Produce messages to a Kafka topic. Configuration and command guide: https://docs.confluent.io/confluent-cli/current/cp-produce-consume.html.

When using this command, you cannot modify the message header, and the message header will not be printed out.

Usage:
  confluent kafka topic produce <topic> [flags]

Examples:
Produce message to topic "my_topic" with SASL_SSL/PLAIN protocol (providing username and password).

  $ confluent kafka topic produce my_topic --protocol SASL_SSL --sasl-mechanism PLAIN --bootstrap localhost:19091 --username user --password secret --ca-location my-cert.crt

Produce message to topic "my_topic" with SSL protocol, and SSL verification enabled.

  $ confluent kafka topic produce my_topic --protocol SSL --bootstrap localhost:18091 --ca-location my-cert.crt

Flags:
      --bootstrap string                  REQUIRED: Comma-separated list of broker hosts, each formatted as "host" or "host:port".
      --ca-location string                REQUIRED: File or directory path to one or more CA certificates for verifying the broker's key with SSL.
      --username string                   SASL_SSL username for use with PLAIN mechanism.
      --password string                   SASL_SSL password for use with PLAIN mechanism.
      --cert-location string              Path to client's public key (PEM) used for SSL authentication.
      --key-location string               Path to client's private key (PEM) used for SSL authentication.
      --key-password string               Private key passphrase for SSL authentication.
      --protocol string                   Specify the broker communication protocol as "PLAINTEXT", "SASL_SSL", or "SSL". (default "SSL")
      --sasl-mechanism string             SASL_SSL mechanism used for authentication. (default "PLAIN")
      --key-schema string                 The filepath of the message key schema.
      --schema string                     The filepath of the message value schema.
      --key-format string                 Format of message key as "string", "avro", "integer", "jsonschema", or "protobuf". Note that schema references are not supported for Avro. (default "string")
      --value-format string               Format message value as "string", "avro", "integer", "jsonschema", or "protobuf". Note that schema references are not supported for Avro. (default "string")
      --references string                 The path to the references file.
      --parse-key                         Parse key from the message.
      --delimiter string                  The delimiter separating each key and value. (default ":")
      --config strings                    A comma-separated list of configuration overrides ("key=value") for the producer client.
      --config-file string                The path to the configuration file for the producer client, in JSON or Avro format.
      --schema-registry-endpoint string   The URL of the Schema Registry cluster.
  -o, --output string                     Specify the output format as "human", "json", or "yaml". (default "human")

Global Flags:
  -h, --help            Show help for this command.
      --unsafe-trace    Equivalent to -vvvv, but also log HTTP requests and responses which might contain plaintext secrets.
  -v, --verbose count   Increase verbosity (-v for warn, -vv for info, -vvv for debug, -vvvv for trace).
