How-To

A troubleshooting guide for the Kerberos error ‘Cannot find key of the appropriate type to decrypt AP REP,’ covering encryption type mismatches between keytabs and Active Directory, plus practical steps to align AES and RC4 settings.

Learn how to verify that your file system supports hole punching by creating a test file, punching a hole with fallocate, and confirming the space savings with du.

Kerberos error 44 occurs when the keytab KVNO does not match the KDC database. This guide walks through diagnosing the mismatch and regenerating the keytab to restore authentication.

Walk through inspecting a Hue keytab file, verifying its principals with klist, and confirming that the resulting ticket carries the Renewable flag Hue requires for long-running service operations.

Hue returns a Permission Denied error when the IDP sends custom SAML attributes that pysaml2 cannot map. This guide walks through creating an attribute mapping file and configuring Hue to resolve the issue.

Kerberos authentication failures can be frustrating to debug. Setting the KRB5_TRACE environment variable gives you detailed library-level logging that pinpoints exactly where the exchange breaks down.