$ cat /var/runbooks/README.md

KubeTriage

Actionable triage recipes for CrashLoopBackOff, OOMKilled 137, and CoreDNS failures in enterprise clusters.

Recent Posts

TOTAL: 2

Date	Subsystem	Incident Runbook & Triage Summary
Oct 25, 2026	Networking & DNS	Diagnosing and Fixing Kubernetes DNS 5-Second UDP Timeouts (CoreDNS & Conntrack Race) A deep production runbook for troubleshooting 5000ms DNS query timeouts, Linux kernel conntrack races, glibc single-request-reopen, NodeLocal DNSCache architecture, and CoreDNS auto-scaling.
Oct 25, 2026	Memory & Pod Triage	How to Diagnose and Fix Kubernetes OOMKilled Exit Code 137 in Production A comprehensive engineering runbook for troubleshooting container memory exhaustion, Linux cgroup v1 and v2 accounting, JVM and Go runtime limits, and Kubernetes QoS classes.

Date

Subsystem

Incident Runbook & Triage Summary

Oct 25, 2026

Networking & DNS

Diagnosing and Fixing Kubernetes DNS 5-Second UDP Timeouts (CoreDNS & Conntrack Race)

A deep production runbook for troubleshooting 5000ms DNS query timeouts, Linux kernel conntrack races, glibc single-request-reopen, NodeLocal DNSCache architecture, and CoreDNS auto-scaling.

Oct 25, 2026

Memory & Pod Triage

How to Diagnose and Fix Kubernetes OOMKilled Exit Code 137 in Production

A comprehensive engineering runbook for troubleshooting container memory exhaustion, Linux cgroup v1 and v2 accounting, JVM and Go runtime limits, and Kubernetes QoS classes.