k3s with skaffold: container can't be pulled

2/12/2021

I'm creating a micro-service API I want to run on a local raspberry k3s cluster.

The aim is to use skaffold to deploy during development.

The problem I have is everytime I use skaffold dev I have the same error :

deployment/epos-auth-deploy: container epos-auth is waiting to start: 192.168.1.10:8080/epos_auth:05ea8c1@sha256:4e7f7c7224ce1ec4831627782ed696dee68b66929b5641e9fc6cfbfc4d2e82da can't be pulled

I've tried to setup a local docker registry which is defined with this docker-compose.yaml file:

version: '2.0'
services:
  registry:
    image: registry:latest
    volumes:
      - ./registry-data:/var/lib/registry
    networks:
      - registry-ui-net

  ui:
    image: joxit/docker-registry-ui:static
    ports:
      - 8080:80
    environment:
      - REGISTRY_TITLE=Docker Registry
      - REGISTRY_URL=http://registry:5000
    depends_on:
      - registry
    networks:
      - registry-ui-net

networks:
  registry-ui-net:

It's working on http://192.168.1.10:8080 on my local network.

It seems ok when it builds and pushes the image.

The image is visible in the repository

I also have set /etc/docker/daemon.json on my local computer

{
        "insecure-registries": ["192.168.1.10:8080"],
        "registry-mirrors": ["http://192.168.1.10:8080"]
}

I've set the /etc/rancher/k3s/registries.yaml on all the nodes:

mirrors:
  docker.io:
    endpoint:
      - "http://192.168.1.10:8080"

skaffold.yaml looks like this :

apiVersion: skaffold/v2alpha3
kind: Config
metadata:
  name: epos-skaffold
deploy:
  kubectl:
    manifests:
      - ./infra/k8s/skaffold/*
build:
  local:
    useBuildkit: true
  artifacts:
    - image: epos_auth
      context: epos-auth
      docker:
        dockerfile: Dockerfile
      sync:
        manual:
          - src: 'src/**/*.ts'
            dest: . 

And ./infra/k8s/skaffold/epos-auth-deploy.yaml looks like this :

apiVersion: apps/v1
kind: Deployment
metadata: 
  name: epos-auth-deploy
spec:
  replicas: 1
  selector:
    matchLabels:
      app: epos-auth
  template:
    metadata:
      labels:
        app: epos-auth
    spec:
      containers:
        - name: epos-auth
          image: epos_auth
          env:
            - name: NATS_URL
              value: http://nats-srv:4222
            - name: NATS_CLUSTER_ID
              value: epos
            - name: NATS_CLIENT_ID
              valueFrom:
                fieldRef:
                  fieldPath: metadata.name
            - name: JWT_KEY
              valueFrom:
                secretKeyRef: 
                  name: jwt-keys
                  key: key
            - name: JWT_PRIVATE_KEY
              valueFrom:
                secretKeyRef: 
                  name: jwt-keys
                  key: private_key
            - name: JWT_PUBLIC_KEY
              valueFrom:
                secretKeyRef: 
                  name: jwt-keys
                  key: public_key
            - name: MONGO_URI
              value: mongodb://mongodb-srv:27017/auth-service
---
apiVersion: v1
kind: Service
metadata:
  name: epos-auth-srv
spec:
  selector:
    app: epos-auth
  ports:
    - name: epos-auth
      protocol: TCP
      port: 3000
      targetPort: 3000

I did

skaffold config set default-repo 192.168.1.10:8080

skaffold config set insecure-registries 192.168.1.10:8080

I really don't know what's wrong with this.

Do you have any clue please ?

-- T00rk
docker-registry
k3s
kubernetes
skaffold

2 Answers

2/13/2021

Please change the docker.io reference as it is confusing;

mirrors:
  docker.io:
    endpoint:
      - "http://192.168.1.10:8080"

And use the image with the full registry path just like: registry.local:5000/epos_auth

https://devopsspiral.com/articles/k8s/k3d-skaffold/

-- DarthHTTP
Source: StackOverflow

2/15/2021
  • I installed docker-ce on the master node. Then I created the master node with --docker parameter in the command.

  • When I created the k3s node, I defined a context. I forgot to replace default context in ~/.skaffold/config

-- T00rk
Source: StackOverflow