Kustomize：修补以相同名称开头的多个资源

huangapple
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英文:

Kustomize: Patch multiple resources that starts with same name

问题

我想要对以相同的namePrefix开头而不是针对特定资源进行多个部署的修补。

例如，我有两个nginx部署deployment-v1.yaml和deployment-v2.yaml。我想要使用**nginx-**前缀来修补这两个部署。

deployment-v1.yaml

  1. apiVersion: apps/v1
  2. kind: Deployment
  3. metadata:
  4.   name: nginx-v1
  5.   labels:
  6.     app: web
  7. spec:
  8.   selector:
  9.     matchLabels:
  10.       app: web
  11.   replicas: 5
  12.   strategy:
  13.     type: RollingUpdate
  14.   template:
  15.     metadata:
  16.       labels:
  17.         app: web
  18.     spec:
  19.       containers:
  20.       - name: nginx
  21.         image: nginx
  22.         ports:
  23.         - containerPort: 80

deployment-v2.yaml

  1. apiVersion: apps/v1
  2. kind: Deployment
  3. metadata:
  4.   name: nginx-deployment
  5.   labels:
  6.     app: web
  7. spec:
  8.   selector:
  9.     matchLabels:
  10.       app: web
  11.   replicas: 5
  12.   strategy:
  13.     type: RollingUpdate
  14.   template:
  15.     metadata:
  16.       labels:
  17.         app: web
  18.     spec:
  19.       containers:
  20.       - name: nginx
  21.         image: nginx
  22.         resources:
  23.           limits:
  24.             memory: 200Mi
  25.           requests:
  26.             cpu: 100m
  27.             memory: 200Mi
  28.         ports:
  29.         - containerPort: 80

现在，我想要使用通用的overlay-patch覆盖这两个部署。我尝试像这样做。

overlay.yaml

  1. apiVersion: apps/v1
  2. kind: Deployment
  3. metadata:
  4.   namePrefix: nginx-
  5. spec:
  6.   replicas: 10

kustomization.yml

  1. apiVersion: kustomize.config.k8s.io/v1beta1
  2. kind: Kustomization
  3. resources:
  4.   - deployment-v1.yaml
  5.   - deployment-v2.yaml
  6. patchesStrategicMerge:
  7.   - overlay.yaml

但它不起作用，因为它期望一个名称与目标匹配，完全忽略了namePrefix。任何帮助都将不胜感激。

英文:

I want to patch multiple deployments that starts with same namePrefix instead of targeting specific resource.

For example, I have 2 deployments of nginx deployment-v1.yaml and deployment-v2.yaml. I want to patch both the deployment using nginx- prefix.

deployment-v1.yaml

  1. apiVersion: apps/v1
  2. kind: Deployment
  3. metadata:
  4.   name: nginx-v1
  5.   labels:
  6.     app: web
  7. spec:
  8.   selector:
  9.     matchLabels:
  10.       app: web
  11.   replicas: 5
  12.   strategy:
  13.     type: RollingUpdate
  14.   template:
  15.     metadata:
  16.       labels:
  17.         app: web
  18.     spec:
  19.       containers:
  20.        —name: nginx
  21.           image: nginx
  22.           ports:
  23.            —containerPort: 80

deployment-v2.yaml

  1. apiVersion: apps/v1
  2. kind: Deployment
  3. metadata:
  4.   name: nginx-deployment
  5.   labels:
  6.     app: web
  7. spec:
  8.   selector:
  9.     matchLabels:
  10.       app: web
  11.   replicas: 5
  12.   strategy:
  13.     type: RollingUpdate
  14.   template:
  15.     metadata:
  16.       labels:
  17.         app: web
  18.     spec:
  19.       containers:
  20.        —name: nginx
  21.           image: nginx
  22.           resources:
  23.             limits:
  24.               memory: 200Mi
  25.             requests:
  26.               cpu: 100m
  27.               memory: 200Mi
  28.           ports:
  29.            —containerPort: 80

Now I want to overlay both the deployments with common overlay-patch. I am trying something like this.

overlay.yaml

  1. apiVersion: apps/v1
  2. kind: Deployment
  3. metadata:
  4.   namePrefix: nginx-
  5. spec:
  6.   replicas: 10

kustomization.yml

  1. apiVersion: kustomize.config.k8s.io/v1beta1
  2. kind: Kustomization
  3. resources:
  4.   - deployment-v1.yaml
  5.   - deployment-v2.yaml
  6. patchesStrategicMerge:
  7.   - overlay.yaml

But it is not working as it is expecting a name to match the target and totally ignoring namePrefix. Any help is appreciated.

