Chirpstack::chirpstack::integration::mqtt: MQTT error error=I/O: connection closed by peer

ChirpStack (v4)
1

I have Chirpstack V4 that ran well with the Dragino gateway DLOS08 for a year. However, after running “apt-get upgrade” to upgrade the nodeRed and nodeSJ, the chirpstack doesn’t work anymore. Chirpstack showed this error "ERROR chirpstack::gateway::backend::mqtt: MQTT error error=I/O: connection closed by peer

I decided to remove/purge the following: mosquitto \ mosquitto-clients \redis-server \redis-tools \PostgreSQL\chirpstack-gateway-bridge & Chirpstack
Then I reinstalled the Chipstack again (like from the crash).

After reinstalling, like before, I can see gateway data (using mosquitto-sub or check status with systemctl):
Apr 30 14:31:57 raspberrypi chirpstack-gateway-bridge[30698]: time=“2024-04-30T14:31:57.781092822-03:00” level=info msg=“integration/mqtt: publishing event” event=up qos=0 topic=us915_0/gateway/a84041ffff21c16c/event/up uplink_id=41318

But the chirpstack errors is still there:
Apr 30 14:23:15 raspberrypi chirpstack[2360]: 2024-04-30T17:23:15.676202Z ERROR chirpstack::gateway::backend::mqtt: MQTT error error=I/O: connection closed by peer

Apr 30 14:23:15 raspberrypi chirpstack[2360]: 2024-04-30T17:23:15.707854Z ERROR chirpstack::gateway::backend::mqtt: MQTT error error=I/O: connection closed by peer

Please help me with this issue.
Worse case, if I need to reinstall from the crash, what else I should remove.
(Note: This is a remote computer; I cannot reinstall the RasberryPiOS. It will lose the remote connection).
Thanks for your support.

2

Have you checked your gateway mqtt configuration in the ChirpStack config files?

3

Hi Brocaar, thank you for your reply.

Here is the MQTT configuration in the chirpstack.toml:
image

I used the same configuration setting for all other chirpstack systems (they have the same design), and all of them are running well except this one.
Thanks

4

hi @brocaar, is there anything that can help to find out the issue?

5

Assuming there is a MQTT broker running on the same host, you need to find out the reason why this is happening. The MQTT broker logs could be a good starting point to debug this further.

6

Thank you help.
Cause: Mosquitto v 1.5.7 is outdated
Solution: upgrade of mosquitto to version 2.0.12

7

That is quite an old version, v1.5.7 was released in 2019 :wink:

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