nagiosnrpe

CHECK_NRPE Could not connect to....: Connect reset by peer in Nagios NRPE

Im working on opensuse Leap 42.1. I have installed NRPE on the remote host. I following precisely the installation guide. However, the deaemon runs:

netstat -at | egrep "nrpe|5666"
tcp        0      0 *:nrpe                  *:*                     LISTEN      
tcp        0      0 *:nrpe                  *:*                     LISTEN

But executing CHECK_NRPE gives me the following error:

/usr/local/nagios/lib/check_nrpe -H localhost
CHECK_NRPE: Error - Could not connect to ::e298:8aF0:2cdf:0: Connection reset by peer

I dont see what is the problem here. I tried the installation several times. Firewall is off, but that shouldn't be the problem. Haven't found the error anywhere else. What am I missing? Thanks

Solution

  • I had the same problem.

    Just, look the file: /etc/xinetd.d/nrpe

    Now, find (almost at beggining) the line that says

    "disable = yes"

    and simply change it to "no", then:

    # systemctl restart xinetd.service

    # systemctl restart nrpe or # service nrpe restart (if not systemd)

    Testing on debian 8 with last nrpe installation guide.

    Hope it helps!

    PS: Don't forget the directive.

    "only_from = (...)"

    EDIT:

    In the last NRPE installation on debian 8 you have to:

    Edit: /usr/local/nagios/etc/nrpe.cfg

    line 98: allowed_hosts=x.x.x.x

    And in the /etc/xinetd.d/nrpe let the directive "disable" in "yes". (default)

    It seems like nrpe service look at allowed hosts in /usr/local/nagios/etc/nrpe.cfg instead of /etc/xinetd.d/nrpe.

    Because in the /etc/xinetd.d/nrpe there is this line:

     server_args     = -c /usr/local/nagios/etc/nrpe.cfg --inetd

    Now, yes:

    # systemctl restart nrpe.service && systemctl restart xinetd.service