Emit event when scheduling daemon fails

Restoring the code which was removed in 528bf7af. When there are no sufficient resources on node or there is a conflicting host port event is emited. It helps with debugging. Fixes #31369

Emit event when scheduling daemon fails
0d7371fd · Łukasz Oleś · 33ebe1f1 · 0d7371fd
Commit 0d7371fd authored Oct 24, 2016 by Łukasz Oleś
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daemoncontroller.go pkg/controller/daemon/daemoncontroller.go +8 -0

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--- a/pkg/controller/daemon/daemoncontroller.go
+++ b/pkg/controller/daemon/daemoncontroller.go
@@ -687,6 +687,14 @@ func (dsc *DaemonSetsController) nodeShouldRunDaemonPod(node *api.Node, ds *exte
 	}
 	for _, r := range reasons {
 		glog.V(4).Infof("GeneralPredicates failed on ds '%s/%s' for reason: %v", ds.ObjectMeta.Namespace, ds.ObjectMeta.Name, r.GetReason())
+		switch reason := r.(type) {
+		case *predicates.InsufficientResourceError:
+			dsc.eventRecorder.Eventf(ds, api.EventTypeNormal, "FailedPlacement", "failed to place pod on %q: %s", node.ObjectMeta.Name, reason.Error())
+		case *predicates.PredicateFailureError:
+			if reason == predicates.ErrPodNotFitsHostPorts {
+				dsc.eventRecorder.Eventf(ds, api.EventTypeNormal, "FailedPlacement", "failed to place pod on %q: host port conflict", node.ObjectMeta.Name)
+			}
+		}
 	}
 	return fit
 }