Handle containerd "CRIU not found" error message

During the PR to get "Forensic Container Checkpointing" enabled in
containerd the decision was made to not correctly report if containerd
cannot find the CRIU binary. The reason was that the e2e_node checkpoint
test did not understand the error message.

The e2e_node checkpoint test is skipped if the container runtime (CRI-O
or containerd) does not enable checkpoint support of if checkpoint
support is not implemented.

This commit adds another reason to skip a check. If the underlying OS
which is used to test "Forensic Container Checkpointing" in combination
with containerd or CRI-O is missing the CRIU binary.

This was encountered on Google's Container-Optimized OS (COS) based
tests where CRIU was not installed.

With this change merged it is possible for containerd to return the
correct error message without breaking Kubernetes e2e tests.

Signed-off-by: Adrian Reber <[email protected]>

Author: adrianreber

test/e2e_node/checkpoint_container.go

@@ -217,6 +217,9 @@ var _ = SIGDescribe("Checkpoint Container", nodefeature.CheckpointContainer, fun
 			// or
 			// '(rpc error: code = Unknown desc = checkpoint/restore support not available)'
 			// if the container engine explicitly disabled the checkpoint/restore support
+			// or
+			// '(rpc error: code = Unknown desc = CRIU binary not found or too old (<31600). Failed to checkpoint container'
+			// if the CRIU binary was not found if it is too old
 			if (int(statusError.ErrStatus.Code)) == http.StatusInternalServerError {
 				if strings.Contains(
 					statusError.ErrStatus.Message,
@@ -239,6 +242,13 @@ var _ = SIGDescribe("Checkpoint Container", nodefeature.CheckpointContainer, fun
 					ginkgo.Skip("Container engine does not implement 'CheckpointContainer'")
 					return
 				}
+				if strings.Contains(
+					statusError.ErrStatus.Message,
+					"(rpc error: code = Unknown desc = CRIU binary not found or too old (<31600). Failed to checkpoint container",
+				) {
+					ginkgo.Skip("Container engine reports missing or too old CRIU binary")
+					return
+				}
 			}
 			framework.Failf(
 				"Unexpected status code (%d) during 'CheckpointContainer': %q",