Question

我有一个监控服务器的脚本，如果服务器不能ping，它会发送邮件警报。但是当我将脚本设置为cron作业时，由于无法识别ping命令，因此无法识别mailx命令时会抛出错误;而手动执行时则相同。

以下是脚本的代码

#!/bin/sh

cd `dirname $0`

serverIPs="192.0.0.40 192.0.0.140"

count=4

##checking the status by pinging the individual ips in serverIps variable

for host in $serverIPs
do
    recCount=$(ping -c $count $host | grep 'received' | awk -F',' '{ print $2 }' | awk '{ print $1 }')
    if [ $recCount -eq 0 ]; then
        # 100% failed 
            echo "Host : $host is down (ping failed) at $(date)" |mailx -s "Server is not responding completely " jagdeep.gupta@gmail.com
    elif [ $recCount -lt 4 ]
    then
        echo "Host : $host is not responding well there is loss of packets , please check " |mailx -s "Server is not responding partially " jagdeep.gupta@gmail.com
    fi
done

Answer 1

您的Cron守护程序可能会与$PATH变量一起刷新环境。尝试添加

export PATH=/bin:/usr/bin

在脚本的开头。（这应该足够了。如果没有，请检查echo $PATH的输出并将其用作值。）

在cron作业中放置时，无法识别shell中存在的命令

1 个答案: