Hi, On Thu, Nov 20, 2008 at 08:32:52AM -0700, Ryan Kish wrote: > Hi Rob, > > I am using heartbeat 2 to run an HA OpenLDAP system. The cluster has > two nodes, one designated as the master and the other as a slave. Thus > far it has been very stable, and handles failover quite well. In a > nutshell, this is how it is set up. > > - Both nodes have a two ldap configurations, one for running as the > master, one for running as the slave. I had to write a couple of OCF > scripts for each service (master and slave).
I guess that this could be better handled by a multi-state (master-slave) resource. For which you'd need an appropriate OCF RA. Basically, what you already have could be combined in a single RA, with two extra operations (actions): promote (slave to master) and demote (vice versa). Your configuration would also be simpler. Thanks, Dejan > - one VIP is used, it is bound to the master ldap service using a > colocation. The VIP also has a place defined, node1 should be the > master unless something bad is happening. > - a second colocation is used to ensure the master and slave do not > try to start on the same node > - I leverage the OpenLDAP replication feature to ensure the slave > node is up to date. > > If the primary is to fail, or is placed in standby mode, OpenLDAP is > stopped (as the slave) and restarted as the master, and of course the > VIP moves as well. This momentary blip is cushioned by the fact that I > am running nscd on all of my ldap connected nodes. > > Cheers, > Ryan > > On Wed, Nov 19, 2008 at 2:50 PM, Rob Tanner <[EMAIL PROTECTED]> wrote: > > Hi, > > > > I'm running DNS and DHCP, both of which are simple flat file databases on > > Linux HA and it works great. > > The next thing to try is OpenLDAP and MySQL, both of which are critical > > services and both of which are for more complex. Is anyone running them on > > Linux HA. Does it work reliably when you switch, etc. How do you have it > > all configured? > > > > Thanks, > > > > Rob Tanner > > Linfield College > > > > _______________________________________________ > > Linux-HA mailing list > > [email protected] > > http://lists.linux-ha.org/mailman/listinfo/linux-ha > > See also: http://linux-ha.org/ReportingProblems > > > _______________________________________________ > Linux-HA mailing list > [email protected] > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
