Since 2 days - on every reboot I am getting the following error:
2021-04-18 17:39:00 DNSMASQ_CONFIG FTL failed to start due to unknown interface eth0
Details about my system:
Raspberry Pi 4 running ubuntu 20.04 with NGINX for serving multiple sub-domains
What I have changed since installing Pi-hole:
I am just updating the standard ubuntu packages as well as the pihole. currently I am on:
Pi-hole v5.3.1 Web Interface v5.5 FTL v5.8
The error is correctable after I run the following command:
systemctl restart pihole-FTL.service
Either you don't have an eth0 or it's not UP/UP when pihole-FTL is started.
Solutions are to either use the correct interface name, might be something like enps0... or delay the startup of pihole-FTL with Configuration - Pi-hole documentation
Thank you for the quick and explanatory answer! Indeed a delay in starting up the pihole-FTL will help - I already applied such workaround using crontab:
Thank you for pointing out the logical way of doing it. The eth0 is correct - I do have such interface, but apparently it is starting a bit later due to some ubuntu updates - this is the only reason I can think of, as my configuration runs unchanged for almost a year now without any issues.
Or there is a missing dependency for pihole-FTL.service
