Package: nagios-nrpe-server
Version: 2.12-4
Severity: minor
On a server that hosts virtual servers running inside LXC containers I found
the following issue:
Executing "/etc/init.d/nagios-nrpe-server stop" on the underlying host stops
all NRPE daemons, the one
of the underlying host as well as all NRPE daemons running inside LXC
containers.
I would expect "/etc/init.d/nagios-nrpe-server stop" to not stop NRPE daemons
running inside LXC
containers but to only stop the underlying host's NRPE daemon.
"ps aux | grep nrpe" output of the underlying host:
nagios 1447 0.0 0.0 24740 1144 ? Ss 20:39 0:00 /usr/sbin/nrpe
-c /etc/nagios/nrpe.cfg -d
101 16768 0.0 0.0 24740 1108 ? Ss 17:49 0:00 /usr/sbin/nrpe
-c /etc/nagios/nrpe.cfg -d
PID 1447 is the host's NRPE daemon, 16768 is an LXC container's NRPE daemon.
101 is the uid of the nagios
user inside this LXC container.
Running "/etc/init.d/nagios-nrpe-server stop" seems to kill both these NRPE
daemons due to --exec being
used. I have substituted --pidfile $PIDDIR/nrpe.pid for --exec $DAEMON and
moved deletion of the pid
file to the start) section as a work-around. Works for me but is not thoroughly
tested. There may be
side effects I am not aware of.
Here is how I patched the init script:
--- nagios-nrpe-server.orig 2011-08-27 18:11:24.000000000 +0200
+++ nagios-nrpe-server 2011-08-27 20:56:28.000000000 +0200
@@ -46,8 +46,6 @@
chown nagios "$PIDDIR"
fi
-test -e $PIDDIR/nrpe.pid && rm $PIDDIR/nrpe.pid
-
set -e
case "$1" in
@@ -55,18 +53,19 @@
if [ "$INETD" = 1 ]; then
exit 1
fi
+ test -e $PIDDIR/nrpe.pid && rm $PIDDIR/nrpe.pid
log_daemon_msg "Starting $DESC" "$NAME"
start_daemon $NICENESS $DAEMON -c $CONFIG -d $DAEMON_OPTS
log_end_msg $?
;;
stop)
log_daemon_msg "Stopping $DESC" "$NAME"
- start-stop-daemon --stop --quiet --oknodo --exec $DAEMON
+ start-stop-daemon --stop --quiet --oknodo --pidfile $PIDDIR/nrpe.pid
log_end_msg $?
;;
reload|force-reload)
log_daemon_msg "Reloading $DESC configuration files" "$NAME"
- start-stop-daemon --stop --signal HUP --quiet --exec $DAEMON
+ start-stop-daemon --stop --signal HUP --quiet --pidfile $PIDDIR/nrpe.pid
log_end_msg $?
;;
restart)
-- System Information:
Debian Release: 6.0.2
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.39-bpo.2-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages nagios-nrpe-server depends on:
ii adduser 3.112+nmu2 add and remove users and groups
ii libc6 2.11.2-10 Embedded GNU C Library: Shared lib
ii libssl0.9.8 0.9.8o-4squeeze1 SSL shared libraries
ii libwrap0 7.6.q-19 Wietse Venema's TCP wrappers libra
ii lsb-base 3.2-23.2squeeze1 Linux Standard Base 3.2 init scrip
Versions of packages nagios-nrpe-server recommends:
ii nagios-plugins 1.4.15-3squeeze1 Plugins for the nagios network mon
ii nagios-plugins-basic 1.4.15-3squeeze1 Plugins for the nagios network mon
nagios-nrpe-server suggests no packages.
-- Configuration Files:
/etc/init.d/nagios-nrpe-server changed [not included]
/etc/nagios/nrpe.cfg changed [not included]
/etc/nagios/nrpe_local.cfg changed [not included]
-- no debconf information
--
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