Overview

This Tutorial elaborates on how to upgrade ZStack Cloud. To upgrade the Cloud, you need to upgrade the management node, compute node, storage node, and network node to the latest version, and update the corresponding basic system packages, software dependencies, and core virtualization tools.

Applicable Scope

This Tutorial is only applicable to the Cloud where the hosts and management nodes use the same operating system version. For example, both the hosts and management nodes in your Cloud use CentOS 7.6.
Note: To upgrade the operating system of your hosts or upgrade a Cloud that has multiple repositories (repos), contact the official technical support.

Upgrade Mechanism

ZStack Cloud supports the following two upgrade mechanisms:
  • Seamless upgrade: All historical release versions of ZStack Cloud can be seamlessly upgraded to the latest version with one click.
  • Non-destructive upgrade: During the upgrade of ZStack Cloud, the business running in the VM instances is not affected.
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