Spring Boot Layered Jar with Docker stuck

Camunda 7 Topics Discussion & Questions
1

Hello Camundas,
I’m having a problem getting a very basic Spring boot starter up an running on docker.

I want to deploy a layered jar as a docker container and technically everything works but at startup the container freezes at the following line.

2021-05-24 10:18:53.855 INFO 1 --- [ main] org.camunda.bpm.engine.cfg : ENGINE-12003 Plugin 'CompositeProcessEnginePlugin[genericPropertiesConfiguration, camundaProcessEngineConfiguration, camundaDatasourceConfiguration, camundaJobConfiguration, camundaHistoryConfiguration, camundaMetricsConfiguration, camundaAuthorizationConfiguration, camundaDeploymentConfiguration, CreateAdminUserConfiguration[adminUser=AdminUserProperty[id=admin, firstName=Admin, lastName=Admin, email=admin@localhost, password=******]], failedJobConfiguration, eventPublisherPlugin, SpringBootSpinProcessEnginePlugin]' activated on process engine 'default'

The Pom uses the repackage goal and explicitly enables layers.

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <version>2.4.3</version>
            <!-- this fixes "no main manifest attribute" error and adds default layers -->
            <executions>
                <execution>
                    <goals>
                        <goal>repackage</goal>
                    </goals>
                </execution>
            </executions>
            <configuration>
                <layers>
                    <enabled>true</enabled>
                </layers>
            </configuration>
        </plugin>
    </plugins>
</build>

The created jar file contains the different layers:

java -Djarmode=layertools -jar layered-camunda-docker-1.0.0-SNAPSHOT.jar extract

image
image759×162 9.82 KB

I build and run the images with the following commands:

docker build -f DockerfileLocal_no_layers -t not-layered-camunda-start .
docker run  -p 28003:8080 not-layered-camunda-start

docker build -f DockerfileLocal -t layered-camunda-start .
docker run -p 18003:8080 layered-camunda-start

The not layered camunda image works fine, the layered container fails to start up correctly:

image
image2540×1093 321 KB

The Simple Project is here:
patrickcorbett/layered-camunda-docker (github.com)

On the web I found a similar issue with [multiple database connections]( Spring Boot layered jar with multiple databases gets stuck in docker container – Docker Questions however the starter only has the in Memory H2 DB connection.

Has anyone successfully deployed a layered spring boot camunda?

Thanks in advance!

2

Hello,

I know, this is an old topic, but we have the same problems.

Can someone help us with this issue?

Thank you very much in advanced.

Best regards,

Rainer

3