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26 lines
935 B
Markdown
26 lines
935 B
Markdown
# Parameter `CACert`
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Default Value: `""`
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Example: `/config/certs/RootCA.pem`.
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!!! Warning
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This is an **Expert Parameter**! Only change it if you understand what it does!
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Path to the CA certificate file.
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This is part of the configuration to enable TLS for MQTT.
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The CA Certificate is used by the client to validate the broker is who it claims to be.
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It allows the client to authenticate the server, which is the first part of the MTLS handshake.
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Usually there is a common RootCA certificate for the MQTT broker.
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More information is available [here](https://jomjol.github.io/AI-on-the-edge-device-docs/MQTT-API/#mqtt-tls).
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!!! Note
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This also means that you might have to change the protocol and port in [uri](https://jomjol.github.io/AI-on-the-edge-device-docs/Parameters/#parameter-uri) to `mqtts://example.com:8883`!
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!!! Note
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Only TLS 1.2 is supported!
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!!! Note
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Only Certificates up to 4096 Bit are supported!
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