generate systemd: `--replace` on named containers/pods

Use `--replace` for named containers and pods.  This will clean up
previous containers and podsthat may not have been removed after a
system crash.

Fixes: #5485
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

1 files changed, 16 insertions, 1 deletions

diff --git a/pkg/systemd/generate/pods.go b/pkg/systemd/generate/pods.go
index 5cfd5ab0a..367b8381f 100644
--- a/pkg/systemd/generate/pods.go
+++ b/pkg/systemd/generate/pods.go
@@ -265,7 +265,7 @@ func executePodTemplate(info *podInfo, options entities.GenerateSystemdOptions)
 			if podCreateIndex == 0 {
 				return "", errors.Errorf("pod does not appear to be created via `podman pod create`: %v", info.CreateCommand)
 			}
-			podRootArgs = info.CreateCommand[1 : podCreateIndex-2]
+			podRootArgs = info.CreateCommand[0 : podCreateIndex-2]
 			podCreateArgs = filterPodFlags(info.CreateCommand[podCreateIndex+1:])
 		}
 		// We're hard-coding the first five arguments and append the
@@ -277,6 +277,21 @@ func executePodTemplate(info *podInfo, options entities.GenerateSystemdOptions)
 				"--infra-conmon-pidfile", "{{.PIDFile}}",
 				"--pod-id-file", "{{.PodIDFile}}"}...)
 
+		// Presence check for certain flags/options.
+		hasNameParam := false
+		hasReplaceParam := false
+		for _, p := range podCreateArgs {
+			switch p {
+			case "--name":
+				hasNameParam = true
+			case "--replace":
+				hasReplaceParam = true
+			}
+		}
+		if hasNameParam && !hasReplaceParam {
+			podCreateArgs = append(podCreateArgs, "--replace")
+		}
+
 		startCommand = append(startCommand, podCreateArgs...)
 
 		info.ExecStartPre1 = "/usr/bin/rm -f {{.PIDFile}} {{.PodIDFile}}"