Issue with any deployments on my new minikube cluster

Hello,
I'm following the content provided by the course, created a minikube cluster using the docker driver (it was easier than the virtualbox method for my environment). All good
- $ minikube status
- minikube
- type: Control Plane
- host: Running
- kubelet: Running
- apiserver: Running
- kubeconfig: Configured
- minikube-m02
- type: Worker
- host: Running
- kubelet: Running
Great! Then I tried my first deployment using this yaml file:
- cat def-deploy.yaml
- apiVersion: apps/v1
- kind: Deployment
- metadata:
- name: nginx-deployment
- labels:
- app: nginx-deployment
- spec:
- replicas: 3
- selector:
- matchLabels:
- app: nginx-deployment
- template:
- metadata:
- labels:
- app: nginx-deployment
- spec:
- containers:
- - name: nginx
- image: nginx:1.20.2
- ports:
- - containerPort: 80
Applied this configuration : kubectl create -f def-deploy.yaml
all good... until I tried to check the pods:
- kubectl get pods
- NAME READY STATUS RESTARTS AGE
- nginx-deployment-594d7b4ff5-8gjf9 0/1 ImageInspectError 0 4s
- nginx-deployment-594d7b4ff5-clbp2 0/1 ImageInspectError 0 4s
- nginx-deployment-594d7b4ff5-tv4sm 0/1 ImageInspectError 0 4s
Then:
- kubectl describe pod nginx-deployment-594d7b4ff5-8gjf9
- Name: nginx-deployment-594d7b4ff5-8gjf9
- Namespace: default
- Priority: 0
- Service Account: default
- Node: minikube-m02/192.168.58.3
- Start Time: Wed, 19 Feb 2025 22:04:05 +0000
- Labels: app=nginx-deployment
- pod-template-hash=594d7b4ff5
- Annotations: <none>
- Status: Pending
- IP: 10.244.1.4
- IPs:
- IP: 10.244.1.4
- Controlled By: ReplicaSet/nginx-deployment-594d7b4ff5
- Containers:
- nginx:
- Container ID:
- Image: nginx:1.20.2
- Image ID:
- Port: 80/TCP
- Host Port: 0/TCP
- State: Waiting
- Reason: ImageInspectError
- Ready: False
- Restart Count: 0
- Environment: <none>
- Mounts:
- /var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-6hdk8 (ro)
- Conditions:
- Type Status
- PodReadyToStartContainers True
- Initialized True
- Ready False
- ContainersReady False
- PodScheduled True
- Volumes:
- kube-api-access-6hdk8:
- Type: Projected (a volume that contains injected data from multiple sources)
- TokenExpirationSeconds: 3607
- ConfigMapName: kube-root-ca.crt
- ConfigMapOptional: <nil>
- DownwardAPI: true
- QoS Class: BestEffort
- Node-Selectors: <none>
- Tolerations: node.kubernetes.io/not-ready:NoExecute op=Exists for 300s
- node.kubernetes.io/unreachable:NoExecute op=Exists for 300s
- Events:
- Type Reason Age From Message
- ---- ------ ---- ---- -------
- Normal Scheduled 32s default-scheduler Successfully assigned default/nginx-deployment-594d7b4ff5-8gjf9 to minikube-m02
- Warning InspectFailed 5s (x4 over 31s) kubelet Failed to inspect image "": rpc error: code = Unknown desc = short-name "nginx:1.20.2" did not resolve to an alias and no unqualified-search registries are defined in "/etc/containers/registries.conf"
- Warning Failed 5s (x4 over 31s) kubelet Error: ImageInspectError
Why this vanilla install of minikube does not allow me to deploy anything successfully ?
Thank you,
Comments
-
Hi @fmiranda,
Does your Minikube cluster deployed with the Docker driver have access to the internet? It is possible that it causes resolve issues and the image name alone cannot be resolved, therefore it was never pulled from the public Docker Hub registry.
You may try to update the image name todocker.io/library/nginx:1.20.2
. If the deployment is still unsuccessful, then your Docker nodes need to be inspected for connectivity.Regards,
-Chris0 -
Thank you @chrispokorni
This is how my deployment yaml file looks like with your suggestions:
- apiVersion: apps/v1
- kind: Deployment
- metadata:
- name: nginx-deployment
- labels:
- app: nginx-deployment
- spec:
- replicas: 3
- selector:
- matchLabels:
- app: nginx-deployment
- template:
- metadata:
- labels:
- app: nginx-deployment
- spec:
- containers:
- - name: nginx
- image: docker.io/library/nginx:1.20.2
- ports:
- - containerPort: 80
creating the deployment again:
- $ kubectl create -f def-deploy.yaml
- deployment.apps/nginx-deployment created
Checking the pods:
- fmiranda@kubernetes:~$ kubectl get pods
- NAME READY STATUS RESTARTS AGE
- nginx-deployment-769f4c67db-7ltfw 0/1 ContainerCreating 0 3s
- nginx-deployment-769f4c67db-lk8bd 0/1 ContainerCreating 0 3s
- nginx-deployment-769f4c67db-qbhnk 0/1 ContainerCreating 0 3s
Then:
- fmiranda@kubernetes:~$ kubectl get pods
- NAME READY STATUS RESTARTS AGE
- nginx-deployment-769f4c67db-7ltfw 1/1 Running 0 5s
- nginx-deployment-769f4c67db-lk8bd 1/1 Running 0 5s
- nginx-deployment-769f4c67db-qbhnk 1/1 Running 0 5s
It all works out now! wooohoo!
Is this just with me? Or is this that needs to be updated in the course content?
Thank you !!!
0 -
Hi @fmiranda,
The name resolution issue you encountered is possibly attributed to the Docker driver and its networking limitations. I have not encountered this issue with hypervisor drivers, while launching applications imperatively with
kubectl
or declaratively from a manifest.
There is a note, later on in the course however, when deploying an application from the Kubernetes Dashboard, that the image name may need to be prefixed bydocker.io/library/
, a known issue with earlier Dashboard versions.Regards,
-Chris0
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