basho/riak-chef-cookbook — pull request #142 by gregkare (2014-08-07 11:02:13+00:00)
Title: Force apt-get to keep the old config file when upgrading Riak

We've ran into this issue when upgrading from Riak 1.4.2 to 1.4.10:

https://gist.github.com/gregkare/8d0dd12d832fc240f701

Adding those dpkg switches enabled us to update.