What command shows all of the topics and offsets o

Question

I'm looking for a Kafka command that shows all of the topics and offsets of partitions. If it's dynamically would be perfect. Right now I'm using java code to see these information, but it's very inconvenient.

Answer 1

Kafka ships with some tools you can use to accomplish this.

List topics:

# ./bin/kafka-topics.sh --list --zookeeper localhost:2181
test_topic_1
test_topic_2
...

List partitions and offsets:

# ./bin/kafka-run-class.sh kafka.tools.ConsumerOffsetChecker --broker-info --group test_group --topic test_topic --zookeeper localhost:2181
Group           Topic                  Pid Offset          logSize         Lag             Owner
test_group      test_topic             0   698020          698021          1              test_group-0
test_group      test_topic             1   235699          235699          0               test_group-1
test_group      test_topic             2   117189          117189          0               test_group-2

Update for 0.9 (and higher) consumer APIs

If you're using the new apis, there's a new tool you can use: kafka-consumer-groups.sh.

./bin/kafka-consumer-groups.sh --bootstrap-server localhost:9092 --group count_errors --describe
GROUP                          TOPIC                          PARTITION  CURRENT-OFFSET  LOG-END-OFFSET  LAG             OWNER
count_errors                   logs                           2          2908278         2908278         0               consumer-1_/10.8.0.55
count_errors                   logs                           3          2907501         2907501         0               consumer-1_/10.8.0.43
count_errors                   logs                           4          2907541         2907541         0               consumer-1_/10.8.0.177
count_errors                   logs                           1          2907499         2907499         0               consumer-1_/10.8.0.115
count_errors                   logs                           0          2907469         2907469         0               consumer-1_/10.8.0.126

Answer 2

We're using Kafka 2.11 and make use of this tool - kafka-consumer-groups.

$ rpm -qf /bin/kafka-consumer-groups
confluent-kafka-2.11-1.1.1-1.noarch

For example:

$ kafka-consumer-groups --describe --group logstash | grep -E "TOPIC|filebeat"
Note: This will not show information about old Zookeeper-based consumers.
TOPIC            PARTITION  CURRENT-OFFSET  LOG-END-OFFSET  LAG             CONSUMER-ID                                     HOST             CLIENT-ID
beats_filebeat   0          20003914484     20003914888     404             logstash-0-XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX /192.168.1.1   logstash-0
beats_filebeat   1          19992522286     19992522709     423             logstash-0-XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX /192.168.1.1   logstash-0
beats_filebeat   2          19990597254     19990597637     383             logstash-0-XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX /192.168.1.1   logstash-0
beats_filebeat   7          19991718707     19991719268     561             logstash-0-YYYYYYYY-YYYY-YYYY-YYYY-YYYYYYYYYYYY /192.168.1.2   logstash-0
beats_filebeat   8          20015611981     20015612509     528             logstash-0-YYYYYYYY-YYYY-YYYY-YYYY-YYYYYYYYYYYY /192.168.1.2   logstash-0
beats_filebeat   5          19990536340     19990541331     4991            logstash-0-ZZZZZZZZ-ZZZZ-ZZZZ-ZZZZ-ZZZZZZZZZZZZ /192.168.1.3   logstash-0
beats_filebeat   6          19990728038     19990733086     5048            logstash-0-ZZZZZZZZ-ZZZZ-ZZZZ-ZZZZ-ZZZZZZZZZZZZ /192.168.1.3   logstash-0
beats_filebeat   3          19994613945     19994616297     2352            logstash-0-AAAAAAAA-AAAA-AAAA-AAAA-AAAAAAAAAAAA /192.168.1.4   logstash-0
beats_filebeat   4          19990681602     19990684038     2436            logstash-0-AAAAAAAA-AAAA-AAAA-AAAA-AAAAAAAAAAAA /192.168.1.4   logstash-0

Random Tip

NOTE: We use an alias that overloads kafka-consumer-groups like so in our /etc/profile.d/kafka.sh:

alias kafka-consumer-groups="KAFKA_JVM_PERFORMANCE_OPTS=\"-Djava.security.auth.login.config=$HOME/.kafka_client_jaas.conf\"  kafka-consumer-groups --bootstrap-server ${KAFKA_HOSTS} --command-config /etc/kafka/security-enabler.properties"

Answer 3

You might want to try kt. It's also quite faster than the bundled kafka-topics.

This is the current most complete info description you can get out of a topic with kt:

kt topic -brokers localhost:9092 -filter my_topic_name -partitions -leaders -replicas

It also outputs as JSON, so you can pipe it to jq for further flexibility.