Kubernetes 标签

https://kubernetes.io/docs/reference/kubernetes-api/labels-annotations-taints

节点标签#

kubernetes.io/ingress.class

label	demo	desc
k3s.io/hostname	node-3
k3s.io/internal-ip	10.10.1.1
kubernetes.io/arch	amd64	+v1.14
kubernetes.io/hostname	node-3
kubernetes.io/os	linux	+v1.14
node-role.kubernetes.io/`<role>`	true
node-role.kubernetes.io/master	true	Master node
node.kubernetes.io/instance-type	k3s
topology.kubernetes.io/region		+v1.17
topology.kubernetes.io/zone		+v1.17

# 设置 node role 为 worker
# role 名字任意
# value 不重要，主要是存在该 label
kubectl label node-2 node-role.kubernetes.io/worker=true

Deprecated#

label	demo	desc
beta.kubernetes.io/arch	amd64	!v1.14, -v1.18
beta.kubernetes.io/instance-type	k3s	!v1.17
beta.kubernetes.io/os	linux	!v1.14, -v1.18
failure-domain.beta.kubernetes.io/region		!v1.17
failure-domain.beta.kubernetes.io/zone		!v1.17

资源标签#

kind	annotation	demo	desc
StorageClass	storageclass.kubernetes.io/is-default-class	true	默认 StorageClass

应用标签#

label	example
app.kubernetes.io/name	`mysql`
app.kubernetes.io/instance	`mysql-abcd`
app.kubernetes.io/version	`5.7`
app.kubernetes.io/component	`database`
app.kubernetes.io/part-of	`ghost`
app.kubernetes.io/managed-by	`helm`

podAntiAffinity:
  preferredDuringSchedulingIgnoredDuringExecution:
    - weight: 100
      podAffinityTerm:
        labelSelector:
          matchLabels:
            app.kubernetes.io/component: prometheus
            app.kubernetes.io/instance: kube-prometheus
            app.kubernetes.io/name: kube-prometheus
        topologyKey: kubernetes.io/hostname

Helm 标签#

label	example
app.kubernetes.io/managed-by	Helm

# 资源 label
labels:
  app.kubernetes.io/component: controller
  app.kubernetes.io/instance: ingress-nginx
  app.kubernetes.io/managed-by: Helm
  app.kubernetes.io/name: ingress-nginx
  app.kubernetes.io/version: 0.35.0
  helm.sh/chart: ingress-nginx-2.16.0

# selector label
matchLabels:
  app.kubernetes.io/component: controller
  app.kubernetes.io/instance: ingress-nginx
  app.kubernetes.io/name: ingress-nginx

Helm 注解#

annotation	value	desc
meta.helm.sh/release-name	linkerd2
meta.helm.sh/release-namespace	linkerd