Problem: I have a VERY simple spring boot api with hard coded db connection strings. I would like to feed these connection strings FROM a pod in my K8s cluster but I am having issues with telling the api to read from env variables.
My Dockerfile:
FROM gcr.io/distroless/java:8
ARG JAR_FILE=target/*.jar
COPY ${JAR_FILE} app.jar
ENTRYPOINT ["java","-jar","/app.jar"]
This is the db-secret.yaml file:
apiVersion: v1
kind: Secret
metadata:
name: db-secret
data:
host: XXXX
user: XXXX
password: XXXX
database: XXXX
This is the env section of my api pod my deployment file:
env:
- name: ORIGIN
value: https://myclient.app.com
- name: HOST
valueFrom:
secretKeyRef:
name: db-secret
key: host
- name: PASSWORD
valueFrom:
secretKeyRef:
name: db-secret
key: password
- name: USERNAME
valueFrom:
secretKeyRef:
name: db-secret
key: user
- name: DATABASE
valueFrom:
secretKeyRef:
name: db-secret
key: database
This is my Java application.properties file:
spring.jpa.hibernate.ddl-auto=create
spring.datasource.url=${HOST}/"todos"
spring.datasource.username=${USERNAME}
spring.datasource.password=${PASSWORD}
However...when I try to build the app using ./mvnw clean package i get: * java.lang.IllegalStateException: Failed to load ApplicationContext * BeanCreationException: Error creating bean with name 'entityManagerFactory'
I tried exporting the variables via command line but that didn't work. I know node has process.env.SOME_VAR. Is there something like this for Java? I've been combing through the interwebs for a while and trying different solutions but not much is working at this point.
