5.5. 在自托管引擎环境中升级主机
在更新环境中的 Red Hat Enterprise Linux 主机前，在您要更新的主机上运行以下命令，禁用版本 3.6 存储库并启用所需的 4.0 存储库。
# subscription-manager repos --disable=rhel-7-server-rhev-mgmt-agent-rpms# subscription-manager repos --enable=rhel-7-server-rhv-4-mgmt-agent-rpms
现在，您可以更新环境中的 Red Hat Enterprise Linux 主机。如需更多信息， 请参阅升级指南中的 更新主机。
必须使用 RHVH 4.0 重新安装 RHEV-H 主机。请参阅安装指南中的 Red Hat Virtualization 主机 。
更新主机后，将数据中心和集群兼容性级别更新为 4.0。如需更多信息，请参阅升级 指南中的 Post-Upgrade 任务。
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