Checkmk Werk 13214: real-time-checks: systemd compatibility

ID: 13214 Title: real-time-checks: systemd compatibility Component: Checks & agents Level: 1 Class: Bug fix Version: 2.1.0i1 The previous approach of the RTC feature did not work with systemd. This werk changes the way real time data transmission is triggered, such that thay work with systemd.