Merge "Log db sync failures during retry" into main

ops-sunbeam/ops_sunbeam/charm.py

@@ -675,8 +675,12 @@ class OSBaseOperatorCharmK8S(OSBaseOperatorCharm):
     def _retry_db_sync(self, cmd):
         container = self.unit.get_container(self.db_sync_container_name)
         logging.debug("Running sync: \n%s", cmd)
+        try:
             process = container.exec(cmd, timeout=5 * 60)
             out, err = process.wait_output()
+        except ops.pebble.ExecError as e:
+            logger.warning(f"DB Sync pebble exec error: {str(e)}")
+            raise e
         if err:
             for line in err.splitlines():
                 logger.warning("DB Sync stderr: %s", line.strip())