yq向yaml添加额外内容

Question

我尝试过多次不同的组合，但我无法使它工作。这是我的yq命令

yq -i e '(.spec.template.spec.containers[]|select(.name == "od-fe").image) = "abcd"

它应该替换成功的部署映像，但也会将template.spec.containers添加到服务中。下面是部署+服务yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  namespace: od
  name: od-fe
spec:
  replicas: 2
  selector:
    matchLabels:
      app: od-fe
  template:
    metadata:
      labels:
        app: od-fe
    spec:
      containers:
        - name: od-fe
          image: od-frontend:latest.  <<<replace here only
          imagePullPolicy: Always
          ports:
            - containerPort: 3000

---
apiVersion: v1
kind: Service
metadata:
  namespace: od
  name: od-fe-service
  labels:
    run: od-fe-service
spec:
  ports:
    - port: 3000
      targetPort: 3000
      protocol: TCP
  type: NodePort
  selector:
    app: od-fe

现在的问题是，服务也被改变成

apiVersion: v1
kind: Service
metadata:
  namespace: od
  name: od-fe-service
  labels:
    run: od-fe-service
spec:
  ports:
    - port: 3000
      targetPort: 3000
      protocol: TCP
  type: NodePort
  selector:
    app: od-fe
  template:
    spec:
      containers: []

Answer 1

解决这一问题的一种方法是在顶层包含一个select语句，以便只对Deployment类型执行操作。

yq e '(select(.kind == "Deployment").spec.template.spec.containers[]|select(.name == "od-fe").image) |= "abcd"' yaml

注意:如果您使用的是yq版本4.18.1或更高版本，则将the eval flag e is no longer needed作为默认操作。