Now that there is multi-profile support, it makes sense to keep ssh hosts in the profile-specific area, rather than mixing the hosts from all unrelated places in ~/.ssh/known_hosts.
~/.site/etc/known_hosts or ~/.site/etc/ssh/known_hosts are good choices. ~/.site/etc/ points to ~/.site/profiles.d/ACTIVE/etc, where ACTIVE is a symbolic link to the active profile.
Now that there is multi-profile support, it makes sense to keep ssh hosts in the profile-specific area, rather than mixing the hosts from all unrelated places in
~/.ssh/known_hosts.~/.site/etc/known_hostsor~/.site/etc/ssh/known_hostsare good choices.~/.site/etc/points to~/.site/profiles.d/ACTIVE/etc, whereACTIVEis a symbolic link to the active profile.