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Implement new agent disconnect-after-uptime config #1553

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Merged
merged 1 commit into from
Aug 20, 2025
+13 −0
Merged

Implement new agent disconnect-after-uptime config #1553

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1 change: 1 addition & 0 deletions packer/linux/conf/bin/bk-install-elastic-stack.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -291,6 +291,7 @@ spawn=${BUILDKITE_AGENTS_PER_INSTANCE}
no-color=true
disconnect-after-idle-timeout=${BUILDKITE_SCALE_IN_IDLE_PERIOD}
disconnect-after-job=${BUILDKITE_TERMINATE_INSTANCE_AFTER_JOB}
disconnect-after-uptime=${BUILDKITE_AGENT_DISCONNECT_AFTER_UPTIME}
tracing-backend=${BUILDKITE_AGENT_TRACING_BACKEND}
cancel-grace-period=${BUILDKITE_AGENT_CANCEL_GRACE_PERIOD}
signal-grace-period-seconds=${BUILDKITE_AGENT_SIGNAL_GRACE_PERIOD_SECONDS}
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1 change: 1 addition & 0 deletions packer/windows/conf/bin/bk-install-elastic-stack.ps1
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Expand Up @@ -155,6 +155,7 @@ no-color=true
shell=powershell
disconnect-after-idle-timeout=${Env:BUILDKITE_SCALE_IN_IDLE_PERIOD}
disconnect-after-job=${Env:BUILDKITE_TERMINATE_INSTANCE_AFTER_JOB}
disconnect-after-uptime=${Env:BUILDKITE_AGENT_DISCONNECT_AFTER_UPTIME}
tracing-backend=${Env:BUILDKITE_AGENT_TRACING_BACKEND}
signing-aws-kms-key=${Env:BUILDKITE_AGENT_SIGNING_KMS_KEY}
verification-failure-behavior=${Env:BUILDKITE_AGENT_SIGNING_FAILURE_BEHAVIOR}
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11 changes: 11 additions & 0 deletions templates/aws-stack.yml
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Expand Up @@ -285,6 +285,15 @@ Parameters:
- "false"
Default: "false"

BuildkiteAgentDisconnectAfterUptime:
Description: >
The maximum uptime in seconds before the agent stops accepting new jobs and shuts down
after any running jobs complete. Set to 0 to disable uptime-based termination.
This helps regularly cycle out machines and prevent resource accumulation issues.
Type: Number
Default: 0
MinValue: 0

ExperimentalEnableResourceLimits:
Description: >
(Experimental) If true, enables systemd resource limits for the Buildkite agent.
Expand Down Expand Up @@ -1573,6 +1582,7 @@ Resources:
$Env:BUILDKITE_AUTHORIZED_USERS_URL="${AuthorizedUsersUrl}"
$Env:BUILDKITE_ECR_POLICY="${ECRAccessPolicy}"
$Env:BUILDKITE_TERMINATE_INSTANCE_AFTER_JOB="${BuildkiteTerminateInstanceAfterJob}"
$Env:BUILDKITE_AGENT_DISCONNECT_AFTER_UPTIME="${BuildkiteAgentDisconnectAfterUptime}"
$Env:BUILDKITE_ADDITIONAL_SUDO_PERMISSIONS="${BuildkiteAdditionalSudoPermissions}"
$Env:BUILDKITE_WINDOWS_ADMINISTRATOR="${BuildkiteWindowsAdministrator}"
$Env:AWS_DEFAULT_REGION="${AWS::Region}"
Expand Down Expand Up @@ -1652,6 +1662,7 @@ Resources:
BUILDKITE_AUTHORIZED_USERS_URL="${AuthorizedUsersUrl}" \
BUILDKITE_ECR_POLICY="${ECRAccessPolicy}" \
BUILDKITE_TERMINATE_INSTANCE_AFTER_JOB="${BuildkiteTerminateInstanceAfterJob}" \
BUILDKITE_AGENT_DISCONNECT_AFTER_UPTIME="${BuildkiteAgentDisconnectAfterUptime}" \
BUILDKITE_TERMINATE_INSTANCE_ON_DISK_FULL="${BuildkiteTerminateInstanceOnDiskFull}" \
BUILDKITE_ADDITIONAL_SUDO_PERMISSIONS="${BuildkiteAdditionalSudoPermissions}" \
AWS_DEFAULT_REGION="${AWS::Region}" \
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