14. Kubernetes Labels, Selectors, and Annotations

Опубликовано: 10 Октябрь 2024
на канале: iMustLearn

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** Example:1 **
vi my-nginx-label.yaml

apiVersion: v1
kind: Pod
metadata:
name: my-nginx-label-pod
labels:
my-web-server: nginx-dev
env: development
spec:
containers:
name: my-nginx-label-container
image: nginx
ports:
containerPort: 80

kubectl create -f my-nginx-label.yaml

kubectl get pods

kubectl get pod --show-labels

kubectl get pods -l env=development

kubectl label pod my-nginx-label-pod my-app=my-application

kubectl get pod --show-labels

kubectl label pod my-nginx-label-pod my-app=my-nginx-server --overwrite

kubectl get pods --show-labels

kubectl get pods --field-selector status.phase=Running
kubectl get pods --field-selector status.phase!=Running

kubectl get pods --field-selector status.phase=Running,metadata.namespace=default

kubectl get pods --field-selector status.phase=Running,metadata.namespace=default -L env

** Example:2 **
vi my-nginx-annotation.yaml

apiVersion: v1
kind: Pod
metadata:
name: my-nginx-annotation-pod
annotations:
developer: [email protected]
spec:
containers:
name: my-nginx-annotation-container
image: nginx
ports:
containerPort: 80

kubectl create -f my-nginx-annotation.yaml
kubectl describe pod my-nginx-annotation-pod