Notes of programmer

Pertama kita buat dulu project springboot menggunakan starter project

Create project

starter template project

properties;

Project: Maven Project
Language: Java
Spring Boot: 2.1.6 pilih yang paling baru aja.
Project Metadata:
- Group: com.maryanto.dimas.example
- Artifact: springboot2-k8s-minikube-example
Dependencies:
- Spring Boot Web Starter
- Lombok
- Spring Boot Actuator
- Spring Boot DevTools

Setup maven repository

Sebelum menggunakan plugin tersebut kita harus update dlu authentication di maven local kita dengan mengedit / membuat file jika belum ada settings.xml di dalem folder $HOME/.m2 seperti berikut:

<?xml version="1.0" encoding="UTF-8"?>
<settings>
    <servers>
        <server>
            <id>repository.dimas-maryanto.com</id>
            <!-- username & password pada nexus oss kalian -->
            <username>cred-username</username>
            <password>cred-password</password>
        </server>
    </servers>
</settings>

Install plugin

Untuk menggunakan maven plugin docker-maven-plugin kita modif file pom.xml seperti berikut:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <!-- metadata maven project goes here!-->

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <!-- docker registry properties -->
        <docker-registry.group>tabeldata</docker-registry.group>
        <docker-registry.host.push>repository.dimas-maryanto.com:8087</docker-registry.host.push>
        <docker-registry.host.pull>repository.dimas-maryanto.com:8086</docker-registry.host.pull>
        <!-- jar file name  -->
        <finalName>${project.artifactId}-${project.version}</finalName>
    </properties>

    <!-- repository maven pull -->
    <repositories>
        <repository>
            <id>repository.dimas-maryanto.com</id>
            <url>http://repository.dimas-maryanto.com:8081/repository/maven-public/</url>
        </repository>
    </repositories>

    <!-- repository maven publish -->
    <distributionManagement>
        <repository>
            <id>repository.dimas-maryanto.com</id>
            <url>http://repository.dimas-maryanto.com:8081/repository/maven-releases/</url>
        </repository>
        <snapshotRepository>
            <id>repository.dimas-maryanto.com</id>
            <url>http://repository.dimas-maryanto.com:8081/repository/maven-snapshots/</url>
        </snapshotRepository>
    </distributionManagement>

    <!-- dependencies goes here -->
    <dependencies>
    <!-- dependency as springboot, jdbc, etc -->
    </dependencies>

    <build>
        <finalName>${finalName}</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <!-- run springboot as service on linux -->
                <configuration>
                    <executable>true</executable>
                </configuration>
            </plugin>
            <!-- maven versioning plugin -->
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>versions-maven-plugin</artifactId>
            </plugin>
            <!-- maven jdk 1.8 as defautl compiler -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <target>8</target>
                    <source>8</source>
                </configuration>
            </plugin>
            <!-- docker maven plugin for build image docker from maven command line -->
            <plugin>
                <groupId>com.spotify</groupId>
                <artifactId>docker-maven-plugin</artifactId>
                <version>1.1.1</version>
                <executions>
                    <!-- build image on mvn package command executed -->
                    <execution>
                        <id>build-image</id>
                        <phase>install</phase>
                        <goals>
                            <goal>build</goal>
                        </goals>
                    </execution>
                    <!-- create tag on mvn deploy command executed  -->
                    <execution>
                        <id>tag-image</id>
                        <phase>deploy</phase>
                        <goals>
                            <goal>tag</goal>
                        </goals>
                        <configuration>
                            <forceTags>true</forceTags>
                            <image>${project.artifactId}:${project.version}</image>
                            <newName>
                                ${docker-registry.host.push}/${docker-registry.group}/${project.artifactId}:${project.version}
                            </newName>
                        </configuration>
                    </execution>
                    <!-- publish to private repository on mvn deploy command executed -->
                    <execution>
                        <id>push-image</id>
                        <phase>deploy</phase>
                        <goals>
                            <goal>push</goal>
                        </goals>
                        <configuration>
                            <retryPushCount>2</retryPushCount>
                            <imageName>
                                ${docker-registry.host.push}/${docker-registry.group}/${project.artifactId}:${project.version}
                            </imageName>
                        </configuration>
                    </execution>
                </executions>
                <configuration>
                    <baseImage>${docker-registry.host.pull}/openjdk:8-alpine</baseImage>
                    <imageName>${project.artifactId}:${project.version}</imageName>
                    <resources>
                    <!-- copy jar file after build to docker image -->
                        <resource>
                            <targetPath>/var/applications</targetPath>
                            <directory>${project.build.directory}</directory>
                            <includes>
                                <include>${project.build.finalName}.jar</include>
                            </includes>
                        </resource>
                    </resources>
                    <exposes>
                        <expose>8080</expose>
                    </exposes>
                    <runs>
                    <!-- execute jar on container location -->
                        <run>
                            ln -s /var/applications/${project.build.finalName}.jar /var/applications/application.jar
                        </run>
                    </runs>
                    <maintainer>Dimas Maryanto (software.dimas_m@icloud.com)</maintainer>
                    <imageTags>
                        <imageTag>${project.version}</imageTag>
                    </imageTags>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

