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DescriptionAneta Šteflová Petrová
2016-10-05 10:38:05 UTC
Failures with discovery when using --server and trusts can be confusing. We were asked to clarify this.
Background (from email):
Question: What is the reasoning behind having ipa-client-install disable dns_lookup_realm and dns_lookup_kdc when the caller specifies the server?
Answer: --server is used to pin IPA client to a specific IPA server. This means
both SSSD and Kerberos library ensured to not try to access other
servers, both LDAP and KDC.
This predates FreeIPA's integration with Active Directory where we have
to do dynamic discovery of the users' AD domains and as result do
authentication against their domain controllers.
If you don't want to pin IPA client to a specific IPA server, you don't
need to use --server option. In RHEL 7.3 we have support for sites in
FreeIPA, which should work automatically by choosing closest server.
Alternatively, you can use configuration management tools to set
dns_lookup_realm and dns_lookup_kdc on the clients that need to be
pinned to a specific IPA server otherwise.
Comment 2Aneta Šteflová Petrová
2017-02-03 08:24:53 UTC