Mission 295

Capstone website outage

Investigate a website outage using service, config, logs, and listeners.

Capstone labs
8 minutes Capstone Lesson 295 of 360
systemctlnginxtailss
Lesson 295 of 360 0/360 lessons 0/17 missions Capstone labs · 8 minutes
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learner@clairos:/home/learner $ Unix ops lab: type a command, press Enter
Instructions 8 minutes

Click any instruction for the command details, the why, and the common mistake to avoid.

Check nginx

Run systemctl status nginx.

systemctl status nginx
Validate nginx

Run nginx -t.

nginx -t
Read errors

Run tail -n 2 /var/log/nginx-error.log.

tail -n 2 /var/log/nginx-error.log
Check listeners

Run ss -tulpn.

ss -tulpn
Lesson support

What to notice while you play.

Objective

Investigate a website outage using service, config, logs, and listeners.

Hint

Run the commands in order and compare the outputs.

Why it matters

Junior operators build confidence by gathering evidence before changing systems.

Common mistakes
  • Skipping the inspection step.
  • Assuming one command tells the whole story.
Reference

Commands in this lesson.

systemctl status <service>

Inspect simulated service status.

nginx -t

Validate training nginx configuration.

ss|ip

Inspect simulated sockets and addresses.

ssh|scp|ssh-keygen

Practice SSH inspection and dry-run transfer shapes without network access.