Phase 10 / 11 · Trips 115–126

Application Reliability and Troubleshooting

Develop the practical diagnostic skills required for CKAD-style exercises.

Walkthroughs planned

Before this phase: Configuration, Security, and Storage — checkpoint

1. Trip 115Need to know when a container is healthyConfigure a liveness probe →
   Learning goal·Not yet practiced
2. Trip 116Need to know when an application can receive trafficConfigure a readiness probe →
   Learning goal·Not yet practiced
3. Trip 117Need to support slow startupConfigure a startup probe →
   Learning goal·Not yet practiced
4. Trip 118Need safe application shutdownConfigure lifecycle hooks and termination grace periods →
   Learning goal·Not yet practiced
5. Trip 119Need to troubleshoot Pending PodsInvestigate scheduling and resource constraints →
   Learning goal·Not yet practiced
6. Trip 120Need to troubleshoot CrashLoopBackOffInspect container failures and logs →
   Learning goal·Not yet practiced
7. Trip 121Need to troubleshoot image pull failuresInvestigate image references and registry credentials →
   Learning goal·Not yet practiced
8. Trip 122Need to troubleshoot OOMKilled containersInspect memory usage and limits →
   Learning goal·Not yet practiced
9. Trip 123Need to troubleshoot DNS failuresTest service discovery from inside a Pod →
   Learning goal·Not yet practiced
10. Trip 124Need to troubleshoot unavailable ServicesInspect selectors, endpoints, and ports →
    Learning goal·Not yet practiced
11. Trip 125Need to troubleshoot storage failuresInspect PVCs and Pod events →
    Learning goal·Not yet practiced
12. Trip 126Need to troubleshoot permissionsInspect ServiceAccounts, RBAC, and security contexts →
    Learning goal·Not yet practiced