ubuntu 记一种supervisor启动失败的原因

2022-11-23 乐帮网

ubuntu supervisor

迁移服务器时遇到错误：CRIT Supervisor is running as root. Privileges were not dropped because no user is specified in the config file. If you intend to run as root, you can set user=root in the config file to avoid this message.
表现为supervisor启动后并没有把子进程启动起来。通过以下命令行来排查：

root@ip-172-31-35-46:/var/log/nginx# systemctl status supervisor
● supervisor.service - Supervisor process control system for UNIX
     Loaded: loaded (/lib/systemd/system/supervisor.service; enabled; vendor preset: enabled)
     Active: active (running) since Mon 2022-11-21 13:20:12 UTC; 2h 13min ago
       Docs: http://supervisord.org
   Main PID: 1399 (supervisord)
      Tasks: 1 (limit: 1143)
     Memory: 14.7M
     CGroup: /system.slice/supervisor.service
             └─1399 /usr/bin/python3 /usr/bin/supervisord -n -c /etc/supervisor/supervisord.conf

Nov 21 13:20:12 ip-172-31-35-46 systemd[1]: Started Supervisor process control system for UNIX.
Nov 21 13:20:12 ip-172-31-35-46 supervisord[1399]: 2022-11-21 13:20:12,830 CRIT Supervisor is running as root.  Privileges were not dropped because no user is specifie>
Nov 21 13:20:12 ip-172-31-35-46 supervisord[1399]: 2022-11-21 13:20:12,835 WARN No file matches via include "/etc/supervisor/conf.d/*.conf"
Nov 21 13:20:12 ip-172-31-35-46 supervisord[1399]: 2022-11-21 13:20:12,839 INFO RPC interface 'supervisor' initialized
Nov 21 13:20:12 ip-172-31-35-46 supervisord[1399]: 2022-11-21 13:20:12,839 CRIT Server 'unix_http_server' running without any HTTP authentication checking
Nov 21 13:20:12 ip-172-31-35-46 supervisord[1399]: 2022-11-21 13:20:12,843 INFO supervisord started with pid 1399
lines 1-16/16 (END)

可以查看到关键词：CRIT Supervisor is running as root. Privileges were not dropped because no user is specified in the config file. If you intend to run as root, you can set user=root in the config file to avoid this message.

依希找到原因了，首先查看配置文件：
root@ip-172-31-35-46:/var/log/nginx# vi /etc/supervisor/supervisord.conf
从里面可以找到配置目录：/etc/supervisor/conf.d/ 然后进入目录

root@ip-172-31-35-46:/var/log/nginx# cd /etc/supervisor/conf.d/
root@ip-172-31-35-46:/etc/supervisor/conf.d# ls
dotnet_vkt.cms.web.conf

看到这个配置文件了么，是我迁移服务器从另一个地方复制过来，首先呢出于安全考虑root是不可能直接远程登录的，所以上传的时候这个配置文件所有权是另一个用户的，而我们启动supervisor时却设置的是root用户，问题产生，supervisor认为它不是一个安全的文件，因为所有权不一致。解决办法也简单如下：

chown root /etc/supervisor/conf.d/dotnet_vkt.cms.web.conf

我把这个文件所有权改成root，然后再启动就解决了。

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