package system import ( "context" "os" "testing" "github.com/docker/docker/api/types" "github.com/docker/docker/integration/internal/container" "github.com/docker/docker/internal/test/daemon" "gotest.tools/assert" ) // hasSystemd checks whether the host was booted with systemd as its init // system. Stolen from // https://github.com/coreos/go-systemd/blob/176f85496f4e/util/util.go#L68 func hasSystemd() bool { fi, err := os.Lstat("/run/systemd/system") if err != nil { return false } return fi.IsDir() } // TestCgroupDriverSystemdMemoryLimit checks that container // memory limit can be set when using systemd cgroupdriver. // https://github.com/moby/moby/issues/35123 func TestCgroupDriverSystemdMemoryLimit(t *testing.T) { t.Parallel() if !hasSystemd() { t.Skip("systemd not available") } d := daemon.New(t) client, err := d.NewClient() assert.NilError(t, err) d.StartWithBusybox(t, "--exec-opt", "native.cgroupdriver=systemd", "--iptables=false") defer d.Stop(t) const mem = 64 * 1024 * 1024 // 64 MB ctx := context.Background() ctrID := container.Create(t, ctx, client, func(c *container.TestContainerConfig) { c.HostConfig.Resources.Memory = mem }) defer client.ContainerRemove(ctx, ctrID, types.ContainerRemoveOptions{Force: true}) err = client.ContainerStart(ctx, ctrID, types.ContainerStartOptions{}) assert.NilError(t, err) s, err := client.ContainerInspect(ctx, ctrID) assert.NilError(t, err) assert.Equal(t, s.HostConfig.Memory, mem) }