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Services Usethe MQTT broker service

IX20 User Guide

780

ipsec

loopback

setup

(config)>

Repeat thisstep to include additional firewall zones.

6. Enable the system to write MQTT debug messages to the system log:

(config)> service mqtt debug true

(config)>

7. Enable connectionsfrom clientsthat do not provide a username:

(config)> service mqtt allow_anonymous true

(config)>

8. By default, the MQTT broker will allow clientswithout client IDs to connect, and will generate a

client ID for them. To disable:

(config)> service mqtt allow_zero_length_client_id false

(config)>

9. Enable the broker to replace the client IDwith the username, which will prevent oneclient

from disconnecting another by using the same client ID:

(config)> service mqtt use_username_as_client_id true

(config)>

10. Add and configure clients that are allowed to connect to the broker:

a. Add a client:

(config)> add service mqtt client end

(config service mqtt client 0)>

b. Set the username and password for the client:

(config service mqtt client 0)> username value

(config service mqtt client 0)> password value

(config service mqtt client 0)>

c. Add a topic to control thisclient's accessto:

i. Add a topic:

(config service mqtt client 0)> add topic_acl end

(config service mqtt client 0 topic_acl 0)>

ii. Set the topic:

(config service mqtt client 0 topic_acl 0)> topic value

(config service mqtt client 0 topic_acl 0)>

where value is one of:

Digi IX20 User Manual

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