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Area

dist/quarkus

Describe the bug

Main tracking issue: https://github.com/defenseunicorns/uds-core/issues/1212

When using Fedora F41 (kernel 6.12 line), Keycloak Pod get OOM Killed. The root cause can clearly be seen when manually calling the following command from the Keycloak Pod:

Kernel 6.11 (Good):

sh-5.1$ java -XshowSettings:vm -version

Max. Heap Size (Estimated): 247.50M <-- !!!

...

Provider: cgroupv2
Effective CPU Count: 1 <-- !!!

Kernel 6.12 (Bad):

sh-5.1$ java -XshowSettings:vm -version
...

Max. Heap Size (Estimated): 7.67G <-- !!! This is the Node value!

...

Provider: cgroupv2
Effective CPU Count: 16 <-- !!! Again, taken from the Node!

The issue has already been reported in JDK-8346874 that follows to the actual fix - JDK-8347129. At the time of writing, this has been fixed only in the latest JVM versions with no information about the backports

Version

26.0.8

Regression

[ ] The issue is a regression

Expected behavior

Memory should be properly interpreted

Actual behavior

Memory is being pulled from the Node running the container

How to Reproduce?

Deploy Keycloak on Fedora F41 (any Kubernetes distribution that doesn't use Virtual Machines, for example k3d) with Kernel 6.12 onwards

Anything else?

No response