rptest: move cluster config export to @cluster

[travisdowns]

This should be done only once, don't do it on service stop, but in the @cluster cleanup code, before we stop redpanda.

This saves six seconds on every test, since the second export (due to the second stop) took six seconds. Hat tip to Stephan for noticing this.

Backports Required

• none - not a bug fix
• none - this is a backport
• none - issue does not exist in previous branches
• none - papercut/not impactful enough to backport
• v25.2.x
• v25.1.x
• v24.3.x

Release Notes

• none

[Copilot]

Pull Request Overview

This PR optimizes test execution time by moving cluster configuration export to the @cluster cleanup phase instead of during service stop. This eliminates duplicate configuration exports when services are stopped multiple times, saving approximately 6 seconds per test.

Key changes:

• Moves export_cluster_config() call from stop() method to @cluster cleanup
• Adds abstract method definition for export_cluster_config() in base class
• Extracts configuration export logic into separate method

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
tests/rptest/services/redpanda.py	Extracts cluster config export from stop() method and adds abstract method definition
tests/rptest/services/cluster.py	Calls export_cluster_config() during @cluster cleanup phase

[vbotbuildovich]

Retry command for Build#72845

please wait until all jobs are finished before running the slash command

/ci-repeat 1
tests/rptest/tests/audit_log_test.py::AuditLogTestInvalidConfig.test_invalid_config@{"audit_transport_mode":"kclient"}
tests/rptest/tests/audit_log_test.py::AuditLogTestInvalidConfigMTLS.test_invalid_config_mtls@{"audit_transport_mode":"kclient"}

[vbotbuildovich]

CI test results

test results on build#72845

test_class	test_method	test_arguments	test_kind	job_url	test_status	passed	reason	test_history
AuditLogTestInvalidConfig	test_invalid_config	{"audit_transport_mode": "kclient"}	integration	https://buildkite.com/redpanda/redpanda/builds/72845#01997c49-3b84-426f-9e67-abaa137d548a	FAIL	0/21	The test has failed across all retries	https://redpanda.metabaseapp.com/dashboard/87-tests?tab=142-dt-individual-test-history&test_class=AuditLogTestInvalidConfig&test_method=test_invalid_config
AuditLogTestInvalidConfig	test_invalid_config	{"audit_transport_mode": "kclient"}	integration	https://buildkite.com/redpanda/redpanda/builds/72845#01997c4d-5cb9-461e-9234-28766361c3be	FAIL	0/21	The test has failed across all retries	https://redpanda.metabaseapp.com/dashboard/87-tests?tab=142-dt-individual-test-history&test_class=AuditLogTestInvalidConfig&test_method=test_invalid_config
AuditLogTestInvalidConfigMTLS	test_invalid_config_mtls	{"audit_transport_mode": "kclient"}	integration	https://buildkite.com/redpanda/redpanda/builds/72845#01997c49-3b85-412f-b4ca-ad248932eb9e	FAIL	0/21	The test has failed across all retries	https://redpanda.metabaseapp.com/dashboard/87-tests?tab=142-dt-individual-test-history&test_class=AuditLogTestInvalidConfigMTLS&test_method=test_invalid_config_mtls
AuditLogTestInvalidConfigMTLS	test_invalid_config_mtls	{"audit_transport_mode": "kclient"}	integration	https://buildkite.com/redpanda/redpanda/builds/72845#01997c4d-5cbb-4aea-ad11-cd0d5ab992e7	FAIL	0/21	The test has failed across all retries	https://redpanda.metabaseapp.com/dashboard/87-tests?tab=142-dt-individual-test-history&test_class=AuditLogTestInvalidConfigMTLS&test_method=test_invalid_config_mtls
EndToEndCloudTopicsTest	test_write	null	integration	https://buildkite.com/redpanda/redpanda/builds/72845#01997c4d-5cbd-4976-a6b6-4b4acbf607a9	FLAKY	14/21	upstream reliability is '92.96875'. current run reliability is '66.66666666666666'. drift is 26.30208 and the allowed drift is set to 50. The test should PASS	https://redpanda.metabaseapp.com/dashboard/87-tests?tab=142-dt-individual-test-history&test_class=EndToEndCloudTopicsTest&test_method=test_write
ClusterRateQuotaTest	test_client_response_and_produce_throttle_mechanism	null	integration	https://buildkite.com/redpanda/redpanda/builds/72845#01997c4d-5cb7-4e71-9365-2aaa4ce651ab	FLAKY	13/21	upstream reliability is '81.25613346418056'. current run reliability is '61.904761904761905'. drift is 19.35137 and the allowed drift is set to 50. The test should PASS	https://redpanda.metabaseapp.com/dashboard/87-tests?tab=142-dt-individual-test-history&test_class=ClusterRateQuotaTest&test_method=test_client_response_and_produce_throttle_mechanism
ClusterRateQuotaTest	test_client_response_throttle_mechanism_applies_to_next_request	null	integration	https://buildkite.com/redpanda/redpanda/builds/72845#01997c49-3b85-4635-a3af-6ef2a2cafbf9	FLAKY	12/21	upstream reliability is '84.8'. current run reliability is '57.14285714285714'. drift is 27.65714 and the allowed drift is set to 50. The test should PASS	https://redpanda.metabaseapp.com/dashboard/87-tests?tab=142-dt-individual-test-history&test_class=ClusterRateQuotaTest&test_method=test_client_response_throttle_mechanism_applies_to_next_request
ControllerLogLimitMirrorMakerTests	test_mirror_maker_with_limits	null	integration	https://buildkite.com/redpanda/redpanda/builds/72845#01997c4d-5cba-4596-9286-6863e93df805	FLAKY	19/21	upstream reliability is '99.57264957264957'. current run reliability is '90.47619047619048'. drift is 9.09646 and the allowed drift is set to 50. The test should PASS	https://redpanda.metabaseapp.com/dashboard/87-tests?tab=142-dt-individual-test-history&test_class=ControllerLogLimitMirrorMakerTests&test_method=test_mirror_maker_with_limits
DisablingPartitionsTest	test_disable	null	integration	https://buildkite.com/redpanda/redpanda/builds/72845#01997c49-3b87-4452-9699-3cd70040c6e3	FLAKY	17/21	upstream reliability is '84.25925925925925'. current run reliability is '80.95238095238095'. drift is 3.30688 and the allowed drift is set to 50. The test should PASS	https://redpanda.metabaseapp.com/dashboard/87-tests?tab=142-dt-individual-test-history&test_class=DisablingPartitionsTest&test_method=test_disable
TopicRecoveryTest	test_prevent_recovery	{"cloud_storage_type": 1}	integration	https://buildkite.com/redpanda/redpanda/builds/72845#01997c49-3b86-4c6e-a1e1-60c2fd8d6ae2	FLAKY	20/21	upstream reliability is '96.6542750929368'. current run reliability is '95.23809523809523'. drift is 1.41618 and the allowed drift is set to 50. The test should PASS	https://redpanda.metabaseapp.com/dashboard/87-tests?tab=142-dt-individual-test-history&test_class=TopicRecoveryTest&test_method=test_prevent_recovery

