问题一 nginx: [emerg] open() "/etc/nginx/nginx.conf" failed (2: No such file or directory)

[root ~]# certbot certonly --nginx -d ikarp.top -d www.ikarp.top -d blog.ikarp.top
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Error while running nginx -c /etc/nginx/nginx.conf -t.

nginx: [emerg] open() "/etc/nginx/nginx.conf" failed (2: No such file or directory)
nginx: configuration file /etc/nginx/nginx.conf test failed

Could not choose appropriate plugin: The nginx plugin is not working; there may be problems with your existing configuration.
The error was: MisconfigurationError('Error while running nginx -c /etc/nginx/nginx.conf -t.\n\nnginx: [emerg] open() "/etc/nginx/nginx.conf" failed (2: No such file or directory)\nnginx: configuration file /etc/nginx/nginx.conf test failed\n',)
The nginx plugin is not working; there may be problems with your existing configuration.
The error was: MisconfigurationError('Error while running nginx -c /etc/nginx/nginx.conf -t.\n\nnginx: [emerg] open() "/etc/nginx/nginx.conf" failed (2: No such file or directory)\nnginx: configuration file /etc/nginx/nginx.conf test failed\n',)

解决问题:

1. 找到本地 nginx.conf

   [root ~]# locate nginx.conf
   /usr/local/nginx/conf/nginx.conf
   /usr/local/nginx/conf/nginx.conf.default

2. 创建软链

   [root ~]# ln -s /usr/local/nginx/conf/nginx.conf /etc/nginx/nginx.conf
   ln: failed to create symbolic link ‘/etc/nginx/nginx.conf’: No such file or directory
   # 缺少目录文件, 创建/etc/nginx
   [root ~]# mkdir -p /etc/nginx/
   # 再次创建软链
   [root ~]# ln -s /usr/local/nginx/conf/nginx.conf /etc/nginx/nginx.conf

问题二 nginx: [emerg] open() "/etc/nginx/mime.types" failed (2: No such file or directory) in /etc/nginx/nginx.conf:18

[root ~]# certbot certonly --nginx -d ikarp.top -d www.ikarp.top -d blog.ikarp.top
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Error while running nginx -c /etc/nginx/nginx.conf -t.

nginx: [emerg] open() "/etc/nginx/mime.types" failed (2: No such file or directory) in /etc/nginx/nginx.conf:18
nginx: configuration file /etc/nginx/nginx.conf test failed

Could not choose appropriate plugin: The nginx plugin is not working; there may be problems with your existing configuration.
The error was: MisconfigurationError('Error while running nginx -c /etc/nginx/nginx.conf -t.\n\nnginx: [emerg] open() "/etc/nginx/mime.types" failed (2: No such file or directory) in /etc/nginx/nginx.conf:18\nnginx: configuration file /etc/nginx/nginx.conf test failed\n',)
The nginx plugin is not working; there may be problems with your existing configuration.
The error was: MisconfigurationError('Error while running nginx -c /etc/nginx/nginx.conf -t.\n\nnginx: [emerg] open() "/etc/nginx/mime.types" failed (2: No such file or directory) in /etc/nginx/nginx.conf:18\nnginx: configuration file /etc/nginx/nginx.conf test failed\n',)

解决方式同上, 创建软链

[root ~]# locate mime.types
/etc/mime.types
/usr/local/nginx/conf/mime.types
/usr/local/nginx/conf/mime.types.default
[root ~]# ln -s /usr/local/nginx/conf/mime.types /etc/nginx/mime.types

结束

[root ~]# certbot certonly --nginx -d ikarp.top -d www.ikarp.top 
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator nginx, Installer nginx
Starting new HTTPS connection (1): acme-v02.api.letsencrypt.org
Requesting a certificate for ikarp.top and www.ikarp.top

IMPORTANT NOTES:
 - Congratulations! Your certificate and chain have been saved at:
   /etc/letsencrypt/live/ikarp.top/fullchain.pem
   Your key file has been saved at:
   /etc/letsencrypt/live/ikarp.top/privkey.pem
   Your certificate will expire on 2025-01-17. To obtain a new or
   tweaked version of this certificate in the future, simply run
   certbot again. To non-interactively renew *all* of your
   certificates, run "certbot renew"
 - If you like Certbot, please consider supporting our work by:

   Donating to ISRG / Let's Encrypt:   https://letsencrypt.org/donate
   Donating to EFF:                    https://eff.org/donate-le