The required packages are missing from the local Yum source currently in use and need to be added manually, and the add step is documented below.
1, find the specific location of Yum, such as my in the/VAR/WWW/HTML/YUM/CENTOS/7 directory, view the file list can see each RPM package and a Repodata folder, The Repomd.xml file in this folder is the record of the Yum source file dependencies, and the main task of the new Yum source is to update the dependencies.
2, delete repodata folder, Rm-rf Repodata; Then upload the RPM package that you need to add to the directory below the Yum source.
3, create a new Repodata folder, Createrepo.
If the prompt command does not exist, first install yum-y install Createrepo
4. Finally refresh Yum clean all; The new RPM package can be applied to the local Yum source.
Linux adds rpm packages to local yum sources