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@see kylemanna/systemd-utils
#!/usr/bin/env python
import os
import re
import sys
import json
import stat
import smtplib
import socket
import subprocess
from email.mime.text import MIMEText
def getjournal():
mode = os.fstat(0).st_mode
if stat.S_ISFIFO(mode):
sys.stderr.write("Reading from stdin\n")
return sys.stdin
args = ['journalctl', '-f', '-o', 'json']
#args = ['journalctl', '--boot', '-1', '-o', 'json']
sys.stderr.write("Forking %s\n" % str(args))
p = subprocess.Popen(args, stdout = subprocess.PIPE)
return iter(p.stdout.readline,'')
for line in getjournal():
if not line: break
# Attempt to work with python2 and python3
if isinstance(line, bytes): line = line.decode('utf-8')
j = json.loads('[' + line + ']');
if 'MESSAGE' in j[0] and 'entered failed state' in j[0]['MESSAGE']:
#print j[0]['MESSAGE']
# "Unit lvm2-pvscan@8:1.service entered failed state."
m ="^Unit (([\w:-]+)(\@([\w:-]+))?\.(\w+)) entered failed state\.$", j[0]['MESSAGE'])
if not m:
print("Event: %s" % str(m.groups()))
full_name = m.groups()[0]
#prefix_name = m.groups()[1]
#instance_name = m.groups()[3]
#systemd_type = m.groups()[4]
addr_from = addr_to = ""
body = subprocess.check_output(['systemctl', 'status', full_name])
except Exception as e:
body = "Exception: %s" % e
msg = MIMEText(body, _charset='utf-8')
msg['From'] = addr_from
msg['To'] = addr_to
msg['Subject'] = "[%s] systemd: Unit '%s' entered failed state" % (socket.gethostname(), full_name)
server = smtplib.SMTP('localhost')
server.sendmail(addr_from, addr_to, msg.as_string())
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