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On 08/12/2014 11:49 AM, Rob Crittenden wrote:
> Erinn Looney-Triggs wrote:
>> The documentation seems to be a little fuzzy on setting up two
>> CAs, some parts indicate this is a bad idea because the CRLs can
>> clobber each other, other parts, such as the migration guide from
>> RHEL 6.5 to 7 seem to indicate that it is ok, albeit maybe that
>> is just for a short time.
> 
> It isn't a bad idea to stand up clones, you just need to understand
> that this is one of the rare places where all masters are not
> equal. One has to be designated as the CRL generator and one as the
> CA renewal master. These don't have to be the same but it makes
> sense to keep them together IMHO.
> 
> The reason to limit CRL generation to one master is the small
> chance that you could end up with two CRLs with the same serial
> number but containing different certificates. Remember that a CRL
> is just a signed snapshot in time of revoked certificates.
> 
> Similarly for renewal it is vastly easier to do it on one host than
> try to manage the race condition of them trying to renew at the
> same time.
> 
>> What I am wondering, because I get a little nervous when all my
>> data for the CA is on one host (backups aside), is whether there
>> is a value, assuming that having two concurrent dogtag instances
>> is a bad thing, to replicating the ipaca data in ldap. Just the
>> data I mean, would it be possible, having just the LDAP data and
>> whatever certs are in the replica file to basically reconstruct a
>> CA?
> 
> Right, you want at least two CAs for redundancy. Some dogtag guru
> could probably stand up a new CA using just the LDAP data and the
> certs but I can't imagine it would be easy, even for them.
> 
> rob
> 

Ok, are there manual steps involved in that or does the --setup-ca on
the replica just take care of everything.

I certainly hope I am not looking in the wrong place, I just can't
seem to find anything definitive in the docs.

Thanks,
- -Erinn
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