Overview - Upgrade Tutorial - Private Cloud - Tutorials - ZStack Cloud 4.4.0

Overview

To upgrade a cloud platform, you need to upgrade the management node, compute nodes, storage nodes, and network nodes to the latest version and update basic software packages, software library dependencies, and core virtualization tools. This document describes how to upgrade ZStack Cloud.

Limitations

This document applies to cloud platform upgrading of the same repo, which means that the operating system (OS) version of the hosts is consistent with the management nodes. For example, the OS of the hosts and management nodes on the Cloud is CentOS 7.6.

Note: If you need to upgrade host OS or upgrade the cloud platform of multiple repos, contact the official technical support for help.

Upgrading Mechanism

ZStack Cloud provides the following upgrading mechanisms:

Seamless upgrading: seamlessly upgrades ZStack Cloud of any old version to the latest.
Lossless upgrading: does not affect the services that VM instances are running during ZStack Cloud upgrading.

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