Hi Simon, We are not aware of any migration issues from 2.7 to 2.8. However, I suspect there is a problem with the journal database. Could you, please, try to migrate without copying old journal? Just with an up-to-date zone file.

Daniel On 4/8/19 8:19 PM, Simon Fehlmann wrote: > Hi @all > > I was trying to migrate knot to a new server with Ubuntu 18.04 and knot > 2.8.0. I managed this by just copying the content of /var/lib/knot/* > from the old to the new server. > > One of my domains threw an error when starting knot: > knotd[5186]: error: [<zone>] zone event 'load' failed (malformed data) > > keymgr throws the same error. I dumped the data out of the 2.7.6 > installation with mdb_dump and imported it into the 2.8.0 installation, > which did not help. > > I then uninstalled 2.8.0 on the new server and installed 2.7.6, migrated > data from the old server with the same procedure and it worked, no errors. > > Just out of curiosity I upgraded then the new server from 2.7.6 to 2.8.0 > to see what will happen: It was the exact same behaviour, the zone > couldn't load. > > How can I proceed here? There is obviously something wrong that the > update breaks the loading of the zone. Is this on my end or a bug in knot? > > > Thanks > Simon >

Hi Daniel Thanks, that fixed it. I see, it is not really recommended to blindly update knot as you can easily break your zones and sometimes also have to do manual work before updating. I heard also from other people that updating broke some of their stuff, so maybe that's something to keep an eye on for you guys ;) . However, great work with the part that works fine!

Best regards and thank you for your help Simon Am 09.04.19 um 19:01 schrieb daniel.salzman(a)nic.cz: > Simon, > > We have extended the migration section in the documentation > https://www.knot-dns.cz/docs/2.8/html/migration.html#upgrade-2-7-x-to-2-8-x > Probably, it's your case. > > Daniel > > On 2019-04-08 20:19, Simon Fehlmann wrote: >> Hi @all >> >> I was trying to migrate knot to a new server with Ubuntu 18.04 and >> knot >> 2.8.0. I managed this by just copying the content of /var/lib/knot/* >> from the old to the new server. >> >> One of my domains threw an error when starting knot: >> knotd[5186]: error: [<zone>] zone event 'load' failed (malformed >> data) >> >> keymgr throws the same error. I dumped the data out of the 2.7.6 >> installation with mdb_dump and imported it into the 2.8.0 >> installation, >> which did not help. >> >> I then uninstalled 2.8.0 on the new server and installed 2.7.6, >> migrated >> data from the old server with the same procedure and it worked, no >> errors. >> >> Just out of curiosity I upgraded then the new server from 2.7.6 to >> 2.8.0 >> to see what will happen: It was the exact same behaviour, the zone >> couldn't load. >> >> How can I proceed here? There is obviously something wrong that the >> update breaks the loading of the zone. Is this on my end or a bug in >> knot? >> >> >> Thanks >> Simon