Configure custom access log for spring-boot reactive management server/port using WebServerCustomizer

Question

I try to configure a custom access log for the management server of my reactive spring-cloud-gateway application.

For the default server i can do this by using a WebServerFactoryCustomizer like:

import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.actuate.autoconfigure.web.ManagementContextConfiguration;
import org.springframework.boot.web.embedded.netty.NettyReactiveWebServerFactory;
import org.springframework.boot.web.server.WebServerFactoryCustomizer;
import org.springframework.context.annotation.Bean;

@Slf4j
@Configuration
public class DefaultServerConfig {

    @Bean
    public WebServerFactoryCustomizer<NettyReactiveWebServerFactory> defaultServerCustomizer() {
        return factory -> factory.addServerCustomizers((httpServer) -> {
            log.info("Enable custom AccessLog for default server on bind: {}", httpServer.configuration().bindAddress().get());
            return httpServer.accessLog(true, CustomAccessLog::createExtLog);
        });
    }
}

which works perfectly fine.

For the management server i tried to accomplish the same by using @ManagementContextConfiguration like:

@Slf4j
@ManagementContextConfiguration
public class ManagementServerConfig {

    @Bean
    public WebServerFactoryCustomizer<NettyReactiveWebServerFactory> managementServerCustomizer() {
        return factory -> factory.addServerCustomizers((httpServer) -> {
            log.info("Enable custom AccessLog for management server on bind: {}", httpServer.configuration().bindAddress().get());
            return httpServer.accessLog(true, CustomAccessLog::createExtLog);
        });
    }
}

However this also just configures the primary server, as shown in the logging output:

2025-01-21 14:52:49:281  INFO restartedMain d.n.a.w.c.DefaultServerConfig:? - Enable custom AccessLog for default server on bind: 0.0.0.0/0.0.0.0:8080
2025-01-21 14:52:49:283  INFO restartedMain d.n.a.w.c.ManagementServerConfig:? - Enable custom AccessLog for management server on bind: 0.0.0.0/0.0.0.0:8080

My configuration is as simple as

server.port=8080
management.server.port=9000