yum 命令缺失
https://vault.centos.org/7.9.2009/os/x86_64/Packages/
这个是环境基础包地址 看情况替换对应的url参数
执行以下命令
wget https://vault.centos.org/7.9.2009/os/x86_64/Packages/python-libs-2.7.5-89.el7.x86_64.rpm
wget https://vault.centos.org/7.9.2009/os/x86_64/Packages/python-devel-2.7.5-89.el7.x86_64.rpm
wget http://vault.centos.org/7.9.2009/os/x86_64/Packages/python-2.7.5-94.el7_9.x86_64.rpm
rpm -ivh python-libs-2.7.5-89.el7.x86_64.rpm --force
rpm -ivh python-2.7.5-89.el7.x86_64.rpm --force
rpm -ivh python-devel-2.7.5-89.el7.x86_64.rpm --force基础命令缺失 强制重新安装
yum reinstall coreutils -y