## 實例 配置上游服務器: ``` server { listen 8081; location / { return 200 '應用服務器1'; } } server { listen 8082; location / { return 200 '應用服務器2'; } } server { listen 8083; location / { return 200 '應用服務器3'; } } ``` 代理服務器配置: 默認的nginx代理服務器是使用輪詢算法的; ``` upstream back_end{ server 192.168.33.10:8081 weight=3; //權重最高 server 192.168.33.10:8082; server 192.168.33.10:8083; } server { listen 80; server_name website.com; charset utf-8; root html; location /balance { proxy_pass http://back_end; } ``` 結果: ``` ? nginx curl website.com/balance 應用服務器2 ? nginx curl website.com/balance 應用服務器1 ? nginx curl website.com/balance 應用服務器3 ? nginx curl website.com/balance 應用服務器1 ? nginx curl website.com/balance 應用服務器1 ? nginx curl website.com/balance 應用服務器2 ? nginx curl website.com/balance 應用服務器1 ? nginx curl website.com/balance 應用服務器3 ? nginx curl website.com/balance 應用服務器1 ```