红帽全球峰会20.2. 为特定安装内核启用 kdump
您可以在机器上为特定内核启用 kdump 服务。
先决条件
- 管理员特权
流程
列出在机器上安装的内核。
ls -a /boot/vmlinuz-*
# ls -a /boot/vmlinuz-* /boot/vmlinuz-0-rescue-2930657cd0dc43c2b75db480e5e5b4a9 /boot/vmlinuz-4.18.0-330.el8.x86_64 /boot/vmlinuz-4.18.0-330.rt7.111.el8.x86_64Copy to Clipboard Copied! 在系统的 Grand Unified Bootloader(GRUB)2 配置文件中添加特定的
kdump内核。例如：
grubby --update-kernel=vmlinuz-4.18.0-330.el8.x86_64 --args="crashkernel=auto"
# grubby --update-kernel=vmlinuz-4.18.0-330.el8.x86_64 --args="crashkernel=auto"Copy to Clipboard Copied! 启用
kdump服务。systemctl enable --now kdump.service
# systemctl enable --now kdump.serviceCopy to Clipboard Copied!
验证
检查
kdump服务是否正在运行：systemctl status kdump.service
# systemctl status kdump.service ○ kdump.service - Crash recovery kernel arming Loaded: loaded (/usr/lib/systemd/system/kdump.service; enabled; vendor preset: disabled) Active: active (live)Copy to Clipboard Copied!
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