god_monitoring.rb

God::Contacts::Email.defaults do |d|
  d.from_email = '[email protected]'
  d.delivery_method = :sendmail
end

God.contact(:email) do |c|
  c.name = 'fguillen'
  c.group = 'admins'
  c.to_email = '[email protected]'
end

class God::Conditions::DiskUsage
  def test
    usage = `df -P | grep -i "^#{self.mount_point} " | awk '{print $5}' | sed 's/%//'`
    if usage.to_i > self.above
      self.info = "disk space out of bounds"
      return true
    else
      self.info = "disk space ok"
      return false
    end
  end
end

God.watch do |w|
  w.name = 'disk_space'
  w.interval = 30.minutes
  w.start = ''
  w.log = '/var/log/god.log'

  w.lifecycle do |on|
    on.condition(:disk_usage) do |c|
      c.above = 85
      c.mount_point = '/dev/sda1'
      c.notify = 'admins'
    end
  end
end