k8s之StatefulSet绑定headlessService实现域名解析
k8s学习之StatefulSet实现域名解析简单demo
·
一 StatefulSet
demo
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: web
namespace:
spec:
selector:
matchLabels:
app: nginx #必须匹配 .spec.template.metadata.labels
serviceName: "nginx" #声明它属于哪个Headless Service.
replicas: 1 #副本数
template:
metadata:
labels:
app: nginx # 必须配置 .spec.selector.matchLabels
spec:
terminationGracePeriodSeconds: 10
containers:
- name: nginx
image: nginx:latest
ports:
- containerPort: 80
name: web
二 HeadlessService
demo
apiVersion: v1
kind: Service
metadata:
name: nginx
labels:
app: nginx
spec:
ports:
- port: 80
name: web
clusterIP: None
selector:
app: nginx
三 测试
进入容器
kubectl exec web-0 -it bash
使用curl(不能用ping)
curl http://nginx.default
成功
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