Lesson 11 of 12 · Data and operations
Real incidents: split-brain, flapping VIP, overly aggressive health check, missing fencing
Objective
Quickly recognise in the logs the typical failures of highly available architectures, the ones you meet on call, and apply the right fix without making things worse.
This lesson is part of the full course
Unlock High availability: HAProxy, Keepalived, Pacemaker and Corosync to read every lesson, do the exercises, access the simulations and earn your certificate.
Already enrolled? Log in.