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Ignition has made it simple to create a self-signed certificate through the Setup SSL / TLS wizard but there are additional steps needed to be able to use that certificate with the MQTT modules. 

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Ignition Ignition

Ignition

Navigate to Config > NETWORKING > Web Server from the Ignition left hand menu bar and select Setup SSL / TLS

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Ignition will now show that you have successfully transitioned to self-signed certificate and that SSL /TLS is enabled.

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MQTTModules MQTTModules

MQTT Modules

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Certificate Certificate

Certificate

To allow the MQTT modules to validate the chain of trust for the self-signed certificate, you will need to upload the certificate to each module.

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Browse to your cert.pem file to upload, configure a friendly name and Save Changes.

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ConfigureDistributor ConfigureDistributor

Configure MQTT Distributor to use SSL/TLS

Enable SSL/TLS for MQTT Distributor by selecting the "Enable TLS" configuration setting under TLS Setting section for MQTT Distributor.

Click Save to confirm the configuration update.

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ConfigEngineandTransmission ConfigEngineandTransmission

Configure MQTT Engine and MQTT Transmission to use SSL/TLS

For MQTT Engine and MQTT Transmission to connect to Distributor over SSL/TLS you will need to update each Server configuration.

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