1.端口
本地：ss.netstat,lsof
远程：telnet,nmap.nc
2.本地进程数
3.header(http,curl),模拟用户的方式
4.URL(wget,curl).模拟用户的方式
5.php,java写监控的程序，模拟用户的方式(让开发提供)
范例判断条件
[root@XCN ~]# lsof -i :80|wc -l #本地端口
2
[root@XCN ~]# nmap 127.0.0.1 -p 80 #远程端口
Starting Nmap 5.51 ( http://nmap.org ) at 2017-06-28 14:13 CST
Nmap scan report for localhost (127.0.0.1)
Host is up (0.000080s latency).
PORT STATE SERVICE
80/tcp open http
Nmap done: 1 IP address (1 host up) scanned in 0.05 seconds
[root@XCN ~]# nmap 127.0.0.1 -p 80|wc -l
8
[root@XCN ~]# nmap 127.0.0.1 -p 80|grep open|wc -l
1
[root@XCN ~]# ps -ef|grep nginx |wc -l #进程
12
[root@XCN ~]# culr -I -s -w "%{http_code}" -o /dev/null 127.0.0.1
200 #curl
[root@XCN ~]# wget --spider --timeout=10 --tries=2 127.0.0.1 &>/dev/null
[root@XCN ~]# echo $? #wget看返回值
0案例shell
#!/bin/bash
http_code=`culr -I -s -w "%{http_code}" -o /dev/null 127.0.0.1`
if [ $http_code -ne 200 ]
then
echo "web is erro"
else
echo "web is ok"
fi
