kcat:tldr:c0c1e
kcat: Consume messages starting with the oldest offset and exit after the last message is received.
$ kcat -C -t ${topic} -b ${brokers} -o beginning -e
try on your machine
The command "kcat" is used to run the Kafka console producer and consumer. Here is the breakdown of the given command:
- "kcat": It is the command to run the Kafka console producer and consumer.
- "-C": This flag specifies that the consumer should be used.
- "-t ${topic}": It specifies the topic to consume from. The "${topic}" is a variable that should be replaced with the actual name of the topic.
- "-b ${brokers}": It specifies the list of bootstrap servers/brokers to connect to. The "${brokers}" is a variable that should be replaced with the actual addresses of the Kafka brokers.
- "-o beginning": This option sets the start offset for consumption to the beginning of the topic. It means the consumer will read all the messages from the start of the topic.
- "-e": This flag will exit the consumer when reaching the end of the topic. Once all the messages from the topic have been consumed, the consumer will stop and exit.
In summary, this command starts a Kafka consumer that connects to the specified brokers, consumes messages from the given topic starting from the beginning, and stops after reaching the end of the topic.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.