journald: remove old logs from disk. (#490)

fix #486

CHANGELOG.md

@@ -5,6 +5,9 @@
 - cmdeploy dns: offer alternative DKIM record format for some web interfaces
   ([#470](https://github.com/deltachat/chatmail/pull/470))
 
+- journald: remove old logs from disk
+  ([#490](https://github.com/deltachat/chatmail/pull/490))
+
 - migration guide: let opendkim own the DKIM keys directory
   ([#468](https://github.com/deltachat/chatmail/pull/468))
 

cmdeploy/src/cmdeploy/__init__.py

@@ -705,6 +705,11 @@ def deploy_chatmail(config_path: Path, disable_mail: bool) -> None:
         enabled=True,
         restarted=journald_conf.changed,
     )
+    files.directory(
+        name="Ensure old logs on disk are deleted",
+        path="/var/log/journal/",
+        present=False,
+    )
 
     apt.packages(
         name="Ensure cron is installed",