Hi Lei Zhang, You can find more information about HA in OpenStack in this guide: http://docs.openstack.org/trunk/openstack-ha/content/index.html Best regards, Syed Armani On Monday 08 April 2013 04:46 PM, Lei Zhang wrote: > Hi all, > > I am using Folsom, and I want to set up a HA between VMs. For example, I > have two DB VMs. One is the primary and other is a slave. I want to use > Keepalive or pacemake to switch between them when one is failed. > > But how to implement this? Because in general, we need a dynamic IP to > associate to the VMs and change the relationship when necessary. But > which IP should be used ? Floating ip or Fixed IP? and how. > > -- > Lei Zhang > > Blog: http://jeffrey4l.github.com > twitter/weibo: @jeffrey4l > > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : openstack at lists.launchpad.net > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp >