CODEWITHSUNDEEP
kubernetes
Abhi
Abhi

Reputation: 3

Is there anyone to get dynamic env value in seprate pod kubernetes k3s

apiVersion: v1
kind: ConfigMap
metadata:
  name: mongodb-config
data:
    mapConfig: |
      - dbName: dbName-database1
        label: Database1
      - dbName: dbName-database2
        label: Database2
      - dbName: dbName-database3
        label: Database3
      - dbName: dbName-database4
        label: Database4

---

apiVersion: apps/v1
kind: Deployment
metadata:
  name: backend-server
spec:
  replicas: 4
  selector:
    matchLabels:
      app: backend-server
  template:
    metadata:
      labels:
        app: backend-server
    spec:
      containers:
        - name: backend-server
          image: backend-server-image:latest
          imagePullPolicy: IfNotPresent
          env:
            - name: DB_NAME
              valueFrom:
                configMapKeyRef:
                  name: mongodb-config
                  key: mapConfig
          resources:
            requests:
              cpu: "250m"
            limits:
              cpu: "500m"
          ports:
            - containerPort: 3000

apiVersion: v1 kind: Service metadata:

name: backend-server-service spec: type: LoadBalancer selector: app: backend-server ports:

  • protocol: TCP port: 3000 targetPort: 3000

I have used the configMap but I got all the values in env is there any way that I can get the dbName unique in every pod

I got all the env but like I want dbName: dbName-database1 label: Database1

In the first pod rest like same for all

Upvotes: 0

Views: 62

Answers (1)

zori
zori

Reputation: 2260

Question: is there any way that I can get the dbName unique in every pod

I suggest you to create 4 different Deployments as the idea of Deployment(and in the end Pods) is to be exactly the same, but as you want to make it different, so you should have 4 different Deployments

Other way to minimize number of duplicated code is to use helm and create chart, because Kubernetes by default doesn't support dynamic values

Upvotes: 0

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