Hi all, we are building Xen virtual machine failover system using heartbeat 2.1.3 (v1 config style - 2 node cluster setup) on CentOS 5.2. We are using LDAP user authentication on the Domain-0 OS, the same database will be used for Dom-Us user authentications. That's why along with migration we also have to consider LDAP database synchronisation between cluster nodes. I know regular exports-imports would do the job, but there could always be a time interval when data are not synced and that could prevent resource migration.
We also use DRBD to sync domains' LVMs, so probably we could use it somehow to sync the databases. However, in real world scenario secondary node cannot mount DRBD resources and thus access database files directly. There could be an option to setup dual primary mode for DRBD resources but I think it could increase the possibility of failures. Next solution would be to setup LDAP into a cluster. However, as far as I checked the docu, we need to specify IP address of slave and I am not sure how it works when we need to switchover. Is there anyone experienced with such a problem? Thanks. _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
