Skip to main content

DaemonSets

Run this task on once on every node.

A Daemonset is similar to a ReplicaSets. It has a nested pod spec template for container, and selectors to link the daemonset to the pod.

DaemonSets, behind the scenes, iterate the node list and set nodeAffinity on each required pod. Previous (<= 1.12) they set nodeName instead.

Template​

apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: ${RESOURCE_NAME}
  labels: &app_labels
    name: ${RESOURCE_NAME}
spec:
  selector:
    matchLabels:
      <<: *app_labels
  template:
    metadata:
      name: ${RESOURCE_NAME}
      labels:
        <<: *app_labels
    spec:
      containers:
        - name: ${RESOURCE_NAME}-container
          image: ${RESOURCE_NAME}:latest
          # command: ["sleep"]
          # args: ["3600"]
      # updateStrategy:
---