Module: Heartbeat

Defined in:
lib/tools/heartbeat.rb

Overview

A heartbeat monitor

The heartbeat monitor watches various machine metrics (disk usage, CPU load, network traffic) and yields current measurements once a second.

Defined Under Namespace

Classes: Monitor

Class Method Summary collapse

Class Method Details

.monitor(cycle_length_seconds) ⇒ Object

This method yields hashes with these keys:

net_errors_1min:    ...   # network errors in the last minute
net_errors_5min:    ...   # network errors in the last 5 minutes
net_errors_15min:   ...   # network errors in the last 15 minutes
net_in_1min:        ...   # incoming network traffic in the last minute (bytes)
net_in_5min:        ...   # incoming network traffic in the last 5 minutes (bytes)
net_in_15min:       ...   # incoming network traffic in the last 15 minutes (bytes)
net_out_1min:       ...   # outgoing network traffic in the last minute (bytes)
net_out_5min:       ...   # outgoing network traffic in the last 5 minutes (bytes)
net_out_15min:      ...   # outgoing network traffic in the last 15 minutes (bytes)

uptime:             ...   # uptime (seconds)
cpu_load_1min:      ...   # cpu load
cpu_load_5min:      ...   # cpu load
cpu_load_15min:     ...   # cpu load

disk_used:          ...   # used disk space, over all disks
disk_available:     ...   # available disk space, over all disks




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# File 'lib/tools/heartbeat.rb', line 55

def self.monitor(cycle_length_seconds)
  monitor = Monitor.new(cycle_length_seconds)

  loop do
    measurement = monitor.measure
    do_continue = yield measurement
    break if do_continue == false
    monitor.sleep
  end
end