Right now when a new master is installed it is not configured with a CA
unless one passes in --setup-ca (or afterward runs ipa-ca-install).
Over and over we've seen people who have multiple masters and a single
CA, in some cases that CA machine is gone, leaving the realm with no CA
I think this is due to the fact that CA replicas are not created by
default and the users are not aware of the implications of a single
point-of-failure since things otherwise seem to be working.
So perhaps the default should be to install a CA unless the user
requests one not be installed. A related task may be to create an
uninstaller for just the CA.
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