How to connect my webservice with mysql on k8s? - mysql

Question

I am trying to deploy a webservice, which has to connect with Mysql. Everything is working when I run them on docker-compose but on Kubernetes (Minikube) I am getting these error: dial tcp: lookup mysql on 10.96.0.10:53: no such host. Any idea what I may be missing? Here are my manifest-files:
The webservice hast to be accessible over the internet and is listening on port 8080. Service:
apiVersion: v1
kind: Service
metadata:
name: webservice-svc
spec:
selector:
app: blur
ports:
- protocol: TCP
port: 8080
targetPort: 8080
type: NodePort
Deployment:
apiVersion: apps/v1
kind: Deployment
metadata:
name: blur-service
spec:
selector:
matchLabels:
app: blur
template:
metadata:
labels:
app: blur
spec:
containers:
- name: blur-service
image: marjugoncalves/blur-service
ports:
- containerPort: 8080
The manifest-files of mysql:
Service:
apiVersion: v1
kind: Service
metadata:
name: mysql-service
spec:
selector:
app: blur
ports:
- protocol: TCP
port: 3306
targetPort: 3306
Deployment:
apiVersion: apps/v1
kind: Deployment
metadata:
name: mysql
spec:
selector:
matchLabels:
app: blur
template:
metadata:
labels:
app: blur
spec:
containers:
- name: mysql
image: mysql:8.0
ports:
- containerPort: 3306

Answer 1

I found out what was my mistake: In my app, in the string used to connect to the database I used "mysql" as hostname so that the service name also has to be called like that. My service should look like this:
apiVersion: v1
kind: Service
metadata:
name: mysql //here was the mistake
spec:
selector:
app: blur
ports:
- protocol: TCP
port: 3306
targetPort: 3306