[CI] SmokeTestMonitoringWithSecurityIT testHTTPExporterWithSSL failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic-platform-support #9441 / almalinux-8-aarch64_checkpart3_platform-support-arm
• elasticsearch-periodic-platform-support #9308 / rocky-9_platform-support-unix

Reproduction Line:

./gradlew ":x-pack:qa:smoke-test-plugins-ssl:yamlRestTest" --tests "org.elasticsearch.smoketest.SmokeTestMonitoringWithSecurityIT.testHTTPExporterWithSSL" -Dtests.seed=2D367D8BEC2FFD33 -Dtests.locale=fil-PH -Dtests.timezone=Canada/Yukon -Druntime.java=24

Applicable branches:
8.19

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

org.elasticsearch.client.ResponseException: method [GET], host [https://127.0.0.1:44259], URI [/_xpack/usage], status line [HTTP/1.1 503 Service Unavailable]
{"error":{"root_cause":[{"type":"unavailable_shards_exception","reason":"at least one search shard for the index [.security-7] is unavailable","suppressed":[{"type":"unavailable_shards_exception","reason":"at least one search shard for the index [.security-7] is unavailable"}]}],"type":"unavailable_shards_exception","reason":"at least one search shard for the index [.security-7] is unavailable","suppressed":[{"type":"unavailable_shards_exception","reason":"at least one search shard for the index [.security-7] is unavailable"}]},"status":503}

Issue Reasons:

• [8.19] 2 failures in test testHTTPExporterWithSSL (0.3% fail rate in 623 executions)
• [8.19] 2 failures in pipeline elasticsearch-periodic-platform-support (10.0% fail rate in 20 executions)

Note:
This issue was created using new test triage automation. Please report issues or feedback to es-delivery.

[elasticsearchmachine]

Pinging @elastic/es-security (Team:Security)