Deployment is an object that maintains a group of identical Pods. The following is how Deployment maintains Pods.
- Ensures that the Pods have the same configuration
- Monitors the health of the Pods
- Provides declarative updates for the Pods
Here's a sample Deployment configuration file.
apiVersion: apps/v1 kind: Deployment metadata: name: client-deployment spec: # replicas is used to specify the number of Pods we want to have running replicas: 1 # selector is used to tell Deployment which Pods we want it to maintain selector: matchLabels: component: web # template is used to tell Deployment to create Pods with this template (configuration) template: metadata: labels: component: web spec: containers: - name: client image: thealiilman/a-react-app ports: - containerPort: 3000