If one source fails, continue to the next source instead of bailing

source/multisource.go

@@ -19,6 +19,7 @@ package source
 import (
 	"context"
 
+	log "github.com/sirupsen/logrus"
 	"sigs.k8s.io/external-dns/endpoint"
 )
 
@@ -35,7 +36,8 @@ func (ms *multiSource) Endpoints(ctx context.Context) ([]*endpoint.Endpoint, err
 	for _, s := range ms.children {
 		endpoints, err := s.Endpoints(ctx)
 		if err != nil {
-			return nil, err
+			log.Errorf("failed to collect endpoints for source %T: %v", s, err)
+			continue
 		}
 		if len(ms.defaultTargets) > 0 {
 			for i := range endpoints {