Measuring Examples

body common control
{
      bundlesequence => { "report" };
}


body monitor control
{
      forgetrate => "0.7";
      histograms => "true";
}


bundle agent report
{
  reports:
      "
   Free memory read at $(mon.av_free_memory_watch)
   cf_monitord read $(mon.value_monitor_self_watch)   
   ";
}


bundle monitor watch
{
  measurements:

      # Test 1 - extract string matching

      "/home/mark/tmp/testmeasure"

      handle => "blonk_watch",
      stream_type => "file",
      data_type => "string",
      history_type => "weekly",
      units => "blonks",
      match_value => find_blonks,
      action => sample_min("10");

      # Test 2 - follow a special process over time
      # using cfengine's process cache to avoid resampling

      "/var/cfengine/state/cf_rootprocs"

      handle => "monitor_self_watch",
      stream_type => "file",
      data_type => "int",
      history_type => "static",
      units => "kB",
      match_value => proc_value(".*cf-monitord.*",
                                "root\s+[0-9.]+\s+[0-9.]+\s+[0-9.]+\s+[0-9.]+\s+([0-9]+).*");

      # Test 3, discover disk device information

      "/bin/df"

      handle => "free_disk_watch",
      stream_type => "pipe",
      data_type => "slist",
      history_type => "static",
      units => "device",
      match_value => file_system;
      # Update this as often as possible

      # Test 4

      "/tmp/file"

      handle => "line_counter",
      stream_type => "file",
      data_type => "counter",
      match_value => scanlines("MYLINE.*"),
      history_type => "log";

}


body match_value scanlines(x)
{
      select_line_matching => "^$(x)$";
}


body action sample_min(x)
{
      ifelapsed => "$(x)";
      expireafter => "$(x)";
}


body match_value find_blonks
{
      select_line_number => "2";
      extraction_regex => "Blonk blonk ([blonk]+).*";
}


body match_value free_memory # not willy!
{
      select_line_matching => "MemFree:.*";
      extraction_regex => "MemFree:\s+([0-9]+).*";
}


body match_value proc_value(x,y)
{
      select_line_matching => "$(x)";
      extraction_regex => "$(y)";
}


body match_value file_system
{
      select_line_matching => "/.*";
      extraction_regex => "(.*)";
}