MQTT

• Why and When to Use MQTT Topics Beginning with $
  • Also explains topics and wildcards

Message broker

Moquitto

• Website
• Mosquitto docs
• Recommende by zigbee2mqtt

Config

• Authentication methods
• Mosquitto Username and Password Authentication -Configuration and Testing

listener 1883
allow_anonymous false
password_file auth.conf

Generate password file:

podman run --rm -it -v /tmp:/tmp docker.io/eclipse-mosquitto mosquitto_passwd -c /tmp/auth.conf mqtt

Bridges

Zigbee2MQTT

• Website
• see zigbee2mqtt.md

mqtt-exporter

• GitHub
  • Chart in charts/mqtt-exporter/
  • Published chart: geek-cookbook/mqtt-exporter helm chart
• Container images
• MQTT_TOPIC and MQTT_IGNORED_TOPICS example
• Downside: The Metrics conversion example shows that different label values of the same MQTT payload are converted into individual Prometheus metrics. This not great for certain situations (i.e. where you need latitude and longitude together for a Grafana GeoMap)

mqtt2prometheus

• GitHub
• MQTT to Prometheus gateway
• Stale: Last release 2023-01

Cli

• mqtt-cli

Install:

pamac install mqtt-cli-bin

Test the server:

mqtt test -h SERVER

See all topics: Subscribe to #:

mqtt sub -t '#'

TUI

• mqttui
  • "Subscribe to a MQTT Topic or publish something quickly from the terminal"

Example:

mqttui mqttui --username mqtt --password $(rbw get 'mqtt.c.varac.net|user-pw|mqtt')  -b mqtt://casita