CentOS8.5安装yum

系统版本：CentOS8.5，X86_64

需要安装脚本如下：

#python
cd /usr/local/src/python
wget https://vault.centos.org/centos/8/BaseOS/x86_64/os/Packages/python3-asn1crypto-0.24.0-3.el8.noarch.rpm
wget https://vault.centos.org/centos/8/BaseOS/x86_64/os/Packages/python3-dnf-4.7.0-4.el8.noarch.rpm
wget https://vault.centos.org/centos/8/BaseOS/x86_64/os/Packages/python3-gpg-1.13.1-9.el8.x86_64.rpm
wget https://vault.centos.org/centos/8/BaseOS/x86_64/os/Packages/python3-hawkey-0.63.0-3.el8.x86_64.rpm
wget https://vault.centos.org/centos/8/BaseOS/x86_64/os/Packages/python3-libcomps-0.1.16-2.el8.x86_64.rpm
wget https://vault.centos.org/centos/8/BaseOS/x86_64/os/Packages/python3-libdnf-0.63.0-3.el8.x86_64.rpm
wget https://vault.centos.org/centos/8/BaseOS/x86_64/os/Packages/python3-libs-3.6.8-41.el8.x86_64.rpm
wget https://vault.centos.org/centos/8/BaseOS/x86_64/os/Packages/python3-rpm-4.14.3-19.el8.x86_64.rpm
wget https://vault.centos.org/centos/8/BaseOS/x86_64/os/Packages/platform-python-3.6.8-41.el8.x86_64.rpm
#yum
cd /usr/local/src/yum
wget https://repo.huaweicloud.com/centos/8-stream/BaseOS/x86_64/os/Packages/yum-4.7.0-4.el8.noarch.rpm
wget https://repo.huaweicloud.com/centos/8-stream/BaseOS/x86_64/os/Packages/yum-utils-4.0.21-3.el8.noarch.rpm

#安装Python
cd /usr/local/src/python
# 安装python
rpm -ivh python3-* platform-python-* --nodeps --force

# 安装yum
#安装yum
cd /usr/local/src/yum
rpm -Uvh --force --nodeps *.rpm

安装步骤：

1.在root账户下

2.vi /home/install_yum.sh 将脚本贴过来

3.chmod u+x /home/install_yum.sh

4.sh /home/install_yum.sh

验证结果：