You may want to take selected logs from OpenWrt and send them to an MQTT server. This can be done with a bit of scripting.
Bernie has the bead on this one gist.github.com/mbernson/78e53b26d3c68f997493
Discussed Here forum.openwrt.org/t/acting-on-events-from-uci-pushing-dhcp-information-to-an-external-host/173141/5
More on ujail forum.openwrt.org/t/ujail-allowing-additional-processes-libraries-and-paths/173773
Bernie has the bead on this one gist.github.com/mbernson/78e53b26d3c68f997493
Discussed Here forum.openwrt.org/t/acting-on-events-from-uci-pushing-dhcp-information-to-an-external-host/173141/5
More on ujail forum.openwrt.org/t/ujail-allowing-additional-processes-libraries-and-paths/173773