[Freeipa-users] Syncing with AD
Rich Megginson
rmeggins at redhat.com
Wed May 15 13:12:18 UTC 2013
On 05/15/2013 01:31 AM, James A wrote:
>
>
>
> On Wed, May 15, 2013 at 9:02 AM, James A <james at atia.se
> <mailto:james at atia.se>> wrote:
>
>
>
>
> On Tue, May 14, 2013 at 5:07 PM, Rich Megginson
> <rmeggins at redhat.com <mailto:rmeggins at redhat.com>> wrote:
>
> On 05/14/2013 07:57 AM, Rob Crittenden wrote:
>
> James A wrote:
>
> Hello all,
>
> I have been playing with trying to set up
> synchronization between
> windows AD --> IPA following the instructions at
> https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Identity_Management_Guide/index.html
>
>
> A few questions arise;
>
> 1.) The documentation (specifically on
> https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Identity_Management_Guide/managing-sync-agmt.html),
>
> (under table 9.2) talks about options to the
> "ipa-replica-manage
> connect" command. Among others, --bindpw and
> --passsync. With --binddn
> we specify the "full user DN of the synchronization
> identity" (and it's
> password with --bindpw ... but I fail to understand
> which users password
> should be used for "--passsync"?? Is it the same user?
>
>
> No, a special IPA system account user is needed so the
> PassSync service running in AD can bind to the IPA LDAP
> server to make password changes. This entry needs to be
> created in IPA regardless of whether you are using the
> PassSync service or not.
>
> So binddn/bindpw is for the AD user we use to bind from
> IPA to AD, and passsync is the password set on the IPA
> passsync account.
>
> 2.) The documentation says that the "synchronization
> identity" (see also
> above) must exist in the AD domain and "must have
> replicator, read,
> search and write permissions on the AD subtree. What
> I am trying to do
> is create a one way sync from AD --> IPA and I would
> really like to
> avoid using a user (for synching) that has write
> permissions (in the
> AD). All my tries in setting up synchronization fails
> unless I add the
> synch-user to the group "Administrators". I have tried
> (and failed)
> using "account admins" etc. Any pointers here would
> be great. Sorry
> for my ignorance when it comes to Windows. I am sure I
> am missing
> something obvious.
>
> 3.) I follow the instructions under "9.4.5"
> (https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Identity_Management_Guide/managing-sync-agmt.html#unidirectional-sync)
>
> to setup Uni-directional sync. (only AD --> IPA), and
> yet, when I go to
> remove an account in IPA it gets removed also in the
> AD. (This I really
> want to avoid, thus the need for a read-only user to
> do the
> synchronization - see question 2).
>
>
> I'm not really sure about #2 or #3. Hopefully one of the
> 389-ds devs will chime in with some suggestions.
>
>
> Write access is not required if you are only doing one way sync.
> Here is the information about adding the specific rights to
> the windows sync user
> http://port389.org/wiki/Howto:WindowsSync#Creating_AD_User_with_Replication_Rights
>
>
> BINGO :) Thank you! Now I am very close!
>
> The instructions read "In the 'Permissions for Windows Sync' list,
> make sure Read is checked under the Allow column". This I don't
> have (I can't find this setting where the instructions say it
> should be).... I do have "replicate directory changes",
> "replicating directory changes all", "replication synchronization"
> and "monitor active directory replication".
> When I set "Replication Synchronization" and "Replicate Directory
> Changes" permissions on the user, I can sync new accounts using
> this useraccount.
>
> But...
>
> When I delete a user on the IPA server, then sync again the user
> doesn't show up in IPA.
> The good news is that the user doesn't get deleted in the AD, but
> I can't sync it back to the IPA.
>
> If I create a new user in the AD it gets synced ok. (to IPA).
>
>
>
> I realize some of these are more windows/AD-centric issues, but
> given that I use IPA for syncing from the AD I hope maybe someone
> can shed some (more) light on this on this maillist....
>
> thanks,
>
> //James.
>
>
>
>
> For what it's worth, I just noticed that if I remove an account on the
> IPA server, go over to the AD, change an attribute (such as set it to
> "disabled"), and sync again it syncronizes over no problem. If I
> remove an account (on IPA) without touching it on the AD, it won't
> syncronize however.
IPA polls for changes in AD every 5 minutes by default. You can change
the winSyncInterval if you want this to happen more often. Also, the
polling only looks for entries that have changed, which is why it only
syncs from AD to IPA if you change something.
>
> //J
>
>
>
>
>
>
>
>
> All in all I think the FreeIPA project is amazing and
> it really gives us
> in the Linux community something we haven't had
> before. If I can iron
> out the problems above I am sure it will become a
> great tool for me and
> my client.
>
>
> Glad you like it!
>
> cheers
>
> rob
>
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