Merge pull request #22460 from bluca/monitor_refactor

core: split $MONITOR_METADATA and return it only if a single unit triggers OnFailure/OnSuccess
2022-03-10 18:34:20 +01:00
parent a8c5363ba9 a257c941ad
commit 69a21030b1
12 changed files with 342 additions and 387 deletions
@@ -21,6 +21,14 @@ CHANGES WITH 251:
          for breaking backward compatibility instead, as nobody should be
          affected, given the state of the current interface.

+        * Service monitor environment variables will only be passed to OnFailure=/OnSuccess=
+          handlers if exactly one unit lists the handler unit as OnFailure=/OnSuccess=.
+          Therefore, $MONITOR_METADATA is no longer used, and instead separate
+          variables are used: $MONITOR_SERVICE_RESULT, $MONITOR_EXIT_CODE,
+          $MONITOR_EXIT_STATUS, $MONITOR_INVOCATION_ID and $MONITOR_UNIT.
+          For cases when a single handler needs to watch multiple units, use a
+          templated handler.
+
        * Services with Restart=always and a failing ExecCondition= will no longer
          be restarted, to bring ExecCondition= in line with Condition*= settings.