Checkmk Werk 15235: Missing agent sections in rare upgrade scenario

ID: 15235 Title: Missing agent sections in rare upgrade scenario Component: Checks & agents Level: 1 Class: Bug fix Version: 2.2.0i1 This fixes missing agent sections when users upgrade from a <b>1.6.0 systemd</b> Checkmk agent package to a <b>2.0.0 xinetd</b> package. Since from 1.6.0 to 2.0.0 we changed the default network service <b>from xinetd to systemd</b>, this is a very rare scenario. In case it did happen the systemd socket was not stopped during the upgrade, preventing the xinetd service from binding to the port. This resulted in a partially working monitoring (as the systemd socked <i>was</i> running). However, services using chached data would go to stale (e.g. <i>"NTP Time"</i>) and the agent updater would no longer be triggered.