Разрабатывая приложение Spring Boot, я использовал docker-compose для создания своих контейнеров.А для Kubernetes я использовал компос через миникубы.Я отправил свои изображения в докер-концентратор и попытался развернуть свой контейнер обоими способами:
kompose up
и
kompose convert-f docker-compose.yaml kubectl create -f (deplymentfiles)
Но я получаю этот ответ
WARN Volume mount on the host "/home/App/src/main/docker/postgres-data" isn't supported - ignoring path on the host
INFO We are going to create Kubernetes Deployments, Services and PersistentVolumeClaims for your Dockerized application. If you need different kind of resources, use the 'kompose convert' and 'kubectl create -f' commands instead.
INFO Deploying application in "default" namespace
INFO Successfully created Service: adminer
INFO Successfully created Service: app
INFO Successfully created Service: mypostgres
INFO Successfully created Deployment: adminer
INFO Successfully created Deployment: app
INFO Successfully created Deployment: mypostgres
INFO Successfully created PersistentVolumeClaim: mypostgres-claim0 of size 100Mi. If your cluster has dynamic storage provisioning, you don't have to do anything. Otherwise you have to create PersistentVolume to make PVC work
при запуске kubectl get pods
NAME READY STATUS RESTARTS AGE
adminer-6cd96f8846-69qb8 1/1 Running 0 2m
app-5796c489ff-m46xk 0/1 ImagePullBackOff 0 2m
mypostgres-649865b4d8-nhglj 1/1 Running 0 2m
kubectl description pod app-5796c489ff-m46xk
показывает это
Name: app-5796c489ff-m46xk
Namespace: default
Node: minikube/192.168.99.100
Start Time: Mon, 11 Jun 2018 11:02:32 +0200
Labels: io.kompose.service=app
pod-template-hash=1352704599
Annotations: <none>
Status: Pending
IP: 172.17.0.3
Controlled By: ReplicaSet/app-5796c489ff
Containers:
app:
Container ID:
Image: iroolapp
Image ID:
Port: 8086/TCP
Host Port: 0/TCP
State: Waiting
Reason: ImagePullBackOff
Ready: False
Restart Count: 0
Environment:
DATABASE_HOST: mypostgres
DATABASE_NAME: test
DATABASE_PASSWORD: root
DATABASE_PORT: 5432
DATABASE_USER: root
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from default-token-wdb8n (ro)
Conditions:
Type Status
Initialized True
Ready False
PodScheduled True
Volumes:
default-token-wdb8n:
Type: Secret (a volume populated by a Secret)
SecretName: default-token-wdb8n
Optional: false
QoS Class: BestEffort
Node-Selectors: <none>
Tolerations: <none>
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal Scheduled 3m default-scheduler Successfully assigned app-5796c489ff-m46xk to minikube
Normal SuccessfulMountVolume 3m kubelet, minikube MountVolume.SetUp succeeded for volume "default-token-wdb8n"
Normal Pulling 1m (x4 over 3m) kubelet, minikube pulling image "iroolapp"
Warning Failed 1m (x4 over 3m) kubelet, minikube Failed to pull image "iroolapp": rpc error: code = Unknown desc = Error response from daemon: pull access denied for iroolapp, repository does not exist or may require 'docker login'
Warning Failed 1m (x4 over 3m) kubelet, minikube Error: ErrImagePull
Normal BackOff 1m (x6 over 3m) kubelet, minikube Back-off pulling image "iroolapp"
Warning Failed 1m (x6 over 3m) kubelet, minikube Error: ImagePullBackOff
Наконец, это мой файл docker-compose
version: '3'
services:
app:
image: iroolapp
depends_on:
- mypostgres
ports:
- "9000:8086"
environment:
- DATABASE_HOST=mypostgres
- DATABASE_USER=root
- DATABASE_PASSWORD=root
- DATABASE_NAME=test
- DATABASE_PORT=5432
networks:
default:
mypostgres:
image: postgres:9.6-alpine
container_name: mypostgres
ports:
- "5433:5432"
environment:
- POSTGRES_PASSWORD=root
- POSTGRES_USER=root
- POSTGRES_DB=irooldb
volumes:
- ./postgres-data:/var/lib/postgresql/data
adminer:
image: adminer
ports:
- 8080:8080
networks:
default:
networks:
default:
external:
name: mynetwork
Мой вопрос: на что ссылается ImagePullBackoff?использование kompose это хороший подход?и является ли это необходимым шагом для отправки изображений в докер-концентратор перед использованием kubernetes