test results on build#72911

test_class	test_method	test_arguments	test_kind	job_url	test_status	passed	reason	test_history
AuditLogTestKafkaApi	test_no_auth_enabled	{"audit_transport_mode": "rpc"}	integration	https://buildkite.com/redpanda/redpanda/builds/72911#01997edb-f69b-4df3-a226-c3fd1e706dda	FLAKY	20/21	upstream reliability is '100.0'. current run reliability is '95.23809523809523'. drift is 4.7619 and the allowed drift is set to 50. The test should PASS	https://redpanda.metabaseapp.com/dashboard/87-tests?tab=142-dt-individual-test-history&test_class=AuditLogTestKafkaApi&test_method=test_no_auth_enabled
ClusterRateQuotaTest	test_client_response_and_produce_throttle_mechanism	null	integration	https://buildkite.com/redpanda/redpanda/builds/72911#01997ee2-916b-4720-8cbb-ed8ac27057b5	FAIL	0/1		https://redpanda.metabaseapp.com/dashboard/87-tests?tab=142-dt-individual-test-history&test_class=ClusterRateQuotaTest&test_method=test_client_response_and_produce_throttle_mechanism
ClusterRateQuotaTest	test_client_response_throttle_mechanism	null	integration	https://buildkite.com/redpanda/redpanda/builds/72911#01997ee2-916c-4cad-a232-8416b00eeb51	FLAKY	16/21	upstream reliability is '81.93493150684932'. current run reliability is '76.19047619047619'. drift is 5.74446 and the allowed drift is set to 50. The test should PASS	https://redpanda.metabaseapp.com/dashboard/87-tests?tab=142-dt-individual-test-history&test_class=ClusterRateQuotaTest&test_method=test_client_response_throttle_mechanism
RandomNodeOperationsTest	test_node_operations	{"cloud_storage_type": 2, "compaction_mode": "adjacent_merge", "enable_failures": true, "mixed_versions": false, "with_iceberg": false}	integration	https://buildkite.com/redpanda/redpanda/builds/72911#01997edb-f693-4cca-b714-ad6d5de0c52d	FLAKY	20/21	upstream reliability is '100.0'. current run reliability is '95.23809523809523'. drift is 4.7619 and the allowed drift is set to 50. The test should PASS	https://redpanda.metabaseapp.com/dashboard/87-tests?tab=142-dt-individual-test-history&test_class=RandomNodeOperationsTest&test_method=test_node_operations
WriteCachingFailureInjectionE2ETest	test_crash_all	{"use_transactions": false}	integration	https://buildkite.com/redpanda/redpanda/builds/72911#01997edb-f699-47bf-8be1-a07ce85edacb	FLAKY	17/21	upstream reliability is '94.83101391650099'. current run reliability is '80.95238095238095'. drift is 13.87863 and the allowed drift is set to 50. The test should PASS	https://redpanda.metabaseapp.com/dashboard/87-tests?tab=142-dt-individual-test-history&test_class=WriteCachingFailureInjectionE2ETest&test_method=test_crash_all

[travisdowns]

dccc4ab moves slightly the config check since in this audit test is produces an exact bad log line (because auditing is misconfigurated, this request fails), so just move it below the BLL check.

[travisdowns]

this push of c6d0059 removes some checks I added a while ago because we needed to swap the Service and RedpandaABC order, as ABC must occur after Service in the MRO for @AbstractMethod in ABC to be implemented in Service. We can be quite sure by now that the two base classes concerned do have those attributes by now!