The expected override in the helm chart of the Docker agent image isn’t working as expected.
I’ve built Jenkins and the jenins-agent Docker images for RISC-V. This allows me to run Jenkins on a 100% RISC-V Kubernetes cluster.
git clone https://github.com/jenkinsci/docker.git
cd docker
git checkout 2.504.3
sudo docker build -f debian/trixie/hotspot/Dockerfile . \
--build-arg JENKINS_VERSION=2.528.3 \
--build-arg WAR_SHA=bfa31f1e3aacebb5bce3d5076c73df97bf0c0567eeb8d8738f54f6bac48abd74 \
--build-arg WAR_URL=https://repo.jenkins-ci.org/public/org/jenkins-ci/main/jenkins-war/2.528.3/jenkins-war-2.528.3.war \
--build-arg COMMIT_SHA=1d22f3716cc2a5baeedeb636a006c4c38d35ce4c \
--build-arg PLUGIN_CLI_VERSION=2.13.2 \
--build-arg TRIXIE_TAG=20251208 \
--build-arg JAVA_VERSION=21.0.9_10 \
--build-arg TARGETARCH=riscv64 \
-t opvolger/jenkins:2.528.3-jdk21 --progress plain
and
git clone https://github.com/jenkinsci/docker-agent.git
cd docker-agent
git checkout 3345.v03dee9b_f88fc-1
sudo docker build -f debian/Dockerfile . \
--build-arg JAVA_VERSION=21.0.9_10 \
-t opvolger/inbound-agent:3345.v03dee9b_f88fc-1 --progress plain
sudo docker push opvolger/inbound-agent:3345.v03dee9b_f88fc-1
and
# kubectl create namespace jenkins
# helm install jenkins jenkins/jenkins -n jenkins --values values.yaml
# helm upgrade jenkins jenkins/jenkins -n jenkins --values values.yaml
# helm uninstall jenkins -n jenkins
global:
domain: k8s.riscv.net
jenkinsUrlProtocol: "http"
agent:
image:
repository: "opvolger/inbound-agent"
tag: "3345.v03dee9b_f88fc-1"
controller:
admin:
username: opvolger
password: demodemo
probes:
startupProbe:
failureThreshold: 20
periodSeconds: 15
timeoutSeconds: 30
livenessProbe:
failureThreshold: 10
initialDelaySeconds: 30
readinessProbe:
failureThreshold: 10
initialDelaySeconds: 30
image:
repository: opvolger/jenkins
sidecars:
configAutoReload:
enabled: false # crashed al the time
image:
repository: opvolger/k8s-sidecar
ingress:
enabled: true
hostName: "{{ .Release.Name }}.{{ .Values.global.domain }}"
However, I’m still running into one issue. I’ve overwritten the Docker images agent.image.repository with my image. I also see this reflected in the default PodTemplate settings for my cluster.
However, when I create a job, it still tries to pull the jenkins/inbound-agent Docker image. This isn’t available for RISC-V.
So, I’ve solved it with a small hack, but I don’t think it’s the prettiest. I’ve also overwritten the image (jnlp) in the pipeline, which works.
// Uses Declarative syntax to run commands inside a container.
pipeline {
agent {
kubernetes {
yaml '''
apiVersion: v1
kind: Pod
spec:
containers:
- name: jnlp
image: opvolger/inbound-agent:3345.v03dee9b_f88fc-1
- name: shell
image: ubuntu
command:
- sleep
args:
- infinity
securityContext:
# ubuntu runs as root by default, it is recommended or even mandatory in some environments (such as pod security admission "restricted") to run as a non-root user.
runAsUser: 1000
'''
defaultContainer 'shell'
retries 2
}
}
stages {
stage('Main') {
steps {
sh 'uname -a'
}
}
}
}
This hack is not what i want. What am I doing wrong? Or is this the desired behavior?
Jenkins setup:
Jenkins: 2.528.3
OS: Linux - 6.12.57+deb13-riscv64
Java: 21.0.9 - Eclipse Adoptium (OpenJDK 64-Bit Server VM)
---
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