DevOps Production Troubleshooting & Interview Guide in 20 Minutes | Senior Engineer 2026
Learn how Senior DevOps Engineers, Platform Engineers and SRE professionals diagnose and resolve production incidents.
This 20-minute module provides a systematic troubleshooting framework covering Linux, networking, containers, Kubernetes, Jenkins, GitOps, AWS and monitoring.
Topics covered include:
Incident triage and severity assessment
Evidence preservation
Hypothesis-driven troubleshooting
Mitigation versus permanent resolution
Linux CPU, memory, disk and service failures
DNS, TCP, routing, TLS and firewall issues
Docker and container runtime problems
Jenkins pipeline and agent failures
Kubernetes Pending Pods
CrashLoopBackOff and ImagePullBackOff
Service, DNS, CNI and CSI failures
Helm and Argo CD troubleshooting
Prometheus and alerting failures
AWS IAM, EC2, ALB, Route 53 and EKS incidents
Root-cause analysis
Senior DevOps interview strategies
Use this lesson to prepare for scenario-based technical interviews and real production on-call responsibilities.
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