nagios插件编写及使用nrpe执行root命令
#!/bin/bash# ========================================================================================
# disk healthplugin for Nagios
#
# Written by : Ajian
#>
# Creation date : 2009-07-28
# Revision date : 2009-07-30
# Description : Nagios plugin (script) to check disk health .
# This script has been designed and written on Linux System.
#
# USAGE : ./check_disk_health.sh [-d (disk)]
#
# Exemple: ./check_cpu_stats.sh
# ./check_cpu_stats.sh -d /dev/sda
#
#
# HISTORY :
# >
# --------------+---------------+----------------------+-----------------------------------
#1.0.0 | 2009-07-28 | Ajian | Create the script
#1.2.0 | 2009-07-30 |Ajian | modify the script and run well ,fix a bug.
# -----------------------------------------------------------------------------------------
# NOTICE:
#-----------------------------------------------------------------------------------------
# You should have the root Permissions ,You can use sudo to realize .
# -----------------------------------------------------------------------------------------
# Nagios return codes
#定义 nagios返回的状态变量
STATE_OK=0
STATE_WARNING=1
STATE_CRITICAL=2
STATE_UNKNOWN=3
# Paths to commands used in this script.These may have to be modified to match your system setup.
# 定义关键的核心命令smartctl 路径 如果你的系统不是这个地址，请更改。 以下注释的是调试的信息，是自动获取命令路径的方法。
SMARTCTL="/usr/sbin/smartctl"
#SMARTCTL=`which smartctl`
#if [ $? -ne 0 ]; then
# echo " smartctl is found in $SMARTCTL ; Go on ... "
# echo "smartctl the command cannot find"
# exit $STATE_UNKNOWN
#fi
# Plugin parameters value if not define
# 定义默认的检测硬盘
CHECK_DISK="/dev/sda"
# Plugin variable description
# 插件描述信息
PROGNAME=$(basename $0)
RELEASE="Revision 1.2.0"
AUTHOR="(c) 2009 Ajian (ajian521@gmail.com)"
# Functions plugin usage
# 插件的使用方法函数
print_release() {
echo "$RELEASE $AUTHOR"
}
print_usage() {
echo ""
echo "$PROGNAME $RELEASE - Disk health check script for Nagios"
echo ""
echo "Usage: check_disk_health.sh -d /dev/sdb"
echo ""
echo "-dthe disk (/dev/sda) "
echo " not the Hard disk partition(sda2 is wrong)"
echo "-vcheck the version"
echo "-hShow this page"
echo ""
echo "Usage: $PROGNAME"
echo "Usage: $PROGNAME --help"
echo ""
exit 0
}
print_help() {
print_usage
echo ""
echo "This plugin will check disk health"
echo ""
exit 0
}
# Parse parameters
# 传递参数
while [ $# -gt 0 ]; do
case "$1" in
-h | --help)
print_help
exit $STATE_OK
;;
-v | --version)
print_release
exit $STATE_OK
;;
-d | --disk)
shift
CHECK_DISK=$1
#判断磁盘是否存在
if [ ! -b $CHECK_DISK ];then
echo "$CHECK_DISK is no exsit,Please change it "
exit $STATE_CRITICAL
fi
;;
*)echo "Unknown argument: $1"
print_usage
exit $STATE_UNKNOWN
;;
esac
shift
done
＃根据不同的操作进行不同的操作，这里暂时只支持Linux
case `uname` in
Linux )
#最核心的部分 前面都是些脚本的基本功能 一个框架 因为第一个脚本牵扯到了很多东西，虽然功能很简单，
#但折腾了我不少，在后面的分析中会具体说到 总之注意sudo用法 脚本一开始就有说哦
DISK_HEALTH=`$SMARTCTL-H $CHECK_DISK | tail -1 | cut -d: -f2- `
#DISK_HEALTH="OK"
# DISK_INFO=`/usr/bin/sudo $SMARTCTL -i $CHECK_DISK | grep "Device:"`
if [ "$DISK_HEALTH" = " OK" ]|| ["$DISK_HEALTH" = " PASSED" ];then
echo "OK - $CHECK_DISK status is $DISK_HEALTH "
#echo "OK - $CHECK_DISK status is $DISK_HEALTH | $DISK_INFO"
exit $STATE_OK
else
echo "CRITICAL - $CHECK_DISK status is $DISK_HEALTH "
#echo "CRITICAL - $CHECK_DISK status is $DISK_HEALTH | $DISK_INFO"
exit $STATE_CRITICAL
fi
;;
*) echo "UNKNOWN: `uname` not yet supported by this plugin. Coming soon !"
exit $STATE_UNKNOWN
;;
esac
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