红帽全球峰会4.4. 更新所有 Controller 节点
此过程会将所有 Controller 节点更新至最新的 OpenStack Platform 16.1 版本。此过程涉及运行 openstack overcloud update run 命令，包括 --limit Controller 选项，以仅限制操作到 Controller 节点。control plane API 在次版本更新过程中完全可用。
重要
在解决 BZ#1872404 之前，对于基于可组合角色的节点，您必须先更新 Database 角色，然后再更新 Controller, Messaging, Compute, Ceph 和其他角色。
注意
如果不使用默认堆栈名称(overcloud)，请使用 --stack <stack_name> 选项替换 < ;stack_name& gt; 选项设置堆栈名称，并将 < stack_name > 替换为您的堆栈的名称。
流程
Source
stackrc文件：$ source ~/stackrc运行更新命令：
$ openstack overcloud update run --stack <stack_name> --limit Controller- 等待 Controller 节点更新完成。
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