[SOLVED] 32bit to 64bit migration

[dwill]

Once again all went well, same problem - I am sure the passwords were all sync'd this time, however I'm still getting name resolution errors for the localhost.

I did some quick searches and it appears U8.04 has some issues with resolving localhost - preliminary results point to an issue with Avahi.

I'll post the solution once discovered.

[iway]

Have you played around with the localhost line?

On one server with Ubuntu 8.0.4 this works:

127.0.0.1 localhost.localdomain localhost

On another identical server with Ubuntu 8.0.4 also, only this works:

127.0.0.1 localhost

You have to play with those a little, unfortunately...

[phoenix]

Originally Posted by interways

Have you played around with the localhost line?

On one server with Ubuntu 8.0.4 this works:

127.0.0.1 localhost.localdomain localhost

On another identical server with Ubuntu 8.0.4 also, only this works:

127.0.0.1 localhost

You have to play with those a little, unfortunately...

You shouldn't have to 'play around' with the hosts file, the correct format is:

127.0.0.1 localhost.localdomain localhost

as detailed in the Quick Start Installation Guide and various posts scattered throughout the forums. It's even mentioned in the Ubuntu installation guide in the wiki.

[iway]

Well, if it were that easy!

Your docs are not correct here, since, as I stated, it sometimes works one way on one server, then only the other way on another, identical, server.

So, yes, you should play with it a little, see if you get it to work.

[dwill]

It seems that "Multicast DNS discovery service" may be the culprit. Won't be able to confirm until tonight, When I will once again try to make the switch.

Details:

bug report here: [Nix-dev] name resolution in nix packages not working

It seems that 8.04 has changed the DNS discovery order in /etc/nsswitch.conf

on my 6.06 server the hosts line is

hosts:          files dns mdns

on the 8.04 server the hosts line is

hosts:          files mdns4_minimal [NOTFOUND=return] dns mdns4

it looks like there are two possible workarounds - disable the DNS Multicast service in Administration --> services
or
edit the hosts line in /etc/nsswitch.conf

Now it's killin' me that I have to wait till tonight to try again

[phoenix]

Originally Posted by interways

Well, if it were that easy!

It is that easy.

Originally Posted by interways

Your docs are not correct here, since, as I stated, it sometimes works one way on one server, then only the other way on another, identical, server.

The logic of this statement escapes me, if the servers are 'identical' they would always behave in the same way, if it doesn't work on one of them then it can't be identical.

Originally Posted by interways

So, yes, you should play with it a little, see if you get it to work.

If you seriously believe that it doesn't work on some servers have you filed a bug report so it can be checked?

[ekkas]

I know this is an old thread, but for reference...

I had some hastles with my Ubuntu 8.04 (ZCS 6.09) to CentOS5.5-64bit.
After a minimal CentOS reinstall I followed the instructions, still problems.
Then after restoring the LDAP stuff and checking the .xml file, I reset MySQL passwords via CLI before starting services and then it worked.
Just follow the instructions properly (and clear out store and index folders before you copy old ones), manually reset passwords (to same passwords as on old server) before starting and it was ok in my case.
Ekkas