check_http.rb

A mackerel-agent (or Nagios) plugin for HTTP

Usage

$ check_http.rb [-d MIN_DAYS] URL

MIN_DAYS is minimum number of days a certificate has to be valid. If the certificate is not valid after MIN_DAYS, a warning alert will be reported.

URL is the url to be checked. If an error occurs or the response code is not 2XX, a critical alert will be reported.

mackerel-agent configuration

Add the following configuration to mackerel-agent.conf:

[plugin.checks.tdiary]
command = "/path/to/check_http.rb -d 60 https://shugo.net/jit/"
notification_interval = 60
max_check_attempts = 2