fix: prewarm containerd in boothook#8604
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Pull request overview
This PR moves Linux node bootstrap prewarming earlier into boothook, adjusts snapshot/log collector service startup behavior, and updates an E2E Azure CNI overlay scenario to pass overlay-specific bootstrap labels.
Changes:
- Adds boothook prewarming for containerd metadata/snapshots and loads the overlay kernel module.
- Moves snapshot-update startup later in provisioning and makes it non-blocking.
- Updates E2E cluster metadata to expose VNet resource GUID for Azure CNI overlay bootstrap labels.
Reviewed changes
Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.
Show a summary per file
| File | Description |
|---|---|
pkg/agent/baker.go |
Adds early boothook prewarming and overlay module loading. |
parts/linux/cloud-init/artifacts/disk_queue.service |
Adds a startup sleep before disk queue tuning. |
parts/linux/cloud-init/artifacts/cse_main.sh |
Removes containerd prewarm from basePrep and starts snapshot update after kubelet/log collector setup. |
parts/linux/cloud-init/artifacts/cse_config.sh |
Changes snapshot-update timer startup to non-blocking. |
parts/linux/cloud-init/artifacts/aks-log-collector.service |
Adds an install target for the service unit. |
e2e/scenario_test.go |
Updates the Ubuntu 22.04 Azure CNI scenario to use overlay bootstrap labels. |
e2e/cluster.go |
Adds VNet resource GUID discovery to cluster preparation. |
Devinwong
reviewed
May 28, 2026
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Devinwong
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May 29, 2026
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