Created
September 1, 2017 18:29
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SMART collection script for DataDog
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| #! /usr/bin/env python | |
| # coding: utf8 | |
| """ | |
| Publish metrics from `smartctl` output: | |
| * temp.DISK = celsius | |
| * | |
| Also publish these events when they occur: | |
| * SMART 5 - Reallocated_Sector_Count. | |
| * SMART 187 - Reported_Uncorrectable_Errors. | |
| * SMART 188 - Command_Timeout. | |
| * SMART 197 - Current_Pending_Sector_Count. | |
| * SMART 198 - Offline_Uncorrectable | |
| """ | |
| import sys, time, os, re, subprocess | |
| from datadog.statsd import statsd | |
| def output(disk): | |
| """Return raw output of `smartctl -x DISK`. | |
| Raise Exception when: | |
| * there is any error output | |
| * return status is not successful (ie not 0) | |
| * smartctl executable not found | |
| * DISK does not exist | |
| """ | |
| if os.system('which smartctl > /dev/null') != 0: | |
| raise Exception("Failed to find `smartctl` executable") | |
| if not os.path.exists(disk): | |
| raise Exception("Disk does not exist: {}".format(disk)) | |
| p = subprocess.Popen(['smartctl', '-x', disk], | |
| stdout=subprocess.PIPE, | |
| stderr=subprocess.PIPE) | |
| status = p.wait() | |
| err = p.stderr.read() | |
| if err or status != 0: | |
| raise Exception("Failed to execute `smartctl`: status={}, stderr={}".format(status, err)) | |
| return (i.strip() for i in p.stdout.readlines()) | |
| def parsed(disk, lines): | |
| """Yield (name,value,line) for each numeric data point. | |
| """ | |
| for line in lines: | |
| fields = line.split() | |
| if len(fields) < 3: | |
| continue | |
| if fields[1] == 'Temperature_Celsius': | |
| name = "temp.{}".format(disk) | |
| val = float(fields[7]) | |
| statsd.gauge(name, val) | |
| yield (name, val, line) | |
| for disk in sys.argv[1:]: | |
| for name, val, line in parsed(disk, output(disk)): | |
| # Print in datadog-friendly log format | |
| print("{} {} {}".format(name, int(time.time()), val)) |
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