检查nginx反向代理节点状态

#!/bin/sh
rslist=($(grep 10.0.0 /application/nginx/conf/extra/upstream01.conf |awk -F "[ :]""{print $2}"))
for ((i=0;i<${#rslist[*]};i++))
do 
  portnum = `nmap ${rslist[i]} -p 80|grep open |wc -l`
  if [ $portnum -eq 1 ];then
    echo "${rslist[i]} up"
  else 
    echo "${rslist[i]} down"

  fi
done