Build image

Sebelum kita execute command docker maven plugin kita harus login dulu ke private registry kita dengan menggunakan perintah:

# url: nexus-host:nexus-port example
docker login repository.dimas-maryanto:8087 # for pushing repository

Setelah berhasil login, kita baru jalankan perintah maven berikut:

mvn clean install

Berikut outputnya:

[INFO] --- maven-jar-plugin:3.1.2:jar (default-jar) @ springboot2-k8s-minikube-example ---
[INFO] Building jar: /Users/dimasm93/Workspaces/examples/springboot2-k8s-minikube/target/springboot2-k8s-minikube-example-0.0.1-SNAPSHOT.jar
[INFO] 
[INFO] --- spring-boot-maven-plugin:2.1.6.RELEASE:repackage (repackage) @ springboot2-k8s-minikube-example ---
[INFO] Replacing main artifact with repackaged archive
[INFO] 
[INFO] --- maven-dependency-plugin:3.1.1:unpack (unpack) @ springboot2-k8s-minikube-example ---
[INFO] Configured Artifact: com.maryanto.dimas.example:springboot2-k8s-minikube-example:0.0.1-SNAPSHOT:jar
[INFO] Unpacking /Users/dimasm93/Workspaces/examples/springboot2-k8s-minikube/target/springboot2-k8s-minikube-example-0.0.1-SNAPSHOT.jar to /Users/dimasm93/Workspaces/examples/springboot2-k8s-minikube/target/dependency with includes "" and excludes ""
[INFO] 
[INFO] --- maven-install-plugin:2.5.2:install (default-install) @ springboot2-k8s-minikube-example ---
[INFO] Installing /Users/dimasm93/Workspaces/examples/springboot2-k8s-minikube/target/springboot2-k8s-minikube-example-0.0.1-SNAPSHOT.jar to /Users/dimasm93/.m2/repository/com/maryanto/dimas/example/springboot2-k8s-minikube-example/0.0.1-SNAPSHOT/springboot2-k8s-minikube-example-0.0.1-SNAPSHOT.jar
[INFO] Installing /Users/dimasm93/Workspaces/examples/springboot2-k8s-minikube/pom.xml to /Users/dimasm93/.m2/repository/com/maryanto/dimas/example/springboot2-k8s-minikube-example/0.0.1-SNAPSHOT/springboot2-k8s-minikube-example-0.0.1-SNAPSHOT.pom
[INFO] 
[INFO] --- docker-maven-plugin:1.1.1:build (build-image) @ springboot2-k8s-minikube-example ---
[INFO] Using authentication suppliers: [ConfigFileRegistryAuthSupplier]
[INFO] Copying /Users/dimasm93/Workspaces/examples/springboot2-k8s-minikube/target/springboot2-k8s-minikube-example-0.0.1-SNAPSHOT.jar -> /Users/dimasm93/Workspaces/examples/springboot2-k8s-minikube/target/docker/var/applications/springboot2-k8s-minikube-example-0.0.1-SNAPSHOT.jar
[INFO] Building image springboot2-k8s-minikube-example:0.0.1-SNAPSHOT
Step 1/5 : FROM repository.dimas-maryanto.com:8086/openjdk:8-alpine

Pulling from openjdk
Digest: sha256:44b3cea369c947527e266275cee85c71a81f20fc5076f6ebb5a13f19015dce71
Status: Downloaded newer image for repository.dimas-maryanto.com:8086/openjdk:8-alpine
 ---> a3562aa0b991
Step 2/5 : MAINTAINER Dimas Maryanto (software.dimas_m@icloud.com)

 ---> Running in 7571ffbcd479
Removing intermediate container 7571ffbcd479
 ---> 0dfe9332cde4
Step 3/5 : ADD /var/applications/springboot2-k8s-minikube-example-0.0.1-SNAPSHOT.jar /var/applications/

 ---> edbe8a6ac6af
Step 4/5 : RUN ln -s /var/applications/springboot2-k8s-minikube-example-0.0.1-SNAPSHOT.jar /var/applications/application.jar

 ---> Running in 0af3f39022e4
Removing intermediate container 0af3f39022e4
 ---> 8ae9302775c2
Step 5/5 : EXPOSE 8080

 ---> Running in e9cf8bc2716b
Removing intermediate container e9cf8bc2716b
 ---> a70cd052c197
ProgressMessage{id=null, status=null, stream=null, error=null, progress=null, progressDetail=null}
Successfully built a70cd052c197
Successfully tagged springboot2-k8s-minikube-example:0.0.1-SNAPSHOT
[INFO] Built springboot2-k8s-minikube-example:0.0.1-SNAPSHOT
[INFO] Tagging springboot2-k8s-minikube-example:0.0.1-SNAPSHOT with 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  22.277 s
[INFO] Finished at: 2019-07-18T14:07:20+07:00
[INFO] ------------------------------------------------------------------------

Nah setelah kita build kita check docker image di docker:

docker images

Berikut outputnya:

