service/prometheus.md

@@ -1067,6 +1067,7 @@ similar to the threshold. Note the priority of operators here requires
 putting the `60*60` tick in parenthesis.
 
 The `DiskWillFillSoon` alert does a [linear regression][] to try to
+
 predict if a disk will fill in less than 24h:
 
       (node_filesystem_readonly != 1)
@@ -1093,6 +1094,14 @@ space left, to avoid warning about normal write spikes.
 
 # How-to
 
+## Accessing the web interface
+
+Access to prometheus is granted in the same way as for grafana. To obtain access
+to the prometheus web interface and also to the karma alert dashboard, follow
+the instructions for [accessing grafana][]
+
+[accessing grafana]: howto/grafana#accessing-grafana
+
 ## Queries cheat sheet
 
 This section collects PromQL queries we find interesting.