17. Continuous Integration and container management

Docker version 19.03.2

CentOS7.6.1810

IntelliJ IDEA 2019.2

Learning Objectives:
master DockerMaven use plug-ins
to master continuous integration tools Jenkins installation and use of
master container management tools Rancher installation and use of
 

1 DockerMaven plug

For a large number of micro-services, the actual development of the method used in the enterprise is using DockerMaven plug-ins automatically deploy.
Implement automatic deployment maven plugin, you need to modify the configuration file Docker, the introduction of plug-in pom.xml, and finally uploaded by cmd command line image.

Maven plug-in automatic deployment steps:

( 1 ) modify the host docker configuration, remote access allowed

Docker backup configuration files

cp /lib/systemd/system/docker.service /lib/systemd/system/docker.service.bak

Docker edit the configuration file

we /lib/systemd/system/docker.service

 

Modify daemon.json

we /etc/docker/daemon.json

Add pair

"hosts": ["0.0.0.0:2375","unix:///var/run/docker.sock"]

 

( 2 ) refresh configuration, restart the service

systemctl daemon‐reload
systemctl restart docker

docker start registry

 

( 3 ) in the project pom.xml increase in plug-in configuration

    <build>
        <finalName>app</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring‐boot‐maven‐plugin</artifactId>
            </plugin>

            <plugin>
                <groupId>com.spotify</groupId>
                <artifactId>docker‐maven‐plugin</artifactId>
                <version>0.4.13</version>
                <configuration>
                    <imageName>192.168.184.141:5000/${project.artifactId}:${project.version}
                    </imageName>
                    <baseImage>jdk1.8</baseImage>
                    <entryPoint>["java", "‐jar",
                        "/${project.build.finalName}.jar"]</entryPoint>
                    <resources>
                        <resource>
                            <targetPath>/</targetPath>
                            <directory>${project.build.directory}
                            </directory>
                            <include>${project.build.finalName}.jar</include>
                        </resource>
                    </resources>
                    <dockerHost>http://192.168.184.141:2375</dockerHost>
                </configuration>
            </plugin>
        </plugins>
    </build>

The above configuration will automatically generate Dockerfile

FROM jdk1.8
ADD app.jar /
ENTRYPOINT ["java","‐jar","/app.jar"]

 

( 4 ) in the windows at the command prompt, enter the engineering tensquare_parent directory is located

mvn install

Enter tensquare_base directory is located, it enters the following command to package and upload image

mvn docker:build ‐DpushImage

 

(5 ) into the host , to view mirror

docker images

 

Browser access http://192.168.184.141:5000/v2/_catalog , output

 

 ( 6 ) start the container:

docker run ‐di ‐‐name=base ‐p 9001:9001
192.168.184.141:5000/tensquare_base:1.0‐SNAPSHOT

 

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