check-raid.py

#!/usr/bin/env python
# encoding: utf-8
"""

Created by Preston Holmes on 2010-01-07.
[email protected]
Copyright (c) 2010

Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:

The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
"""
from __future__ import with_statement

import sys
import os
from subprocess import Popen, call, STDOUT, PIPE
import time

# CONFIG:
SENDER = '[email protected]'
SENDER_PASS = 'secret'
RECIPIENT_OK = '[email protected]'
ADDITIONAL_DEGRADED_RECIP = '[email protected]'
SMTP_SERVER = "smtp"

def touch(fname, times = None):
    with file(fname, 'a'):
        os.utime(fname, times)

def sh(cmd):
    return Popen(cmd,shell=True,stdout=PIPE,stderr=PIPE).communicate()[0]

def send_alert(body):
    from email.MIMEText import MIMEText
    import smtplib,sys

    ok_check = '/tmp/raidok'
    
    msg = MIMEText(body)

    mfrom = "[email protected]"
    if 'degraded' in body.lower():
        to = "%s,%s" % (RECIPIENT_OK,ADDITIONAL_DEGRADED_RECIP)
        msg['Subject'] = "RAID DEGRADED"
    else:
        to = RECIPIENT_OK
        msg['Subject'] = "RAID OK"
        if os.path.exists(ok_check):
            mtime = os.path.getmtime(ok_check)
            now = time.time()
            if now-mtime < (60*60*24):
                sys.exit()
        touch (ok_check)
    msg['From'] = SENDER
    msg['To'] = to
    
    server = smtplib.SMTP(SMTP_SERVER,587)

    # server.set_debuglevel(1)
    server.ehlo()
    server.starttls()
    server.ehlo()
    server.login(SENDER,SENDER_PASS)


    server.sendmail(SENDER,to.split(','),msg.as_string())
    server.quit
    


def main():
    raid_check = sh("raidutil list status")
    if "degraded" in raid_check.lower():
        send_alert('''RAID DEGRADED on %s
        ''' % sh("hostname"))
        print "Alert Sent"
    else:
        send_alert('''RAID OK on %s
        ''' % sh("hostname"))
        print "OK"
    sys.exit()

if __name__ == '__main__':
    main()