OSDOCS-5747:Added an additional resource

Author: ahardin-rh

scalability_and_performance/recommended-host-practices.adoc

@@ -44,6 +44,7 @@ include::modules/recommended-etcd-practices.adoc[leveloffset=+1]
 [role="_additional-resources"]
 .Additional resources
 * link:https://access.redhat.com/solutions/4885641[How to use `fio` to check etcd disk performance in {product-title}]
+* link:https://access.redhat.com/articles/6271341[etcd performance troubleshooting guide for {product-title}]
 
 include::modules/move-etcd-different-disk.adoc[leveloffset=+1]