On 21.04.19 16:14, Emmett Culley via CentOS wrote:
When I attempted to update a remote server via SSH last night the UPS on my local workstations failed, causing the SSH session to get dropped in the middle of the upgrade process. This morning I am not able to complete the update. When it failed when I tried to run it again thins morning I did the suggested things like "dnf clean all" and "rpm -rebuilddb", and I still get this after it downloads the packages again:
Running transaction test The downloaded packages were saved in cache until the next successful transaction. You can remove cached packages by executing 'dnf clean packages'. Error: Transaction check error: file /usr/lib64/libz.so.1.2.7 from install of zlib-1.2.7-18.el7.x86_64 conflicts with file from package zlib-1.2.7-17.el7.x86_64
You have to cleanup duplicate packages. package-cleanup from yum-utils will do this job.
Basically:
package-cleanup --dupes
will list the duplicate packages
package-cleanup --cleandupes
will remove the dupes. If I remember correctly, you have to add --removenewestdupes to the second command.
Best regards Ulf