prometheus: Add silentct_need_restart

1 files changed, 11 insertions, 0 deletions

diff --git a/docs/metrics.md b/docs/metrics.md
index b2b3445..6fa12c1 100644
--- a/docs/metrics.md
+++ b/docs/metrics.md
@@ -54,3 +54,14 @@ silentct_error_counter 0
 ```
 
 Do not use for alerting, this metric is too noisy and currently used for debug.
+
+## `"silentct_need_restart"`
+
+```
+# HELP silentct_need_restart A non-zero value if the monitor needs restarting.
+# TYPE silentct_need_restart gauge
+silentct_need_restart 0
+```
+
+Restarts are normally not needed; but here's a metric until the `silentct-mon`
+implementation can assure that all corner-cases are handled without restarts.