cgroups. This means on systems running in hybrid mode with cgroups2
mounted at /sys/fs/cgroups/unified (as is typical) Nomad will continue to
use the v1 logic, and should operate as before. Systems that do not support
cgroups v2 are also not affected.
When v2 is activated, Nomad will create a parent called nomad.slice (unless
otherwise configured in Client conifg), and create cgroups for tasks using
naming convention <allocID>-<task>.scope. These follow the naming convention
set by systemd and also used by Docker when cgroups v2 is detected.
Client nodes now export a new fingerprint attribute, unique.cgroups.version
which will be set to 'v1' or 'v2' to indicate the cgroups regime in use by
Nomad.
The new cpuset management strategy fixes#11705, where docker tasks that
spawned processes on startup would "leak". In cgroups v2, the PIDs are
started in the cgroup they will always live in, and thus the cause of
the leak is eliminated.
[1] https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.htmlCloses#11289Fixes#11705#11773#11933
