Enterprise Linux Troubleshooting

Coming soon. Course preview.

Learn to trace a Linux failure from its symptoms to the underlying cause.

EX342 RHEL 8.4

Before you begin

Recommended: RHCSA-equivalent administration and troubleshooting experience; RH342 is recommended. RHCSA is not required to take EX342.

Planned course outline

1. Diagnostic method

   • System evidence, documentation, monitoring, Cockpit, Ansible, centralized logs

2. Startup recovery

   • Boot/services, root access, hardware, kernel modules

3. Storage recovery

   • Damaged filesystems, LVM, encrypted data, iSCSI

4. Package repair

   • Dependencies, RPM database, altered files

5. Connectivity diagnosis

   • Network tests, traffic inspection, configuration repairs

6. Application investigation

   • Libraries, memory leaks, debugging, SELinux, containers

7. Authentication recovery

   • PAM and identity-service faults

8. Escalation evidence

   • Kernel dumps and SystemTap modules

Lessons and labs are not available yet. This preview describes planned coverage.

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