# Keycloak 17 custom SPI logging

**URL:** <https://forum.keycloak.org/t/keycloak-17-custom-spi-logging/13722>\
**Category:** Extending the server\
**Created:** [February 18, 2022, 6:55pm UTC](https://forum.keycloak.org/t/keycloak-17-custom-spi-logging/13722 "2022-02-18T18:55:50Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![joerijansen](https://yyz2.discourse-cdn.com/free1/user_avatar/forum.keycloak.org/joerijansen/32/5094_2.png) [@joerijansen](https://forum.keycloak.org/u/joerijansen)\
**Post date:** [February 18, 2022, 6:55pm UTC](https://forum.keycloak.org/t/keycloak-17-custom-spi-logging/13722/1 "2022-02-18T18:55:51Z")

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Hi, I am migrating my custom SPI code to Keycloak 17. I noticed that my application logs (based on jboss logging) are not displayed in de STDOUT. However, switching to java.util.logging, as other Keycloak components now use, does not solve the problem. It is not just the loglevel: when I log on warning or severe level, no lines show up. Any suggestions?

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**Author:** ![dasniko](https://yyz2.discourse-cdn.com/free1/user_avatar/forum.keycloak.org/dasniko/32/2969_2.png) [@dasniko](https://forum.keycloak.org/u/dasniko)\
**Post date:** [February 18, 2022, 8:45pm UTC](https://forum.keycloak.org/t/keycloak-17-custom-spi-logging/13722/2 "2022-02-18T20:45:00Z")

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Using `Slf4j` works for me.