Im trying to follow the get started docker's tutorials, but I get stuck when you have to work with kuberetes. I'm using microk8s to create the clusters.
My Dockerfile:
FROM node:6.11.5WORKDIR /usr/src/app
COPY package.json .
RUN npm install
COPY . .
CMD [ "npm", "start" ]
My bb.yaml:
apiVersion: apps/v1
kind: Deployment
metadata:
name: bb-demo
namespace: default
spec:
replicas: 1
selector:
matchLabels:
bb: web
template:
metadata:
labels:
bb: web
spec:
containers:
- name: bb-site
image: bulletinboard:1.0
---
apiVersion: v1
kind: Service
metadata:
name: bb-entrypoint
namespace: default
spec:
type: NodePort
selector:
bb: web
ports:
- port: 8080
targetPort: 8080
nodePort: 30001
I create the image with
docker image build -t bulletinboard:1.0 .
And I create the pod and the service with:
microk8s.kubectl apply -f bb.yaml
The pod is created, but, when I look for the state of my pods with
microk8s.kubectl get all
It says:
NAME READY STATUS RESTARTS AGE
pod/bb-demo-7ffb568776-6njfg 0/1 ImagePullBackOff 0 11m
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/bb-entrypoint NodePort 10.152.183.2 <none> 8080:30001/TCP 11m
service/kubernetes ClusterIP 10.152.183.1 <none> 443/TCP 4d
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/bb-demo 0/1 1 0 11m
NAME DESIRED CURRENT READY AGE
replicaset.apps/bb-demo-7ffb568776 1 1 0 11m
Also, when I look for it at the kubernetes dashboard it says:
Failed to pull image "bulletinboard:1.0": rpc error: code = Unknown desc = failed to resolve image "docker.io/library/bulletinboard:1.0": no available registry endpoint: pull access denied, repository does not exist or may require authorization: server message: insufficient_scope: authorization failed
Q: Why do I get this error? Im just following the tutorial without skipping anything.
Im already logged with docker.
You need to push this locally built image to the Docker Hub registry. For that, you need to create a Docker Hub account if you do not have one already.
Once you do that, you need to login to Docker Hub from your command line.
docker login
Tag your image so it goes to your Docker Hub repository.
docker tag bulletinboard:1.0 <your docker hub user>/bulletinboard:1.0
Push your image to Docker Hub
docker push <your docker hub user>/bulletinboard:1.0
Update the yaml file to reflect the new image repo on Docker Hub.
spec: containers: - name: bb-site image: <your docker hub user>/bulletinboard:1.0
re-apply the yaml file
microk8s.kubectl apply -f bb.yaml
You can host a local registry server if you do not wish to use Docker hub.
docker run -d -p 5000:5000 --restart=always --name registry registry:2
sudo docker tag bulletinboard:1.0 localhost:5000/bulletinboard
sudo docker push localhost:5000/bulletinboard
yaml
file:spec:
containers:
- name: bb-site
image: localhost:5000/bulletinboard
kubectl apply -f bb.yaml