Avoid problem with rule mysqld service as a linked unit on finishing …

…stage

pleskdistup/actions/systemd.py

@@ -91,7 +91,6 @@ def __init__(self) -> None:
             "httpd.service",
             "mailman.service",
             "mariadb.service",
-            "mysqld.service",
             "named-chroot.service",
             "plesk-ext-monitoring-hcd.service",
             "plesk-ssh-terminal.service",
@@ -111,6 +110,11 @@ def __init__(self) -> None:
             "plesk-ip-remapping.service",
         ]
 
+        # Once MariaDB has started, systemctl will not be able to control mysqld as a linked unit.
+        # Therefore, we should manage mysqld separately and only if MariaDB is not present
+        if "mariadb.service" not in self.plesk_systemd_services and systemd.is_service_startable("mysqld.service"):
+            self.plesk_systemd_services.append("mysqld.service")
+
         # We don't remove postfix service when remove it during qmail installation
         # so we should choose the right smtp service, otherwise they will conflict
         if systemd.is_service_startable("qmail.service"):