LB_nginx调度4和7案例

nginx1 　　:222   略

nginx2 　　:223   略

mysql_nfs   :22　略

LB_nginx    :21

/etc/nginx/nginx.conf 中添加4层代理

include /etc/nginx/L4.conf/*.conf;

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stream {
upstream ssh222 {
server 192.168.3.222:22;
}
upstream ssh223 {
server 192.168.3.223:22;
}
upstream ssh22 {
server 192.168.3.22:22;
}
upstream mysql {
server 192.168.3.22:3306;
}
server {
listen 9222;
proxy_pass ssh222;
proxy_connect_timeout 1s;           //链接超时时间
proxy_timeout 300s;　　　　　　//响应超时时间
}
server {
listen 9223;
proxy_pass ssh223;
proxy_connect_timeout 1s;
proxy_timeout 300s;
}
server {
listen 922;
proxy_pass ssh22;
proxy_connect_timeout 1s;
proxy_timeout 300s;
}
server {
listen 3306;
proxy_pass mysql;
proxy_connect_timeout 1s;
proxy_timeout 300s;
}
}

-----------------------------------------------------------------------------------------

[root@localhost ~]# cat /etc/nginx/conf.d/default.conf
upstream le {
server 192.168.3.223:80;
server 192.168.3.222:80;
}
upstream l {
server 192.168.3.223:81;
server 192.168.3.222:81;
}
server {
listen 80;
server_name www.le.com;
location / {
proxy_pass http://le;
include proxy_params;
}
}
server {
listen 80;
server_name www.l.com;
location / {
proxy_pass http://l;
include proxy_params;
}
}

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负载均衡配置端口相当于端口映射

 

 

 

 

负载均衡后端类型

down 关闭，不参与负载均衡

backup　　备份状态，其他都挂了这个就起来

max_fails　　最大链接超时

fail_timeout　　文件超时时间

max_conns　　链接超时后多少秒关闭

 

算法：

rr：轮询（默认）

wrr：加权轮询（默认weight=1，看设备性能设置）

ip_hash 根据ip分配

url_hash 根据url分配

least_conn 最少连接数分配

wlc 加权最少链接数

--------------------------------------------

L4用stream{}

L7用upstream{}