Debian 8 Jessie update to Debian 9 Stretch and possible errors

At first I was very afraid to do it on a live, working server precisely because with older versions I had a sad experience, where it was easier to reinstall the system than to correct the existing errors. That's why I originally made all the necessary backups. Namely: Folder /var - there I have all the sites. Folder /etc - configs And of... Read more...