Check if Asterisk is running and notify by email if it's not.

gistfile1.rb

#!/usr/bin/ruby
require 'pony' #pony gem takes care of email
require 'syslog' #syslog logs to /var/log/syslog, the core log file for Ubuntu.
 
def log(msg)
  # $0 is the current script name
  Syslog.open($0, Syslog::LOG_PID | Syslog::LOG_CONS) { |s| s.warning msg }
end

ps=`ps ax`
#look for Asterisk in the list of running programs
exists = ps.include?("/usr/sbin/asterisk")
message = "Asterisk is running."
#skip all of this if asterisk is running...
unless exists
  message = "Asterisk is NOT running."
	begin
		Pony.mail({
  			:to => '[email protected]',
  			:from => '[email protected]',
  			:subject => 'Redial Asterisk is down',
  			:body => 'I can\'t find the asterisk process.  Please investigate',
  			:via => :smtp,
  			:via_options => {
    			:address              => 'smtp.gmail.com',
    			:port                 => '587',
    			:enable_starttls_auto => true,
    			:user_name            => 'your-gmail-username',
    			:password             => 'your-password',
    			:authentication       => :plain, # :plain, :login, :cram_md5, no auth by default
    			:domain               => "asterisk.yourserver.com" # the HELO domain provided by the client to the server
  			}
		})
	rescue Exception => e
		message = "Asterisk has failed and I can't send Email!  Help!"
	end
end
#log the status to syslog.
log message