Newer versions don't respect BUILDKITE_CANCEL_GRACE_PERIOD

[etodd]

Somewhere in the last few releases, the Buildkite agent stopped respecting BUILDKITE_CANCEL_GRACE_PERIOD, which we currently set to 600. Instead it kills the job after the default 10 second grace period.

I rolled back our agent to 3.65 and that version seems to respect it properly.

[tessereth]

Thanks for reporting this! It looks like this changed in #2654 in v3.66 when we extended signal grace period handling to all phases of a build. I'll look into the best way to make this more intuitive, but in the mean time, you can set BUILDKITE_SIGNAL_GRACE_PERIOD_SECONDS to slightly less than BUILDKITE_CANCEL_GRACE_PERIOD and you should get the behaviour you're after.

[tessereth]

This should be fixed in the next agent release (v3.74)