pod: add exit policies

Add the notion of an "exit policy" to a pod.  This policy controls the
behaviour when the last container of pod exits.  Initially, there are
two policies:

 - "continue" : the pod continues running. This is the default policy
                when creating a pod.

 - "stop" : stop the pod when the last container exits. This is the
            default behaviour for `play kube`.

In order to implement the deferred stop of a pod, add a worker queue to
the libpod runtime.  The queue will pick up work items and in this case
helps resolve dead locks that would otherwise occur if we attempted to
stop a pod during container cleanup.

Note that the default restart policy of `play kube` is "Always".  Hence,
in order to really solve #13464, the YAML files must set a custom
restart policy; the tests use "OnFailure".

Fixes: #13464
Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/pkg/domain/infra/abi/play.go b/pkg/domain/infra/abi/play.go
index 0da07bab8..b3ded7db6 100644
--- a/pkg/domain/infra/abi/play.go
+++ b/pkg/domain/infra/abi/play.go
@@ -197,7 +197,11 @@ func (ic *ContainerEngine) playKubePod(ctx context.Context, podName string, podY
 		return nil, errors.Errorf("pod does not have a name")
 	}
 
-	podOpt := entities.PodCreateOptions{Infra: true, Net: &entities.NetOptions{NoHosts: options.NoHosts}}
+	podOpt := entities.PodCreateOptions{
+		Infra:      true,
+		Net:        &entities.NetOptions{NoHosts: options.NoHosts},
+		ExitPolicy: string(config.PodExitPolicyStop),
+	}
 	podOpt, err = kube.ToPodOpt(ctx, podName, podOpt, podYAML)
 	if err != nil {
 		return nil, err