# nginx 负载均衡配置
- 轮询（默认）
每个请求按时间顺序逐一分配到不同的后端服务器，如果后端服务器 down 掉，能自动剔除。
upstream my_server { | |
server 192.168.0.2:8080; | |
server 192.168.0.3:8080; | |
} | |
server { | |
listen 80; | |
server_name 192.168.0.1; | |
# Path to the root of your installation | |
location / { | |
proxy_pass http://my_server; | |
} | |
} |
- weight 权重策略
weight 代表权重，默认为 1，权重越高被分配的客户端越多，指定轮询几率。weight 和访问比率成正比，用于后端服务器性能不均的情况。
upstream my_server { | |
server 192.168.0.2:8080 weight=1; | |
server 192.168.0.3:8080 weight=2; | |
} | |
server { | |
listen 80; | |
server_name 192.168.0.1; | |
# Path to the root of your installation | |
location / { | |
proxy_pass http://my_server; | |
} | |
} |
- ip_hash
每个请求按访问 ip 的 hash 结果分配，这样每个访客固定访问一个后端服务器，可以解决 session 的问题。
upstream my_server { | |
ip_hash; | |
server 192.168.0.2:8080; | |
server 192.168.0.3:8080; | |
} | |
server { | |
listen 80; | |
server_name 192.168.0.1; | |
# Path to the root of your installation | |
location / { | |
proxy_pass http://my_server; | |
} | |
} |
- fair (第三方)
按后端服务器的响应时间来分配请求，响应时间短的优先分配。
upstream my_server { | |
server 192.168.0.2:8080; | |
server 192.168.0.3:8080; | |
fair; | |
} | |
server { | |
listen 80; | |
server_name 192.168.0.1; | |
# Path to the root of your installation | |
location / { | |
proxy_pass http://my_server; | |
} | |
} |
- 动静分离
把静态的资源，比如图片，css，js 等先加载到 Nginx 的服务器里。
