Incident Response War Rooms
The pager just went off. You get a shell, a countdown, and an outage that only ends when you find the actual root cause.
Production SSH/Bastion Outage Debugging
Diagnose an intermittent SSH latency and connection timeout issue affecting engineers jumping from a bastion host to a production database VM.
Kubernetes Memory Eviction Cascade & CoreDNS Outage
Diagnose a critical payment gateway latency spike caused by a node-level memory eviction chain reaction and silent DNS packet drops.
Production Outages Masterclass — Structured Debugging for DevOps/SRE
The five categories production outages fall into, and a structured debugging framework that replaces guessing with an ordered elimination of layers.
Kubernetes War Room: Checkout API Pod Stuck in Pending
A checkout API pod sits in Pending and payments stall. Work the scheduler evidence to the real constraint before reaching for more nodes.
Kubernetes Outage Follow-Up: Structured Troubleshooting and RCA Writing
After the outage: a structured troubleshooting framework and how to write an RCA that survives review.
Production Outage: OSI-Layer Troubleshooting of a Bastion SSH Freeze
A bastion-to-production SSH freeze debugged layer by layer, from ICMP reachability up to the sshd configuration that caused it.
War Room Drill: Debugging a Production SSH/Bastion Outage
A production SSH/bastion outage worked end to end: symptom framing, blast radius, the login pipeline, and why the obvious fixes failed.
War Room Drill: SSH Bastion-to-Prod Outage, an OSI Walkthrough
A bastion-to-production SSH freeze debugged layer by layer, from ICMP reachability up to the sshd settings that caused the stall.
War-Room Production Outage Drill: Kubernetes Memory Eviction Cascade & CoreDNS Outage
Pods evicting in a cascade while CoreDNS degrades underneath — working the QoS classes and node pressure signals back to the real trigger.
Production Outage War Room: Triage Fundamentals
The five categories production outages fall into, and a triage sequence that narrows a vague “it is slow” to a subsystem fast.
War Room Drill: Kubernetes Pod Stuck in Pending
A checkout API pod stuck in Pending on EKS: ruling out the usual causes, finding three compounding root causes, and the scheduling concepts behind each.
War Room Drill Follow-Up: Solution, Debugging Framework and RCA Writing
Resolving a Kubernetes scheduling outage, then writing the RCA — plus the cluster security scanning that should have caught it earlier.