I have a following versions of chef server components installed on my system:
chef.x86_64 11.16.4-1.el6 installed
chef-server-core.x86_64 12.2.0-1.el6 @/chef-server-core-12.2.0-1.el6.x86_64
opscode-manage.x86_64 1.21.0-1.el6 @chef-stable
I am going to upgrade chef server till latest 12 version. Is any recommendations for prior backup of server data ( databases , so on ) so that I could easy back to the old state in case something goes wrong after update. Also if chef-server latest version compatible with data from prior chef server versions (12.* )?