The docker container doesn't working Kubernetes Plugin jenkins

Question

I deployed version 2.319.3 of Jenkins helm but I have an issue stranger with the container docker. My version Kubernetes: 1.22.6 (aks).

ERROR:

docker build -t registry.azurecr.io/test:develop-v81. Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

Test another docker command:

• docker info Client: Context: default Debug Mode: false

Server: ERROR: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running? errors pretty printing info

My agents pods config:

apiVersion: "v1" kind: "Pod" metadata: labels: jenkins/jenkins-jenkins-agent: "true" jenkins/label-digest: "500b4f18aee87616849e4f4c2435020898e34aa0" jenkins/label: "jenkins-jenkins-agent" name: "default-gvzg5" spec: containers:

• args:
  • "********"
  • "default-gvzg5" env:
  • name: "JENKINS_SECRET" value: "********"
  • name: "JENKINS_TUNNEL" value: "jenkins-agent.whitelabel.svc.cluster.local:50000"
  • name: "JENKINS_AGENT_NAME" value: "default-gvzg5"
  • name: "JENKINS_NAME" value: "default-gvzg5"
  • name: "JENKINS_AGENT_WORKDIR" value: "/home/jenkins/agent"
  • name: "JENKINS_URL" value: "http://jenkins.whitelabel.svc.cluster.local:8080/jenkins" image: "jenkins/inbound-agent:4.11.2-4" imagePullPolicy: "IfNotPresent" name: "jnlp" resources: limits: {} requests: {} tty: true volumeMounts:
  • mountPath: "/var/run/docker.sock" name: "volume-0" readOnly: false
  • mountPath: "/home/jenkins/agent" name: "workspace-volume" readOnly: false workingDir: "/home/jenkins/agent"
• args:
  • "9999999" command:
  • "sleep" image: "docker:20.10" imagePullPolicy: "IfNotPresent" name: "docker2" resources: limits: {} requests: {} securityContext: privileged: true tty: true volumeMounts:
  • mountPath: "/var/run/docker.sock" name: "volume-0" readOnly: false
  • mountPath: "/home/jenkins/agent" name: "workspace-volume" readOnly: false workingDir: "/home/jenkins/agent" hostNetwork: false nodeSelector: kubernetes.io/os: "linux" restartPolicy: "Never" serviceAccountName: "default" volumes:
• hostPath: path: "/var/run/docker.sock" name: "volume-0"
• emptyDir: medium: "" name: "workspace-volume"

The docker container should be working. This is working with the old version of jenkins 2.277.1.

Answer 1

The problem is caused for the Kubernetes version. You can't execute Daemon docker /var/run/docker.sock with privileges. You can try to fix this with Kaniko Container or use a Virtual Machine with docker and privileges. Thank you.