how to connect a cloud sql instance to an sql cluster? - mysql

Question

i have the deployment yaml file on the cluster and the connection name of the sql instance and the public ip address, so what should i add and where in order for me to connect the intance and cluster? i wanna be able to add something to the sql cluster and it gets automatically saved to the instance and vice-versa.
this is the deployment code:
apiVersion: apps/v1
kind: Deployment
metadata:
annotations:
deployment.kubernetes.io/revision: "1"
creationTimestamp:
generation: 1
labels:
app: mysql
name: mysql
namespace: default
resourceVersion: "1420"
selfLink:
uid:
spec:
progressDeadlineSeconds: 600
replicas: 1
revisionHistoryLimit: 10
selector:
matchLabels:
app: mysql
strategy:
rollingUpdate:
maxSurge: 25%
maxUnavailable: 25%
type: RollingUpdate
template:
metadata:
creationTimestamp: null
labels:
app: mysql
spec:
containers:
- env:
- name:
valueFrom:
secretKeyRef:
key:
name: mysql
image: mysql:5.6
imagePullPolicy: IfNotPresent
name: mysql
ports:
- containerPort: 3306
name: mysql
protocol: TCP
resources: {}
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
volumeMounts:
- mountPath: /var/lib/mysql
name:
dnsPolicy: ClusterFirst
restartPolicy: Always
schedulerName: default-scheduler
securityContext: {}
terminationGracePeriodSeconds: 30
volumes:
- name:
persistentVolumeClaim:
claimName:
status:
availableReplicas: 1
conditions:
- lastTransitionTime:
lastUpdateTime:
message: Deployment has minimum availability.
reason: MinimumReplicasAvailable
status: "True"
type: Available
- lastTransitionTime:
lastUpdateTime:
message: ReplicaSet "mysql" has successfully progressed.
reason: NewReplicaSetAvailable
status: "True"
type: Progressing
observedGeneration: 1
readyReplicas: 1
replicas: 1
updatedReplicas: 1

Answer 1

You should use the Cloud SQL proxy and add it as a sidecar to your application making queries to the Cloud SQL instance. Google has a suggested best practice found here.