一. nagios监控nginx
1. 下载
wget http://www.monitoringexchange.org/attachment/download/Check-Plugins/Software/check_nginx-sh/check_nginx.sh -P /usr/local/nagios/libexec/
2. 修改拥有者和权限
chown nagios:nagios /usr/local/nagios/libexec/check_nginx.sh && chmod a+x /usr/local/nagios/libexec/check_nginx.sh
3. nrpe配置文件添加命令
vi /usr/local/nagios/etc/nrpe.cfg
command[check_nginx]=/usr/local/nagios/libexec/check_nginx.sh -H hostip -P port -p /usr/local/nginx -n nginx.pid
4. 重载nrpe
service nrpe restart
5. 编辑nagios服务器文件
vi /usr/local/nagios/etc/linuxjcq/linux.cfg
define service{
use local-service
host_name linuxjcq01
service_description 05. The Nginx Status
check_command check_nrpe!check_nginx
}
6. 重载nagios
service nagios restart
将其中的hostname修改成你配置文件中定义的主机名，重启nagios
service nagios restart
以下是我配置的部分截图，一般情况要可以查看nginx状态才行
check_nginx.sh 脚本内容
[root@fuyi02 ~]# cat /usr/local/nagios/libexec/check_nginx.sh
#!/bin/sh
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
PROGNAME=`basename $0`
VERSION="Version 1.1,"
AUTHOR="2009, Mike Adolphs (http://www.matejunkie.com/)"
ST_OK=0
ST_WR=1
ST_CR=2
ST_UK=3
hostname="localhost"
port=80
path_pid=/var/run
name_pid="nginx.pid"
status_page="nginx_status"
pid_check=1
secure=0
print_version() {
echo "$VERSION $AUTHOR"
}
print_help() {
print_version $PROGNAME $VERSION
echo ""
echo "$PROGNAME is a Nagios plugin to check whether nginx is running."
echo "It also parses the nginx's status page to get requests and"
echo "connections per second as well as requests per connection. You"
echo "may have to alter your nginx configuration so that the plugin"
echo "can access the server's status page."
echo "The plugin is highly configurable for this reason. See below for"
echo "available options."
echo ""
echo "$PROGNAME -H localhost -P 80 -p /var/run -n nginx.pid "
echo " -s nginx_statut -o /tmp [-w INT] [-c INT] [-S] [-N]"
echo ""
echo "Options:"
echo " -H/--hostname)"
echo " Defines the hostname. Default is: localhost"
echo " -P/--port)"
echo " Defines the port. Default is: 80"
echo " -p/--path-pid)"
echo " Path where nginx's pid file is being stored. You might need"
echo " to alter this path according to your distribution. Default"
echo " is: /var/run"
echo " -n/--name_pid)"
echo " Name of the pid file. Default is: nginx.pid"
echo " -N/--no-pid-check)"
echo " Turn this on, if you don't want to check for a pid file"
echo " whether nginx is running, e.g. when you're checking a"
echo " remote server. Default is: off"
echo " -s/--status-page)"
echo " Name of the server's status page defined in the location"
echo " directive of your nginx configuration. Default is:"
echo " nginx_status"
echo " -S/--secure)"
echo " In case your server is only reachable via SSL, use this"
echo " this switch to use HTTPS instead of HTTP. Default is: off"
echo " -w/--warning)"
echo " Sets a warning level for requests per second. Default is: off"
echo " -c/--critical)"
echo " Sets a critical level for requests per second. Default is:"
echo " off"
exit $ST_UK
}
while test -n "$1"; do
case "$1" in
-help|-h)
print_help
exit $ST_UK
;;
--version|-v)
print_version $PROGNAME $VERSION
exit $ST_UK
;;
--hostname|-H)
hostname=$2
shift
;;
--port|-P)
port=$2
shift
;;
--path-pid|-p)
path_pid=$2
shift
;;
--name-pid|-n)
name_pid=$2
shift
;;
--no-pid-check|-N)
pid_check=0
;;
--status-page|-s)
status_page=$2
shift
;;
--secure|-S)
secure=1
;;
--warning|-w)
warning=$2
shift
;;
--critical|-c)
critical=$2
shift
;;
*)
echo "Unknown argument: $1"
print_help
exit $ST_UK
;;
esac
shift
done
get_wcdiff() {
if [ ! -z "$warning" -a ! -z "$critical" ]
then
wclvls=1
if [ ${warning} -ge ${critical} ]
then
wcdiff=1
fi
elif [ ! -z "$warning" -a -z "$critical" ]
then
wcdiff=2
elif [ -z "$warning" -a ! -z "$critical" ]
then
wcdiff=3
fi
}
val_wcdiff() {
if [ "$wcdiff" = 1 ]
then
echo "Please adjust your warning/critical thresholds. The warning \
must be lower than the critical level!"
exit $ST_UK
elif [ "$wcdiff" = 2 ]
then
echo "Please also set a critical value when you want to use \
warning/critical thresholds!"
exit $ST_UK
elif [ "$wcdiff" = 3 ]
then
echo "Please also set a warning value when you want to use \
warning/critical thresholds!"
exit $ST_UK
fi
}
check_pid() {
if [ -f "$path_pid/$name_pid" ]
then
retval=0
else
retval=1
fi
}
get_status() {
if [ "$secure" = 1 ]
then
wget_opts="-O- -q -t 3 -T 3 --no-check-certificate"
out1=`wget ${wget_opts} http://${hostname}:${port}/${status_page}`
sleep 1
out2=`wget ${wget_opts} http://${hostname}:${port}/${status_page}`
else
wget_opts="-O- -q -t 3 -T 3"
out1=`wget ${wget_opts} http://${hostname}:${port}/${status_page}`
sleep 1
out2=`wget ${wget_opts} http://${hostname}:${port}/${status_page}`
fi
if [ -z "$out1" -o -z "$out2" ]
then
echo "UNKNOWN - Local copy/copies of $status_page is empty."
exit $ST_UK
fi
}
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