The Complete Guide to Setting Up Uptime Monitoring (Step by Step)

You know you need uptime monitoring. But where do you start? What should you monitor? How do you configure alerts that are actually useful?

This guide walks you through everything, from scratch, in plain English.

Step 1: Identify What to Monitor

Must-monitor: Homepage, Login/signup pages, API endpoints, Payment/checkout flow, Core features

Should-monitor: Marketing pages, Documentation, Blog, Status page, Third-party integrations

Step 2: Choose Your Check Types

• HTTP(S) Monitoring — Sends an HTTP request and checks response. Use for websites and APIs.
• Keyword Monitoring — Checks that the page contains expected content. Use for e-commerce and dynamic content.
• Ping Monitoring — ICMP ping to check host reachability. Use for servers and infrastructure.
• Port Monitoring — Checks if a specific port is open. Use for databases, mail servers, custom services.
• SSL Certificate Monitoring — Tracks certificate validity. Use for every HTTPS domain.
• Cron Job Monitoring — Expects heartbeat pings from scheduled jobs. Use for backups and data pipelines.

Step 3: Set Up Alert Channels

Severity	Channel	Example
Critical	SMS + PagerDuty	Payment API down
High	Slack + SMS	Main site down
Medium	Slack + Email	Blog down
Low	Email only	Response time elevated

Step 4: Create a Status Page

A public status page reduces support tickets during outages and builds trust through transparency.

Step 5: Test Everything

Trigger test alerts, verify SMS delivery, check Slack integration, simulate an outage.

Remember: monitoring is not "set and forget." It's a living system that grows with your infrastructure.