This topic happens to be one of those I always enjoy discussing. high availability (HA) and disaster recovery always become very emotional conversations among IT folks for obvious reasons. Your neck is on the line, so to speak, to make sure that your organization's systems remain online in the event of a disaster/failure. In days of old local system, HA and cold (unused) disaster recovery sites were good enough. The current agility of cloud now offers up new and better options for system stability. Do not settle for the old solutions. You have options!
As repeated earlier, there are multiple ways to accomplish HA with OpenStack. We will outline three possible scenarios that I have found to be successful and would meet most organizations' HA requirements. The three possible scenarios are listed here with a diagram to add additional context:
Multiple data centers: Multiple OpenStack regions are spanned across multiple geographically located data...