红帽全球峰会第 12 章 使用 bootupd 更新 RHCOS 节点上的引导装载程序
要使用 bootupd 更新 RHCOS 节点上的引导装载程序，您必须在 RHCOS 机器上手动运行 bootupctl update 命令，或使用 systemd 单元提供机器配置。
与 grubby 或其他引导装载程序工具不同，boot upd 不管理内核空间配置，如传递内核参数。要配置内核参数，请参阅向节点添加内核参数。
注意
您可以使用 bootupd 更新引导装载程序以防止 BootHole 漏洞。
12.1. 手动更新引导装载程序
复制链接链接已复制到粘贴板!
您可以使用 bootupctl 命令行工具手动检查系统状态并更新引导装载程序。
检查系统状态：
bootupctl status
# bootupctl statusCopy to Clipboard Copied! Toggle word wrap Toggle overflow x86_64的输出示例Component EFI Installed: grub2-efi-x64-1:2.04-31.el8_4.1.x86_64,shim-x64-15-8.el8_1.x86_64 Update: At latest version
Component EFI Installed: grub2-efi-x64-1:2.04-31.el8_4.1.x86_64,shim-x64-15-8.el8_1.x86_64 Update: At latest versionCopy to Clipboard Copied! Toggle word wrap Toggle overflow aarch64的输出示例Component EFI Installed: grub2-efi-aa64-1:2.02-99.el8_4.1.aarch64,shim-aa64-15.4-2.el8_1.aarch64 Update: At latest version
Component EFI Installed: grub2-efi-aa64-1:2.02-99.el8_4.1.aarch64,shim-aa64-15.4-2.el8_1.aarch64 Update: At latest versionCopy to Clipboard Copied! Toggle word wrap Toggle overflow
OpenShift Container Platform 集群最初安装在版本 4.4 及更早的版本中，需要明确的采用阶段。
如果系统状态为
Adoptable，请执行采用：bootupctl adopt-and-update
# bootupctl adopt-and-updateCopy to Clipboard Copied! Toggle word wrap Toggle overflow 输出示例
Updated: grub2-efi-x64-1:2.04-31.el8_4.1.x86_64,shim-x64-15-8.el8_1.x86_64
Updated: grub2-efi-x64-1:2.04-31.el8_4.1.x86_64,shim-x64-15-8.el8_1.x86_64Copy to Clipboard Copied! Toggle word wrap Toggle overflow 如果有可用更新，请应用更新以便在下次重启时使更改生效：
bootupctl update
# bootupctl updateCopy to Clipboard Copied! Toggle word wrap Toggle overflow 输出示例
Updated: grub2-efi-x64-1:2.04-31.el8_4.1.x86_64,shim-x64-15-8.el8_1.x86_64
Updated: grub2-efi-x64-1:2.04-31.el8_4.1.x86_64,shim-x64-15-8.el8_1.x86_64Copy to Clipboard Copied! Toggle word wrap Toggle overflow
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