certbot 更新后出错：ImportError: cannot import name constants
服务器上的 certbot 许久未更新了，就执行了一下更新命令更新一下
# yum update certbot
Resolving Dependencies
--> Running transaction check
---> Package certbot.noarch 0:0.26.1-2.el7 will be updated
---> Package certbot.noarch 0:1.7.0-1.el7 will be an update
--> Processing Dependency: python2-certbot = 1.7.0-1.el7 for package: certbot-1.7.0-1.el7.noarch
--> Running transaction check
---> Package python2-certbot.noarch 0:0.26.1-2.el7 will be updated
---> Package python2-certbot.noarch 0:1.7.0-1.el7 will be an update
--> Processing Dependency: python2-acme >= 1.6.0 for package: python2-certbot-1.7.0-1.el7.noarch
--> Processing Dependency: python2-distro >= 1.0.1 for package: python2-certbot-1.7.0-1.el7.noarch
--> Running transaction check
---> Package python2-acme.noarch 0:0.26.1-1.el7 will be updated
---> Package python2-acme.noarch 0:1.7.0-1.el7 will be an update
---> Package python2-distro.noarch 0:1.2.0-3.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
==============================================================================================================================================================
Package Arch Version Repository Size
==============================================================================================================================================================
Updating:
certbot noarch 1.7.0-1.el7 epel 45 k
Installing for dependencies:
python2-distro noarch 1.2.0-3.el7 epel 29 k
Updating for dependencies:
python2-acme noarch 1.7.0-1.el7 epel 82 k
python2-certbot noarch 1.7.0-1.el7 epel 376 k
Transaction Summary
==============================================================================================================================================================
Install ( 1 Dependent package)
Upgrade 1 Package (+2 Dependent packages)
Total download size: 531 k
Is this ok [y/d/N]: y
Downloading packages:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
(1/4): certbot-1.7.0-1.el7.noarch.rpm | 45 kB 00:00:00
(2/4): python2-acme-1.7.0-1.el7.noarch.rpm | 82 kB 00:00:00
(3/4): python2-distro-1.2.0-3.el7.noarch.rpm | 29 kB 00:00:00
(4/4): python2-certbot-1.7.0-1.el7.noarch.rpm | 376 kB 00:00:00
--------------------------------------------------------------------------------------------------------------------------------------------------------------
Total 460 kB/s | 531 kB 00:00:01
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Updating : python2-acme-1.7.0-1.el7.noarch 1/7
Installing : python2-distro-1.2.0-3.el7.noarch 2/7
Updating : python2-certbot-1.7.0-1.el7.noarch 3/7
Updating : certbot-1.7.0-1.el7.noarch 4/7
Cleanup : certbot-0.26.1-2.el7.noarch 5/7
Cleanup : python2-certbot-0.26.1-2.el7.noarch 6/7
Cleanup : python2-acme-0.26.1-1.el7.noarch 7/7
Verifying : certbot-1.7.0-1.el7.noarch 1/7
Verifying : python2-distro-1.2.0-3.el7.noarch 2/7
Verifying : python2-certbot-1.7.0-1.el7.noarch 3/7
Verifying : python2-acme-1.7.0-1.el7.noarch 4/7
Verifying : python2-acme-0.26.1-1.el7.noarch 5/7
Verifying : certbot-0.26.1-2.el7.noarch 6/7
Verifying : python2-certbot-0.26.1-2.el7.noarch 7/7
Dependency Installed:
python2-distro.noarch 0:1.2.0-3.el7
Updated:
certbot.noarch 0:1.7.0-1.el7
Dependency Updated:
python2-acme.noarch 0:1.7.0-1.el7 python2-certbot.noarch 0:1.7.0-1.el7
Complete!检查一下更新后版本，发现运行不了：
# certbot --version
An unexpected error occurred:
ImportError: cannot import name constants
Please see the logfile '/tmp/tmpqWDMiB/log' for more details.打开 /tmp/tmpqWDMiB/log 看看，发现是 certbot 的 nginx 插件的问题：
2020-09-22 16:32:36,781:DEBUG:certbot._internal.log:Exiting abnormally:
Traceback (most recent call last):
File "/usr/bin/certbot", line 9, in <module>
load_entry_point('certbot==1.7.0', 'console_scripts', 'certbot')()
File "/usr/lib/python2.7/site-packages/certbot/main.py", line 15, in main
return internal_main.main(cli_args)
File "/usr/lib/python2.7/site-packages/certbot/_internal/main.py", line 1323, in main
plugins = plugins_disco.PluginsRegistry.find_all()
File "/usr/lib/python2.7/site-packages/certbot/_internal/plugins/disco.py", line 236, in find_all
plugin_ep = cls._load_entry_point(entry_point, plugins, with_prefix=False)
File "/usr/lib/python2.7/site-packages/certbot/_internal/plugins/disco.py", line 251, in _load_entry_point
plugin_ep = PluginEntryPoint(entry_point, with_prefix)
File "/usr/lib/python2.7/site-packages/certbot/_internal/plugins/disco.py", line 56, in __init__
self.plugin_cls = entry_point.load()
File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 2260, in load
entry = __import__(self.module_name, globals(),globals(), ['__name__'])
File "/usr/lib/python2.7/site-packages/certbot_nginx/configurator.py", line 17, in <module>
from certbot import constants as core_constants
ImportError: cannot import name constants
2020-09-22 16:32:36,781:ERROR:certbot._internal.log:An unexpected error occurred:
2020-09-22 16:32:36,781:ERROR:certbot._internal.log:ImportError: cannot import name constants看看 nginx 插件版本：
# rpm -qa|grep certbot
python2-certbot-nginx-0.26.1-1.el7.noarch
certbot-1.7.0-1.el7.noarch
python2-certbot-1.7.0-1.el7.noarch原来是 nginx 插件没更新到对应的版本，更新一下：
# yum update python2-certbot-nginx
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* epel-official: mirrors.tuna.tsinghua.edu.cn
* ius: mirrors.tuna.tsinghua.edu.cn
Resolving Dependencies
--> Running transaction check
---> Package python2-certbot-nginx.noarch 0:0.26.1-1.el7 will be updated
---> Package python2-certbot-nginx.noarch 0:1.7.0-1.el7 will be an update
--> Finished Dependency Resolution
Dependencies Resolved
==============================================================================================================================================================
Package Arch Version Repository Size
==============================================================================================================================================================
Updating:
python2-certbot-nginx noarch 1.7.0-1.el7 epel 77 k
Transaction Summary
==============================================================================================================================================================
Upgrade 1 Package
Total download size: 77 k
Is this ok [y/d/N]: y
Downloading packages:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
python2-certbot-nginx-1.7.0-1.el7.noarch.rpm | 77 kB 00:00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Updating : python2-certbot-nginx-1.7.0-1.el7.noarch 1/2
Cleanup : python2-certbot-nginx-0.26.1-1.el7.noarch 2/2
Verifying : python2-certbot-nginx-1.7.0-1.el7.noarch 1/2
Verifying : python2-certbot-nginx-0.26.1-1.el7.noarch 2/2
Updated:
python2-certbot-nginx.noarch 0:1.7.0-1.el7
Complete!大功告成：
# certbot --version
certbot 1.7.0