解决错误：nginx: [emerg] unknown log format "main" in

重启nginx是出现了如下错误：

nginx: [emerg] unknown log format "proxy_log" in /usr/local/macports/etc/nginx/nginx.conf:147

解决办法：

打开nginx.conf，"main"错误是因为丢失了log_format选项，之前把他屏蔽掉了，修改之后问题解决。

user					             nginx nginx;
pid					             /var/log/nginx/nginx.pid;
worker_processes		    8;
worker_rlimit_nofile		    1024;
events {
	worker_connections     2048;
	use epoll;
 }
http {
	include				   mime.types;
	default_type		   application/octet-stream;

        log_format		main	'$remote_addr - $remote_user [$time_local] $request '
					'"$status" $body_bytes_sent "$http_referer" '
					'"$http_user_agent" "$http_x_forwarded_for" "$gzip_ratio"';access_log			off;
	error_log			   /var/log/nginx/error.log error;
        include				  localhost.conf;
}