If you use a system integration framework like chef or puppet there are some really neat ways of configuring your known-hosts files during convergence. For exa

If you use a system integration framework like chef or puppet there are some really neat ways of configuring your known-hosts files during convergence. For example, the ssh_known_hosts cookbook from opscode will automatically populate the ssh_known_hosts file with the information for all nodes in a particular environment (https://github.com/cookbooks/ssh_known_hosts https://github.com/cookbooks/ssh_known_hosts). Of course this is only relevant if you are using one of those tools ...