自定义数据流应用卡在部署状态

问题描述

我为Spring Cloud Dataflow创建了一个自定义s3-sink应用程序,但在流部署期间,该应用程序保持deploying状态。我同时包含了网络和人工依赖,但我仍然面临着同样的问题。我认为该应用程序本身正在运行,因为它向s3-bucket添加了数据,但是一段时间后,该应用程序将显示Failed状态,并且收到以下警告。

  Warning  Unhealthy  3m54s (x4 over 7m54s)  kubelet,ip-x-x-x-x.ec2.internal  Liveness probe Failed: HTTP probe Failed with statuscode: 404
  Warning  Unhealthy  3m45s (x15 over 8m4s)  kubelet,ip-x-x-x-x.ec2.internal  Readiness probe Failed: HTTP probe Failed with statuscode: 404

我正在将该应用程序部署为Kubernetes环境中Maven项目的dockerized映像。这是我的自定义应用程序代码

@SpringBootApplication
@EnableBinding(Processor.class)
@EnableConfigurationProperties(Properties.class)
public class SpringCloudCustomApp {
    
        @Autowired
        private Properties AWSProperties;
        
        @ServiceActivator(inputChannel = Processor.INPUT)
        public void handleMessage(String msg) throws InterruptedException {

                
                Regions clientRegion = Regions.US_EAST_1;
                
                //Todo: add batch size to config

                //Generate Unique ID
                String uuid = (UUID.randomUUID().toString());
                //Add Unique ID prefix to file name
                String outName = uuid + "-" + AWSProperties.getFileObjKeyName();

                try {

                    //Generate AWS Credentials using Properties class
                    BasicAWSCredentials awsCreds = new BasicAWSCredentials(AWSProperties.getAccessKey(),AWSProperties.getSecretKey());
                    //Create S3 Client
                    AmazonS3 s3Client = AmazonS3ClientBuilder.standard().withRegion(clientRegion).withCredentials(new AWsstaticCredentialsProvider(awsCreds)).build();
        
                    // Upload a text string as a new object.
                    ObjectMetadata Metadata = new ObjectMetadata();
                    Metadata.setContentType("application/json");
                    InputStream targetStream = new ByteArrayInputStream(msg.getBytes());
                    s3Client.putObject(AWSProperties.getBucketName(),outName,targetStream,Metadata);

                
                } catch (AmazonServiceException e) {
                    // The call was transmitted successfully,but Amazon S3 Couldn't process 
                    // it,so it returned an error response.
                    e.printstacktrace();
                } catch (SdkClientException e) {
                    // Amazon S3 Couldn't be contacted for a response,or the client
                    // Couldn't parse the response from Amazon S3.
                    e.printstacktrace();
                } catch (Exception e)
                {
                    e.printstacktrace();
                }

        }

        public static void main(String[] args) {
            SpringApplication.run(SpringCloudCustomApp.class,args);
        }
            
}

编辑:当我在本地部署maven项目时,该应用程序能够完全部署而没有任何问题,因此我的问题似乎与docker映像或kubernetes环境中的部署有关。

解决方法

您可以检查readinessliveness探测端点是什么。默认情况下,SCDF将Spring Boot执行器端点设置为探针端点。

根据您使用的Spring Boot版本,您将得到以下探针端点:

对于Spring Boot 1.x:

Readiness: /info
Liveness: /health

对于Spring Boot 2.x:

Readiness: /actuator/info
Liveness: /actuator/health

这意味着您需要在应用程序中启用这些管理端点。例如,我需要具有以下属性:

我相信healthinfo端点在Spring Boot 1.x中都是默认启用的(如果情况并非如此,可以启用它们)。

但是,在Spring Boot 2.x中,您需要显式启用它们。因此,您需要这样的东西:

management.endpoints.web.exposure.include=health,info