RHEL8: configuring systemd shutdown watchdog ("ShutdownWatchdogSec") has no effect

Solution Verified - Updated -

Issue

  • On RHEL8, the default value for ShutdownWatchdogSec is 10 minutes. Setting the value to 0 (to disable it) or any other value has no effect, the internal value used is always set to 10 minutes

Environment

  • Red Hat Enterprise Linux 8 (RHEL8)
    • systemd
    • watchdog

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