deployment控制器yaml 部署nginx镜像 kubectl apply -f

deployment.YAML
##########################
##不支持tab缩进,空格缩进
##开头缩进2个空格
##字符后缩进1个空格，如冒号、逗号
##"---" 文件开始
##"#"注释

####示例
#####https://kubernetes.io/zh/docs/concepts/workloads/controllers/deployment/
#####deployment.yaml 格式如下#####

---------------------------控制器定义--------------------------
---
apiVersion: apps/v1 ###1版本号
kind: Deployment ###1资源类型

metadata: ###1资源元数据
name: web

spec: ###1资源规格
replicas: 3 ###2副本数

selector: ###2标签选择器 metadata.labels 一致
matchLables:
app: web

---------------------------被控对象--------------------------
template: ###2pod模板
metadata: ###3pod元数据
labels:
app: web
spec: ###3pod规格
containers: ###4容器配置
- name: web
image: nginx

#####service.yaml 格式如下#####

apiVersion: apps/v1 　　 ###1版本号
kind: Service　　　　 ###1资源类型

metadata: ###1资源元数据
name: web
spec: ###1资源规格
ports:
- port: 80 ###3 Service端口
protocol: TCP
targetPort: 80 ###3 镜像内服务端口；如nginx镜像端口80
selector: ###2标签选择器与Deployment中标签一致
app: web
type: NodePort ###2 Service 类型

https://kubernetes.io/docs/concepts/services-networking/service/

1)、####kubectl get pods

2)、############deployment.yaml
vi deployment.yaml
#####https://kubernetes.io/zh/docs/concepts/workloads/controllers/deployment/
#############
apiVersion: apps/v1
kind: Deployment
metadata:
name: web2
spec:
replicas: 3
selector:
matchLabels:
app: nginx2
template:nginx
metadata:
labels:
app: nginx2
spec:
containers:
- name: nginx
image: nginx
ports:
- containerPort: 80

3)、############kubectl apply -f deployment.yaml#####新建、更新
#########另一方式###kubectl create deployment web --image=nginx --replicas=3########新建

#####查看deployment.版本

4)、端口暴露

###########name、app 与deployment.yaml 一致
###https://kubernetes.io/docs/concepts/services-networking/service/
vi service.yaml
--------------------------------------------------------------------
apiVersion: v1
kind: Service
metadata:
name: web2
spec:
selector:
app: nginx2
ports:
- protocol: TCP
port: 80
targetPort: 80