Kubernetes deploy failed jenkins deployment "failed to create containerd task" - docker

Question

While deploying jenkins pod in our kubernetes cluster, kubernetes return the following error:
Error: failed to create containerd task: OCI runtime create failed: container_linux.go:346: starting container process caused "process_linux.go:449: container init caused \"rootfs_linux.go:58: mounting \\\"/var/run/docker.sock\\\" to rootfs \\\"/run/containerd/io.containerd.runtime.v1.linux/k8s.io/jenkins/rootfs\\\" at \\\"/run/containerd/io.containerd.runtime.v1.linux/k8s.io/jenkins/rootfs/run\\\" caused \\\"not a directory\\\"\"": unknown Back-off restarting failed container
My Deployment yaml file:
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: jenkins
spec:
replicas: 1
template:
metadata:
labels:
app: jenkins
spec:
imagePullSecrets:
- name: my-secret-key
containers:
- name: jenkins
image: image-repo-url
env:
- name: JAVA_OPTS
value: -Djenkins.install.runSetupWizard=false
ports:
- name: http-port
containerPort: 8080
- name: jnlp-port
containerPort: 50000
volumeMounts:
- name: jenkins-home
mountPath: /var/jenkins_home
- name: docker-sock
mountPath: /var/run/
- name: docker-storage
mountPath: /var/lib/docker
securityContext:
privileged: true
volumes:
- name: jenkins-home
emptyDir: {}
- name: docker-sock
hostPath:
path: /var/run/docker.sock
- name: docker-storage
emptyDir: {}
I tried for docker-sock volume:
- name: docker-sock
hostPath:
path: /var/run/docker.sock
type: file
--- and ---
- name: docker-sock
hostPath:
path: /var/run/docker.sock
type: Socket
But it doesn't work. Actually, this configuration was working. But ıt doesn't work right now.
I tried for volume mounts:
volumeMounts:
- name: jenkins-home
mountPath: /var/jenkins_home
- name: docker-sock
mountPath: /var/run/docker.sock
Deployment created. But Docker couldn't work.
We are using IBM Cloud Kubernetes Service.
Cluster Version:
1.15.11_1533
Kubernetes Api Version:
admissionregistration.k8s.io/v1beta1
apiextensions.k8s.io/v1beta1
apiregistration.k8s.io/v1
apiregistration.k8s.io/v1beta1
apps/v1
apps/v1beta1
apps/v1beta2
authentication.k8s.io/v1
authentication.k8s.io/v1beta1
authorization.k8s.io/v1
authorization.k8s.io/v1beta1
autoscaling/v1
autoscaling/v2beta1
autoscaling/v2beta2
batch/v1
batch/v1beta1
batch/v2alpha1
certificates.k8s.io/v1beta1
coordination.k8s.io/v1
coordination.k8s.io/v1beta1
events.k8s.io/v1beta1
extensions/v1beta1
metrics.k8s.io/v1beta1
networking.k8s.io/v1
networking.k8s.io/v1beta1
policy/v1beta1
rbac.authorization.k8s.io/v1
rbac.authorization.k8s.io/v1beta1
scheduling.k8s.io/v1
scheduling.k8s.io/v1beta1
storage.k8s.io/v1
storage.k8s.io/v1beta1
v1
Kubernetes version:
Client Version: version.Info{Major:"1", Minor:"15", GitVersion:"v1.15.5", GitCommit:"20c265fef0741dd71a66480e35bd69f18351daea", GitTreeState:"clean", BuildDate:"2019-10-15T19:16:51Z", GoVersion:"go1.12.10", Compiler:"gc", Platform:"darwin/amd64"}
Server Version: version.Info{Major:"1", Minor:"15", GitVersion:"v1.15.11+IKS", GitCommit:"0562ba8a2dfdd05f7f8721ab4952c02fe1605860", GitTreeState:"clean", BuildDate:"2020-03-13T14:45:42Z", GoVersion:"go1.12.17", Compiler:"gc", Platform:"linux/amd64"}

Answer 1

Newer IKS clusters don't have Docker installed - they use containerd to execute containers.
If you still want to execute Docker on Jenkins you can either use Kubernetes plugin and pods with dind containers or rebuild your own jenkins based on dind - something like this: https://hub.docker.com/r/vixns/jenkins-dind/