ClientOptionsBuilder configureOptionsExceptHttpLogging(ClientOptionsBuilder options) {
    options.factory(clientFactory).responseTimeoutMillis(timeout).writeTimeoutMillis(timeout);
    customizers.forEach(c -> c.accept(options));
    return options;
  }
This takes care to not expose health checks into wire level logging
zipkin-server/src/main/java/zipkin2/server/internal/elasticsearch/HttpClientFactory.java