Werk #14469: Notification spooler: Fix possible ConnectionRefusedError after update to 2.0

Component Notifications
Title Notification spooler: Fix possible ConnectionRefusedError after update to 2.0
Date Aug 15, 2022
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.0.0p28 Checkmk Enterprise (CEE), Checkmk MSP (CME)

If the notification spooler configuration was made via "Distributed monitoring" - "Site specific global configuration" for central sites in versions before 2.0, the start of the mknotifyd daemon could fail with an error like "ConnectionRefusedError: [Errno 111] Connection refused".

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