- #1、安装编译相关工具
- yum -y groupinstall “Development tools”
- yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel
- yum install libffi-devel -y
- #2、解压Python安装包
- tar -zxvf Python-3.8.5.tgz
- #3、编译、安装Python
- mkdir /usr/local/python3 #创建编译安装目录
- cd Python-3.8.5
- ./configure –prefix=/usr/local/python3
- make && make install
- #安装过，出现下面两行就成功了
- Installing collected packages: setuptools, pip
- Successfully installed pip-20.1.1 setuptools-47.1.0
- #4、创建软连接
- # 查看当前python软连接
- [root@node2 Python-3.8.5]# ll /usr/bin/ |grep python
- -rwxr-xr-x. 1 root root 11232 Aug 13 2019 abrt-action-analyze-python
- lrwxrwxrwx. 1 root root 7 May 17 11:36 python -> python2
- lrwxrwxrwx. 1 root root 9 May 17 11:36 python2 -> python2.7
- -rwxr-xr-x. 1 root root 7216 Aug 7 2019 python2.7
- #默认系统安装的是python2.7 删除python软连接
- rm -rf /usr/bin/python
- #配置软连接为python3
- ln -s /usr/local/python3/bin/python3 /usr/bin/python
- #这个时候看下python默认版本
- python -V
- #删除默认pip软连接，并添加pip3新的软连接
- rm -rf /usr/bin/pip
- ln -s /usr/local/python3/bin/pip3 /usr/bin/pip
- #5、更改yum配置
- #因为yum要用到python2才能执行，否则会导致yum不能正常使用（不管安装 python3的那个版本，都必须要做的）
- vi /usr/bin/yum
- 把 #! /usr/bin/python 修改为 #! /usr/bin/python2
- vi /usr/libexec/urlgrabber-ext-down
- 把 #! /usr/bin/python 修改为 #! /usr/bin/python2
- vi /usr/bin/yum-config-manager
- #!/usr/bin/python 改为 #!/usr/bin/python2
作者 admin
张宴银，大数据开发工程师