[Backport 7.61.x] Query Aurora instances per cluster

[agent-platform-auto-pr]

Backport d255f0c from #31846.

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What does this PR do?

Updates Aurora autodiscovery to query database instances per cluster.

Motivation

DescribeDBInstances has a limit of 100 instances per call. As a first pass at handling large AWS RDS installations this will allow the agent to autodiscover up to 100 instances per cluster, rather than 100 instances total.

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Mocked tests have been updated but full confirmation can only be done in a deployment to a customer with a large number of Aurora instances being autodiscovered.

Possible Drawbacks / Trade-offs

Additional Notes

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[agent-platform-auto-pr]

Test changes on VM

Use this command from test-infra-definitions to manually test this PR changes on a VM:

inv create-vm --pipeline-id=50483711 --os-family=ubuntu

Note: This applies to commit 675c35e

[sethsamuel]

/merge

[dd-devflow]

Devflow running: /merge

View all feedbacks in Devflow UI.

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2024-12-06 21:07:19 UTC ℹ️ MergeQueue: pull request added to the queue

The median merge time in 7.61.x is 25m.

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2024-12-06 21:12:23 UTC ❌ MergeQueue: The build pipeline contains failing jobs for this merge request

Build pipeline has failing jobs for 9c0666b:

• ddflare_extension_ocb_build

⚠️ Do NOT retry failed jobs directly (why?).

What to do next?

• Investigate the failures and when ready, re-add your pull request to the queue!
• Any question, go check the FAQ.

Details

Since those jobs are not marked as being allowed to fail, the pipeline will most likely fail.
Therefore, and to allow other builds to be processed, this merge request has been rejected and the pipeline got canceled.

[agent-platform-auto-pr]

[Fast Unit Tests Report]

On pipeline 50483711 (CI Visibility). The following jobs did not run any unit tests:

Jobs:

• tests_flavor_dogstatsd_deb-x64
• tests_flavor_heroku_deb-x64
• tests_flavor_iot_deb-x64

If you modified Go files and expected unit tests to run in these jobs, please double check the job logs. If you think tests should have been executed reach out to #agent-devx-help

[cit-pr-commenter]

Regression Detector

Regression Detector Results

Metrics dashboard
Target profiles
Run ID: 3ad32541-255d-446f-b354-cba21532fc73

Baseline: ed82389
Comparison: 675c35e
Diff

Optimization Goals: ✅ No significant changes detected

Fine details of change detection per experiment

perf	experiment	goal	Δ mean %	Δ mean % CI	trials	links
➖	basic_py_check	% cpu utilization	+1.68	[-2.23, +5.60]	1	Logs
➖	file_to_blackhole_1000ms_latency	egress throughput	+0.41	[-0.39, +1.20]	1	Logs
➖	quality_gate_idle	memory utilization	+0.28	[+0.24, +0.33]	1	Logs bounds checks dashboard
➖	file_to_blackhole_1000ms_latency_linear_load	egress throughput	+0.26	[-0.21, +0.73]	1	Logs
➖	file_to_blackhole_300ms_latency	egress throughput	+0.15	[-0.48, +0.79]	1	Logs
➖	tcp_dd_logs_filter_exclude	ingress throughput	-0.00	[-0.02, +0.01]	1	Logs
➖	file_to_blackhole_100ms_latency	egress throughput	-0.00	[-0.76, +0.75]	1	Logs
➖	uds_dogstatsd_to_api	ingress throughput	-0.01	[-0.11, +0.10]	1	Logs
➖	file_to_blackhole_0ms_latency	egress throughput	-0.06	[-0.90, +0.77]	1	Logs
➖	uds_dogstatsd_to_api_cpu	% cpu utilization	-0.09	[-0.81, +0.63]	1	Logs
➖	otel_to_otel_logs	ingress throughput	-0.13	[-0.76, +0.50]	1	Logs
➖	file_tree	memory utilization	-0.23	[-0.39, -0.07]	1	Logs
➖	tcp_syslog_to_blackhole	ingress throughput	-0.28	[-0.34, -0.23]	1	Logs
➖	file_to_blackhole_500ms_latency	egress throughput	-0.30	[-1.07, +0.47]	1	Logs
➖	quality_gate_idle_all_features	memory utilization	-0.46	[-0.58, -0.35]	1	Logs bounds checks dashboard
➖	pycheck_lots_of_tags	% cpu utilization	-0.71	[-4.08, +2.67]	1	Logs
➖	quality_gate_logs	% cpu utilization	-1.81	[-4.73, +1.11]	1	Logs

Bounds Checks: ❌ Failed

perf	experiment	bounds_check_name	replicates_passed	links
❌	file_to_blackhole_300ms_latency	lost_bytes	9/10
✅	file_to_blackhole_0ms_latency	lost_bytes	10/10
✅	file_to_blackhole_0ms_latency	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	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	memory_usage	10/10	bounds checks dashboard
✅	quality_gate_idle_all_features	memory_usage	10/10	bounds checks dashboard
✅	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:

1. Its estimated |Δ mean %| ≥ 5.00%, indicating the change is big enough to merit a closer look.

2. 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.

3. Its configuration does not mark it "erratic".

CI Pass/Fail Decision

✅ Passed. All Quality Gates 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_idle, bounds check memory_usage: 10/10 replicas passed. Gate passed.
• quality_gate_idle_all_features, bounds check memory_usage: 10/10 replicas passed. Gate passed.

[sethsamuel]

/merge

[dd-devflow]

Devflow running: /merge

View all feedbacks in Devflow UI.

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2024-12-06 22:25:15 UTC ℹ️ MergeQueue: pull request added to the queue

The median merge time in 7.61.x is 25m.

---

2024-12-06 22:30:15 UTC ❌ MergeQueue: The build pipeline contains failing jobs for this merge request

Build pipeline has failing jobs for e08193a:

• ddflare_extension_ocb_build

⚠️ Do NOT retry failed jobs directly (why?).

What to do next?

• Investigate the failures and when ready, re-add your pull request to the queue!
• Any question, go check the FAQ.

Details

Since those jobs are not marked as being allowed to fail, the pipeline will most likely fail.
Therefore, and to allow other builds to be processed, this merge request has been rejected and the pipeline got canceled.