IPA location on replica servers with different domain suffixes

[I AM USER]

Hi Experts,

We have several IPA servers (pair of 8), and they are all replicas of each other with domain level-1. 
For example,

-- No location set for these two servers
server-1.ex1.net
server-2.ex1.net

-- locname1
server-1.mgmt-ex2.net
server-2.mgmt-ex2.net

We are using ipa version 4.5.4 from EL7.  There are many clients that are configured to use each of these pairs using /etc/resolv.conf. 
We tried setting ipa-location info for each of these pairs, but must be missing something because a query like the following returns the default records.

$ dig +short -t SRV _ldap._tcp.ex1.net
0 100 389 server2.mgmt.ex2.net
0 100 389 server1.ex1.net
0 100 389 server2.ex1.net
0 100 389 server1.mgmt.ex2.net

whereas a location specific query returns with correct priority,

$ dig +short -t SRV _ldap._tcp.locname1._locations.ex1.net
0 100 389 server1.mgmt.ex2.net
50 100 389 server2.ex1.net
0 100 389 server2.mgmt.ex2.net
.....
.....

Question is, what's the recommended way to do the ipa-location in a case like ours ? What are we missing in our setup that causes the query to always provide a default record.

Thanks

[Florence Blanc-Renaud]

On 1/3/19 8:39 PM, I AM USER via FreeIPA-users wrote:
> Hi Experts,
>
> We have several IPA servers (pair of 8), and they are all replicas of each other with domain level-1.
> For example,
>
> -- No location set for these two servers
> server-1.ex1.net
> server-2.ex1.net
>
> -- locname1
> server-1.mgmt-ex2.net
> server-2.mgmt-ex2.net
>
> We are using ipa version 4.5.4 from EL7.  There are many clients that are configured to use each of these pairs using /etc/resolv.conf.
> We tried setting ipa-location info for each of these pairs, but must be missing something because a query like the following returns the default records.
>
> $ dig +short -t SRV _ldap._tcp.ex1.net
> 0 100 389 server2.mgmt.ex2.net
> 0 100 389 server1.ex1.net
> 0 100 389 server2.ex1.net
> 0 100 389 server1.mgmt.ex2.net
>
> whereas a location specific query returns with correct priority,
>
> $ dig +short -t SRV _ldap._tcp.locname1._locations.ex1.net
> 0 100 389 server1.mgmt.ex2.net
> 50 100 389 server2.ex1.net
> 0 100 389 server2.mgmt.ex2.net
> .....
> .....
>
> Question is, what's the recommended way to do the ipa-location in a case like ours ? What are we missing in our setup that causes the query to always provide a default record.

Hi,

The following HowTo may help you:
https://www.freeipa.org/page/Howto/IPA_locations

flo
> Thanks
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[I AM USER]

Thanks, but I got to this point after following that document. It doesn't answer my question.

[Florence Blanc-Renaud]

On 1/8/19 10:13 PM, I AM USER via FreeIPA-users wrote:
> Thanks, but I got to this point after following that document. It doesn't answer my question.
> _______________________________________________
> FreeIPA-users mailing list -- [e-mail]
> To unsubscribe send an email to [e-mail]
> Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html
> List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
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Hi,

the output of dig will depend on the DNS server you are contacting.

For instance, let's assume client1 has /etc/resolv.conf configured to 
use the DNS servers without any location (server-1.ex1.net and 
server-2.ex1.net). On this client, the output will be as you saw:
$ dig +short -t SRV _ldap._tcp.ex1.net
0 100 389 server2.mgmt.ex2.net
0 100 389 server1.ex1.net
0 100 389 server2.ex1.net
0 100 389 server1.mgmt.ex2.net

Now if you contact the DNS on server-1.mgmt-ex2.net instead (which is 
part of locname1), you should see a different output:

$ dig @<IP of server-1.mgmt-ex2.net> +short -t SRV _ldap._tcp.ex1.net
0 100 389 server2.mgmt.ex2.net
0 100 389 server1.mgmt.ex2.net
50 100 389 server1.ex1.net
50 100 389 server2.ex1.net

So if you want client1 to use the IPA servers from locname1, you need to 
configure only the servers from locname1 in /etc/resolv.conf.

Hope this clarifies,
flo