答案1

得分: 1

你可以使用补丁中的 target 属性来将补丁应用于多个资源。根据您的示例（在我评论中指出错误后进行修正），我们可以编写一个像这样的 kustomization.yaml：

  1. apiVersion: kustomize.config.k8s.io/v1beta1
  2. kind: Kustomization
  3. resources:
  4. - deployment-v1.yaml
  5. - deployment-v2.yaml
  7. patches:
  8.   - target:
  9.       kind: Deployment
  10.     patch: |
  11.       apiVersion: apps/v1
  12.       kind: Deployment
  13.       metadata:
  14.         name: this_value_is_ignored
  15.       spec:
  16.         replicas: 10

target 属性控制了此补丁将应用于哪些资源。使用上述配置运行 kustomize build 会得到以下结果：

  1. apiVersion: apps/v1
  2. kind: Deployment
  3. metadata:
  4.   labels:
  5.     app: web
  6.   name: nginx-deployment
  7. spec:
  8.   replicas: 10
  9. .
  10. .
  11. .

以及：

  1. apiVersion: apps/v1
  2. kind: Deployment
  3. metadata:
  4.   labels:
  5.     app: web
  6.   name: nginx-v1
  7. spec:
  8.   replicas: 10
  9. .
  10. .
  11. .

上述配置将会将补丁应用于 所有 在您的 kustomization 中的部署。如果您想将补丁限制为仅适用于名称前缀匹配的部署，您可以编写如下：

  1. apiVersion: kustomize.config.k8s.io/v1beta1
  2. kind: Kustomization
  3. resources:
  4. - deployment-v1.yaml
  5. - deployment-v2.yaml
  7. patches:
  8.   - target:
  9.       kind: Deployment
  10.       name: nginx.*
  11.     patch: |
  12.       apiVersion: apps/v1
  13.       kind: Deployment
  14.       metadata:
  15.         name: this_value_is_ignored
  16.       spec:
  17.         replicas: 10

请注意，name 模式是正则表达式，而不是 shell 风格的通配符。

英文:

You can apply a patch to multiple resources using the target attribute in a patch. Given your examples (after fixing the errors I pointed out in my comment), we can write a kustomization.yaml like this:

  1. apiVersion: kustomize.config.k8s.io/v1beta1
  2. kind: Kustomization
  3. resources:
  4. - deployment-v1.yaml
  5. - deployment-v2.yaml
  7. patches:
  8.   - target:
  9.       kind: Deployment
  10.     patch: |
  11.       apiVersion: apps/v1
  12.       kind: Deployment
  13.       metadata:
  14.         name: this_value_is_ignored
  15.       spec:
  16.         replicas: 10

The target attribute controls to what resources this patch will apply. With the above configuration, running kustomize build results in:

  1. apiVersion: apps/v1
  2. kind: Deployment
  3. metadata:
  4.   labels:
  5.     app: web
  6.   name: nginx-deployment
  7. spec:
  8.   replicas: 10
  9. .
  10. .
  11. .

and:

  1. apiVersion: apps/v1
  2. kind: Deployment
  3. metadata:
  4.   labels:
  5.     app: web
  6.   name: nginx-v1
  7. spec:
  8.   replicas: 10
  9. .
  10. .
  11. .

The above configuration would apply the patch to all deployments in your kustomization. If you wanted to limit the patching to only deployments matching a specific name prefix, you could write:

  1. apiVersion: kustomize.config.k8s.io/v1beta1
  2. kind: Kustomization
  3. resources:
  4. - deployment-v1.yaml
  5. - deployment-v2.yaml
  7. patches:
  8.   - target:
  9.       kind: Deployment
  10.       name: nginx.*
  11.     patch: |
  12.       apiVersion: apps/v1
  13.       kind: Deployment
  14.       metadata:
  15.         name: this_value_is_ignored
  16.       spec:
  17.         replicas: 10

Note that the name pattern is regular expression, not a shell-style glob.

huangapple
  • 本文由 发表于 2023年7月13日 18:13:29
  • 转载请务必保留本文链接：https://go.coder-hub.com/76678256.html
  • amazon-eks
  • amazon-web-services
  • kubectl
  • kubernetes
  • kustomize
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