[CI] DocsClientYamlTestSuiteIT class failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic #9485 / openjdk17_checkpart1_java-fips-matrix
• elasticsearch-periodic #9471 / encryption-at-rest
• elasticsearch-periodic #9464 / encryption-at-rest
• elasticsearch-periodic #9443 / encryption-at-rest
• elasticsearch-periodic #9429 / encryption-at-rest
• elasticsearch-periodic #9415 / graalvm-ce17_checkpart1_java-matrix
• elasticsearch-periodic #9401 / encryption-at-rest
• elasticsearch-periodic #9366 / encryption-at-rest
• elasticsearch-periodic #9345 / encryption-at-rest

Reproduction Line:

./gradlew ":docs:yamlRestTest" --tests "org.elasticsearch.smoketest.DocsClientYamlTestSuiteIT.test {yaml=reference/snapshot-restore/take-snapshot/line_405}" -Dtests.seed=36FD7C36F1FB2C80 -Dtests.locale=sah -Dtests.timezone=PST8PDT -Druntime.java=17 -Dtests.fips.enabled=true

Applicable branches:
8.18

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.RuntimeException: Failure at [reference/snapshot-restore/take-snapshot:5]: Connection refused

Issue Reasons:

• [8.18] 9 failures in class org.elasticsearch.smoketest.DocsClientYamlTestSuiteIT (1.2% fail rate in 751 executions)
• [8.18] 7 failures in step encryption-at-rest (35.0% fail rate in 20 executions)
• [8.18] 9 failures in pipeline elasticsearch-periodic (42.9% fail rate in 21 executions)

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

[elasticsearchmachine]

Pinging @elastic/es-delivery (Team:Delivery)