REPOSITORY                                      TAG                 IMAGE ID            CREATED              SIZE
springboot2-k8s-minikube-example                0.0.1-SNAPSHOT      a70cd052c197        About a minute ago   125MB
repository.dimas-maryanto.com:8086/openjdk      8-alpine            a3562aa0b991        2 months ago         105MB

Nah ini berati docker image udah terbuild dan di save ke local repository kita,

Publish docker image

nah sekarang kata push ke docker registry kita dengan menggunakan maven command deploy:

mvn clean deploy

Berikut outputnya:

Successfully tagged springboot2-k8s-minikube-example:0.0.1-release
[INFO] Built springboot2-k8s-minikube-example:0.0.1-release
[INFO] Tagging springboot2-k8s-minikube-example:0.0.1-release with 0.0.1-release
[INFO] 
[INFO] --- maven-deploy-plugin:2.8.2:deploy (default-deploy) @ springboot2-k8s-minikube-example ---
Uploading: http://repository.dimas-maryanto.com:8081/repository/maven-releases/com/maryanto/dimas/example/springboot2-k8s-minikube-example/0.0.1-release/springboot2-k8s-minikube-example-0.0.1-release.jar
Uploaded: http://repository.dimas-maryanto.com:8081/repository/maven-releases/com/maryanto/dimas/example/springboot2-k8s-minikube-example/0.0.1-release/springboot2-k8s-minikube-example-0.0.1-release.jar (19581 KB at 42108.4 KB/sec)
Uploading: http://repository.dimas-maryanto.com:8081/repository/maven-releases/com/maryanto/dimas/example/springboot2-k8s-minikube-example/0.0.1-release/springboot2-k8s-minikube-example-0.0.1-release.pom
Uploaded: http://repository.dimas-maryanto.com:8081/repository/maven-releases/com/maryanto/dimas/example/springboot2-k8s-minikube-example/0.0.1-release/springboot2-k8s-minikube-example-0.0.1-release.pom (9 KB at 158.5 KB/sec)
Downloading: http://repository.dimas-maryanto.com:8081/repository/maven-releases/com/maryanto/dimas/example/springboot2-k8s-minikube-example/maven-metadata.xml
Uploading: http://repository.dimas-maryanto.com:8081/repository/maven-releases/com/maryanto/dimas/example/springboot2-k8s-minikube-example/maven-metadata.xml
Uploaded: http://repository.dimas-maryanto.com:8081/repository/maven-releases/com/maryanto/dimas/example/springboot2-k8s-minikube-example/maven-metadata.xml (354 B at 12.8 KB/sec)
[INFO] 
[INFO] --- docker-maven-plugin:1.1.1:tag (tag-image) @ springboot2-k8s-minikube-example ---
[INFO] Using authentication suppliers: [ConfigFileRegistryAuthSupplier]
[INFO] Creating tag repository.dimas-maryanto.com:8087/tabeldata/springboot2-k8s-minikube-example:0.0.1-release from springboot2-k8s-minikube-example:0.0.1-release
[INFO] 
[INFO] --- docker-maven-plugin:1.1.1:push (push-image) @ springboot2-k8s-minikube-example ---
[INFO] Using authentication suppliers: [ConfigFileRegistryAuthSupplier]
[INFO] Pushing repository.dimas-maryanto.com:8087/tabeldata/springboot2-k8s-minikube-example:0.0.1-release
The push refers to repository [repository.dimas-maryanto.com:8087/tabeldata/springboot2-k8s-minikube-example]
b41ebae5010d: Pushed 
79126c4885f0: Pushed 
ceaf9e1ebef5: Layer already exists 
9b9b7f3d56a0: Layer already exists 
f1b5933fe4b5: Layer already exists 
0.0.1-release: digest: sha256:6aee3eae790f12ede14ea505c5c3e8cca3e933e5c6c9ac16849c64d47d754323 size: 1366
null: null 
[INFO] Pushing repository.dimas-maryanto.com:8087/tabeldata/springboot2-k8s-minikube-example:0.0.1-release
The push refers to repository [repository.dimas-maryanto.com:8087/tabeldata/springboot2-k8s-minikube-example]
b41ebae5010d: Layer already exists 
79126c4885f0: Layer already exists 
ceaf9e1ebef5: Layer already exists 
9b9b7f3d56a0: Layer already exists 
f1b5933fe4b5: Layer already exists 
0.0.1-release: digest: sha256:6aee3eae790f12ede14ea505c5c3e8cca3e933e5c6c9ac16849c64d47d754323 size: 1366
null: null 
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 14.958s
[INFO] Finished at: Thu Jul 18 14:56:06 WIB 2019
[INFO] Final Memory: 58M/619M
[INFO] ------------------------------------------------------------------------

Nah sekarang tinggal kita check aja di docker hosted repository nexus seperti berikut:

springboot stored on nexus oss

Publish SpringBoot as Docker Image using maven plugin

Create project

Setup maven repository

Install plugin

Build image

Publish docker image

Referensi

Dimas Maryanto (@dimMaryanto93)

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