Revert "[ASCII-2587] Migrating TraceAgent to use IPC cert"

[alopezz]

Reverts #31847

#incident-33344

This PR has broken new-e2e-agent-shared-components tests in main: https://gitlab.ddbuild.io/DataDog/datadog-agent/-/jobs/743239227

[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 aws.create-vm --pipeline-id=51410391 --os-family=ubuntu

Note: This applies to commit fa72eca

[agent-platform-auto-pr]

Uncompressed package size comparison

Comparison with ancestor 9f73ec4f6622e92c48f9008b7797ef5aeb9dc28f

Diff per package

package	diff	status	size	ancestor	threshold
datadog-agent-arm64-deb	0.02MB	⚠️	933.77MB	933.76MB	140.00MB
datadog-agent-aarch64-rpm	0.01MB	⚠️	942.99MB	942.97MB	140.00MB
datadog-agent-x86_64-rpm	0.01MB	⚠️	1196.99MB	1196.98MB	140.00MB
datadog-agent-x86_64-suse	0.01MB	⚠️	1196.99MB	1196.98MB	140.00MB
datadog-agent-amd64-deb	0.01MB	⚠️	1187.75MB	1187.74MB	140.00MB
datadog-iot-agent-aarch64-rpm	0.00MB	⚠️	108.84MB	108.84MB	10.00MB
datadog-dogstatsd-amd64-deb	0.00MB	✅	78.58MB	78.58MB	10.00MB
datadog-dogstatsd-x86_64-rpm	0.00MB	✅	78.65MB	78.65MB	10.00MB
datadog-dogstatsd-x86_64-suse	0.00MB	✅	78.65MB	78.65MB	10.00MB
datadog-dogstatsd-arm64-deb	0.00MB	✅	55.78MB	55.78MB	10.00MB
datadog-iot-agent-arm64-deb	0.00MB	✅	108.77MB	108.77MB	10.00MB
datadog-heroku-agent-amd64-deb	-0.00MB	✅	505.04MB	505.04MB	70.00MB
datadog-iot-agent-amd64-deb	-0.00MB	✅	113.30MB	113.30MB	10.00MB
datadog-iot-agent-x86_64-rpm	-0.00MB	✅	113.37MB	113.37MB	10.00MB
datadog-iot-agent-x86_64-suse	-0.00MB	✅	113.37MB	113.37MB	10.00MB

Decision

⚠️ Warning

[cit-pr-commenter]

Regression Detector

Regression Detector Results

Metrics dashboard
Target profiles
Run ID: d91857c1-8003-4676-93eb-04a00e86e612

Baseline: 9f73ec4
Comparison: fa72eca
Diff

Optimization Goals: ✅ No significant changes detected

Fine details of change detection per experiment

perf	experiment	goal	Δ mean %	Δ mean % CI	trials	links
➖	quality_gate_idle	memory utilization	+1.01	[+0.97, +1.06]	1	Logs bounds checks dashboard
➖	quality_gate_idle_all_features	memory utilization	+0.88	[+0.76, +1.01]	1	Logs bounds checks dashboard
➖	otel_to_otel_logs	ingress throughput	+0.36	[-0.33, +1.06]	1	Logs
➖	quality_gate_logs	% cpu utilization	+0.24	[-2.68, +3.17]	1	Logs
➖	file_to_blackhole_500ms_latency	egress throughput	+0.10	[-0.65, +0.86]	1	Logs
➖	file_to_blackhole_1000ms_latency	egress throughput	+0.09	[-0.68, +0.87]	1	Logs
➖	file_to_blackhole_0ms_latency	egress throughput	+0.02	[-0.85, +0.89]	1	Logs
➖	file_to_blackhole_0ms_latency_http1	egress throughput	+0.00	[-0.86, +0.87]	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	[-0.09, +0.08]	1	Logs
➖	file_to_blackhole_1000ms_latency_linear_load	egress throughput	-0.02	[-0.49, +0.46]	1	Logs
➖	file_to_blackhole_0ms_latency_http2	egress throughput	-0.02	[-0.98, +0.93]	1	Logs
➖	file_to_blackhole_300ms_latency	egress throughput	-0.05	[-0.68, +0.58]	1	Logs
➖	file_to_blackhole_100ms_latency	egress throughput	-0.05	[-0.80, +0.70]	1	Logs
➖	file_tree	memory utilization	-0.08	[-0.21, +0.05]	1	Logs
➖	tcp_syslog_to_blackhole	ingress throughput	-0.56	[-0.62, -0.51]	1	Logs
➖	uds_dogstatsd_to_api_cpu	% cpu utilization	-0.68	[-1.40, +0.05]	1	Logs

Bounds Checks: ❌ Failed

perf	experiment	bounds_check_name	replicates_passed	links
❌	file_to_blackhole_500ms_latency	lost_bytes	8/10
❌	file_to_blackhole_100ms_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_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	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	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_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.
• 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.