Error: Address already in use

[Ianszh]

Just updated to 2.0.9 though DietPi sys and now have an error and can no longer connect

1616235035: mosquitto version 2.0.9 starting 1616235035: Using default config. 1616235035: Starting in local only mode. Connections will only be possible from clients running on this machine. 1616235035: Create a configuration file which defines a listener to allow remote access. 1616235035: Opening ipv4 listen socket on port 1883. 1616235035: Error: Address already in use 1616235035: Opening ipv6 listen socket on port 1883. 1616235035: Error: Address already in use

[ralight]

It looks as though something else is already listening on port 1883. Can you confirm whether that is the case?

[ralight]

Note also the line Starting in local only mode. Connections will only be possible from clients running on this machine. - see https://mosquitto.org/documentation/authentication-methods/

[Ianszh]

Thanks, it was running fine before the update

this is my grep LISTEN

tcp LISTEN 0 100 127.0.0.1:26002 : users:(("nxnode.bin",pid=1281,fd=7)) tcp LISTEN 0 128 :22 : users:(("dropbear",pid=624,fd=3)) tcp LISTEN 0 128 :1880 : users:(("node-red",pid=5345,fd=21)) tcp LISTEN 0 128 127.0.0.1:8088 : users:(("influxd",pid=5354,fd=3)) tcp LISTEN 0 128 127.0.0.1:7002 : users:(("nxnode.bin",pid=1281,fd=19)) tcp LISTEN 0 100 127.0.0.1:1883 : users:(("mosquitto",pid=5337,fd=5)) tcp LISTEN 0 50 :445 : users:(("smbd",pid=5313,fd=32)) tcp LISTEN 0 100 :4000 : users:(("nxd",pid=807,fd=3)) tcp LISTEN 0 100 127.0.0.1:21024 : users:(("nxserver.bin",pid=481,fd=8)) tcp LISTEN 0 100 127.0.0.1:12002 : users:(("nxnode.bin",pid=1281,fd=16)) tcp LISTEN 0 100 127.0.0.1:25002 : users:(("nxclient.bin",pid=1318,fd=7)) tcp LISTEN 0 50 :139 : users:(("smbd",pid=5313,fd=33)) tcp LISTEN 0 32 :::21 ::: users:(("proftpd",pid=5292,fd=0)) tcp LISTEN 0 128 :::8086 ::: users:(("influxd",pid=5354,fd=306)) tcp LISTEN 0 128 :::22 ::: users:(("dropbear",pid=624,fd=4)) tcp LISTEN 0 128 :::3001 ::: users:(("grafana-server",pid=5362,fd=12)) tcp LISTEN 0 128 ::1:7002 ::: users:(("nxnode.bin",pid=1281,fd=17)) tcp LISTEN 0 100 ::1:1883 :::* users:(("mosquitto",pid=5337,fd=6)) tcp LISTEN 0 50 :::445 :::* users:(("smbd",pid=5313,fd=30)) tcp LISTEN 0 100 :::4000 :::* users:(("nxd",pid=807,fd=4)) tcp LISTEN 0 50 :::139 :::* users

[ralight]

tcp LISTEN 0 100 127.0.0.1:1883 : users:(("mosquitto",pid=5337,fd=5)) - it looks like Mosquitto is already running.

[WombatHollow]

It sounds like you might be trying to start Mosquitto twice, the first time is a leftover from earlier versions that need deletion. The words below are from a post in another thread.

There was a root CRON job that runs launcher.sh which contained sudo mosquitto -d

How did I find it. Well once I found CRON has a @reboot option I looked further and found CRON is by user including root. So I winged it and tried sudo crontab -l hoping the use of sudo finds root cronjobs instead of pi user jobs and there as a another job.

After that it was a tidy up of all the other things I had tweaked and re-enable the systemd job on reboot. sudo systemctl enable mosquitto.service

So now have 2.0.11 working as I like. I suspect that CRON job was a left over from earlier versions of Mosquitto (I was on 1.5 or 1.6) but the update to 2.0.11 didn't delete it when it created the mosquitto.service job.

[maddogeco]

I have just got a fresh RPi image then tried to install Mosquitto. After the install I ran mosquitto -v and got this the same error. which makes me think it isn't running twice 1662518134: mosquitto version 2.0.11 starting 1662518134: Using default config. 1662518134: Starting in local only mode. Connections will only be possible from clients running on this machine. 1662518134: Create a configuration file which defines a listener to allow remote access. 1662518134: For more details see https://mosquitto.org/documentation/authentication-methods/ 1662518134: Opening ipv4 listen socket on port 1883. 1662518134: Error: Address already in use 1662518134: Opening ipv6 listen socket on port 1883. 1662518134: Error: Address already in use

[tomlas32]

I get the same issue

1679611138: mosquitto version 2.0.11 starting 1679611138: Using default config. 1679611138: Starting in local only mode. Connections will only be possible from clients running on this machine. 1679611138: Create a configuration file which defines a listener to allow remote access. 1679611138: For more details see https://mosquitto.org/documentation/authentication-methods/ 1679611138: Opening ipv4 listen socket on port 1883. 1679611138: Error: Address already in use 1679611138: Opening ipv6 listen socket on port 1883. 1679611138: Error: Address already in use

I created a connect.conf file in which I defined the listener to 1883 and set the allow_anonymous to true but still get the local mode. any idea why?

[narc-Ontakac2]

See the debian bug #892491. I think it is describing the same issue.

[narc-Ontakac2]

This may have been fixed in between by modifications in systemd restart behavior. Is anybody still seeing this?