Diagnose and resolve CentOS issues with RHEL-compatible commands and SELinux awareness.
Confirms CentOS release type (Stream vs. legacy) and provides triage steps using systemctl, journalctl, dnf/yum, and log inspection Includes copy-paste-ready remediation commands with verification steps after each major change Addresses SELinux policies and firewalld configuration as part of troubleshooting workflow Provides rollback and cleanup procedures to safely revert changes
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