Anatomy of a must-gather - Analyzing real customer issues
Welcome to Red Hat One 2025 and this exciting, hand-on lab experience. Throughout this lab, we will explore a wide variety of tools available to analyze, search and debug OpenShift cluster data to find patterns, issues and other useful information that will help you engage with your customers.
Lab structure
This lab is broken down into a set of 9 unique modules that explore a variety of tools. There is no specific ordering or pre-requisite to move between each module, but we do recommend you review Module 1
and Module 2
.
Once you have reviewed Module 1
and Module 2
, feel free to continue to Module 3
or pick one that interests you the most.
-
Module 1 introduces all of the tools we will be using
-
Module 2 does a deeper dive on the functionality in the
omc
tool -
Module 3 uses
omc
to explore an issue with a vSphere IPI cluster -
Module 4 uses
kubectl-dev_tool
to explore a cluster with an overloaded OpenShift API -
Module 5 uses
ocp_insights.sh
to proactively look for performance issues with OpenShift Insights data -
Module 6 uses
etcd-ocp-diag.sh
to review etcd logs for performance related issues -
Module 7
-
Module 8
-
Module 9 uses
omc
and manual checks on the cluster must-gather in order to explore an OCP networking issue