Nginx+KeepAlive方案

机器规划和架构图

 

部署nginx负载均衡

配置nginx负载

　　安装nginx服务

[root@linux-node4 ~]# yum -y install nginx

配置反向代理

[root@lb-master ~]# vim /etc/nginx/nginx.conf 

stream {

​        log_format main '$remote_addr $upstream_addr - [$time_local] $status $upstream_bytes_sent'; 

​        access_log /var/log/nginx/django-access.log main; 

​        upstream django-apiserver { 

​                        server 192.168.56.62:80; 

​                        server 192.168.56.63:80; 

​                } 

​        server { 

​                    listen 88; 

​                    proxy_pass django-apiserver; 

​        } 

}

完整配置如下

看一下即可，都是nginx默认配置

http {

​        include         /etc/nginx/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     /var/log/nginx/access.log main; 

sendfile         on; 

#tcp_nopush         on; 

keepalive_timeout     65; 

#gzip     on; 

include     /etc/nginx/conf.d/*.conf; 


}

测试反向代理可用性

[root@lb-master ~]# vim /etc/keepalived/keepalived.conf 



global_defs { 

​    notification_email { 

​        acassen@firewall.loc 

​        failover@firewall.loc 

​        sysadmin@firewall.loc 

​    }

​    notification_email_from Alexandre.Cassen@firewall.loc 

​    smtp_server 127.0.0.1 

​    smtp_connect_timeout 30 

​    router_id NGINX_MASTER 

}

# 健康监测nginx 

vrrp_script check_nginx { 

​        script "/etc/keepalived/check_nginx.sh" # 设置检查nginx是否存活的脚本位置

}

# keepalive热备组配置 

vrrp_instance VI_1 { 

​        state MASTER # 配置当前keepalive为master角色 

​        interface eth0 # 网卡名字，必须和实际网卡名称一致，默认是ens33 

​        virtual_router_id 51 # VRRP 路由 ID实例，每个实例是唯一的 

​        priority 100 # 优先级，备服务器设置 90 

​        advert_int 1 # 指定VRRP 心跳包通告间隔时间，默认1秒 

​        authentication { 

​                auth_type PASS 

​                auth_pass 1111 # 设置keepalive的master和slave之间简单的秘钥认证 

​    }

​    virtual_ipaddress { 

​        192.168.56.60/24 # 设置keepalive虚拟IP地址 

​    }

​    track_script { 

​                check_nginx 

​    } 

}