script to check if a server is up, requires httparty gem and ruby compiled with openssl, to install deps: rvm install ruby-1.9.3-p376 rvm package install openssl gem install httparty

check_server.rb

require 'net/smtp'
require 'httparty'
 
server_up = true
begin
  response = HTTParty.get("http://metricminer.org.br/")
rescue
  server_up = false 
end
server_up = false if not response.nil? and response.code != 200
 
exit if server_up
 
smtp = Net::SMTP.new 'smtp.gmail.com', 587
smtp.enable_starttls
 
msg = "Subject: MetricMiner down!\n\nMetricminer is down!"
 
smtp.start('gmail.com', 'metricminer', password, :login) do
  smtp.send_message(msg, 'metricminer@gmail.com', 'email@gmail.com', 'email2@gmail.com')
end

script to check if a server is up, requires httparty gem and ruby compiled with openssl, to install deps:

rvm install ruby-1.9.3-p376
rvm package install openssl
gem install httparty