upgrade(installer): Report and store policies metadata

[BaptisteFoy]

What does this PR do?

Reports policies applied and add boilerplate to add more metadata.
The policies metadata is reported through Remote Config Updater state. To permanently have it for stable / experiment versions it is stored in a file next to configuration. It is encoded in protobuf to lower footprint on customer host. The file can only be read (not written) by dd-agent & root. It is written by root only.

Motivation

Describe how to test/QA your changes

QA-ed manually, E2E test

Possible Drawbacks / Trade-offs

Additional Notes

[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=50098303 --os-family=ubuntu

Note: This applies to commit 7f5d1ac

[cit-pr-commenter]

Regression Detector

Regression Detector Results

Metrics dashboard
Target profiles
Run ID: 515522e5-aede-4082-994d-7e310ad38631

Baseline: 79b975d
Comparison: 7f5d1ac
Diff

Optimization Goals: ❌ Significant changes detected

perf	experiment	goal	Δ mean %	Δ mean % CI	trials	links
❌	pycheck_lots_of_tags	% cpu utilization	+6.93	[+3.36, +10.51]	1	Logs

Fine details of change detection per experiment

perf	experiment	goal	Δ mean %	Δ mean % CI	trials	links
❌	pycheck_lots_of_tags	% cpu utilization	+6.93	[+3.36, +10.51]	1	Logs
➖	quality_gate_idle_all_features	memory utilization	+2.08	[+1.95, +2.20]	1	Logs bounds checks dashboard
➖	file_to_blackhole_1000ms_latency	egress throughput	+0.37	[-0.40, +1.14]	1	Logs
➖	tcp_syslog_to_blackhole	ingress throughput	+0.24	[+0.18, +0.31]	1	Logs
➖	file_to_blackhole_500ms_latency	egress throughput	+0.15	[-0.61, +0.91]	1	Logs
➖	file_to_blackhole_1000ms_latency_linear_load	egress throughput	+0.02	[-0.45, +0.48]	1	Logs
➖	file_to_blackhole_100ms_latency	egress throughput	+0.00	[-0.67, +0.67]	1	Logs
➖	tcp_dd_logs_filter_exclude	ingress throughput	-0.00	[-0.01, +0.01]	1	Logs
➖	uds_dogstatsd_to_api	ingress throughput	-0.00	[-0.11, +0.11]	1	Logs
➖	file_to_blackhole_0ms_latency	egress throughput	-0.01	[-0.79, +0.78]	1	Logs
➖	otel_to_otel_logs	ingress throughput	-0.03	[-0.72, +0.66]	1	Logs
➖	file_to_blackhole_300ms_latency	egress throughput	-0.06	[-0.69, +0.57]	1	Logs
➖	file_tree	memory utilization	-0.17	[-0.32, -0.03]	1	Logs
➖	quality_gate_idle	memory utilization	-0.34	[-0.38, -0.29]	1	Logs bounds checks dashboard
➖	uds_dogstatsd_to_api_cpu	% cpu utilization	-0.88	[-1.60, -0.15]	1	Logs
➖	quality_gate_logs	% cpu utilization	-0.99	[-3.95, +1.96]	1	Logs
➖	basic_py_check	% cpu utilization	-4.08	[-7.84, -0.31]	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_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	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 lost_bytes: 10/10 replicas passed. Gate passed.
• quality_gate_logs, bounds check memory_usage: 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.

[arbll]

📦

[BaptisteFoy]

/merge

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[BaptisteFoy]

/remove

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2024-11-29 09:21:55 UTC ℹ️ Devflow: /remove

[BaptisteFoy]

/merge

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2024-11-29 16:09:16 UTC ℹ️ MergeQueue: pull request added to the queue

The median merge time in main is 23m.