Jochen Schulz schreef:
Kept thinking a bit longer: are the uids and gids of daemon users actually determined during install? My experience is that these users actually preserve their uid over installations quite well. And what problems do you see with hosts names/ip's? I assume at some point the new machine should *become* the old machine, so mathcing ip's and hostnames is then exaclty what you need. Of course, during the process of copying, you do need to be careful.Sjoerd Hardeman:Jochen Schulz schreef:Indeed, you should use cp -p or rsync -a as this copies permissions and users. If you then also copy /etc/passwd and /etc/group you'll have a matching set of permissions/users/groups.Not quite. This might lead to problems when UIDs have changed. Some packages (say, Apache) create new users and files which belong to these users. Even if you install the same set of packages on a new system, you have no guarantee that these users are created in the same order (and hence with the same UIDs/GIDs).But then you still have to check the directories you didn't copy over to the new system for files with the wrong owner. And the problems concerning hostnames and IP addresses have to be solved as well.
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