shell初学之nginx（负载均衡）

创建三个以域名区分的网站a.com，b.com，c.com；访问a、b时，分别显示a、b两个网站的内容；访问c时，会出现依次显示两次a网站的内容，一次b网站的内容。

 1 #!/bin/bash
 2 setenforce 0
 3 sed -i 's/=enforcing/=disabled/g' /etc/sysconfig/selinux
 4 systemctl start firewalld
 5 systemctl enable firewalld
 6 yum -y install epel-*
 7 yum -y install nginx
 8 IP=`ifconfig |grep broad|grep -w inet |awk '{print $2}'`
 9 mkdir -p /work/html_a /work/html_b
10 echo "aaaaaaaaaaaaaa" > /work/html_a/index.html
11 echo "bbbbbbbbbbbbbb" > /work/html_b/index.html
12 echo "$IP a.com" >> /etc/hosts
13 echo "$IP b.com" >> /etc/hosts
14 echo "$IP c.com" >> /etc/hosts
15 echo "
16  server {
17        listen      80;
18        server_name a.com;
19        location / {
20        root /work/html_a;
21        }
22 }
23  server {
24        listen      80;
25        server_name b.com;
26        location / {
27        root /work/html_b;
28        }
29 }
30  server {
31        listen      80;
32        server_name c.com;
33        location / {
34        proxy_pass    http://abc;
35        }
36 }
37  upstream abc {
38     server    127.0.0.1:81 weight=2;
39     server    127.0.0.1:82 weight=1;
40 }
41  server {
42        listen      81;
43        server_name a.com;
44        location / {
45        root /work/html_a;
46        }
47 }
48  server {
49        listen      82;
50        server_name b.com;
51        location / {
52        root /work/html_b;
53        }
54 }
55 " > /etc/nginx/conf.d/abc.conf
56 nginx -t
57 systemctl restart nginx
58 systemctl enable nginx
59 firewall-cmd --add-port=80/tcp --permanent
60 firewall-cmd --reload