[维护笔记]Let’s Encrypt 证书更新错误

1.首次生成或更新Let’s Encrypt 证书时卡死在Installing Python packages
这是一些国内服务器容易出现的问题，需要修改pip源，网上搜到有4个源，但是只有一个能用（豆瓣的），其他的都有些小问题：

shellmkdir /root/.pip
cd /root/.pip
vi pip.conf

pip.conf:

[global]
trusted-host = pypi.douban.com
index-url = http://pypi.douban.com/simple

2.利用letsencrypt生成证书时 ,出现下面错误提示

Creating virtual environment...

Traceback (most recent call last):

File "/usr/lib/python3/dist-packages/virtualenv.py", line 2363, in <module>

main()

File "/usr/lib/python3/dist-packages/virtualenv.py", line 719, in main

symlink=options.symlink)

File "/usr/lib/python3/dist-packages/virtualenv.py", line 988, in create_environment

download=download,

File "/usr/lib/python3/dist-packages/virtualenv.py", line 918, in install_wheel

call_subprocess(cmd, show_stdout=False, extra_env=env, stdin=SCRIPT)

File "/usr/lib/python3/dist-packages/virtualenv.py", line 812, in call_subprocess

% (cmd_desc, proc.returncode))

OSError: Command /root/.local/share/letsencrypt/bin/python - setuptools pkg_resources pip wheel failed with error code 1

解决办法：
卸载virtualenv

pip uninstall virtualenv

安装virtualenv

pip install virtualenv

不过有的主机没有安装pip
会提示 安装Python-pip
安装完Python-pip在执行上面的语句