layoaster commented on issue #10572:
URL: https://github.com/apache/druid/issues/10572#issuecomment-1277364291

   Well I'm trying to connect without TLS (`SASL_PLAINTEXT"`) and doesn't seem 
to be working. It may still be an issue on our side though.
   
   My config
   ```json
   "ioConfig": {
         "topic": "<topic>",
         "consumerProperties": {
           "bootstrap.servers": "<kafka_hostname>:443",
           "sasl.mechanism": "SCRAM-SHA-512",
           "security.protocol": "SASL_PLAINTEXT",
           "sasl.jaas.config": 
"org.apache.kafka.common.security.scram.ScramLoginModule required 
username=\"<user>\" password=\"<passsword>\";"
         },
   ...
   ```
   
   Druid keeps showing this error:
   ```
   Connection to node -1 (/////) terminated during authentication. This may 
happen due to any of the following reasons: (1) Authentication failed due to 
invalid credentials with brokers older than 1.0.0, (2) Firewall blocking Kafka 
TLS traffic (eg it may only allow HTTPS traffic), (3) Transient network issue.
   ```
   
   It's not an issue with "invalid credentials" because I did try with invalid 
ones and the error message was different.


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