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john30 / ebusd

daemon for communication with eBUS heating systems
GNU General Public License v3.0
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MQTT weird behaviour #222

Closed Dinth closed 5 years ago

Dinth commented 5 years ago

I noticed a weird behaviour in ebusd, if the ebusd daemon goes online sooner than MQTT server (Mosquitto). I've got a script which periodically sends "1" to #/get of all the variables im interested in. Normally this works perfectly fine, ebusd updates all the variables after receiving a message to #/get. But sometimes, if ebusd is switched on before Mosquitto server (it happens quite often after power failures in my setup, as RPi boots faster than a full fledged server), ebusd still speaks with MQTT (sends "uptime" updates, periodically a single variable gets updated), but doesnt react on messages sent to #/get to force variable update.

ebusd/global/uptime 92626
ebusd/global/uptime 92642
ebusd/bai/ReturnTemp/get 1
ebusd/bai/ReturnTempExternal/get 1
ebusd/bai/WaterPressure/get 1
ebusd/bai/FlowTemp/get 1
ebusd/bai/FlowTempDesired/get 1
ebusd/bai/HwcTemp/get 1
ebusd/bai/HwcTempMax/get 1
ebusd/bai/HwcWaterflowMax/get 1
ebusd/bai/PositionValveSet/get 1
ebusd/bai/PartloadHcKW/get 1
ebusd/bai/ModulationTempDesired/get 1
ebusd/bai/PumpPower/get 1
ebusd/global/uptime 92658
ebusd/global/uptime 92674
ebusd/global/uptime 92690

Im trying to troubleshoot this issue since when i noticed it yesterday, but it's not easy as every try requires "restart" of my whole house.

Dinth commented 5 years ago

Just used a different Mosquitto shocker container to be sure it’s not MQTT server issue, but I’m getting same results: 1) If Mosquitto server starts earlier than ebusd then everything works fine; 2) If ebusd starts earlier than Mosquitto server it still connects to it and publishes MQTT messages, but posting a message to ebusd/bai/variable/get doesn’t refresh the variable. When ebusd is restarted, everything goes back to normal

bo00 commented 5 years ago

I've a similar behaviour but independent to the starting time of Mosquitto. Polling ebusd through /get messages works good but after some time ebusd publishes global/running with value "false". Afterwards it continues publishing global/uptime and some single variables but doesn't answer to /get requests.

Versions: ebusd 3.2 mosquitto version 1.4.10

Dinth commented 5 years ago

I must add, that even when ebusd is not answering /get requests, i can ssh to ebusd, run "ebusctl read value" manually and then the updated value is published to MQTT instantly.