You are going to see the following error message during the startup of a Simulation Bot if SSL/TLS configuration is not configured correctly

ERROR : sasl_ssl://<APPLIANCE>:29092/2: Failed to initialize SASL authentication: SASL Handshake not supported by broker (required by mechanism PLAIN)


Solution

Make sure you use the correct SSL/TLS files for the Simulation Bot

ca-cert
mc.key
mc.pem

(just download them again from Settings - Download Bot Certificates via the OE UI)