A slightly tweaked macosx agent compared to the official one. As of 1.7.0i1 this agent has the following improvements:

• reports macOS version (e.g. 10.16 (20A4299v))

• reports correct size of APFS volumes

• filters out temporarely appearing filesystems

• reports compressed memory as swap

• reports network statistics somewhat correctly

• runs ntp check only on macOS 10.12 and below since broken with newer macOS releases

• runs timemachine check only on macOS 10.13 and below since broken with newer macOS releases

• reports thermal sensors if HardwareMonitor is available

• reports CPU temperature if osx-cpu-temp is available

• reports SMART health data and disk temperatures if smartctl is available (brew install smartmontools)

• reports outstanding security updates

• reports a warning if security updates require a reboot

• bundled with a LaunchDaemon that needs to be loaded as below (if you want more fine grained control who can access the agent's output see here for example):

  launchctl load -w /Library/LaunchDaemons/de.mathias-kettner.check_mk.plist

It looks like this with an old MacPro having plenty of hardware sensors, running with available HardwareMonitor.app and macOS prior to 10.15:

• Active users of Helios EtherShare/PCShare, Samba, Netatalk, macOS server, Filemaker
• Canonical Livepatch
• City temperatures via openweathermap.org
• Expiring Helios WebShare user accounts
• Expiring Julia Mailoffice certificates
• Invalid logins for Kerio Connect
• Kerio Connect
• Outstanding macOS updates with JAMF Pro
• Reboot needed on Linux?
• Filemaker server on macOS or Linux
• SMART for ODROID HC2 and other JMS578 devices
• TimeMachine client based on Netatalk
• Znapzend / ZFS snapshot age