【问题标题】:How to resolve Unsatisfied dependency expressed through field 'schedulerService'?如何解决通过字段“schedulerService”表达的不满足的依赖关系?
【发布时间】:2020-09-13 18:43:35
【问题描述】:

我正在尝试将custom built SCDF2.5.1(添加 oracle 驱动程序)安装到 openshift(按照 SCDF 的 Kubectl 安装文档)。我修改了 deployment.yaml 以从 git repo 中提取我的这个自定义 SCDF docker 映像。现在,当我启动容器时,出现以下错误

INFO  org.hibernate.dialect.Dialect.<init> - HHH000400: Using dialect: org.hibernate.dialect.Oracle12cDialect
INFO  org.hibernate.engine.transaction.jta.platform.internal.JtaPlatformInitiator.initiateService - HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]
INFO  org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.buildNativeEntityManagerFactory - Initialized JPA EntityManagerFactory for persistence unit 'default'
INFO  org.springframework.cloud.dataflow.configuration.metadata.ApplicationConfigurationMetadataResolverAutoConfiguration.registryConfigurationMap - Final Registry Configurations: {registry-1.docker.io=RegistryConfiguration{registryHost='registry-1.docker.io', user='null', secret='****'', authorizationType=dockeroauth2, manifestMediaType='application/vnd.docker.distribution.manifest.v2+json', disableSslVerification='false', extra={registryAuthUri=https://auth.docker.io/token?service=registry.docker.io&scope=repository:{repository}:pull&offline_token=1&client_id=shell}}}
WARN  org.springframework.cloud.dataflow.server.config.features.SchedulerConfiguration.primaryTaskPlatform - TaskPlatform Kubernetes is selected as primary but has no TaskLaunchers configured
WARN  org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext.refresh - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.cloud.dataflow.server.config.features.TaskConfiguration': Unsatisfied dependency expressed through field 'schedulerService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'schedulerService' defined in class path resource [org/springframework/cloud/dataflow/server/config/features/SchedulerConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.dataflow.server.service.SchedulerService]: Factory method 'schedulerService' threw exception; nested exception is java.lang.IllegalStateException: No valid primary TaskPlatform configured
INFO  org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.destroy - Closing JPA EntityManagerFactory for persistence unit 'default'
INFO  com.zaxxer.hikari.HikariDataSource.close - HikariPool-1 - Shutdown initiated...
INFO  com.zaxxer.hikari.HikariDataSource.close - HikariPool-1 - Shutdown completed.
INFO  org.apache.catalina.core.StandardService.log - Stopping service [Tomcat]
ERROR 

我看到一个与这篇文章相关的线程,其中fix 被提供给 spring-cloud-dataflow-server-kubernetes 和 spring-cloud-dataflow-server-kubernetes-autoconfigure 项目。但我不确定这些更改是否可用于自定义构建 2.5.1 版本。我还检查了我的 deployment.yaml 并将切换“SPRING_CLOUD_DATAFLOW_FEATURES_SCHEDULES_ENABLED”设置为 true。

在 deployment.yaml 中,我删除了数据库服务和配置,也删除了 scdf-server 配置,因为我在构建 docker 映像本身时在 application.properties 中添加了驱动程序属性。下面是 scdf jar 中内置的 deployment.yaml 和 application.properties 文件。仅供参考,从 deployment.yaml 中删除 scdf-server 配置对失败没有影响。上述异常保持不变。还删除了船长 URI。

deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: customscdf-image
  labels:
    app: customscdf-image
spec:
  selector:
    matchLabels:
      app: customscdf-image
  replicas: 1
  template:
    metadata:
      labels:
        app: customscdf-image
    spec:
      containers:
      - name: customscdf-image
        image: docker-registry.default.svc:5000/scdfadmin/customscdf-image
        imagePullPolicy: Always
        ports:
        - containerPort: 80
        livenessProbe:
          httpGet:
            path: /management/health
            port: 80
          initialDelaySeconds: 45
        readinessProbe:
          httpGet:
            path: /management/info
            port: 80
          initialDelaySeconds: 45
        resources:
          limits:
            cpu: 1.0
            memory: 2048Mi
          requests:
            cpu: 0.5
            memory: 1024Mi
        env:
        - name: KUBERNETES_NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: "metadata.namespace"
        - name: SERVER_PORT
          value: '80'
        - name: SPRING_CLOUD_CONFIG_ENABLED
          value: 'false'
        - name: SPRING_CLOUD_DATAFLOW_FEATURES_ANALYTICS_ENABLED
          value: 'true'
        - name: SPRING_CLOUD_DATAFLOW_FEATURES_SCHEDULES_ENABLED
          value: 'true'
        - name: SPRING_CLOUD_DATAFLOW_TASK_COMPOSED_TASK_RUNNER_URI
          value: 'docker://springcloud/spring-cloud-dataflow-composed-task-runner:2.6.0.BUILD-SNAPSHOT'
        - name: SPRING_CLOUD_KUBERNETES_CONFIG_ENABLE_API
          value: 'false'
        - name: SPRING_CLOUD_KUBERNETES_SECRETS_ENABLE_API
          value: 'false'
        - name: SPRING_CLOUD_KUBERNETES_SECRETS_PATHS
          value: /etc/secrets
        - name: SPRING_CLOUD_DATAFLOW_SERVER_URI
          value: '${HOST_NAME}:9393'
          # Add Maven repo for metadata artifact resolution for all stream apps
        - name: SPRING_APPLICATION_JSON
          value: "{ \"maven\": { \"local-repository\": null, \"remote-repositories\": { \"repo1\": { \"url\": \"https://repo.spring.io/libs-snapshot\"} } } }"
      serviceAccountName: scdf-sa

