nginx负载算法 memcache实现会话保存

1,nginx负载算法

1,1 轮循

1,2加权轮循

1.3ip_hash(避免了会话问题)

2,使用memcache解决nginx负载后遗症---会话保存

[[email protected] etc]# cd /application/php-5.3.27/lib

[[email protected] lib]# sed -n "1461p" php.ini

session.save_handler = files

[[email protected] lib]# sed -n "1490p" php.ini

;session.save_path = "/tmp"

php会话共享配置:

session.save_handler = memcache

session.save_path = "tcp://memcache服务器ip" 如

session.save_path = "tcp://192.168.14.100:11211"

4,nginx负载配置

[[email protected] nginx]# cat conf/nginx.conf
worker_processes  1;
events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;
#加入upstream模块
    upstream bbs_server_pools{
        #ip_hash; 默认是轮循算法
        server 192.168.14.131:80;
        server 192.168.14.134:80;
    }

    include extra/bbs.conf;
    }

[[email protected]-LB nginx]# cat conf/extra/bbs.conf
server {
    listen       80;
    server_name  bbs.lanny.com;

    location / {
            proxy_pass http://bbs_server_pools;
            proxy_set_header Host        $host;
            proxy_set_header X-Forwarded-For $remote_addr;
            }
}