Bucl, Casper wrote: > > Hi, > > I?m trying to create a high availability ldap for a system I have in > place that is currently using multimaster replication. Using a shared > storage system isn?t an option in this case. > > To give you an idea of what our setup looks like, > > There are two nodes, that have replication set up. These are set up as > multimasters and have processes that write to both of them. These > changes replicate to the other ldap server. > > Now I need them to be in a high availability configuration. > > I have created duplicates of each node and gotten the high > availability portion on each of them to work correctly. > > The problem comes with fedora and replication. > > I have tried multiple ways of setting up fedora and replication and > they always seem to end up with changes not being replicated to the > other master when we have failed over to the secondary node. The two > most successful one?s are below > > Configurations. > > Full Mesh: All links were set up as a two way replication. > > This always ends up with at least 2 nodes showing errors saying it > ?Can't locate CSN? or ?Duplicate node ID? > > Node1A ------- Node1B > > | \ / | > > | X | > > | / \ | > > Node2A ------- Node2B > > Single replication agreement between VIPs > > In this configuration, we initially copied over the slapd instance > directory on setup of the second HA node (Node1A to Node1B) so that > the settings and configurations are identical on both. Then as changes > were made to the ldap, we created backups using db2bak. These backups > are copied over to the failover box and then imported on startup of > fedora ds. This doesn?t appear to backup the changelog and ends up > with an error saying ?Can?t locate CSN? again. > > Node1 VIP > > | > > | > > Node2 VIP > > I have tried other things as well and they were a lot less fruitful > than the two examples I have here. > > Has anyone set up a high availability scenario similar to this? Can > anyone suggest a different process or configuration that would > accomplish what I?m after? > Yes. Configurations like this have been working at high volume installations for several years. Let's start with - what platform are you running on your systems? What version of DS? What procedure did you use to set up and initialize your replicas? > > Thanks, > > Casper > > ------------------------------------------------------------------------ > > -- > 389 users mailing list > 389-users at redhat.com > https://www.redhat.com/mailman/listinfo/fedora-directory-users > -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/x-pkcs7-signature Size: 3258 bytes Desc: S/MIME Cryptographic Signature Url : http://lists.fedoraproject.org/pipermail/389-users/attachments/20091117/d91c8e2a/attachment.bin
