I did my first upgrade of a lenny box to squeeze today; a test server in work. All went pretty smoothly but I had a handful of things I had to frob manually that I thought I’d write up here:

  • collectd SNMP plugin needs MIBs or it won’t start: installed snmp-mibs-downloader from non-free
  • autofs starts before nis (#470573): added ypbind to the Required-Start: line in /etc/init.d/autofs and re-ran insserv
  • NFS automounts now using NFSv4 instead of v3 and user/group mapping setting everything to nobody: Set NEED_IDMAPD=yes in /etc/default/nfs-common and ensure Domain in /etc/idmapd.conf is set to the correct domain name (look in /var/log/daemon.log for lines from rpc.idmapd saying “does not map into domain” to find out what this should be if you don’t know).

I think that’s pretty smooth overall; kudos to all those involved. I’ve a few more boxes to upgrade, but they’re all more likely to have people complaining at me if there are hiccups so they’ll have to wait until I have a suitable block of time set aside.