Troubleshooting

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.

A practical troubleshooting guide for the Kerberos AP REP decryption error, covering the most common causes from keytab mismatches to encryption type misconfigurations.

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.

Inconsistent forward and reverse DNS lookups can cause a cascade of cluster and security issues. This guide walks through quick Python and Java one-liners to verify that your hostname, IP, and reverse record all line up.

A quick reference for using getent to verify how your Linux system resolves hostnames, short names, and IP addresses through the full NSS chain.

A quick procedure for resolving Cloudera Manager agent failures caused by corrupted system alternatives entries, including the exact commands to stop the agent, purge stale alternatives, and restart cleanly.