Created
September 15, 2013 16:01
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Send alert-email via Gmail when FreeNAS ZPool fails.
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#!/usr/bin/env python | |
# -*- coding: utf-8 -*- | |
import os | |
import sys | |
import socket | |
import smtplib | |
from email.MIMEText import MIMEText | |
from email.Header import Header | |
from email.Utils import formatdate | |
# ===================================== | |
# CONFIG | |
TEST = False | |
# Email settings | |
FROM = 'ENTER FROM-ADDRESS' # e.g. root@freenas.local | |
TO = 'ENTER TO-ADDRESS' # e.g. youename@gmail.com | |
# Gmail SMTP settings | |
LOGIN = 'ENTER GMAIL LOGIN ID' # e.g. yourname@gmail.com | |
PASSWORD = 'ENTER GMAIL LOGING PASSWORD ' | |
# Change the following list of the disks | |
DISKS = [ | |
'/dev/ada0', | |
'/dev/ada1', | |
'/dev/ada2', | |
'/dev/ada3', | |
] | |
# Usually you don't need to change the following settings | |
ZPOOLCMD = '/sbin/zpool' | |
SMARTCMD = '/usr/local/sbin/smartctl' | |
ZPOOL_FINEMSG = "all pools are healthy" | |
SMART_FINEMSG = "SMART overall-health self-assessment test result: PASSED" | |
class Gmailer(object): | |
_message = None | |
def __init__(self, from_addr, to_addr, subject, body, encoding): | |
msg = MIMEText(body, 'plain', encoding) | |
msg['Subject'] = Header(subject, encoding) | |
msg['From'] = from_addr | |
msg['To'] = to_addr | |
msg['Date'] = formatdate() | |
self._message = msg | |
def send_email(self, login, password): | |
try: | |
s = smtplib.SMTP('smtp.gmail.com', 587) | |
s.ehlo() | |
s.starttls() | |
s.ehlo() | |
s.login(login, password) | |
s.sendmail(self._message['From'], [self._message['To']], self._message.as_string()) | |
s.close() | |
except Exception, e: | |
print e | |
sys.exit(1) | |
# execute a command and return its output | |
def run_command(c): | |
try: | |
proc = os.popen(c) | |
out = proc.read().strip() | |
return out | |
except Exception, e: | |
print e | |
sys.exit(1) | |
# create a summary-text of failed-command's output and additional details | |
def create_summary(failed, details): | |
s = failed | |
s += "\n----------\n\n" | |
s += details | |
return s | |
def main(): | |
hostname = socket.gethostname() | |
# Zpool Status checking | |
zpool_status_x = run_command(ZPOOLCMD + " status -x") | |
if TEST or zpool_status_x.find(ZPOOL_FINEMSG) == -1: | |
zpool_status = run_command(ZPOOLCMD + " status") | |
text = create_summary(zpool_status_x, zpool_status) | |
subject = ' '.join(['[FreeNAS]', hostname, 'ZPool Status']) | |
mailer = Gmailer(FROM, TO, subject, text, 'utf-8') | |
mailer.send_email(LOGIN, PASSWORD) | |
# SMART checking | |
for disk in DISKS: | |
smart_health = run_command(SMARTCMD + ' --health ' + disk) | |
if TEST or smart_health.find(SMART_FINEMSG) == -1: | |
smart = run_command((SMARTCMD + ' --all ' + disk)) | |
text = create_summary(smart_health, smart) | |
subject = ' '.join(['[FreeNAS]', hostname, 'S.M.A.R.T.', disk]) | |
mailer = Gmailer(FROM, TO, subject, text, 'utf-8') | |
mailer.send_email(LOGIN, PASSWORD) | |
if __name__ == '__main__': | |
main() | |
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