I can find some broker/producer metrics here http://kafka.apache.org/documentation.html#monitoring
but where can I find consumer metrics docs Everytime I have to log this to find out what metrics I want MetricName [name=join-rate, group=consumer-coordinator-metrics, description=The number of group joins per second, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@ebea716;MetricName [name=fetch-size-avg, group=consumer-fetch-manager-metrics, description=The average number of bytes fetched per request, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@6cb9cea;MetricName [name=commit-latency-avg, group=consumer-coordinator-metrics, description=The average time taken for a commit request, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@21aaca22;MetricName [name=join-time-avg, group=consumer-coordinator-metrics, description=The average time taken for a group rejoin, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@53bc8f72;MetricName [name=incoming-byte-rate, group=consumer-metrics, description=Bytes/second read off all sockets, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@34f9c3e0;MetricName [name=bytes-consumed-rate, group=consumer-fetch-manager-metrics, description=The average number of bytes consumed per second, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@36c7401a;MetricName [name=response-rate, group=consumer-metrics, description=Responses received sent per second., tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@5341870e;MetricName [name=connection-creation-rate, group=consumer-metrics, description=New connections established per second in the window., tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@9f0d8f4;MetricName [name=fetch-rate, group=consumer-fetch-manager-metrics, description=The number of fetch requests per second., tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@23338045;MetricName [name=join-time-max, group=consumer-coordinator-metrics, description=The max time taken for a group rejoin, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@5cdabd4d;MetricName [name=io-wait-ratio, group=consumer-metrics, description=The fraction of time the I/O thread spent waiting., tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@659b7186;MetricName [name=fetch-size-max, group=consumer-fetch-manager-metrics, description=The maximum number of bytes fetched per request, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@403a4887;MetricName [name=assigned-partitions, group=consumer-coordinator-metrics, description=The number of partitions currently assigned to this consumer, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@326fb802;MetricName [name=io-time-ns-avg, group=consumer-metrics, description=The average length of time for I/O per select call in nanoseconds., tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@432b0ee3;MetricName [name=records-consumed-rate, group=consumer-fetch-manager-metrics, description=The average number of records consumed per second, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@3fde7b88;MetricName [name=io-wait-time-ns-avg, group=consumer-metrics, description=The average length of time the I/O thread spent waiting for a socket ready for reads or writes in nanoseconds., tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@5485cfd8;MetricName [name=select-rate, group=consumer-metrics, description=Number of times the I/O layer checked for new I/O to perform per second, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@2cbdcaf6;MetricName [name=fetch-throttle-time-max, group=consumer-fetch-manager-metrics, description=The maximum throttle time in ms, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@6057f36c;MetricName [name=heartbeat-response-time-max, group=consumer-coordinator-metrics, description=The max time taken to receive a response to a heartbeat request, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@2e2e68de;MetricName [name=network-io-rate, group=consumer-metrics, description=The average number of network operations (reads or writes) on all connections per second., tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@68e6de81;MetricName [name=fetch-latency-max, group=consumer-fetch-manager-metrics, description=The max time taken for any fetch request., tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@d1a1cf5;MetricName [name=request-size-avg, group=consumer-metrics, description=The average size of all requests in the window.., tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@2d631f8b;MetricName [name=commit-rate, group=consumer-coordinator-metrics, description=The number of commit calls per second, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@46abf5f4;MetricName [name=sync-time-max, group=consumer-coordinator-metrics, description=The max time taken for a group sync, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@43a08a6b;MetricName [name=request-rate, group=consumer-metrics, description=The average number of requests sent per second., tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@60df997c;MetricName [name=io-ratio, group=consumer-metrics, description=The fraction of time the I/O thread spent doing I/O, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@77d5cd93;MetricName [name=sync-rate, group=consumer-coordinator-metrics, description=The number of group syncs per second, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@75abab5b;MetricName [name=last-heartbeat-seconds-ago, group=consumer-coordinator-metrics, description=The number of seconds since the last controller heartbeat, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@597f1fb7;MetricName [name=fetch-throttle-time-avg, group=consumer-fetch-manager-metrics, description=The average throttle time in ms, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@28fb5548;MetricName [name=commit-latency-max, group=consumer-coordinator-metrics, description=The max time taken for a commit request, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@c9bfefd;MetricName [name=request-size-max, group=consumer-metrics, description=The maximum size of any request sent in the window., tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@55819a82;MetricName [name=records-per-request-avg, group=consumer-fetch-manager-metrics, description=The average number of records in each request, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@2fc6f8a9;MetricName [name=sync-time-avg, group=consumer-coordinator-metrics, description=The average time taken for a group sync, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@2fef37c0;MetricName [name=heartbeat-rate, group=consumer-coordinator-metrics, description=The average number of heartbeats per second, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@23536d6;MetricName [name=outgoing-byte-rate, group=consumer-metrics, description=The average number of outgoing bytes sent per second to all servers., tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@73a31cbb;MetricName [name=connection-close-rate, group=consumer-metrics, description=Connections closed per second in the window., tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@59b3744c;MetricName [name=connection-count, group=consumer-metrics, description=The current number of active connections., tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@14985796;MetricName [name=fetch-latency-avg, group=consumer-fetch-manager-metrics, description=The average time taken for a fetch request., tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@1d9e436a;MetricName [name=records-lag-max, group=consumer-fetch-manager-metrics, description=The maximum lag in terms of number of records for any partition in this window, tags={client-id=consumer-4}]=org.apache.kafka.common.metrics.KafkaMetric@15bf357