500 Internal Server Error on starting with dynamic config from docs #1074
Description
Issue submitter TODO list
- I've looked up my issue in FAQ
- I've searched for an already existing issues here
- I've tried running
main-labeled docker image and the issue still persists there - I'm running a supported version of the application which is listed here
Describe the bug (actual behavior)
I tried:
docker run -it -p 8080:8080 -e DYNAMIC_CONFIG_ENABLED=true ghcr.io/kafbat/kafka-ui
and
cat docker-compose.yaml
services:
kafbat-ui:
container_name: kafbat-ui
image: ghcr.io/kafbat/kafka-ui:latest
ports:
- 8080:8080
environment:
DYNAMIC_CONFIG_ENABLED: 'true'
volumes:
- ~/kui/config.yml:/etc/kafkaui/dynamic_config.yaml
(config.yml is just empty file at this point)
Both get me:
|500 Internal Server Error: The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application.
Logs just show:
_ _ ___ __ _ _ _ __ __ _
| | | |_ _| / _|___ _ _ /_\ _ __ __ _ __| |_ ___ | |/ /__ _ / _| |_____
| |_| || | | _/ _ | '_| / _ \| '_ / _` / _| ' \/ -_) | ' </ _` | _| / / _`|
\___/|___| |_| \___|_| /_/ \_| .__\__,_\__|_||_\___| |_|\_\__,_|_| |_\_\__,|
|_|
2025-05-13 11:58:41,060 INFO [main] i.k.u.u.DynamicConfigOperations: Dynamic config loaded from /etc/kafkaui/dynamic_config.yaml
2025-05-13 11:58:41,070 INFO [main] i.k.u.KafkaUiApplication: Starting KafkaUiApplication vv1.2.0 using Java 21.0.6 with PID 1 (/api.jar started by kafkaui in /)
2025-05-13 11:58:41,070 DEBUG [main] i.k.u.KafkaUiApplication: Running with Spring Boot v3.4.3, Spring v6.2.3
2025-05-13 11:58:41,071 INFO [main] i.k.u.KafkaUiApplication: No active profile set, falling back to 1 default profile: "default"
2025-05-13 11:58:46,019 INFO [main] o.s.b.a.e.w.EndpointLinksResolver: Exposing 3 endpoints beneath base path '/actuator'
2025-05-13 11:58:46,186 WARN [main] i.k.u.c.a.DisabledAuthSecurityConfig: Authentication is disabled. Access will be unrestricted.
2025-05-13 11:58:46,775 INFO [main] o.s.b.w.e.n.NettyWebServer: Netty started on port 8080 (http)
2025-05-13 11:58:46,795 INFO [main] i.k.u.KafkaUiApplication: Started KafkaUiApplication in 6.748 seconds (process running for 7.916)
nothing else
Expected behavior
I should be able to reach the web UI and configure a new server
Your installation details
Just running docker as described
Steps to reproduce
docker run -it -p 8080:8080 -e DYNAMIC_CONFIG_ENABLED=true ghcr.io/kafbat/kafka-ui
Or docker-compose file:
cat docker-compose.yaml
services:
kafbat-ui:
container_name: kafbat-ui
image: ghcr.io/kafbat/kafka-ui:latest
ports:
- 8080:8080
environment:
DYNAMIC_CONFIG_ENABLED: 'true'
volumes:
- ~/kui/config.yml:/etc/kafkaui/dynamic_config.yaml
docker compose up -d
Screenshots
No response
Logs
No response
Additional context
docker logs kafbat-ui
| | | |_ | / |_ _ _ /\ _ __ __ _ | | ___ | |/ /_ _ / | |____
| || || | | / _ | '| / _ | '_ / / _| ' \/ -_) | ' </ _ | | / / `|
_/|| || ___|| // _| .___,_|||___| ||__,|| |__,|
|_|
2025-05-13 11:58:41,060 INFO [main] i.k.u.u.DynamicConfigOperations: Dynamic config loaded from /etc/kafkaui/dynamic_config.yaml
2025-05-13 11:58:41,070 INFO [main] i.k.u.KafkaUiApplication: Starting KafkaUiApplication vv1.2.0 using Java 21.0.6 with PID 1 (/api.jar started by kafkaui in /)
2025-05-13 11:58:41,070 DEBUG [main] i.k.u.KafkaUiApplication: Running with Spring Boot v3.4.3, Spring v6.2.3
2025-05-13 11:58:41,071 INFO [main] i.k.u.KafkaUiApplication: No active profile set, falling back to 1 default profile: "default"
2025-05-13 11:58:46,019 INFO [main] o.s.b.a.e.w.EndpointLinksResolver: Exposing 3 endpoints beneath base path '/actuator'
2025-05-13 11:58:46,186 WARN [main] i.k.u.c.a.DisabledAuthSecurityConfig: Authentication is disabled. Access will be unrestricted.
2025-05-13 11:58:46,775 INFO [main] o.s.b.w.e.n.NettyWebServer: Netty started on port 8080 (http)
2025-05-13 11:58:46,795 INFO [main] i.k.u.KafkaUiApplication: Started KafkaUiApplication in 6.748 seconds (process running for 7.916)