Merge pull request #1534 from buildkite/fix_BuildkiteAgentSignalGracePeriod_SUP-4296

Author: scadu

packer/linux/conf/bin/bk-install-elastic-stack.sh

@@ -293,6 +293,7 @@ disconnect-after-idle-timeout=${BUILDKITE_SCALE_IN_IDLE_PERIOD}
 disconnect-after-job=${BUILDKITE_TERMINATE_INSTANCE_AFTER_JOB}
 tracing-backend=${BUILDKITE_AGENT_TRACING_BACKEND}
 cancel-grace-period=${BUILDKITE_AGENT_CANCEL_GRACE_PERIOD}
+signal-grace-period-seconds=${BUILDKITE_AGENT_SIGNAL_GRACE_PERIOD_SECONDS}
 signing-aws-kms-key=${BUILDKITE_AGENT_SIGNING_KMS_KEY}
 verification-failure-behavior=${BUILDKITE_AGENT_SIGNING_FAILURE_BEHAVIOR}
 EOF

templates/aws-stack.yml

@@ -245,7 +245,7 @@ Parameters:
   BuildkiteAgentSignalGracePeriod:
     Description: The number of seconds given to a subprocess to handle being sent `cancel-signal`. After this period has elapsed, SIGKILL will be sent.
     Type: Number
-    Default: 60
+    Default: -1
     MinValue: -1
 
   BuildkiteTerminateInstanceAfterJob: