[Freeipa-devel] Notes on server to server sasl

[Rich Megginson]

I'm using the current HEAD code.  My master is F9 x86_64 and my replica 
is F8 i386.  For the most part, the setup documented here 
http://freeipa.org/page/InstallAndDeploy works pretty well.

Setup
1) I'm not using DNS, just testing with VMs, so I had to make sure my 
VMs were assigned a consistent IP address via dhcp - and edit /etc/hosts 
to use the fqdn
2) I did not assign a hostname at install time, so I had to edit 
/etc/sysconfig/network to assign the hostname and reboot - probably 
could have done that with dhcp too (anyone know how?)
3) I had to edit the firewall settings to allow 389 and 636 tcp (and udp 
for good measure) on both the master and replica
4) I added the --no-host-dns option to ipa-server-install, but I'll need 
to add that to several other ipa- cmd line tools as well - I just hacked 
them instead to pass in verify_fqdn(name, True)

Notes
1) ipa-replica-install did not add a replication agreement from the 
replica to the master, but it configured the replica as a master (for 
MMR) - is this expected?
2) There was no principal for ldap/fqdn.of.replica at REALM - do I have to 
add this manually?  I did anyway and it made kerberos happier (but not 
work) with replication, but it seemed to break lots of stuff on the 
replica (could no longer ldapsearch -Y GSSAPI on the replica, could not 
ipa-finduser on the replica)

* Server to Server SASL/GSSAPI
I modified Fedora DS to do SASL/GSSAPI bind for replication from the 
master to the replica.  I then had to modify /etc/sysconfig/dirsrv to do 
the following:
kinit -k -t /etc/dirsrv/ds.keytab ldap/fqdn.of.master at REALM
parse klist to get the tgt filename
export KRB5CCNAME=tgtfilename
chown dirsrv:dirsrv $KRB5CCNAME

I then had to add the ldap host principal for ldap/fqdn.of.replica at REALM 
(not sure why it wasn't there?).  After startup, the master attempts to 
do a SASL/GSSAPI bind to the replica, and gets this error in kdc5krb log 
on the master:
NO PREAUTH: authtime xxxx, ldap/fqdn.of.master at REALM 
<mailto:ldap/fqdn.of.master at REALM> for ldap/fqdn.of.replica at REALM 
<mailto:ldap/fqdn.of.replica at REALM>, Generic error (see e-text)

Is what I'm trying to do possible within the IPA kerberos framework?
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