How to Obtain Kernel Freeze or Hang Information Using Hardware NMI (文档 ID 549779.1)
文档中涉及到的Linux系统下的watchdog及NMI；在正常情况下不建议启动此功能，原因如下（主要是因为该特性可能会导致节点驱逐，看如下（2））：
（1）What is the hung task watchdog?（https://access.redhat.com/articles/1353393）中明确说明watchdod不应该被endble：
The hung task watchdog is primarily a debugging feature and should not really be enabled by default on an enterprise system.
（2）What tunables does NMI watchdog support to trigger a system reboot?（https://access.redhat.com/solutions/874733）
（3）References:Watchdog FAQ ( Doc ID 1005697.1 )