mirror of
https://github.com/kubevela/kubevela.git
synced 2026-05-17 23:07:34 +00:00
75 lines
2.0 KiB
Markdown
75 lines
2.0 KiB
Markdown
---
|
|
title: Labels and Annotations
|
|
---
|
|
|
|
We will introduce how to add labels and annotations to your Application.
|
|
|
|
## List Traits
|
|
|
|
```bash
|
|
$ kubectl get trait -n vela-system
|
|
NAME APPLIES-TO DESCRIPTION
|
|
annotations ["webservice","worker"] Add annotations for your Workload.
|
|
cpuscaler ["webservice","worker"] configure k8s HPA with CPU metrics for Deployment
|
|
ingress ["webservice","worker"] Configures K8s ingress and service to enable web traffic for your service. Please use route trait in cap center for advanced usage.
|
|
labels ["webservice","worker"] Add labels for your Workload.
|
|
scaler ["webservice","worker"] Configures replicas for your service by patch replicas field.
|
|
sidecar ["webservice","worker"] inject a sidecar container into your app
|
|
```
|
|
|
|
You can use `label` and `annotations` traits to add labels and annotations for your workload.
|
|
|
|
## Apply Application
|
|
|
|
Let's use `label` and `annotations` traits in your Application.
|
|
|
|
```shell
|
|
# myapp.yaml
|
|
apiVersion: core.oam.dev/v1beta1
|
|
kind: Application
|
|
metadata:
|
|
name: myapp
|
|
spec:
|
|
components:
|
|
- name: express-server
|
|
type: webservice
|
|
properties:
|
|
image: crccheck/hello-world
|
|
port: 8000
|
|
traits:
|
|
- type: labels
|
|
properties:
|
|
"release": "stable"
|
|
- type: annotations
|
|
properties:
|
|
"description": "web application"
|
|
```
|
|
|
|
Apply this Application.
|
|
|
|
```shell
|
|
kubectl apply -f myapp.yaml
|
|
```
|
|
|
|
Check the workload has been created successfully.
|
|
|
|
```bash
|
|
$ kubectl get deployments
|
|
NAME READY UP-TO-DATE AVAILABLE AGE
|
|
express-server 1/1 1 1 15s
|
|
```
|
|
|
|
Check the `labels` trait.
|
|
|
|
```bash
|
|
$ kubectl get deployments express-server -o jsonpath='{.spec.template.metadata.labels}'
|
|
{"app.oam.dev/component":"express-server","release": "stable"}
|
|
```
|
|
|
|
Check the `annotations` trait.
|
|
|
|
```bash
|
|
$ kubectl get deployments express-server -o jsonpath='{.spec.template.metadata.annotations}'
|
|
{"description":"web application"}
|
|
```
|