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python3.7安装后ssl问题-创新互联

pip3报错

安装python3.7.0后发现使用pip会出现如下报错：

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[root@localhost ~]# /usr/local/python3/bin/pip3 install virtualenv
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Collecting virtualenv
  Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/virtualenv/
  Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/virtualenv/
  Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/virtualenv/
  Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/virtualenv/
  Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/virtualenv/
  Could not fetch URL https://pypi.org/simple/virtualenv/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/virtualenv/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.")) - skipping
  Could not find a version that satisfies the requirement virtualenv (from versions: )
No matching distribution found for virtualenv
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Could not fetch URL https://pypi.org/simple/pip/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pip/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.")) - skipping

由于我的系统是CentOS release 6.7，所有openssl的版本为OpenSSL 1.0.1e-fips 11 Feb 2013,而python3.7需要的openssl的版本为1.0.2或者1.1.x,需要对openssl进行升级，并重新编译python3.7.0

升级openssl

1.下载最新版openssl

https://www.openssl.org/source/openssl-1.1.1-pre8.tar.gz

2.编译安装

cd openssl-1.1.1-pre8
./config --prefix=/usr/local/openssl no-zlib #不需要zlib
make
make install

3.备份原配置

[root@s2-hadoop-test ~]# mv /usr/bin/openssl /usr/bin/openssl.bak
[root@s2-hadoop-test ~]# mv /usr/include/openssl/ /usr/include/openssl.bak

4.新版配置

#将安装好的openssl 的openssl命令软连到/usr/bin/openssl
[root@s2-hadoop-test ~]# ln -s /usr/local/openssl/include/openssl /usr/include/openssl
#软链到升级后的libssl.so
[root@s2-hadoop-test ~]# ln -s /usr/local/openssl/lib/libssl.so.1.1 /usr/local/lib64/libssl.so

#将安装好的openssl命令软连到/usr/bin/openssl
ln -s /usr/local/openssl/bin/openssl /usr/bin/openssl

5.修改系统配置

#写入openssl库文件的搜索路径
echo "/usr/local/openssl/lib" >> /etc/ld.so.conf
#使修改后的/etc/ld.so.conf生效 
ldconfig -v

6.查看openssl版本

openssl version
OpenSSL 1.1.1-pre8 (beta) 20 Jun 2018

重新安装python

注意：需要指定openssl的安装路径，--with-openssl

./configure --prefix=/usr/local/python37 --with-openssl=/usr/local/openssl
make
make install

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