Class: Appserver::Monit

Inherits:
Struct
  • Object
show all
Defined in:
lib/appserver/monit.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(server_dir) ⇒ Monit

Returns a new instance of Monit.



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# File 'lib/appserver/monit.rb', line 8

def initialize (server_dir)
  self.server_dir = server_dir
end

Instance Attribute Details

#server_dir ⇒ Object

Returns the value of attribute server_dir

Returns:

  • (Object) —

    the current value of server_dir



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# File 'lib/appserver/monit.rb', line 2

def server_dir
  @server_dir
end

Class Method Details

.write_config(server_dir) ⇒ Object 



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# File 'lib/appserver/monit.rb', line 4

def self.write_config (server_dir)
  new(server_dir).write_config
end

Instance Method Details

#write_config ⇒ Object 



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# File 'lib/appserver/monit.rb', line 12

def write_config
  Utils.safe_replace_file(server_dir.monit_conf) do |f|
    f.puts "# Monit configuration automagically generated by the \"appserver\" gem using"
    f.puts "# the appserver directory config #{server_dir.config_file}"
    f.puts "# Include this file into your system's monitrc (using an include statement)"
    f.puts "# to use it. See http://github.com/zargony/appserver for details."
    # Let Monit reload itself if this configuration changes
    f.puts "check file monit_conf with path #{server_dir.monit_conf}"
    f.puts "  if changed checksum then exec \"#{server_dir.monit_reload}\""
    # Reload Nginx if its configuration changes
    f.puts "check file nginx_conf with path #{server_dir.nginx_conf}"
    f.puts "  if changed checksum then exec \"#{server_dir.nginx_reload}\""
    # Add application-specific Monit configuration
    server_dir.apps.each do |app|
      f.puts ""
      f.puts "# Application: #{app.name}"
      if app.pid_file && app.start_server?
        cyclecheck = app.usage_check_cycles ? " for #{app.usage_check_cycles} cycles" : ''
        f.puts "check process #{app.name} with pidfile #{app.pid_file}"
        f.puts "  start program = \"#{server_dir.appserver_cmd('start', app.name)}\""
        f.puts "  stop program = \"#{server_dir.appserver_cmd('stop', app.name)}\""
        f.puts "  if totalcpu usage > #{app.max_cpu_usage}#{cyclecheck} then restart" if app.max_cpu_usage
        f.puts "  if totalmemory usage > #{app.max_memory_usage}#{cyclecheck} then restart" if app.max_memory_usage
        f.puts "  if failed unixsocket #{app.socket} protocol http request \"/\" timeout #{app.http_check_timeout} seconds then restart" if app.http_check_timeout
        f.puts "  if 5 restarts within 5 cycles then timeout"
        f.puts "  group appserver"
        f.puts "check file #{app.name}_revision with path #{app.revision_file}"
        f.puts "  if changed checksum then exec \"#{server_dir.appserver_cmd('restart', app.name)}\""
      end
    end
  end
end