Configure load balance using Nginx 1.8 on CentOS 6.7
本教程使用Vultr的VPS搭建,准备三台VPS,一主两从
master - 45.32.90.100
slave1 - 45.32.92.47
slave2 - 45.32.89.205
1、安装Nginx
三台全装,并启动Nginx
/usr/local/nginx/sbin/nginx
2、修改master配置文件
在http段增加:
upstream backend {
server 45.32.92.47;
server 45.32.89.205;
}
在server的location段中加入:
proxy_pass http://backend;
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 -t
/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;
}
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