Merge branch '3.2.x' into 3.3.x

Closes gh-42285

Author: philwebb

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/jmx/JmxProperties.java

@@ -29,7 +29,7 @@
 public class JmxProperties {
 
 	/**
-	 * Expose management beans to the JMX domain.
+	 * Expose Spring's management beans to the JMX domain.
 	 */
 	private boolean enabled = false;
 

spring-boot-project/spring-boot-dependencies/build.gradle

@@ -1118,6 +1118,7 @@ bom {
 		}
 		links {
 			site("https://logging.apache.org/log4j")
+			docs { version -> "https://logging.apache.org/log4j/%s.x/manual".formatted(version.major()) }
 			releaseNotes("https://github.com/apache/logging-log4j2/releases/tag/rel%2F{version}")
 		}
 	}
@@ -1591,6 +1592,7 @@ bom {
 		}
 		links {
 			site("https://github.com/quartz-scheduler/quartz")
+			javadoc("https://www.javadoc.io/doc/org.quartz-scheduler/quartz/{version}")
 		}
 	}
 	library("QueryDSL", "5.1.0") {

spring-boot-project/spring-boot-docs/src/docs/antora/modules/reference/pages/actuator/jmx.adoc

@@ -10,6 +10,9 @@ Any of your beans that are annotated with Spring JMX annotations (`@ManagedResou
 If your platform provides a standard `MBeanServer`, Spring Boot uses that and defaults to the VM `MBeanServer`, if necessary.
 If all that fails, a new `MBeanServer` is created.
 
+NOTE: `spring.jmx.enabled` affects only the management beans provided by Spring.
+Enabling management beans provided by other libraries (for example {url-log4j2-docs}/jmx.html[Log4j2] or {url-quartz-javadoc}/constant-values.html#org.quartz.impl.StdSchedulerFactory.PROP_SCHED_JMX_EXPORT[Quartz]) is independent.
+
 See the {code-spring-boot-autoconfigure-src}/jmx/JmxAutoConfiguration.java[`JmxAutoConfiguration`] class for more details.
 
 By default, Spring Boot also exposes management endpoints as JMX MBeans under the `org.springframework.boot` domain.