[Document URL]
https://github.com/openshift/openshift-docs/blob/enterprise-4.7/modules/cluster-logging-collector-log-forward-kafka.adochttps://docs.openshift.com/container-platform/4.6/logging/cluster-logging-external.html#cluster-logging-collector-log-forward-kafka_cluster-logging-external
[Section Number and Name]
Forwarding logs to a Kafka broker

[Describe the issue]
In the example for sending to Kafka, it's possible to read:

...

name: infra-logs
 type: kafka
 url: tls://kafka.devlab2.example.com:9093/infra-topic name: audit-logs
 ...

In the infra-logs endpoint is defined to send using tls, but not secret defined

[Suggestions for improvement]
Include in the example the secret to send via tls or use tcp to be insecure. Then, if the example is using TLS, it could be something like:

 ...

name: infra-logs
 type: kafka
 url: tls://kafka.devlab2.example.com:9093/infra-topic
 secret:
 name: kafka-secret-devlab2 name: audit-logs
 ...

Or in the case that we want to show an example for using kafka with tcp:

 ...

name: infra-logs
 type: kafka
 url: 
 http://kafka.devlab2.example.com:9093/infra-topic name: audit-logs
 ...

This was reported time ago by me in this BZ#1904372