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[cri-o] Stop querying image status endpoint when image metadata collection is disabled #35112
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Uncompressed package size comparisonComparison with ancestor Size reduction summary
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Decision✅ Passed |
Test changes on VMUse this command from test-infra-definitions to manually test this PR changes on a VM: dda inv aws.create-vm --pipeline-id=58895388 --os-family=ubuntu Note: This applies to commit 88b6169 |
Static quality checks ✅Please find below the results from static quality gates Successful checksInfo
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Regression DetectorRegression Detector ResultsMetrics dashboard Baseline: 58383be Optimization Goals: ✅ No significant changes detected
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perf | experiment | goal | Δ mean % | Δ mean % CI | trials | links |
---|---|---|---|---|---|---|
➖ | quality_gate_logs | % cpu utilization | +2.92 | [+0.01, +5.83] | 1 | Logs |
➖ | file_tree | memory utilization | +0.48 | [+0.29, +0.67] | 1 | Logs |
➖ | uds_dogstatsd_to_api_cpu | % cpu utilization | +0.36 | [-0.49, +1.21] | 1 | Logs |
➖ | quality_gate_idle_all_features | memory utilization | +0.33 | [+0.25, +0.42] | 1 | Logs bounds checks dashboard |
➖ | file_to_blackhole_300ms_latency | egress throughput | +0.03 | [-0.59, +0.66] | 1 | Logs |
➖ | file_to_blackhole_0ms_latency_http1 | egress throughput | +0.00 | [-0.79, +0.80] | 1 | Logs |
➖ | tcp_dd_logs_filter_exclude | ingress throughput | -0.00 | [-0.02, +0.02] | 1 | Logs |
➖ | file_to_blackhole_100ms_latency | egress throughput | -0.00 | [-0.66, +0.65] | 1 | Logs |
➖ | file_to_blackhole_0ms_latency | egress throughput | -0.01 | [-0.87, +0.85] | 1 | Logs |
➖ | uds_dogstatsd_to_api | ingress throughput | -0.01 | [-0.34, +0.32] | 1 | Logs |
➖ | file_to_blackhole_500ms_latency | egress throughput | -0.02 | [-0.80, +0.77] | 1 | Logs |
➖ | file_to_blackhole_0ms_latency_http2 | egress throughput | -0.05 | [-0.86, +0.76] | 1 | Logs |
➖ | file_to_blackhole_1000ms_latency_linear_load | egress throughput | -0.21 | [-0.67, +0.26] | 1 | Logs |
➖ | uds_dogstatsd_20mb_12k_contexts_20_senders | memory utilization | -0.31 | [-0.35, -0.26] | 1 | Logs |
➖ | file_to_blackhole_1000ms_latency | egress throughput | -0.37 | [-1.15, +0.40] | 1 | Logs |
➖ | quality_gate_idle | memory utilization | -0.39 | [-0.46, -0.31] | 1 | Logs bounds checks dashboard |
➖ | tcp_syslog_to_blackhole | ingress throughput | -0.90 | [-0.97, -0.84] | 1 | Logs |
Bounds Checks: ✅ Passed
perf | experiment | bounds_check_name | replicates_passed | links |
---|---|---|---|---|
✅ | file_to_blackhole_0ms_latency | lost_bytes | 10/10 | |
✅ | file_to_blackhole_0ms_latency | memory_usage | 10/10 | |
✅ | file_to_blackhole_0ms_latency_http1 | lost_bytes | 10/10 | |
✅ | file_to_blackhole_0ms_latency_http1 | memory_usage | 10/10 | |
✅ | file_to_blackhole_0ms_latency_http2 | lost_bytes | 10/10 | |
✅ | file_to_blackhole_0ms_latency_http2 | memory_usage | 10/10 | |
✅ | file_to_blackhole_1000ms_latency | memory_usage | 10/10 | |
✅ | file_to_blackhole_1000ms_latency_linear_load | memory_usage | 10/10 | |
✅ | file_to_blackhole_100ms_latency | lost_bytes | 10/10 | |
✅ | file_to_blackhole_100ms_latency | memory_usage | 10/10 | |
✅ | file_to_blackhole_300ms_latency | lost_bytes | 10/10 | |
✅ | file_to_blackhole_300ms_latency | memory_usage | 10/10 | |
✅ | file_to_blackhole_500ms_latency | lost_bytes | 10/10 | |
✅ | file_to_blackhole_500ms_latency | memory_usage | 10/10 | |
✅ | quality_gate_idle | intake_connections | 10/10 | bounds checks dashboard |
✅ | quality_gate_idle | memory_usage | 10/10 | bounds checks dashboard |
✅ | quality_gate_idle_all_features | intake_connections | 10/10 | bounds checks dashboard |
✅ | quality_gate_idle_all_features | memory_usage | 10/10 | bounds checks dashboard |
✅ | quality_gate_logs | intake_connections | 10/10 | |
