网站页面能否正常访问脚本

#!/bin/sh
url="http://www.iotekclass.com"

server_status_code=`curl -o /dev/null -s -m 20 --connect-timeout 20 -w %{http_code} "$url"`

if [ "$server_status_code" = "302" ] || [ "$server_status_code" = "301" ] || [ "$server_status_code" = "200" ];then

echo "`date` visit tomcat status is OK"

else

echo "`date` error !!! The return value $server_status_code !!! server can't connect at 10s or stop response at 10 s.please check your tomcat servers"

echo " $server_status_code "

curl -I $url

exit 1

fi >> monitor.log