K8S Yaml配置用yq命令修改值

通常k8s的yaml会有多个kind块，分别用"---"分隔，yq --doc 0没有这个参数，如果需要修改下面文档，HPA中minReplicas的值，那我们要如何处理呢？

yq -i 'select(di == 1).spec.minReplicas = "3"' depleyment.yaml

select(di == 1),这个就是yaml中的第二个kind块，如果需要改svc，就把di的值改成2就可以了

# Deployment
apiVersion: apps/v1
kind: Deployment
metadata:
  name: apigateway
  namespace: basic
spec:
  replicas: 1
  selector:
    matchLabels:
      app: apigateway
      version: v1
  template:
    metadata:
      labels:
        app: apigateway
        version: v1
    spec:
      imagePullSecrets:
        - name: harbor.vhsoft.cn
      containers:
        - image: apigateway:V1.0
          imagePullPolicy: IfNotPresent
          name: apigateway

---
# HPA
apiVersion: autoscaling/v2
kind: HorizontalPodAutoscaler
metadata:
  name: apigateway
  namespace: basic
spec:
  scaleTargetRef:
    apiVersion: apps/v1
    kind: Deployment
    name: apigateway
  minReplicas: 1
  maxReplicas: 3

---
# SVC
apiVersion: v1
kind: Service
metadata:
  name: apigateway
  namespace: basic
spec:
  ports:
    - name: http
      port: 8080 # SVC 暴露的端口
  selector: # pod 选择器
    app: apigateway