Merge pull request #1200 from bbassie/feature/log-retention

Delete log files older than a configurable number of days

docs/configuration.md

@@ -48,6 +48,16 @@ Must be greater than 0.
 Defaults to 60.
 
 
+### controller.log_retention_days
+
+Number of days to keep the controller and cluster log files in the log directory for.
+Log files are named by the UTC date they were written and a file is deleted once its date is more than this many days in the past.
+Old files are checked for on startup and every hour after that.
+Set to 0 to keep logs forever.
+
+Defaults to 30.
+
+
 ### controller.host_pairing_timeout
 
 Time in seconds a host can wait for approval before its request expires, after which the host requests again with a new code.
@@ -436,6 +446,15 @@ Must be greater than 0.
 Defaults to 60.
 
 
+### host.log_retention_days
+
+Number of days to keep the host log files in the log directory for.
+Works the same way as controller.log_retention_days.
+Set to 0 to keep logs forever.
+
+Defaults to 30.
+
+
 ### host.allow_remote_updates
 
 Whether the `host update` command in clusterioctl and the update button in the web interface are allowed to update the `@clusterio/host` package with npm.