问题
I'm trying to install a custom built SCDF2.5.1(To add oracle Driver) into openshift (Followed the Kubectl installation doc for SCDF). I modified the deployment.yaml to pull this custom SCDF docker image of mine from git repo. Now when I start the container I get the below error
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
I saw a thread related to this post where the fix was provided to spring-cloud-dataflow-server-kubernetes and spring-cloud-dataflow-server-kubernetes-autoconfigure project. But I'm not sure whether thsose changes are available for the custom build 2.5.1 Release. Also I checked my deployment.yaml and the toggle "SPRING_CLOUD_DATAFLOW_FEATURES_SCHEDULES_ENABLED" was set to true.
In deployment.yaml I have removed database service & config, removed the scdf-server config as well, as I added the driver properties in application.properties while building the docker image itself. Below are the deployment.yaml and application.properties file which built into the scdf jar. FYI, removing the scdf-server config from deployment.yaml has no effect on the the failure. The above exception remains same. Also removed the skipper 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 - Which will be built as customscdf-image used above
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"]
So what am I doing wrong or missing here? Please advice.
Thanks in advance.
回答1:
Most likely you are missing task platform configuration server-config.yaml which is part of a k8s deployment files. As you're using your own application.properties file I have a feeling you didn't use that k8s config file.
回答2:
This custom build doesn't read the server-config.yaml for some reason. Even if its shown in the server-deployment.yaml as one of the config-maps. So I moved the kubenetes task platform properties to application.properties of the CustomBuild SCDF Spring boot project. So the docker image I built from this project the kubernetes properties as well. After adding this the server-deployment.yaml able to get the k8 platform properties and SCDF started running successfully.
My application.properties currently looks like below.
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
I think only the custom built application will face this issue. But this needs more clarity.
来源：https://stackoverflow.com/questions/62031021/how-to-resolve-unsatisfied-dependency-expressed-through-field-schedulerservice