ネットワークがちょくちょく落ちてるので。

Zabbixが入っているサーバのネットワークがちょくちょく落ちているので、

ネットワークインターフェースのUP/DOWNをチェックして、落ちていたら

立ち上げ直すスクリプトをcronに仕込んで5分おきにまわすことに。

 

 

 

#! /bin/bash

 

ETH1=`/sbin/ifconfig -s|grep eth0|cut -c-4`

 

if [ -z "$ETH1" ]; then

 

        /usr/bin/logger "Interface eth0 has gone."

        /etc/init.d/networking restart

        /usr/bin/logger "Restarting network..."

 

        ETH2=`/sbin/ifconfig -s|grep eth0|cut -c-4`

 

        if [ $ETH2 != "eth0" ]; then

 

                /usr/bin/logger "Failed to recover eth0."

 

        elif [ $ETH2 = "eth0" ]; then

 

                /usr/bin/logger "Recovered eth0!"

 

        fi

 

elif [ $ETH1 = "eth0" ]; then

 

        PING1=`/usr/bin/fping 192.168.1.1|grep alive`

 

        if [ -n "$PING1" ]; then

 

                /usr/bin/logger "eth0 is alive."

 

        elif [ -z "$PING1" ]; then

 

                /usr/bin/logger "eth0 is alive but unreachable to router."

                /etc/init.d/networking restart

                /usr/bin/logger "Restarting network..."

                PING2=`/usr/bin/fping 192.168.1.1|grep alive`

 

                if  [ -n "$PING2" ]; then

 

                        /usr/bin/logger "Recovered network!"

 

                elif  [ -z "$PING2" ]; then

 

                        /usr/bin/logger "eth0 is alive but something wrong with network."

 

                fi

 

        fi

 

fi

 

exit 0

 

 

ま、てきとうにこんな感じのスクリプトで。

# echo >> "0-59/5 *        * * *   root    cd / && run-parts /etc/cron.5minitesly"

# mkdir /etc/cron.5minitesly

して、/etc/cron.5minitesly にスクリプトを置いておく。

あと、chomod u+xも忘れずに。

これで5分以上ネットワークは落ちなくなったのですが、

サーバ自体がいつの間にか落ちていることも。。。

Zabbixサーバなのに。。

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