[SSSD] [PATCH] IPA: Enable AD sites when in server mode

Pavel Březina pbrezina at redhat.com
Tue Aug 27 13:10:51 UTC 2013


On 08/27/2013 02:57 PM, Jakub Hrozek wrote:
> On Tue, Aug 27, 2013 at 12:01:45PM +0200, Pavel Březina wrote:
>> On 08/18/2013 09:45 PM, Jakub Hrozek wrote:
>>> https://fedorahosted.org/sssd/ticket/1964
>>>
>>> Currently the AD sites are enabled unconditionally
>>
>> Hi,
>> at the moment, there cannot be set two srv plugins on one fail over context:
>>
>> [ad_failover_init] (0x0100): No primary servers defined, using
>> service discovery
>> [fo_add_srv_server] (0x0400): Adding new SRV server to service
>> 'gc_ad.pb' using 'tcp'.
>> [fo_add_srv_server] (0x0400): Adding new SRV server to service
>> 'ad.pb' using 'tcp'.
>> [_ad_servers_init] (0x0100): Added service discovery for AD
>> [be_fo_set_srv_lookup_plugin] (0x0400): Trying to set SRV lookup
>> plugin to AD
>> [sssd[be[ipa.pb]]] [fo_set_srv_lookup_plugin] (0x0080): SRV lookup
>> plugin is already set
>> [sssd[be[ipa.pb]]] [be_fo_set_srv_lookup_plugin] (0x0080): Unable to
>> set SRV lookup plugin, another plugin may be already in place
>>
>> So unfortunately, the change won't be that trivial :-(
>
> Ugh, sorry, I thought I tested the patch..apparently I was wrong.
>
> Maybe we can abuse the fact that IPA installer only ever puts the local
> replica hostname to the ipa_server parameter  and not use any resolve
> plugin in the server mode?
>
> See attached patch. I'm wondering whether to extend it with a warning
> for cases where some admin overriden the ipa_server directive.
>
> Or even better, read the ipa_server list, if there is no _srv_ keyword,
> proceed as the attached patch, if there is a _srv_ keyword, then don't
> enable the AD sites? (This I think would be mostly sanity checking, I
> don't think anyone would run such a setup)

This solution sounds good.

At the moment if sssd is in ipa server mode, ipa_enable_dns_sites = 
false (default) and _srv_ is set, no plugin is specified and srv 
resolution won't work. Thus I will actually require you to implement the 
last paragraph before I give it a go :-)

Otherwise LGTM.




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