feat: allow disabling KubernetesHealthIndicator using endpoints.healt…

…h.kubernetes.enabled: false (#755)

kubernetes-discovery-client/src/main/java/io/micronaut/kubernetes/health/KubernetesHealthIndicator.java

@@ -22,6 +22,7 @@
 import io.kubernetes.client.openapi.models.V1PodStatus;
 import io.micronaut.context.annotation.Requires;
 import io.micronaut.context.env.Environment;
+import io.micronaut.core.util.StringUtils;
 import io.micronaut.health.HealthStatus;
 import io.micronaut.kubernetes.KubernetesConfiguration;
 import io.micronaut.kubernetes.client.reactor.CoreV1ApiReactorClient;
@@ -50,6 +51,7 @@
 @Requires(beans = HealthEndpoint.class)
 @Requires(env = Environment.KUBERNETES)
 @Requires(property = HOSTNAME_ENV_VARIABLE_IN_PROPERTY_FORMAT)
+@Requires(property = HealthEndpoint.PREFIX + ".kubernetes.enabled", notEquals = StringUtils.FALSE)
 public class KubernetesHealthIndicator extends AbstractHealthIndicator<Map<String, Object>> {
 
     public static final String NAME = "kubernetes";

src/main/docs/guide/health-checks.adoc

@@ -84,3 +84,13 @@ Also note that in order to see the full details of the health checks you may nee
 https://docs.micronaut.io/latest/guide/index.html#healthEndpoint[the documentation of the Health Endpoint] for more
 information about how to configure it.
 ====
+
+By default the KubernetesHealthIndicator is enabled. To disable it use the following configuration:
+
+[source,yaml]
+----
+endpoints:
+  health:
+    kubernetes:
+      enabled: false
+----