As recommended by https://www.confluent.io/blog/apache-kafka-for-service-architectures/

solsson · solsson · commit c86ed9c92ae8 · 2017-07-25T07:02:11.000+02:00
diff --git a/test/12topic-create-test2.yml b/test/12topic-create-test2.yml
@@ -22,4 +22,6 @@ spec:
         - "1"
         - --replication-factor
         - "3"
+        - --config
+        - min.insync.replicas=2
       restartPolicy: Never
