之前遇到過dubbo提供者用內網地址註冊provider的問題 當時改了host檔案成功了 但是沒有想為什麼會有這個問題

現在使用spring boot admin 來監控spring boot專案出現瞭如下問題， 如果是client和server端 分離，而且不在一臺機器上，client會將主機名作為地址註冊導致註冊失敗

要注意伺服器之間是可以根據各自的主機名來訪問的哦，如果不能訪問也應該可以在hosts裡設定。。

但是現在遇到了windows下spring boot admin的client註冊到linux的server 失敗的問題

下面的圖顯式的是linux的client的註冊，道理一樣。

直接查spring boot admin clientd 的原始碼

/**
 * Scheduler that checks the registration of the application at the spring-boot-admin.
 */
public class SpringBootAdminRegistratorTask implements Runnable {

	private static final Logger LOGGER = LoggerFactory.getLogger(SpringBootAdminRegistratorTask.class);

	@Autowired
	private Environment env;

	@PostConstruct
	public void check() {
		Assert.notNull(env.getProperty("spring.boot.admin.url"),
				"The URL of the spring-boot-admin application is mandatory");
		Assert.notNull(env.getProperty("server.port"), "The server port of the application is mandatory");
		Assert.notNull(env.getProperty("info.id"), "The id of the application is mandatory");
	}

	/**
	 * @see java.lang.Runnable#run()
	 */
	@Override
	public void run() {
		try {
			String id = env.getProperty("info.id");
			int port = env.getProperty("server.port", Integer.class);
			String adminUrl = env.getProperty("spring.boot.admin.url");
			RestTemplate template = new RestTemplate();
			template.getMessageConverters().add(new MappingJackson2HttpMessageConverter());
			ApplicationList list = template.getForObject(adminUrl + "/api/applications", ApplicationList.class);
			for (Application app : list) {
				if (id.equals(app.getId())) {
					// the application is already registered at the admin tool
					LOGGER.debug("Application already registered with ID '{}'", id);
					return;
				}
			}
			// register the application with the used URL and port
			String url = new URL("http", InetAddress.getLocalHost().getCanonicalHostName(), port, "").toString();
			Application app = new Application();
			app.setId(id);
			app.setUrl(url);
			template.postForObject(adminUrl + "/api/applications", app, String.class);
			LOGGER.info("Application registered itself at the admin application with ID '{}' and URL '{}'", id, url);
		} catch (Exception e) {
			LOGGER.warn("Failed to register application at spring-boot-admin, message={}", e.getMessage());
		}
	}

	private static class ApplicationList extends ArrayList<Application> {
		private static final long serialVersionUID = 1L;
	}

}
 

修改hosts檔案沒有用

最後修改登錄檔

PS C:\Users\BAO> hostname
210.82.98.38

OK