How to troubleshoot kernel crashes, hangs, or reboots with kdump on Red Hat Openshift Container Platform
Issue
- How can kdump be configured on Red Hat OpenShift Container Platform (RHOCP) cluster nodes to investigate node crashes?
- What is the procedure to configure kexec/kdump on Red Hat CoreOS systems?
- How can unexpected reboots be investigated and troubleshooted effectively?
- What steps are required to generate a kernel memory core dump (vmcore) on a system?
- Root Cause Analysis (RCA) of kernel panic / server crash is required
- The system entered a hung state or became unresponsive. How can this issue be effectively troubleshooted?
- How much time is required to capture a vmcore?
- How much disk space is required to generate a vmcore?
Environment
- Red Hat Openshift Container Platform (RHOCP)
- Red Hat CoreOS (RHCOS)
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