Domoticz

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2022-12-16 19:25:24.839 Status: MQTT: Worker stopped...
2022-12-16 19:25:25.851 Status: MQTT: Connecting to 192.168.2.21:1883
2022-12-16 19:25:25.851 Error: MQTT: Failed to start, return code: 14/Connection refused (Check IP/Port)

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systemctl status mosquitto.service
* mosquitto.service - Mosquitto MQTT Broker
     Loaded: loaded (/lib/systemd/system/mosquitto.service; enabled; vendor preset: enabled)
     Active: failed (Result: exit-code) since Fri 2022-12-16 19:27:19 CET; 1min 45s ago
       Docs: man:mosquitto.conf(5)
             man:mosquitto(8)
    Process: 2792 ExecStartPre=/bin/mkdir -m 740 -p /var/log/mosquitto (code=exited, status=0/SUCCESS)
    Process: 2793 ExecStartPre=/bin/chown mosquitto /var/log/mosquitto (code=exited, status=0/SUCCESS)
    Process: 2794 ExecStartPre=/bin/mkdir -m 740 -p /run/mosquitto (code=exited, status=0/SUCCESS)
    Process: 2795 ExecStartPre=/bin/chown mosquitto /run/mosquitto (code=exited, status=0/SUCCESS)
    Process: 2796 ExecStart=/usr/sbin/mosquitto -c /etc/mosquitto/mosquitto.conf (code=exited, status=1/FAILURE)
   Main PID: 2796 (code=exited, status=1/FAILURE)
        CPU: 95ms

dec 16 19:27:19 PI4Nieuw systemd[1]: mosquitto.service: Failed with result 'exit-code'.
dec 16 19:27:19 PI4Nieuw systemd[1]: Failed to start Mosquitto MQTT Broker.
dec 16 19:27:19 PI4Nieuw systemd[1]: mosquitto.service: Scheduled restart job, restart counter is at 5.
dec 16 19:27:19 PI4Nieuw systemd[1]: Stopped Mosquitto MQTT Broker.
dec 16 19:27:19 PI4Nieuw systemd[1]: mosquitto.service: Start request repeated too quickly.
dec 16 19:27:19 PI4Nieuw systemd[1]: mosquitto.service: Failed with result 'exit-code'.
dec 16 19:27:19 PI4Nieuw systemd[1]: Failed to start Mosquitto MQTT Broker.

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# Place your local configuration in /etc/mosquitto/conf.d/
#
# A full description of the configuration file is at
# /usr/share/doc/mosquitto/examples/mosquitto.conf.example

pid_file /run/mosquitto/mosquitto.pid

persistence true
persistence_location /var/lib/mosquitto/

log_dest file /var/log/mosquitto/mosquitto.log

include_dir /etc/mosquitto/conf.d
listener 1883
allow_anonymous true

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pi@server5:~ $ mosquitto -v
1671219391: mosquitto version 2.0.11 starting
1671219391: Using default config.
1671219391: Starting in local only mode. Connections will only be possible from clients running on this machine.
1671219391: Create a configuration file which defines a listener to allow remote access.
1671219391: For more details see https://mosquitto.org/documentation/authentication-methods/
1671219391: Opening ipv4 listen socket on port 1883.
1671219391: Error: Address already in use
1671219391: Opening ipv6 listen socket on port 1883.
1671219391: Error: Address already in use

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sudo netstat -anp | grep 1883