如何在centos7主机上使用docker-compose .yml将JBoss服务器容器与SQL服务器链接？

Question

my host (well in reality virtual machine but never mind) is with Centos 7 I have installed Docker and all its related software, I have pulled and configured (with jboss server) a Centos 7 container, then I have pulled and configured a SQL server 2017 image (linux), I have attached a volume to make databases permanent and finally I have configured a Dockerfile to launch these images at the same time and linked with a network (name "testing"), I have put an application to deploy on the JBoss server and modified the standalone.xml to read the database "Simulation_Test" from the SQL server, here are the standlone.xml (the datasources section)

<datasources>
                <datasource jta="true" jndi-name="java:/jboss/datasources/simulation_star1" pool-name="simulation_star1" enabled="true" use-ccm="false">
                    <connection-url>jdbc:sqlserver://172.22.0.2:1433;databaseName=Simulation_Test</connection-url>
                    <driver>sqlserver</driver>
                    <security>
                        <user-name>SA</user-name>
                        <password>catycaty07X</password>
                    </security>
                    <validation>
                        <validate-on-match>false</validate-on-match>
                        <background-validation>false</background-validation>
                        <background-validation-millis>1</background-validation-millis>
                    </validation>
                    <statement>
                        <prepared-statement-cache-size>0</prepared-statement-cache-size>
                        <share-prepared-statements>false</share-prepared-statements>
                    </statement>
                </datasource>

the Docker-compose yml

version: "3.0"
services:
  webapp1:
    ports:
            - '8080:8080'
            - '9990:9990'
    networks:
            - 'testing'
    links:
            - db1
    image: centoswithjbossconfigured2
  db1:
        environment:
            - 'ACCEPT_EULA: Y'
            - 'MSSQL_SA_PASSWORD: catycaty07X'
            - 'MSSQL_PID: Developer'
        ports:
            - '1433:1433'
        volumes:
            - 'my_volume3:/var/opt/mssql/data'
        image: mcr.microsoft.com/mssql/server:2017-latest
volumes:
    my_volume3:
networks:
  testing:

and finally the output of the server (Jboss one) when connecting with the deployed application (the error, because the whole output is very long)

webapp1_1  | 09:46:23,353 ERROR [org.jboss.as.ejb3.invocation] (http-/0.0.0.0:8080-6) JBAS014134: EJB Invocation failed on component ConnexionService for method public abstract com.star.simulation.dto.AgenceDTO com.star.simulation.service.IConnexionService.connexion(java.lang.String,java.lang.String): javax.ejb.EJBTransactionRolledbackException: org.hibernate.exception.GenericJDBCException: Could not open connection

Answer 1

The two containers aren't on the same Docker network. webapp1 is on the locally-created testing network; db1 is on the per-stack network Docker Compose creates for you.

I would remove all of the networks: and links: settings from the docker-compose.yml entirely. Docker Compose will create a network for you and attach all of its containers to that network, and the names webapp1 and db1 will be usable as host names. Once you restart the stack, the fixed IP address you've hard-coded will be wrong. If you can change it to an environment variable reference that's better, but the host name db1 should work to reach the database.