Mosquitto config LWT

[agrosjea]

In mosquitto.conf I found no reference to defining an LWT message when I connect to another broker.
This feature would be really nice to be aware of each sub-broker connexion state. Does it exists ?

Here is my current conf

connection MyCentralBroker
address MyCentralBroker.net:1883
topic # both 1
clientid Site1

Would be grat to have here for example:

lwt_message site1/isAlive
lwt_retain true
lwt_payload {"state" : false}

[karlp]

there's no way of changing the message itself, but notifications_topic will do what you want.

[karlp]

(if you're bridging to a broker that allows publishing to the $SYS tree, you already have this LWT topic under $SYS/broker/connections/...)

[agrosjea]

Thanks karlp
Not sure to fully understand though
notifications_topic is a parameter of the config file ? how do I use it exactly ?
What should I do with $SYS ? can I publish my LWT there ?

[karlp]

notificatoin_topic is a config directive, yes. Please read the documentation on bridges.

[agrosjea]

Oh great, as that mechanism is a bit similar to LWT i would recommend that you put the keyword LWT somewhere in the conf file above notification system.
"notifications" is too generic and didnt ring a bell when reading your doc.
Thanks for your great software!

[karlp]

this ticket can be closed I believe.

[agrosjea]

Yes Karl, Thanks for your support Le dim. 24 mars 2019 à 11:07, Karl Palsson <[email protected]> a écrit :

…

this ticket can be closed I believe. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#1188 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABZe5UBnAJ3H2DBkJlXMi4wcpMyWSfD_ks5vZ05agaJpZM4bdHXq> .

-- ------------------------- Arnaud Grosjean

[ralight]

I've added a line to the documentation as well, so this should be easier to find in the future.