Add Elasticsearch page with compatibility information
Currently it is difficult to figure out which versions of Elasticsearch
are supported in which versions of Gerrit.
Create a page with a simple table that shows the compatible versions.
Change-Id: Icda0c427e2cfd2142be79ef6fcdeec9da1e28ec3
diff --git a/pages/site/elasticsearch.md b/pages/site/elasticsearch.md
new file mode 100644
index 0000000..53dbdb5
--- /dev/null
+++ b/pages/site/elasticsearch.md
@@ -0,0 +1,21 @@
+---
+title: "Elasticsearch"
+permalink: elasticsearch.html
+hide_sidebar: true
+hide_navtoggle: true
+toc: false
+---
+
+The following table shows the compatibility of Gerrit Code Review with Elasticsearch.
+
+
+| Elasticsearch Version | Minimum Gerrit Version |
+|-----------------------|------------------------|
+| 2.4.x | 2.14.8 or 2.15.3 |
+| 5.6.x | 2.14.8 or 2.15.3 |
+| 6.2.x | 2.14.8 or 2.15.3 |
+| 6.3.x | 2.14.10 or 2.15.3 |
+| 6.4.x | 2.14.12 |
+
+Note that although Elasticsearch 2.4.x is supported, we do not recommend using
+such an old version.
