MQTT - Between 2 Ubuntu hosts in vmware

[alan]

Hi friends,

I am new to MQTT. I am trying to setup MQTT between 2 ubuntu 18.x hosts installed in vmware. Both of these hosts has id address and I can even ping or ssh each other successfully.

Now in first Ubuntu host (machine 1 which i am going to use as publisher) i have installed mosquitto and mosquitto-clients and i see mosquitto running (command ps -e) and same installation is done on second ubuntu machine 2 (which i am going to use subscriber).

Now when i use below commands , i dont see message in the subscriber host.
Machine2 > mosquitto_sub -h <Machine 1 IPaddress> -t test
Machine1> mosquitto_pub -h <Machine 2 IPaddress> -t test -m "first message"

Nothing shows up in subscriber machine 2.
I also used -d switch on publisher machine to see if any clue but didnt get any info.
Any help to solve this problem will be of great help
Thanks
Alan

[Steve-Mcl]

Do you know what version of mosquito is installed? As of version 2 it is defaulted to only accept connections from localhost. You need to modify the conf file. Quick search on this forum or the internet for mosquito 2 binding will reveal the answer.

PS you do only have one broker right?

[alan]

@Steve-Mcl

mosquito 2 binding

Thanks Steve..
Just added 1 broker..
and added allow_anonyous true and , 'wola' all worked.. at least message worked. now need to configure security.

Thanks
Alan