Create Containers

Updated at: 2025-11-19 11:28:25

In Kubernetes (K8s), containers are the fundamental units for building and running applications. A container is a lightweight, standalone, executable package that includes everything required to run an application—code, runtime, system tools, system libraries, and configuration. Containers are created and managed through container runtimes such as Docker, containerd, or CRI-O.

Deploy Containers Using Pods

In Kubernetes, containers are managed and executed inside Pods. A Pod is the smallest deployable unit in Kubernetes and may contain one or more tightly coupled containers. All containers within a Pod share the same network namespace and storage volumes.
If your container requires GPU resources, refer to GPU Resources.

Example

apiVersion: v1
kind: Pod
metadata:
  name: your-pod-name
  namespace: your-namespace
spec:
  imagePullSecrets:
    - name: ydyd-harbor-secret
  containers:
    - name: your-container-name
      image: your-image
      imagePullPolicy: IfNotPresent
      volumeMounts:
        - mountPath: /mnt/test
          name: your-volume-name
      command: ['/bin/bash', '-c', 'while true; do sleep 30; done']
  volumes:
    - name: your-volume-name
      persistentVolumeClaim:
        claimName: your-pvc-name

Manage Pods Using Deployments

In Kubernetes, a Deployment is a higher-level resource used for managing stateless applications. A Deployment provides a declarative way to define the desired state of an application and ensures that the actual cluster state matches that desired configuration. With Deployments, you can easily perform rollout, scaling, updates, and rollbacks. n real-world scenarios, Deployments are commonly used to manage Pods.

Example

apiVersion: apps/v1
kind: Deployment
metadata:
  name: your-deploy-name
  namespace: your-namespace
spec:
  replicas: 1
  selector:
    matchLabels:
      app: wedding-ai-api
  template:
    metadata:
      labels:
        app: wedding-ai-api
    spec:
      imagePullSecrets:
      - name: ydyd-harbor-secret
      containers:
        - name: your-container-name
          image: your-image
          imagePullPolicy: IfNotPresent
          volumeMounts:
            - mountPath: /mnt/test
              name: your-volume-name
          command: ['/bin/bash', '-c', 'while true; do sleep 30; done']
      volumes:
        - name: your-volume-name
          persistentVolumeClaim:
            claimName: your-pvc-name