application.properties

spring.application.name=CUSTOMSCDF
spring.datasource.url=DATASOURCE_URL_FOR_ORACLE_DB
spring.datasource.username=user_name
spring.datasource.password=PASSWORD
spring.datasource.driver-class-name=oracle.jdbc.OracleDriver

spring.flyway.enabled=false

spring.jpa.show-sql=true
spring.jpa.hibernate.use-new-id-generator-mappings=true

logging.level.root=info
logging.file.max-size=5GB
logging.file.max-history=30 
logging.pattern.console=%d{dd-MM-yyyy HH:mm:ss.SSS} [%thread] %-5level %logger.%M - %msg%n

Dockerfile - 将构建为上面使用的 customcdf-image

FROM maven:3.5.2-jdk-8-alpine AS MAVEN_BUILD

COPY pom.xml /build/
COPY src /build/src/

WORKDIR /build/
RUN mvn package

FROM openjdk:8-jre-alpine

WORKDIR /app
COPY --from=MAVEN_BUILD /build/target/custom-0.0.1-SNAPSHOT.jar /app/

ENTRYPOINT ["java", "-jar", "custom-0.0.1-SNAPSHOT.jar"]

那么我在这里做错了什么或错过了什么?请指教。

提前致谢。

【问题讨论】:

  • 您使用的 Oracle 驱动程序可能与我们提供的 Hibernate 版本不兼容。如果你可以分享捆绑 SCDF 自动配置的 Spring Boot 应用,我们可以看看。
  • 嗨 Anandan,我在 Github 上创建了一个 repo。下面是位置。 custom-build:2.5.1+OracleDriver
  • 您应该显示完整的服务器启动日志,因为这可能会说明更多信息。
  • Janne,在 git repo 中添加了完整的日志文件。CustomSCDF_OpenShift.log
  • 您好,我在下面添加了我的答案。如果属性来自服务器配置,为什么您认为它们不会被读取?在尝试将其映射到部署时,我还在 server-config 文件中看到了一些警告。 WARNING:Config map scdf-server contains keys that are not valid environment variable names. Only config map keys with valid names will be added as environment variables. 但我使用了来自 SCDF-core 项目的那个。不过,我无法准确找到这个问题。但是,如果您认为我下面的回答是有效的,请告诉我我可以将其标记为答案并关闭此线程。

标签: java spring-boot kubernetes openshift spring-cloud-dataflow


【解决方案1】:

您很可能缺少任务平台配置server-config.yaml,它是 k8s 部署文件的一部分。当您使用自己的 application.properties 文件时,我感觉您没有使用该 k8s 配置文件。

【讨论】:

  • Janne,我实际上尝试了这两个选项。但似乎没有一个工作。一旦我从部署中添加了 server-config.yaml 并启动了容器,接下来我删除并尝试了。两者产生相同的结果。我还在 git repo 中附加了 server-config.yaml 和 server-deployment.yaml。 server-deployment.yamlserver-config.yaml
【解决方案2】:

由于某种原因,此自定义构建不会读取 server-config.yaml。即使它在 server-deployment.yaml 中显示为配置映射之一。所以我将 kubenetes 任务平台属性移动到 CustomBuild SCDF Spring boot 项目的 application.properties 中。所以我从这个项目构建的 docker 镜像也是 kubernetes 属性。添加后 server-deployment.yaml 能够获取 k8 平台属性并且 SCDF 开始成功运行。

我的 application.properties 目前如下所示。

spring.application.name=CustomSCDF
spring.datasource.url=jdbc:oracle:thin:@datasource_url
spring.datasource.username=username
spring.datasource.password=Password
spring.datasource.driver-class-name=oracle.jdbc.OracleDriver

#properties moved from server-config.yaml
spring.cloud.dataflow.task.platform.kubernetes.accounts.default.image-pull-policy= always
spring.cloud.dataflow.task.platform.kubernetes.accounts.default.entry-point-style= exec
spring.cloud.dataflow.task.platform.kubernetes.accounts.default.limits.cpu=4

我认为只有自定义构建的应用程序会面临这个问题。但这需要更清楚。

【讨论】:

    猜你喜欢
    • 2016-12-21
    • 1970-01-01
    • 1970-01-01
    • 2019-08-14
    • 2019-11-09
    • 2018-11-02
    • 2019-08-03
    • 1970-01-01
    • 1970-01-01
    相关资源
    最近更新 更多