Upgrading Debian 6 (squeeze) to Debian 7 (wheezy)

Well it’s time to upgrade my VPS from Debian 6 to Debian 7. Debian has upgrade instructions. The process I followed was:

  1. Enter a screen session
  2. Use script to record the session: script -t 2>~/upgrade-wheezystep.time -a ~/upgrade-wheezystep.script
  3. Edit /etc/apt/sources.list and replace “squeeze” with “wheezy”
  4. Run apt-get update
  5. Run apt-get upgrade
  6. Run apt-get dist-upgrade
  7. Run dpkg –purge php5-suhosin

And that’s it. 25 minutes, smooth as silk. This is why I don’t use backports or 3rd party repos. Note step 7, that caught me when I did my first dev box. If you don’t you’ll get the error:

Error: PHP Startup: Unable to load dynamic library '/usr/lib/php5/20100525/suhosin.so' -
/usr/lib/php5/20100525/suhosin.so: cannot open shared object file: No such file or directory in Unknown, line 0

This is because suhosin was removed in Debian 7.

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About robertlabrie
DevOps Engineer at The Network Inc in metro Atlanta. Too many interests to list here, check out my posts, or look me up on LinkedIn

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