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My nagios fail with fail2ban service. Whith an other command it's Ok:

nagios@server:/usr/lib/nagios/plugins$ /usr/local/nagios/libexec/check_nrpe -H 127.0.0.1 -c "check_load"

OK - load average: 0.00, 0.06, 0.08|load1=0.000;15.000;30.000;0; load5=0.060;10.000;25.000;0; load15=0.080;5.000;20.000;0;

With fail2ban service it don't work. This fail2ban script test this (see http://pastebin.com/1utP9iM6):

$(ps aux |grep "fail2ban.sock" |grep -v grep| wc -l)

If i test it with nagios user it correctly return 1. But when it's executed by NRPE it fail:

nagios@server:/usr/lib/nagios/plugins$ /usr/local/nagios/libexec/check_nrpe -H 127.0.0.1 -c "check_fail2ban" /var/log/fail2ban.log /etc/fail2ban/jail.conf 10 20

0

++++ Process is not running ++++

How can i debug more to found what is wrong ?

2

You could let the script log something to a file, e.g.:

ps aux > /tmp/debugfile

An alternative would be using the generic check_procs:

/usr/lib/nagios/plugins/check_procs -c 1:1 -C fail2ban-server
  • The ps output nothing for fail2ban. Thank's for "check_procs". I finally use it instead of my fail2ban script. – bux Jun 16 '14 at 14:05

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