Admins

Extrait IRC #april-admin du 12/11/2018 :

16:08 < QGuLL> cpm_screen: https://serverfault.com/a/133699
16:10 < cpm_screen> voui
16:10 < QGuLL> voire : # mount -t ext2,ext3,ext4|while read i j; do tune2fs -l $i|sed -n '/[Mm]ount count/{s/.*: *//;p}'|(read c; read m; [ $m -gt 0 -a $m -le $c ] && echofsck,count,$i); c="$(tune2fs -l $i|sed -n '/Next check/{s/.*r: *//;p}')"; [ -z "$c" ] || ([ `date +%s` -ge `date -d"$c" +%s` ] && echo 
               fsck,time,$i); done
16:11 < cpm_screen> cette version est copier-coller-able

Autre proposition de QGull

for part in `mount -t ext4 | awk '{print $1}'`; do echo "Partition : $part";tune2fs -l $part | grep '\(Mount count\)\|\(Maximum mount count\)\|\(Last checked\)\|\(Check interval\)\|\(Next check after\)'; done

Adaptée à la seule partition de sauvegarde :

tune2fs -l /dev/mapper/guarana-backuppc--data | grep '\(Mount count\)\|\(Maximum mount count\)\|\(Last checked\)\|\(Check interval\)\|\(Next check after\)'

Ce qui donne :

(April) root@guarana:~48 tune2fs -l /dev/mapper/guarana-backuppc--data | grep '\(Mount count\)\|\(Maximum mount count\)\|\(Last checked\)\|\(Check interval\)\|\(Next check after\)'
Mount count:              2
Maximum mount count:      27
Last checked:             Mon Nov 12 15:51:25 2018
Check interval:           15552000 (6 months)
Next check after:         Sat May 11 16:51:25 2019

À votre place je ferai un script propre (python ?) et je l'intégrerais à nagios pour toutes les partitions des machines avec un signal warning si Mount count >= Maximum mount count ou si now >= Next check after.

En l'occurrence en python il y a pour plus de temps de le déployer et de le régler avec nagios que de l'écrire et le débugger.

pour me dégourdir les neurones :

import fileinput
import re
from datetime import datetime, timedelta

def parse(s):
    match = re.match(r'^(?P<int>\d+) \(.*\)$', s)
    if match:
        return parse(match.group('int'))
    try:
        return int(s)
    except:
        try:
            return datetime.strptime(s, '%c')
        except Exception as e:
            return s

tune2fs = {
        match.group('key'): parse(match.group('val'))
        for match in [
            re.match(r'^(?P<key>[^:]+):\s+(?P<val>.*)$', line)
            for line in fileinput.input()
        ]
        if match
}

try:
    # check mount count
    if tune2fs['Mount count'] >= tune2fs['Maximum mount count'] > 0:
        print("Mount count ({Mount count}) >= " 
              "Maximum mount count ({Maximum mount count})".format(**tune2fs))
        exit(1)
    # check fsck delay
    if tune2fs['Check interval'] and datetime.now() >= tune2fs['Last checked'] + timedelta(0, tune2fs['Check interval']):
        print("Fsck delay has been reached")
        exit(1)

except Exception as e:
    print(tune2fs)
    print(e)
    print('Internal error: contact your prefered devops')
    exit(3)

print('Mount count and Fsck delay are OK')
exit(0)

Pour l'usage :

francois@renard:~$ sudo tune2fs -l /dev/sda1 | python check_tune2fs.py 
Mount count and Fsck delay are OK
francois@renard:~$ ssh guarana tune2fs -l /dev/mapper/guarana-backuppc--data | python check_tune2fs.py 
Mount count and Fsck delay are OK

Je doute fort qu'un oneliner fasse mieux. :)

Script ajouté à /srv/scripts/common sur les hosts