shell脚本死循环检查是否有特定的路由，若存在进行删除操作

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while [ 1 ]

 

do

  tun0_route=`ip route |grep -ci "100.100.80.0"`

   

  if [ $tun0_route -eq 0 ];then

   

    echo "ip route for 100.100.80.0/24 via dev tun0 is not exist, it's normal status " >> /tmp/tun0_route.log

     

  else

    echo "ip route for 100.100.80.0/24 via dev tun0  is exist which cause k8s imagepullbackoff error , it would be deleted"

     

    ip route delete  100.100.80.0/24  via 10.8.0.85

   

  fi

 

  sleep 60

done

　　

并加入开机启动 ：

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[root@k8s-node01 home]# cat /etc/rc.local

 

 

sh /home/tun0_route_monitor.sh & > /dev/null 2>&1