CentOS誤刪 ython2.7，不能使用yum，重新安裝python
阿新 • • 發佈：2019-03-14
借鑑部落格：
https://blog.csdn.net/qq_36653942/article/details/80712088
場景：
誤刪usr/lib/python包，不能使用yum。
主機版本：7.4.1708
建立目錄python和yum用以存放rpm包：
備註：到http://vault.centos.org/7.4.1708/os/x86_64/Packages下找到對應版本
7.4.1708：為centos版本號，
使用指令檢視主機對應版本號：cat /etc/redhat-release
#mkdir /usr/local/python
cd /usr/local/python
wget http://vault.centos.org/7.4.1708/os/x86_64/Packages/python-2.7.5-58.el7.x86_64.rpm
wget http://vault.centos.org/7.4.1708/os/x86_64/Packages/python-iniparse-0.4-9.el7.noarch.rpm
wget http://vault.centos.org/7.4.1708/os/x86_64/Packages/python-pycurl-7.19.0-19.el7.x86_64.rpm
wget http://vault.centos.org/7.4.1708/os/x86_64/Packages/python-devel-2.7.5-58.el7.x86_64.rpm
wget http://vault.centos.org/7.4.1708/os/x86_64/Packages/python-libs-2.7.5-58.el7.x86_64.rpm
wget http://vault.centos.org/7.4.1708/os/x86_64/Packages/python-urlgrabber-3.10-8.el7.noarch.rpm
wget http://vault.centos.org/7.4.1708/os/x86_64/Packages/rpm-python-4.11.3-25.el7.x86_64.rpm
#強制執行安裝
rpm -ivh python-* rpm-python-*
如果：
出現安裝包的依賴問題，此時如下解決即可：
pm -ivh python-* rpm-python-* --nodeps --force
#--nodeps --force為不考慮依賴包，強制安裝。
#使用python指令 ，驗證安裝結果。
#mkdir /usr/local/yum
cd /usr/local/yum
wget http://vault.centos.org/7.4.1708/os/x86_64/Packages/yum-3.4.3-154.el7.centos.noarch.rpm
wget http://vault.centos.org/7.4.1708/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm
wget http://vault.centos.org/7.4.1708/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-42.el7.noarch.rpm
#rpm -ivh yum-*
#yum指令測試
##python3.6安裝教程
1.首先下載需要安裝的python版本：本次使用python-3.6.3
2.mkdir /usr/local/python3
3.解壓python-3.6.3.tar至python3資料夾
tar -zxvf python-3.6.3.tar -C /usr/local/python3
4.安裝依賴--tkinter，bz2庫
python需要tkinter
yum -y install tkinter tcl-devel tk-devel
python需要bz2庫
yum install bzip2-devel
5.進入解壓後的python原始檔，使用make指令
./configure --prefix=/usr/local/python3 #指定安裝目錄
make
make install
6.最後建立軟連線
n -s /usr/local/python3/bin/python3 /usr/bin/python3
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3
7.測試安裝結果
>>python3
>>pip3