@@ -21,11 +21,6 @@ import zipkin2.server.internal.banner.ZipkinBanner;
 @SpringBootApplication
 @EnableZipkinServer
 public class ZipkinServer {
-  static {
-    // Make sure java.util.logging goes to log4j2
-    // https://docs.spring.io/spring-boot/docs/current/reference/html/howto-logging.html#howto-configure-log4j-for-logging
-    System.setProperty("java.util.logging.manager", "org.apache.logging.log4j.jul.LogManager");
-  }
 
   public static void main(String[] args) {
     new SpringApplicationBuilder(ZipkinServer.class)
/*
 * Copyright 2015-2019 The OpenZipkin Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package zipkin.server;

import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import zipkin2.server.internal.EnableZipkinServer;
import zipkin2.server.internal.banner.ZipkinBanner;

@SpringBootApplication
@EnableZipkinServer
public class ZipkinServer {
  static {
    // Make sure java.util.logging goes to log4j2
    // https://docs.spring.io/spring-boot/docs/current/reference/html/howto-logging.html#howto-configure-log4j-for-logging
    System.setProperty("java.util.logging.manager", "org.apache.logging.log4j.jul.LogManager");
  }

  public static void main(String[] args) {
    new SpringApplicationBuilder(ZipkinServer.class)
      .banner(new ZipkinBanner())
      .properties("spring.config.name=zipkin-server").run(args);
  }
}

think maybe need to install the logging bridge (you can try hitting the dependencies endpoint on trace level when you have spans loaded)