**Build scan:**
https://gradle-enterprise.elastic.co/s/ff6b7vchgnbps/tests/:server:internalClusterTest/org.elasticsearch.readiness.ReadinessClusterIT/testNotReadyOnBadFileSettings

**Reproduction line:**
```
./gradlew ':server:internalClusterTest' --tests "org.elasticsearch.readiness.ReadinessClusterIT.testNotReadyOnBadFileSettings" -Dtests.seed=CFBF9AB86C96D74 -Dtests.locale=lt -Dtests.timezone=Australia/North -Druntime.java=17
```

**Applicable branches:**
main, 8.6

**Reproduces locally?:**
Didn't try

**Failure history:**
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.readiness.ReadinessClusterIT&tests.test=testNotReadyOnBadFileSettings

**Failure excerpt:**
```
java.lang.AssertionError: (No message provided)

  at __randomizedtesting.SeedInfo.seed([CFBF9AB86C96D74:5569B5C2DBD78C34]:0)
  at org.junit.Assert.fail(Assert.java:86)
  at org.junit.Assert.assertTrue(Assert.java:41)
  at org.junit.Assert.assertTrue(Assert.java:52)
  at org.elasticsearch.readiness.ReadinessClusterIT.testNotReadyOnBadFileSettings(ReadinessClusterIT.java:267)
  at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-2)
  at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
  at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:568)
  at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1758)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:946)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:982)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:996)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at org.apache.lucene.tests.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:44)
  at org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
  at org.apache.lucene.tests.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:45)
  at org.apache.lucene.tests.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:60)
  at org.apache.lucene.tests.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:44)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:390)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:843)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:490)
  at com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:955)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:840)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:891)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:902)
  at org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at org.apache.lucene.tests.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:38)
  at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
  at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at org.apache.lucene.tests.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
  at org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
  at org.apache.lucene.tests.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:44)
  at org.apache.lucene.tests.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:60)
  at org.apache.lucene.tests.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:47)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:390)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl.lambda$forkTimeoutingTask$0(ThreadLeakControl.java:850)
  at java.lang.Thread.run(Thread.java:833)

```
server/src/internalClusterTest/java/org/elasticsearch/readiness/ReadinessClusterIT.java
metadataVersion.set(event.state().metadata().version());
                        savedClusterState.countDown();
                    }
                }
            }
        });
        return new Tuple<>(savedClusterState, metadataVersion);
    }
    public void testReadyAfterCorrectFileSettings() throws Exception {
        internalCluster().setBootstrapMasterNodeIndex(0);
        logger.info("--> start data node / non master node");
        String dataNode = internalCluster().startNode(Settings.builder().put(dataOnlyNode()).put("discovery.initial_state_timeout", "1s"));
        FileSettingsService dataFileSettingsService = internalCluster().getInstance(FileSettingsService.class, dataNode);
        assertFalse(dataFileSettingsService.watching());
        var savedClusterState = setupClusterStateListener(dataNode);
        logger.info("--> write correct file settings before we boot master node");
        writeJSONFile(dataNode, testJSON);
        logger.info("--> start master node");
        final String masterNode = internalCluster().startMasterOnlyNode();
        assertMasterNode(internalCluster().nonMasterClient(), masterNode);
        FileSettingsService masterFileSettingsService = internalCluster().getInstance(FileSettingsService.class, masterNode);
        assertTrue(masterFileSettingsService.watching());
        assertFalse(dataFileSettingsService.watching());
        boolean awaitSuccessful = savedClusterState.v1().await(20, TimeUnit.SECONDS);
        assertTrue(awaitSuccessful);
        ReadinessService s = internalCluster().getInstance(ReadinessService.class, internalCluster().getMasterName());
        tcpReadinessProbeTrue(s);
    }
}