On RHEL 7 :
sudo yum clean all sudo rm -r /var/cache/yum sudo rm -r /var/cache/PackageKit sudo yum update
On RHEL 8 :
sudo dnf clean all sudo rm -r /var/cache/dnf sudo rm -r /var/cache/PackageKit sudo dnf upgrade
参考:https://access.redhat.com/discussions/4728791
参考:https://gitee.com/openeuler/community/issues/I1S32P