get current config in kafka

O

5

14

I was trying to get the config for one of the kafka clusters we have. After doing a config change through puppet, I want to know if kafka has reloaded the config, or if we need to restart the service for that.

I have tried with ./kafka-configs.sh --describe --zookeeper my-zookeeper:2181 --entity-type brokers but I only have empty output.

I have also tried to find for the config browsing inside the zookeepers but i have found nothing.

Is there any way to retrieve which config is being used?

Olympic answered 21/3, 2018 at 12:41 Comment(3)

On broker start up , it should be printing the current config if log level is enabled – Brooke 21/3, 2018 at 14:22

thanks a lot @LijuJohn, it was there. – Olympic 21/3, 2018 at 14:45

How would I get the config of a kafka broker that is running and which I'm unauthorized to restart..? – Ferromagnetism 23/10, 2020 at 3:49

O

5

as suggested @LijuJohn i found the config in the server.log file. Thanks a lot!!

Olympic answered 21/3, 2018 at 14:45 Comment(1)

Doesn't help if the brokers never stop, and so are never restarted, though I accept it worked in your case – Tahmosh 4/6, 2019 at 13:28

D

15

Here's full working command to list all configs for the broker with id=1:

./bin/kafka-configs.sh --bootstrap-server <broker-host>:9092 --entity-type 
brokers --entity-name 1 --all --describe

Difficile answered 25/2, 2021 at 13:58 Comment(2)

It doesn't work for me cause: all is not a recognized option. – Uncover 17/6, 2022 at 13:50

@Uncover use kafka >= 2.5 – Hirohito 21/2, 2023 at 13:1

O

5

as suggested @LijuJohn i found the config in the server.log file. Thanks a lot!!

Olympic answered 21/3, 2018 at 14:45 Comment(1)

Doesn't help if the brokers never stop, and so are never restarted, though I accept it worked in your case – Tahmosh 4/6, 2019 at 13:28

P

1

Since Kafka 2.5.0 (see issue here), you can now specify the --all flag to list all configs (not just the dynamic ones) when using ./kafka-configs.sh

Phosphide answered 8/1, 2021 at 9:42 Comment(0)

F

1

On CentOS7, kafka version:3.3.2

Should be able to find all the configurations via:

bin/kafka-configs.sh --describe --bootstrap-server <advertised.listeners>:9092 --entity-type brokers --entity-name <broker-id> --all

#example:
bin/kafka-configs.sh --describe --bootstrap-server localhost:9092 --entity-type brokers --entity-name 0 --all

Note: Both <advertised.listeners> and could be found in config/server.properties

Formulism answered 7/2, 2023 at 2:39 Comment(0)

M

0

Have you tried with parameter --entity-name 0 where 0 is the id of the broker? This is required at least for my cluster.

Mixup answered 23/10, 2020 at 7:6 Comment(0)

Recommended topics

Hot tags