在@preDestory方法中调用Rest API并在Spring boot应用程序中遇到unknownHostExeception问题

Question

我正在使用 RestTeplate.postForEntity(); 调用 API在@preDestroy注释的方法中。将其部署为 AWS EKS 并使用 kubectl 命令缩小 pod，并且调用 @preDestroy 方法，但 RestTeplate.postForEntity() 调用由于unknownhostException而失败

错误日志：
测试 API 调用失败 org.springframework.web.client.ResourceAccessException：“https://test.com/v2/testprocess/test”的 POST 请求出现 I/O 错误：test.com；嵌套异常是 java.net.UnknownHostException: test.com|在 org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:742)|在 org.springframework.web.client.RestTemplate.execute(RestTemplate.java:689)|在 org.springframework.web.client.RestTemplate.postForEntity(RestTemplate.java:452)|在 com.test.TestClient.testAPI(c.java:226)|在 com.test.TestClient.testAPI(TestClient.java:52)|引起：java.net.UnknownHostException: test.com|在 java.net.InetAddress.getAllByName0（来源未知）|在 java.net.InetAddress.getAllByName（来源未知）|在 java.net.InetAddress.getAllByName（来源未知）|在 org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:45)|在 org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:112)|在 org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:374)|在 org.apache.http.impl.execchain.MainClientExec.builtRoute(MainClientExec.java:393)|在 org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236)|在 org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186)|在 org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)|在 org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)|在 org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)|在 org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)|在 org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56)|在 org.springframework.http.client.HttpComponentsClientHttpRequest.executeInternal(HttpComponentsClientHttpRequest.java:87)|在 org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48)|在 org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:53)|在 org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:733)| ... 4 更多

@mozello - thanks for responding, In my app I call the API in two aspect, 1. During the App startup for this i'm using @postConstuctor annotated method and API is call is happening perfectly fine. which means the k8's able to resolve the "test.com" right. But getting this unknownHostException issue only during the @preDestroy method execution, pls suggest.