connectivity_check.markdown

title	description
Connectivity check	More information on why disabling Network Manager's connectivity check marks the installation as unsupported.

The issue

Home Assistant needs to know when it has a stable network connection in order to disable functionality which requires that. Without this check you will face an increased number of errors and performance issues due to connection timeouts.

The solution

From the host shell, first execute the following:

busctl get-property org.freedesktop.NetworkManager /org/freedesktop/NetworkManager org.freedesktop.NetworkManager ConnectivityCheckAvailable

Output is b true

You just need to re-enable connectivity checks by executing this command:

busctl set-property org.freedesktop.NetworkManager /org/freedesktop/NetworkManager org.freedesktop.NetworkManager ConnectivityCheckEnabled b true

It may take a bit for the message to go away as all checks are scheduled on timers. You can force it to recheck immediately by executing the following commands:

ha host reload
ha resolution healthcheck

Output is b false

You need to set the connectivity uri in Network Manager's config. You can do this by adding the following to /etc/NetworkManager/NetworkManager.conf:

[connectivity]
uri=http://checkonline.home-assistant.io/online.txt
interval=600

Afterwards you will need to restart NetworkManager by either rebooting the host or executing this command:

systemctl restart NetworkManager

As mentioned above, the checks are on timers so the message may not go away immediately unless you force an immediate re-check. If you continue to see the message after a while or after forcing a re-check then start over at the top of this solution. You may need to separately enable the check now that it is available.