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当集群存在可升级版本时，您可以查看版本说明并立即发起滚动升级。

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升级前准备

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升级期间的业务影响

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升级按节点串行执行，同一时间最多升级一个节点。目标节点暂时退出服务，恢复正常后再继续处理其他节点。因此：

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升级耗时受节点数、版本资源准备和节点恢复情况影响，不提供固定完成时间。页面如展示预计耗时，仅供参考，请以集群状态和进度为准。

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操作步骤

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  1. 进入目标集群详情页，查看当前服务版本和“可升级”提示。
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  2. 选择“升级版本”；也可以从集群列表的“更多”菜单进入。
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  3. 在可升级版本列表中查看推荐版本、发布时间、版本说明和升级影响。
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  4. 选择目标版本（只能从可升级版本列表中选择，不能手工输入），确认立即升级提示。
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  5. 提交升级。
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  6. 返回详情页，通过“升级中”状态、目标版本、当前阶段和节点版本查看进度。
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  7. 所有节点完成升级后，确认集群恢复“运行中”且服务版本已更新。
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升级期间的操作限制

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升级后检查

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升级异常处理

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升级失败时，先查看集群进度和操作记录中的脱敏失败原因。系统不会自动回退已经进入升级流程的节点；当前也不提供用户自助回滚、跳过失败节点或取消升级入口。请勿继续提交升级、变配、公网访问或令牌操作，并携带集群 ID、当前版本、目标版本、提交时间和操作记录 ID 联系技术支持；不要提供访问令牌。

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