From c9229e3c0bc9293d7e65dae2426faff55a541dfe Mon Sep 17 00:00:00 2001
From: Aliaksandr Valialkin <valyala@gmail.com>
Date: Mon, 24 May 2021 15:47:20 +0300
Subject: [PATCH] docs/vmalert.md: sync with app/vmalert/README.md via `make
 docs-sync`

---
 docs/vmalert.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/docs/vmalert.md b/docs/vmalert.md
index 23e5840c20..29c01cd716 100644
--- a/docs/vmalert.md
+++ b/docs/vmalert.md
@@ -89,6 +89,12 @@ name: <string>
 # By default "prometheus" rule type is used.
 [ type: <string> ]
 
+# Optional list of label filters applied to every rule's
+# request withing a group. Is compatible only with VM datasource.
+# See more details at https://docs.victoriametrics.com#prometheus-querying-api-enhancements
+extra_filter_labels:
+  [ <labelname>: <labelvalue> ... ]
+
 rules:
   [ - <rule> ... ]
 ```