OpenStack Cluster Zero-Downtime Upgrade with Kolla
Channel: OpenInfra Foundation
Date: 2017-05-11

Currently, zero-downtime upgrade is highly demand feature from OpenStack users. Current implementation status in OpenStack is variable between projects and almost projects have not fully implemented rolling upgrade. One among Kolla's deliverables is OpenStack container-based deployment tool, thus adding zero-downtime upgrade support in Kolla is reasonable. Our approach is to implement in Kolla natively without needing support from individual OpenStack service. We propose 2 solutions for this pro