How to deploy pods so that each worker node in the cluster runs one instance?

To deploy pods so that each worker node in the cluster runs a single instance, Kubernetes uses the DaemonSet object. DaemonSet ensures that one instance of a pod is running on each node.

Example of a DaemonSet manifest:

apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: example-daemonset
spec:
  selector:
    matchLabels:
      name: example-pod
  template:
    metadata:
      labels:
        name: example-pod
    spec:
      containers:
      - name: example-container
        image: nginx

When such a DaemonSet is applied, Kubernetes will create one pod on each worker node of the cluster.