Document that `ca list` is not an inventory, add cleanup cycle

(cherry picked from commit 870de6a35d48136e2a393b8b975bd365dd602909)

diff --git a/doc/06-distributed-monitoring.md b/doc/06-distributed-monitoring.md
index b2a00ee10cadaa1930580965b72059e4bb501ced..60a8c4737080c3297ffdf2b60de637ff5ee08159 100644 (file)
--- a/doc/06-distributed-monitoring.md
+++ b/doc/06-distributed-monitoring.md
@@ -438,6 +438,11 @@ and pass its fingerprint as argument.
 information/cli: Signed certificate for 'CN = icinga2-client2.localdomain'.
 ```
 
+> **Note**
+>
+> `ca list` cannot be used as historical inventory. Certificate
+> signing requests older than 1 week are automatically deleted.
+
 ## Client/Satellite Setup <a id="distributed-monitoring-setup-satellite-client"></a>
 
 This section describes the setup of a satellite and/or client connected to an