nginx+keepalived在ubuntu上实现负载均衡
来源:互联网 发布:windows nginx 403 编辑:程序博客网 时间:2024/06/05 17:24
nginx的安装及web服务配置见:http://wiki.ubuntu.org.cn/Nginx
一、nginx反向代理配置
打开/etc/nginx/nginx.conf配置文件,在http下加入:
upstream ip{ #对外虚拟IP
server IP1;
server IP2;
}
server{
listen 80;
server_name ip; #i对外虚拟IP
index index.php;index.html;index.htm;
location / {
proxy_pass http://ip;
}
}
二、keepalived的配置
1安装Keepalived
sudo apt-get install keepalived
2配置keepalived
将IP1作为负载均衡的主服务器,将IP2作为“从服务器”。这是通过配置文件中的priority来实现的。在“主服务器”上设置为:101,“从服务器”上设置为:100.
在IP1上,设置/etc/keepalived/keepalived.conf
$ sudo nano /etc/keepalived/keepalived.conf
vrrp_script chk_haproxy{
script "killall -0 haproxy"
interval 2
weight 2
}
vrrp_instance VI_1 {
interface eth0
state MASTER
virtual_router_id 51
priority 101 #101为“主”,100为“从”
virtual_ipaddress {
ip #对外虚拟IP
}
track_script {
chk_haproxy
}
}
运行keepalived服务
suto /etc/init.d/keepalived start
IP2和IP1的配置基本上一样,只需要把优先级该成:100
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