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DevOps Upskilling for Job Switch
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Module 1
Production Troubleshooting Under Interview Pressure
1
Diagnosing Linux CPU Saturation Using Process, Load, and Scheduler Evidence
Diagnose CPU saturation on a Linux host using process, load, and scheduler evidence.
Diagnose CPU saturation on a Linux host using process, load, and scheduler evidence.
2
Diagnosing Linux Memory Exhaustion and OOM Kills
Diagnose memory exhaustion and OOM kills using Linux memory metrics and logs.
Diagnose memory exhaustion and OOM kills using Linux memory metrics and logs.
3
Tracing Failures with File Descriptors, System Calls, and Service Logs
Trace a failing process using file descriptors, system calls, and service logs.
Trace a failing process using file descriptors, system calls, and service logs.
4
Tracing the DNS Lookup Process
Trace a DNS lookup from an application through the operating system to its resolver.
Trace a DNS lookup from an application through the operating system to its resolver.
5
Diagnosing TCP Connectivity Failures with Network Evidence
Isolate a TCP connectivity failure using socket, routing, and packet-level evidence.
Isolate a TCP connectivity failure using socket, routing, and packet-level evidence.
6
Diagnosing TLS Handshake Failures with Certificate and Protocol Evidence
Isolate a TLS handshake failure using certificate and protocol evidence.
Isolate a TLS handshake failure using certificate and protocol evidence.
7
Tracing HTTP Failures Across the Request Path
Locate an HTTP failure across client, proxy, load balancer, and application layers.
Locate an HTTP failure across client, proxy, load balancer, and application layers.
8
Communicating Hypothesis-Driven Troubleshooting in Timed Interviews
Communicate a hypothesis-driven troubleshooting process during a timed interview scenario.
Communicate a hypothesis-driven troubleshooting process during a timed interview scenario.
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