How to fix that CAPD fails to interact with error "Cannot connect to the Docker daemon"

[youngbo89]

When I tried to create a workload-cluster according to Quick Start page, I am stuck to create workload cluster with error message

externalMachine: failed to list containers: failed to list containers: failed to list containers: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

But docker is running in my localhost(MAC). How to fix this problem?

POD logs

localhost $ kubectl -n capd-system logs capd-controller-manager-6d495f5c47-l9gfz
E0202 15:13:23.579753       1 controller.go:326] "Reconciler error" err="failed to create helper for managing the externalMachine: failed to list containers: failed to list containers: failed to list containers: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?" controller="dockermachine" controllerGroup="infrastructure.cluster.x-k8s.io" controllerKind="DockerMachine" DockerMachine="default/capi-quickstart-md-0-infra-66x6l-kjslk" namespace="default" name="capi-quickstart-md-0-infra-66x6l-kjslk" reconcileID=94a1c852-436a-4680-97f0-8c4f211b51ec

Environment

PC

Apple MAC (m2 chipset)

Docker

Running Status:

localhost $ docker --version
Docker version 20.10.16, build aa7e414

localhost $ docker ps
CONTAINER ID   IMAGE                  COMMAND                  CREATED      STATUS        PORTS                       NAMES
b72bc2e53cce   kindest/node:v1.25.3   "/usr/local/bin/entr…"   2 days ago   Up 11 hours   127.0.0.1:54057->6443/tcp   kind-control-plane

Socker Permission:

localhost $ ls -al /var/run/docker.sock
lrwxr-xr-x  1 root  daemon  35 12 22 13:08 /var/run/docker.sock -> /Users/user/.docker/run/docker.sock

localhost $ ls -al /Users/user/.docker/run/docker.sock
srwxrwxrwx  1 user  staff  0  2  2 13:21 /Users/user/.docker/run/docker.sock

clusterctl

localhost $ clusterctl version
clusterctl version: &version.Info{Major:"1", Minor:"3", GitVersion:"v1.3.2", GitCommit:"18c6e8e6cda0eaf71d509258186fa8db30a8fa62", GitTreeState:"clean", BuildDate:"2023-01-10T13:26:16Z", GoVersion:"go1.19.4", Compiler:"gc", Platform:"darwin/arm64"}

CAPD

Version:

localhost $ kubectl -n capd-system get deployment -o yaml | grep image
          image: gcr.io/k8s-staging-cluster-api/capd-manager:v1.3.3

POD Security:

localhost $ kubectl -n capd-system get pod capd-controller-manager-6d495f5c47-8pcqh -o yaml
    securityContext:
      privileged: true
    volumeMounts:
    - mountPath: /var/run/docker.sock
      name: dockersock

[killianmuldoon]

Did you create a kind cluster using the docker specific commands i.e.

cat > kind-cluster-with-extramounts.yaml <<EOF
kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
nodes:
- role: control-plane
  extraMounts:
    - hostPath: /var/run/docker.sock
      containerPath: /var/run/docker.sock
EOF

kind create cluster --config kind-cluster-with-extramounts.yaml

[killianmuldoon]

Also note - it's better to open an issue on the repo for this kind of topic.

[youngbo89]

Thank you so much @killianmuldoon! It works :)

I get off on the right foot 🤪