我有一个使用 docker-compose 的 docker 应用程序，我想在 openshift-3 中部署该项目，所以我使用 kompose。 这是我的码头工人撰写文件：-
version: '3'
services:
katana-db:
image: postgres
restart: always
environment:
POSTGRES_PASSWORD: *****
POSTGRES_USER: *****
backend:
depends_on:
- katana-db
build:
context: .
dockerfile: dockerfile_uwsgi
image: warrior_deployment_backend
extra_hosts:
- "example.com:100.0.0.201"
volumes:
- katana-secrets:/secrets
- katana-static:/warriorframework_py3/static
- katana-wapps:/warriorframework_py3/katana/wapps
- katana-wui:/warriorframework_py3/katana/wui
ports:
- "4000:4000"
environment:
DB_HOST: katana-db
DB_NAME: warrior
DB_USER: *****
DB_PASSWORD: *****
migration:
depends_on:
- backend
image: warrior_deployment_backend
entrypoint: ["sh", "-c"]
command: ["
python /warriorframework_py3/katana/manage.py collectstatic --noinput;
python /warriorframework_py3/katana/manage.py makemigrations;
python /warriorframework_py3/katana/manage.py migrate;
echo "from django.contrib.auth import get_user_model; User = get_user_model(); x = User.objects.create_superuser('admin', '', 'warriorframework') if not User.objects.filter(username='admin').exists() else User.objects.get(username='admin'); x.set_password('warriorframework'); x.save()" | python /warriorframework_py3/katana/manage.py shell;
"]
volumes:
- katana-static:/warriorframework_py3/static
- katana-wapps:/warriorframework_py3/katana/wapps
- katana-wui:/warriorframework_py3/katana/wui
environment:
DB_HOST: katana-db
DB_NAME: warrior
DB_USER: warrior
DB_PASSWORD: qwerty
frontend:
depends_on:
- backend
build:
context: .
dockerfile: dockerfile_nginx
image: warrior_deployment_frontend
volumes:
- katana-static:/warriorframework_py3/static
- nginx-secrets:/secrets
ports:
- "9443:8443"
labels:
kompose.service.expose: "true"
volumes:
katana-static:
driver: local-persist
driver_opts:
mountpoint: /data/local-persist/data/warrior/katana-static
katana-wapps:
driver: local-persist
driver_opts:
mountpoint: /data/local-persist/data/warrior/wapps
katana-wui:
driver: local-persist
driver_opts:
mountpoint: /data/local-persist/data/warrior/wui
nginx-secrets:
driver: local-persist
driver_opts:
mountpoint: /data/local-persist/data/warrior/nginx-secrets
katana-secrets:
driver: local-persist
driver_opts:
mountpoint: /data/local-persist/data/warrior/katana-secrets
当我运行时：
sudo kompose up --provider openshift
错误如下：
FATA Error while deploying application: persistentvolumeclaims "katana-static" already exists
完整的控制台日志如下：
INFO Building image 'warrior_deployment_backend' from directory 'warrior_docker_deployment'
INFO Image 'warrior_deployment_backend' from directory 'warrior_docker_deployment' built successfully
INFO Pushing image 'warrior_deployment_backend:latest'
INFO Multiple authentication credentials detected. Will try each configuration.
INFO Attempting authentication credentials 'docker-registry-default.router.default.svc.cluster.local
INFO Successfully pushed image 'warrior_deployment_backend:latest'
INFO Building image 'warrior_deployment_frontend' from directory 'warrior_docker_deployment'
INFO Image 'warrior_deployment_frontend' from directory 'warrior_docker_deployment' built successfully
INFO Pushing image 'warrior_deployment_frontend:latest' to registry
INFO Multiple authentication credentials detected. Will try each configuration.
INFO Attempting authentication credentials 'docker-registry-default.router.default.svc.cluster.local
INFO Successfully pushed image 'warrior_deployment_frontend:latest'
INFO We are going to create OpenShift DeploymentConfigs, Services and PersistentVolumeClaims for your Dockerized application.
If you need different kind of resources, use the 'kompose convert' and 'oc create -f' commands instead.
INFO Deploying application in "rak-warrior-ui" namespace
INFO Successfully created Service: backend
INFO Successfully created Service: frontend
INFO Successfully created DeploymentConfig: backend
INFO Successfully created ImageStream: backend
INFO Successfully created PersistentVolumeClaim: katana-secrets 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
INFO Successfully created PersistentVolumeClaim: katana-static 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
INFO Successfully created PersistentVolumeClaim: katana-wapps 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
INFO Successfully created PersistentVolumeClaim: katana-wui 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
INFO Successfully created DeploymentConfig: frontend
INFO Successfully created ImageStream: frontend
INFO Successfully created Route: frontend
FATA Error while deploying application: persistentvolumeclaims "katana-static" already exists
根据我的观察/分析，错误可能是由于以下原因造成的：-
Kompose可能错误地解释了共享卷。如果我更清楚地解释这一点，就像"Katana-static"是前端、后端和迁移容器使用的共享卷。kompose执行以下步骤(这里我只关注共享音量：武士刀静态(
- kompose up将读取docker-compose.yml
- 现在第一个容器是后端，所以它在卷下找到武士刀静态，所以它创建了卷。
- 接下来它转到下一个容器并再次找到武士刀静态，因此它尝试再次创建
- 由于它尝试再次创建已经存在的共享持久卷katana-static，因此会抛出我们面临的错误。
如果这确实正在发生，那么可以解决此问题吗？ 否则是什么导致了此错误？
如果还有其他论坛可以提出这个问题，请在评论部分分享链接。提前谢谢。
问题可能与本地卷有关
volumes:
katana-static:
driver: local-persist
driver_opts:
mountpoint: /data/local-persist/data/warrior/katana-static
katana-wapps:
driver: local-persist
driver_opts:
mountpoint: /data/local-persist/data/warrior/wapps
katana-wui:
driver: local-persist
driver_opts:
mountpoint: /data/local-persist/data/warrior/wui
nginx-secrets:
driver: local-persist
driver_opts:
mountpoint: /data/local-persist/data/warrior/nginx-secrets
katana-secrets:
driver: local-persist
driver_opts:
mountpoint: /data/local-persist/data/warrior/katana-secrets
本地卷在 OpenShift 中不起作用。 我建议你使用"kompose convert"命令将docker-compose转换为Kubernetes YAML。
然后查看并更新 pvc 和 pv。然后最终逐个部署资源