今天在用uwsgi+nginx在部署flask應(yīng)用時，遇到502的錯誤，vim /var/log/nginx/error.log查看nginx的錯誤日志，提示如下錯誤信息：

2018/07/22 00:46:36 [crit] 15890#15890: *74 connect() to unix:/root/jianshuvue/jianshu.sock failed (13: Permission denied) while connecting to upstream, client: 120.42.13.98, server: jianshu.weiweiblog.cn, request: "GET /favicon.ico HTTP/1.1", upstream: "uwsgi://unix:/root/jianshuvue/jianshu.sock:", host: "jianshu.weiweiblog.cn", referrer: "http://jianshu.weiweiblog.cn/jianshu/67eb7ed414d3"

Permission denied，一看就知道是權(quán)限出了問題，通過ps -ef | grep nginx,查看nginx的進(jìn)程信息：

root     15889     1  0 00:01 ?        00:00:00 nginx: master process /usr/sbin/nginx -g daemon on; master_process on;
www-data 15890 15889  0 00:01 ?        00:00:00 nginx: worker process
root     16795 15654  0 00:48 pts/3    00:00:00 grep --color=auto nginx

發(fā)現(xiàn)nginx進(jìn)程的用戶是nginx，而我們創(chuàng)建/root/jianshuvue/jianshu.sock文件的用戶是root，因此，只要把nginx的進(jìn)程user改為root即可，vim /etc/nginx/nginx.conf:

# user www-data;user root;worker_processes auto;pid /run/nginx.pid;

之后，/etc/init.d/nginx restart重啟nginx，就可以正常訪問網(wǎng)站了。

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