container_aria

my file learn about tech container (docker, podman, kubernetes)


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config map

config map

alt text

configuaration

example

apiVersion: v1
kind: ConfigMap
data:
  ENV: VALUE
metadata:
  name: configmap-name

# example
apiVersion: v1
kind: ConfigMap
metadata:
  name: nodejs-env-config
data:
  APPLICATION: My Cool Application
  VERSION: 1.0.0

---

apiVersion: apps/v1
kind: ReplicaSet
metadata:
  name: nodejs-env
spec:
  replicas: 3
  selector:
    matchLabels:
      name: nodejs-env
  template:
    metadata:
      name: nodejs-env
      labels:
        name: nodejs-env
    spec:
      containers:
        - name: nodejs-env
          image: khannedy/nodejs-env
          ports:
            - containerPort: 3000
          envFrom:
            - configMapRef:
                name: nodejs-env-config

---

apiVersion: v1
kind: Service
metadata:
  name: nodejs-env-service
spec:
  type: NodePort
  selector:
    name: nodejs-env
  ports:
    - port: 3000
      targetPort: 3000
      nodePort: 30001

command

kubectl get configmaps
kubectl describe configmap <name_configmap>
kubectl delete configmaps <name_configmap>