[英]Kubernetes (K8s) Minikubes : how to use service URL in ConfigMap so other pods can use it
数据库部署.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
app: postgres
name: postgres-db
spec:
replicas:
selector:
matchLabels:
app: postgres-db
template:
metadata:
labels:
app: postgres-db
spec:
containers:
- name: postgres-db
image: postgres:latest
ports:
- protocol: TCP
containerPort: 1234
env:
- name: POSTGRES_DB
value: "classroom"
- name: POSTGRES_USER
value: temp
- name: POSTGRES_PASSWORD
value: temp
数据库服务.yaml
apiVersion: v1
kind: Service
metadata:
name: database-service
spec:
selector:
app: postgres-db
ports:
- protocol: TCP
port: 1234
targetPort: 1234
我想将此数据库服务 url 用于其他部署,因此我尝试将其添加到 configMap
my-configMap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
name: classroom-configmap
data:
database_url: database-service
[不工作] 预期 - database_url: database-service(将替换为相应的服务 URL)
ERROR - Driver org.postgresql.Driver claims to not accept jdbcUrl, database-service
$ kubectl describe configmaps classroom-configmap
Output:
Name: classroom-configmap
Namespace: default
Labels: <none>
Annotations: <none>
Data
====
database_url:
----
database-service
BinaryData
====
Events: <none>
根据您遇到的错误:
Driver org.postgresql.Driver claims to not accept jdbcUrl
URL 似乎存在一些问题,最新的 PSQL 驱动程序可能会抱怨。
jdbc:postgres:
不对,使用jdbc:postgresql:
代替jdbc:postgresql://<username>:<passwor>..., user parameters instead: jdbc:postgresql://<host>:<port>/<dbname>?user=<username>&password=<password>
sslmode=require
参数来强制 SSL 连接更新了 my-configMap.yaml (database_url)
apiVersion: v1
kind: ConfigMap
metadata:
name: classroom-configmap
data:
database_url: jdbc:postgresql://database-service.default.svc.cluster.local:5432/classroom
预期 URL - jdbc:{DATABASE}://{DATABASE_SERVICE with NAMESPACE}:{DATABASE_PORT}/{DATABASE_NAME}
DATABASE_SERVICE - database-service
命名空间 - default
带有 NAMESPACE 的 DATABASE_SERVICE - database-service.default.svc.cluster.local
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