我有一个使用 docker-compose 开发和测试的微服务。现在我想将它部署到 Kubernetes。
我的 docker-compose 文件的一部分如下所示：
tasksdb:
container_name: tasks-db
image: mongo:4.4.1
restart: always
ports:
- '6004:27017'
volumes:
- ./tasks_service/tasks_db:/data/db
networks:
- backend
tasks-service:
container_name: tasks-service
build: ./tasks_service
restart: always
ports:
- "5004:3000"
volumes:
- ./tasks_service/logs:/usr/src/app/logs
- ./tasks_service/tasks_attachments/:/usr/src/app/tasks_attachments
depends_on:
- tasksdb
networks:
- backend
我使用猫鼬连接到数据库，它工作正常：
const connection = "mongodb://tasks-db:27017/tasks";
const connectDb = () => {
mongoose.connect(connection, {useNewUrlParser:true, useCreateIndex:true, useFindAndModify: false});
return mongoose.connect(connection);
};
利用 Kompose，我创建了一个部署文件，但是我必须相应地修改持久卷和持久卷声明。
我有这样的事情：
apiVersion: v1
kind: PersistentVolume
metadata:
name: tasks-volume
labels:
type: local
spec:
storageClassName: manual
volumeMode: Filesystem
capacity:
storage: 10Gi
accessModes:
- ReadWriteMany
nfs:
server: 192.168.60.50
path: /tasks_db
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: tasksdb-claim0
spec:
storageClassName: manual
accessModes:
- ReadWriteMany
resources:
requests:
storage: 1Gi
我改变了 mongourl，如下所示：
const connection = "mongodb://tasksdb.default.svc.cluster.local:27017/tasks";
我的部署如下所示：
apiVersion: v1
items:
- apiVersion: v1
kind: Service
metadata:
annotations:
kompose.cmd: kompose convert -f docker-compose.yml -o k8manifest.yml
kompose.version: 1.22.0 (955b78124)
creationTimestamp: null
labels:
io.kompose.service: tasks-service
name: tasks-service
spec:
ports:
- name: "5004"
port: 5004
targetPort: 3000
selector:
io.kompose.service: tasks-service
status:
loadBalancer: {}
- apiVersion: v1
kind: Service
metadata:
annotations:
kompose.cmd: kompose convert -f docker-compose.yml -o k8manifest.yml
kompose.version: 1.22.0 (955b78124)
creationTimestamp: null
labels:
io.kompose.service: tasksdb
name: tasksdb
spec:
ports:
- name: "6004"
port: 6004
targetPort: 27017
selector:
io.kompose.service: tasksdb
status:
loadBalancer: {}
- apiVersion: apps/v1
kind: Deployment
metadata:
annotations:
kompose.cmd: kompose convert -f docker-compose.yml -o k8manifest.yml
kompose.version: 1.22.0 (955b78124)
creationTimestamp: null
labels:
io.kompose.service: tasks-service
name: tasks-service
spec:
replicas: 1
selector:
matchLabels:
io.kompose.service: tasks-service
strategy:
type: Recreate
template:
metadata:
annotations:
kompose.cmd: kompose convert -f docker-compose.yml -o k8manifest.yml
kompose.version: 1.22.0 (955b78124)
creationTimestamp: null
labels:
io.kompose.service: tasks-service
spec:
containers:
- image: 192.168.60.50:5000/blascal_tasks-service
name: tasks-service
imagePullPolicy: IfNotPresent
ports:
- containerPort: 3000
restartPolicy: Always
status: {}
- apiVersion: apps/v1
kind: Deployment
metadata:
annotations:
kompose.cmd: kompose convert -f docker-compose.yml -o k8manifest.yml
kompose.version: 1.22.0 (955b78124)
creationTimestamp: null
labels:
io.kompose.service: tasksdb
name: tasksdb
spec:
replicas: 1
selector:
matchLabels:
io.kompose.service: tasksdb
strategy:
type: Recreate
template:
metadata:
annotations:
kompose.cmd: kompose convert -f docker-compose.yml -o k8manifest.yml
kompose.version: 1.22.0 (955b78124)
creationTimestamp: null
labels:
io.kompose.service: tasksdb
spec:
containers:
- image: mongo:4.4.1
name: tasks-db
ports:
- containerPort: 27017
resources: {}
volumeMounts:
- mountPath: /data/db
name: tasksdb-claim0
restartPolicy: Always
volumes:
- name: tasksdb-claim0
persistentVolumeClaim:
claimName: tasksdb-claim0
status: {}
有几个服务我为我的路由添加了一个入口资源：
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
name: test-ingress
annotations:
kubernetes.io/ingress.class: nginx
nginx.ingress.kubernetes.io/use-regex: "true"
nginx.ingress.kubernetes.io/rewrite-target: /
spec:
rules:
- http:
paths:
- path: /
pathType: Prefix
backend:
serviceName: tasks-service
servicePort: 5004
如您所见，部署似乎运行良好
。
但是，我有三个问题：
尽管我可以点击我的默认路径，它只是读取“任务服务已启动”，但我无法访问连接到数据库的 /api/task/raise 之类的猫鼬路由，但它显示“..buffering timed out”之类的
。我猜，路径没有链接到数据库服务？任务服务吊舱提供了这个
每当有电涌并且我的机器关闭时，在我从持久卷中删除配置文件之前，启动数据库部署都会失败，如何防止这种文件损坏？
当我打算将集群转移到不同的网络时，我一直在研究如何更改集群的主 IP。请问有什么指导吗？
kubectl 日志 --namespace=kube-system -l k8s-app=kube-dns
以上给出了这个：
