As of Spring Boot 1.5 a new loggers actuator endpoint allows viewing and changing application logging levels in runtime.
- Add
spring-boot-actuatorto your project
1 2 3 4 | <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId></dependency> |
- Disable security for
loggersor for all endpoints
Set either management.security.enabled to false or endpoints.loggers.sensitive to false to disable security. Note that the latter changes only loggers endpoint.
- Get all loggers details
Execute /loggers endpoint in the browser or with curl. You will get a detailed view of the loggers configuration, e.g (fragment):
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | { "levels": [ "OFF", "ERROR", "WARN", "INFO", "DEBUG", "TRACE" ], "loggers": { "ROOT": { "configuredLevel": "TRACE", "effectiveLevel": "TRACE" }, "org": { "configuredLevel": null, "effectiveLevel": "TRACE" }, "pl.codeleak.demos.sbt": { "configuredLevel": null, "effectiveLevel": "TRACE" }, "pl.codeleak.demos.sbt.Application": { "configuredLevel": null, "effectiveLevel": "TRACE" } }} |
- Get selected logger details
Use the following endpoint to get details of a selected logger:
1 | /logger/{logger} |
Examples:
01 02 03 04 05 06 07 08 09 10 11 12 13 | λ curl -i http://localhost:8080/loggers/ROOT{"configuredLevel": null,"effectiveLevel": "TRACE"}λ curl -i http://localhost:8080/loggers/pl.codeleak.demos{"configuredLevel": null,"effectiveLevel": "TRACE"} |
- Update selected logger level in runtime
Execute a POST request:
1 | curl -i -X POST -H 'Content-Type: application/json' -d '{"configuredLevel": "TRACE"}' http://localhost:8080/loggers/ROOT |
Source code
The example configuration can be found in https://github.com/kolorobot/spring-boot-thymeleaf repository.
| Reference: | Spring Boot – Configure Log Level in runtime using actuator endpoint from our JCG partner Rafal Borowiec at the Codeleak.pl blog. |
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Spring Boot – Configure Log Level in run time using actuator endpoint for multiple instance of a spring micro services