Deploy docker image from Nexus registry - kubernetes

Question

I have this Jenkinsfile which I want to use to build a pipeline:
pipeline {
agent any
environment {
NEXUS_VERSION = "nexus3"
NEXUS_PROTOCOL = "http"
NEXUS_URL = "you-ip-addr-here:8081"
NEXUS_REPOSITORY = "maven-nexus-repo"
NEXUS_CREDENTIAL_ID = "nexus-user-credentials"
}
stages {
stage('Download Helm Charts') {
steps {
sh "echo 'Downloading Helm Charts from Bitbucket repository...'"
// configure credentials under http://192.168.1.28:8080/user/test/credentials/ and put credentials ID
// not sure do I need to point the root folder of the Helm repository or only the single chart
checkout scmGit(
branches: [[name: 'master']],
userRemoteConfigs: [[credentialsId: 'c2672602-dfd5-4158-977c-5009065c867e',
url: 'http://192.168.1.30:7990/scm/jen/helm.git']])
}
}
stage('Test Kubernetes version') {
steps {
sh "echo 'Checking Kubernetes version..'"
// How to do remote test of kubernetes version
}
}
stage('Push Helm Charts to Kubernetes') {
steps {
sh "echo 'building..'"
// push here helm chart from Jenkins server to Kubernetes cluster
}
}
stage('Build Image') {
steps {
sh "echo 'building..'"
// configure credentials under http://192.168.1.28:8080/user/test/credentials/ and put credentials ID
git credentialsId: 'bitbucket-server:50001e738fa6dafbbe7e336853ced1fcbc284fb18ea8cda8b54dbfa3a7bc87b9', url: 'http://192.168.1.30:7990/scm/jen/spring-boot-microservice.git', branch: 'master'
// execute Java -jar ... and build docker image
./gradlew build && java -jar build/libs/gs-spring-boot-docker-0.1.0.jar
docker build -t springio/gs-spring-boot-docker .
}
}
stage('Push Image into Nexus registry') {
steps {
sh "echo 'building..'"
// push compiled docker image into Nexus repository
script {
pom = readMavenPom file: "pom.xml";
filesByGlob = findFiles(glob: "target/*.${pom.packaging}");
echo "${filesByGlob[0].name} ${filesByGlob[0].path} ${filesByGlob[0].directory} ${filesByGlob[0].length} ${filesByGlob[0].lastModified}"
artifactPath = filesByGlob[0].path;
artifactExists = fileExists artifactPath;
if(artifactExists) {
echo "*** File: ${artifactPath}, group: ${pom.groupId}, packaging: ${pom.packaging}, version ${pom.version}";
nexusArtifactUploader(
nexusVersion: NEXUS_VERSION,
protocol: NEXUS_PROTOCOL,
nexusUrl: NEXUS_URL,
groupId: pom.groupId,
version: pom.version,
repository: NEXUS_REPOSITORY,
credentialsId: NEXUS_CREDENTIAL_ID,
artifacts: [
[artifactId: pom.artifactId,
classifier: '',
file: artifactPath,
type: pom.packaging],
[artifactId: pom.artifactId,
classifier: '',
file: "pom.xml",
type: "pom"]
]
);
} else {
error "*** File: ${artifactPath}, could not be found";
}
}
}
}
stage('Deploy Image from Nexus registry into Kubernetes') {
steps {
sh "echo 'building..'"
}
}
stage('Test'){
steps {
sh "echo 'Testing...'"
// implement a check here is it deployed sucessfully
}
}
}
}
How I can deploy the docker image build by Jenkins server and pushed in Nexus repository? If possible I want to use service account with token?

Answer 1

Instead of using 'nexusArtifactUploader', why don´t you use docker push, like you do to build the image?
I guess nexusArtifactUploader uses Nexus API and doesn´t work with docker images, but you can access the registry using docker and the exposed port (defaults to 5000)
withCredentials([string(credentialsId: NEXUS_CREDENTIAL_ID, variable: 'registryToken')]) {
sh 'docker push --creds default:${registryToken} your-registry-url/image-name:image-tag'
}
You may also change docker build command to build the image using your registry name (or tag it after building, see How to push a docker image to a private repository)