Hi, I am one of the maintainers of prometheus-kafka-consumer-group-exporter[1], which exports consumer group offsets and lag to Prometheus. The way we currently scrape this information is by periodically executing `kafka-consumer-groups.sh --describe` for each group and parse the output.
Recently the output from `kafka-consumer-groups.sh --describe` was changed[2]. While I am working on a patch[3] to accomodate for the new output format I was wondering if there is an easier, possibly more stable[4] and more future proof, way for our project to extract the information we are interested in. Does anyone know of a Go library that could extract the metrics we need? Or would it make sense to refactor `kafka-consumer-groups.sh` to support a more structured output? I'd love to hear your input. Also, if Kafka exported the same metrics through JMX our project would not exist, but maybe that's another story... Cheers, Jens [1] https://github.com/kawamuray/prometheus-kafka-consumer-group-exporter [2] https://github.com/kawamuray/prometheus-kafka-consumer-group-exporter/issues/24 [3] https://github.com/kawamuray/prometheus-kafka-consumer-group-exporter/pull/29 [4] We've also encountered `kafka-consumer-groups.sh` hanging a few times in production. There's a race condition somewhere in the script, most likely when a topic is rebalancing. Currently we kill the process if it doesn't finish within a timeout. See https://github.com/kawamuray/prometheus-kafka-consumer-group-exporter/blob/e4cdc3b1245f636d89d7e227066f02578d732165/kafka/collector.go#L44 . -- Want to communicate with me securely? You can find my PGP key here <https://pgp.mit.edu/pks/lookup?op=get&search=0xBA632DB691DA03B8>.
