CentOS 6.7配置Nginx 1.8负载均衡

master - 45.32.90.100
slave1  - 45.32.92.47
slave2  - 45.32.89.205

/usr/local/nginx/sbin/nginx

upstream backend {
server 45.32.92.47;
server 45.32.89.205;
}

proxy_pass http://backend;[/code] 
3、完整nginx.conf如下：

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;

events {
worker_connections  1024;
}

http {
include       mime.types;
default_type  application/octet-stream;

#log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
#                  '$status $body_bytes_sent "$http_referer" '
#                  '"$http_user_agent" "$http_x_forwarded_for"';

#access_log  logs/access.log  main;

sendfile        on;
#tcp_nopush     on;

#keepalive_timeout  0;
keepalive_timeout  65;

#gzip  on;

upstream backend {
server 45.32.92.47 weight=2;
server 45.32.89.205;
}

server {
listen       80;
server_name  localhost;

#charset koi8-r;

#access_log  logs/host.access.log  main;

location / {
root   html;
index  index.html index.htm;

proxy_pass http://backend; }

#error_page  404              /404.html;

# redirect server error pages to the static page /50x.html
#
error_page   500 502 503 504  /50x.html;
location = /50x.html {
root   html;
}
}
}


4、重启master上的nginx

/usr/local/nginx/sbin/nginx -s reload


5、验证

在slave1中修改网页文件

echo "slave1" > /usr/local/nginx/html/index.html


在slave2中修改网页文件

echo "slave2" > /usr/local/nginx/html/index.html


在浏览器中输入master的ip，刷新查看，可以看到交替出现slave1和slave2

此外，还可以设置权重

upstream backend {
server 45.32.92.47 weight=2;
server 45.32.89.205 weight=1;
}