如何在负载均衡服务器上配置日志和监控？

http {
    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;
    error_log /var/log/nginx/error.log;

    # 其他配置...
}

http {
    # 其他配置...

    server {
        listen 80;
        server_name localhost;

        location /nginx_status {
            stub_status on;
            access_log off;
            allow 127.0.0.1;
            deny all;
        }
    }
}

sudo service nginx restart