Checkup is a simple service up check. Currently only supports http check and mail notification.

Sample configuration file:

Checkup::Model.new(:foo, 'foo') do
  service Http do |service|
    service.url = 'http://example.de'
    service.method = :get
    service.expected_code = 200
    service.expected_response = /.+html.+/
  end

  notify_with Mail do |mail|
    mail.delivery_method      = :sendmail
    mail.from                 = 'info@example.de'
    mail.to                   = 'bar@example.de'

    mail.on_success = true
    mail.on_warning = true
    mail.on_failure = true
  end
end

You can execute this via:

checkup perform -r /path/to/models -t foo

With whenever, you can create a crontab to use this regulary:

every 5.minutes do
  command "checkup perform -r /var/checkup -t foo"
end

This can be added to the crontab of the current user with whenever --update-crontab.