Overview
Background
OS Version Change allows you to change the host OS version. You can create an OS version change task to batch upgrade hosts. Each OS version change task generates an upgrade service ticket. You can view the upgrade progress of each instance in the service ticket and retry or roll back the upgrade as required.
Constraints
Currently, only Red Hat Linux is supported. Only ECSs and IDC offline resources are supported. Only minor version upgrades are allowed (upgrade path: From Red Hat 7.4/7.6 to Red Hat 7.9). The architecture type can only be x86_64. Batching is not supported.
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