telegraf/plugins/inputs/mqtt_consumer/README.md

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# MQTT Consumer Input Plugin
The [MQTT](http://mqtt.org/) consumer plugin reads from
specified MQTT topics and adds messages to InfluxDB.
The plugin expects messages in the
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[Telegraf Input Data Formats](https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md).
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### Configuration:
```toml
# Read metrics from MQTT topic(s)
[[inputs.mqtt_consumer]]
## MQTT broker URLs to be used. The format should be scheme://host:port,
## schema can be tcp, ssl, or ws.
servers = ["tcp://localhost:1883"]
## MQTT QoS, must be 0, 1, or 2
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qos = 0
## Connection timeout for initial connection in seconds
connection_timeout = "30s"
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## Topics to subscribe to
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topics = [
"telegraf/host01/cpu",
"telegraf/+/mem",
"sensors/#",
]
# if true, messages that can't be delivered while the subscriber is offline
# will be delivered when it comes back (such as on service restart).
# NOTE: if true, client_id MUST be set
persistent_session = false
# If empty, a random client ID will be generated.
client_id = ""
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## username and password to connect MQTT server.
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# username = "telegraf"
# password = "metricsmetricsmetricsmetrics"
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## Optional TLS Config
# tls_ca = "/etc/telegraf/ca.pem"
# tls_cert = "/etc/telegraf/cert.pem"
# tls_key = "/etc/telegraf/key.pem"
## Use TLS but skip chain & host verification
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# insecure_skip_verify = false
## Data format to consume.
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## Each data format has its own unique set of configuration options, read
## more about them here:
## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
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data_format = "influx"
```
### Tags:
- All measurements are tagged with the incoming topic, ie
`topic=telegraf/host01/cpu`