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    A New Chapter for MagicMirror: The Community Takes the Lead
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    MQTT server is offline

    Scheduled Pinned Locked Moved Solved Troubleshooting
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    • M Offline
      matt216
      last edited by matt216

      Hi there.
      I am using an ESP8266 board as a door-sensor which publishes messages to my adafruit IO feed. I am then using the MMM-mqtt module by @javiergayala to subscibe to the feed and show if my door is open or closed.
      This all works fine for a short time, but then I get a notification on the mirror that the “MQTT server is offline” and the module fails to receive any new published messages.
      The adafruit feed is being updated fine when my garage door is opened/closed.
      The only thing I can see in adafruit’s monitor screen is:

      2020/11/15 10:20:51AM  mqttjs_aaeacdcb  disconnected
      

      And I can’t see anything in mm logs:

      pi@mirror:~/MagicMirror/config $ tail -1000 ~/.pm2/logs/mm-out.log | grep mqtt
      [2020-11-15 10:11:54.078] [LOG]    MMM-mqtt started ...
      [2020-11-15 10:12:07.819] [LOG]    Creating new MQTT client for url:  mqtts://*adafruit...*
      [2020-11-15 10:12:08.106] [INFO]   Checking git for module: MMM-mqtt
      

      Any ideas on what’s happening, or where I can look for a steer on what’s happening? The sensor and adafruit feed look to be working fine, just the mirror is disconnecting.
      Thanks.

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      • M Offline
        matt216
        last edited by

        Also, very occasionally, get the notification:
        “MQTT Error. The MQTT client has suffered an error: Error: getaddrinfo EAI_AGAIN io.adafruit.com”

        Would appreciate a steer in the direction of any logs I can dig in to.

        Thanks

        S 1 Reply Last reply Reply Quote 0
        • S Offline
          sdetweil @matt216
          last edited by

          @matt216 eai_again in a name server problem. See that a lot when people are using advert filters like Pinole, or have unstable internet

          Sam

          How to add modules

          learning how to use browser developers window for css changes

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          • M Offline
            matt216
            last edited by matt216

            Thanks @sdetweil . I do indeed have Pihole running on my network. Yesterday I observed the “MQTT offline” mirror notification exactly at the same time as a (successful) A and AAAA request from the mirror for the MQTT server URL.
            Today, however, the notification appeared but there is no corresponding DNS request from the mirror.
            This is the first module (and only device on my network) that struggles… not convinced it is DNS related.
            Appreciate the help.

            S 1 Reply Last reply Reply Quote 0
            • S Offline
              sdetweil @matt216
              last edited by

              @matt216 the error is dns failure

              Sam

              How to add modules

              learning how to use browser developers window for css changes

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              • M Offline
                matt216
                last edited by matt216

                I can ‘force’ this error by turning off the nearest wifi access point that the mirror uses on my home network. Although the mirror associates with another AP the connection to the MQTT server is broken and will not re-establish.
                This error only occurs occasionally, usually, which would make sense as the nearest access point is… ‘flaky’, shall we say (it’s a powerline adaptor type).
                I am going to specify a certain (reliable) AP for the mirror to connect to. Otherwise I may try a different ssid for the second AP (keen to avoid this, though).
                Thanks for help so far.

                S 1 Reply Last reply Reply Quote 0
                • S Offline
                  sdetweil @matt216
                  last edited by

                  @matt216 i M glad that you were able to recreate and have a plan to resolve.

                  I had a similar problem w my wifi security cams and an mm system.

                  Finally replaced the networking w a Google wifi system, where I could put one of the stations in a location to resolve the connection issues.

                  Sam

                  How to add modules

                  learning how to use browser developers window for css changes

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                  • M Offline
                    matt216
                    last edited by

                    Little update… upgraded the ‘flaky’ hotspot and ran an ethernet cable to it, rather than use powerline adapters. The mirror has held connection to the queue for 3 days now, which is by far a record!
                    Network connectivity seemed to be the issue, prompting a DNS error. Curious if the module could be a bit more resilient but perhaps that’s the nature of MQTT…? Decent home network has resolved.
                    Thanks for assistance.

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                    • S Offline
                      sdetweil @matt216
                      last edited by

                      @matt216 the code could be made more resilient, but maybe lower down than module, which module author doesn’t control.

                      Its hard to make 100% reliable code.

                      Glad u resolved to issue

                      Sam

                      How to add modules

                      learning how to use browser developers window for css changes

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