✅ | quality_gate_logs | lost_bytes | 10/10 | |
✅ | quality_gate_logs | memory_usage | 10/10 |
Explanation
Confidence level: 90.00%
Effect size tolerance: |Δ mean %| ≥ 5.00%
Performance changes are noted in the perf column of each table:
- ✅ = significantly better comparison variant performance
- ❌ = significantly worse comparison variant performance
- ➖ = no significant change in performance
A regression test is an A/B test of target performance in a repeatable rig, where "performance" is measured as "comparison variant minus baseline variant" for an optimization goal (e.g., ingress throughput). Due to intrinsic variability in measuring that goal, we can only estimate its mean value for each experiment; we report uncertainty in that value as a 90.00% confidence interval denoted "Δ mean % CI".
For each experiment, we decide whether a change in performance is a "regression" -- a change worth investigating further -- if all of the following criteria are true:
-
Its estimated |Δ mean %| ≥ 5.00%, indicating the change is big enough to merit a closer look.
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Its 90.00% confidence interval "Δ mean % CI" does not contain zero, indicating that if our statistical model is accurate, there is at least a 90.00% chance there is a difference in performance between baseline and comparison variants.
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Its configuration does not mark it "erratic".
CI Pass/Fail Decision
✅ Passed. All Quality Gates passed.
- quality_gate_idle_all_features, bounds check intake_connections: 10/10 replicas passed. Gate passed.
- quality_gate_idle_all_features, bounds check memory_usage: 10/10 replicas passed. Gate passed.
- quality_gate_logs, bounds check memory_usage: 10/10 replicas passed. Gate passed.
- quality_gate_logs, bounds check lost_bytes: 10/10 replicas passed. Gate passed.
- quality_gate_logs, bounds check intake_connections: 10/10 replicas passed. Gate passed.
- quality_gate_idle, bounds check intake_connections: 10/10 replicas passed. Gate passed.
- quality_gate_idle, bounds check memory_usage: 10/10 replicas passed. Gate passed.
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Looks great! Just a couple of very minor suggestions for the release note 🙂
releasenotes/notes/crio-only-query-image-status-when-metadata-41c34db6f7309784.yaml
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…41c34db6f7309784.yaml Co-authored-by: Janine Chan <[email protected]>
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What does this PR do?
Updates the CRI-O workloadmeta collector to only query the ImageStatus endpoint if
container_image.enabled
is trueMotivation
Currently, the ImageStatus endpoint exposed by the CRI-O server logs every time a connection is made to it. This causes the journald logs to slowly increase in size, until eventually the node has too much disk pressure and becomes unschedulable.
We should only be using this endpoint to collect information about the image layers themselves, for the purposes of image metadata collection. However, when image metadata collection was disabled, this endpoint was still being queried to fetch the image repo digest and repo tag, both of which are exposed in the container status.
Describe how you validated your changes
Deploy the agent in cri-o via helm (I did so using minikube), with container image collection disabled:
Validate that there are no
container_image_metadata
entries in the output ofagent workload-list -v
Validate that there are no log entries related to ImageStatus in the output of
sudo journalctl -xe
on the minikube node (or, that, over time the overall size of/run/log/journal/
is not dramatically increasing)I have already done all of the above, as well as deployed the agent with and without this change to validate the workloadmeta objects match:
Before:
After:
(ignore differences in Cgroup path and container IDs, I had to restart the cluster)
Possible Drawbacks / Trade-offs
Additional Notes