# Samples

# TLS/SSL

Check if TLS/SSL settings of a URL are correct (guard against expired or soon expiring certificate, insecure ciphers, etc).

checkson-testssl-check

# Redirect

Validate if a HTTP Redirect works properly

checkson-redirect-check

# Docker Images Exist Check

Verify if Docker images in a Docker registry exist.

checkson-docker-image-exists-check

# PageSpeed Insights / Lighthouse Check

Use Google's PageSpeed Insights to monitor the performance / SEO-opimization / accessibility of a website.

checkson-pagespeed-check

# Slack

This check accesses the Slack API to request recent messages in a channel to determine if there were recent messages. We use this check to make sure that the Slack notification channel works.

checkson-slack-self-check

# Random Check

This check produces a random result, it will be OK in 50% of runs.

checkson-random-check

# Flapping Check

This check alternates between OK and CRITICAL using the persistence feature.

checkson-flapping-check