Update prometheus-frontend.md (#2492)

* Update prometheus-frontend.md I think if you are running the Cortex query frontend alone you basically always want to / need to configure the downstream_url. Therefore it should be part of the default config for this usecase. Signed-off-by: Felix Sperling <felix.sperling@idealo.de> * Clarified downstream_url in example Signed-off-by: Marco Pracucci <marco@pracucci.com> Signed-off-by: Felix Sperling <felix.sperling@idealo.de> Co-authored-by: Marco Pracucci <marco@pracucci.com>
cortexproject · Apr 24, 2020 · 37c358b · 37c358b
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diff --git a/docs/configuration/prometheus-frontend.md b/docs/configuration/prometheus-frontend.md
@@ -62,4 +62,7 @@ query_range:
 frontend:
   log_queries_longer_than: 1s
   compress_responses: true
+
+  # The Prometheus URL to which the query-frontend should connect to.
+  downstream_url: http://prometheus.mydomain.com
 ```
diff --git a/docs/configuration/prometheus-frontend.yml b/docs/configuration/prometheus-frontend.yml
@@ -54,3 +54,6 @@ query_range:
 frontend:
   log_queries_longer_than: 1s
   compress_responses: true
+
+  # The Prometheus URL to which the query-frontend should connect to.
+  downstream_url: http://prometheus.mydomain.com