location ^~ /uploads/ {

        root /data/weiwend/weiwang;

        try_files $uri @new_uploads;

    }

    location @new_uploads {

        proxy_redirect off;

        proxy_set_header Host $host;

        proxy_set_header X-Real-IP $remote_addr;

        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        proxy_pass http://172.17.0.101:80;

    }

在负载均衡的容器里配置，try_files 失败转到另外一台容器