There are no logs available in the app, but there's quite a lot available from the diagnostic report API. It's in protobuf format, so someone wrote a handy little parser.
go get github.com/benmanns/onhub/cmd/onhubdump ~/go/bin/onhubdump http://192.168.86.1/api/v1/diagnostic-report > logs.json $ jq 'keys' logs.json [ "commandOutputs", "fileLengths", "files", "networkConfig", "stormVersion", "unixTime", "unknown1", "unknownPairs", "version", "wanInfo", "whirlwindVersion" ] $ jq -r '.files[].path' logs.json /etc/lsb-release /etc/resolv.conf /proc/net/arp /proc/slabinfo /proc/meminfo /sys/firmware/log /var/log/debug-log/debug-log /var/log/boot.log /var/log/net.log /var/log/update_engine/update_engine.20200102-000001 /var/log/update_engine/update_engine.20190102-000001 /var/lib/ap/monitor/wan_idle_usage /var/lib/ap/monitor/child_idle_usage /var/lib/ap/health-monitor/wan_connectivity_history /var/log/ap_fresh_dns_messages /var/log/ap_https_server_messages /var/log/critical_events.log /var/log/messages # Get /var/log/messages content: $ jq -r '.files[17].content' logs.json | less