[keycloak-user] Add CA certificates for LDAPS ?

[Mathieu Poussin]

Hello.

What would be the recommended way to add a custom CA certificates ? The documentation has a lot of different ways and so far none of them worked :

- The X509_CA_BUNDLE env variable thing (It's running in a container), I can see the certificates in the JKS store  but looks like they are completely ignored by the app server.
- Added custom SPI to load a custom JKS store, same, no error at server start but they are completely ignored by the app server.

This is the error I am getting :

Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:397)
        at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:302)
        at sun.security.validator.Validator.validate(Validator.java:262)
        at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:324)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:229)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:124)
        at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1596)
        ... 99 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:141)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:126)
        at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:280)
        at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:392)
        ... 105 more


Another option would be to disable certificate verification on LDAPS as it's a trusted environment (last resort but well so far nothing else worked), would there be a way to do that?
Connecting over LDAP is not an option a this prevent some features to work like password reset.

Thanks.