概述

由于前公司运维升级了python版本，导致模块缺失无法使用yum命令。

There was a problem importing one of the Python modules
required to run yum. The error leading to this problem was:

   /usr/lib64/python2.7/site-packages/_sqlitecache.so: cannot open shared object file: No such file or directory

Please install a package which provides this module, or
verify that the module is installed correctly.

It's possible that the above module doesn't match the
current version of Python, which is:
2.7.5 (default, Oct 31 2018, 18:48:32) 
[GCC 4.8.5 20150623 (Red Hat 4.8.5-36)]

If you cannot solve this problem yourself, please go to 
the yum faq at:
  http://yum.baseurl.org/wiki/Faq

解决办法

[root@localhost ~]# rpm -q yum-metadata-parser
yum-metadata-parser-1.1.4-10.el7.aarch64
[root@localhost ~]# rpm -e yum-metadata-parser --nodeps
[root@localhost ~]# rpm -ivh yum-metadata-parser-1.1.4-10.el7.aarch64.rpm