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1.4.3.2. 协调频率 Helm 频道

1.4.3.2. 协调频率 Helm 频道

每 15 分钟，订阅 operator 将当前部署 Helm chart 的哈希值与源仓库的哈希值进行比较。更改被应用到目标集群。资源协调的频率会影响其他应用程序部署和更新的性能。

例如，如果存在数百个应用程序订阅，并且您希望更频繁地协调所有订阅，则协调的响应时间会较慢。

根据应用程序的 Kubernetes 资源，适当的协调频率可以提高性能。

Off：不自动协调部署的资源。Subscription 自定义资源的更改会启动协调。您可以添加或更新标签或注解。
Low ：订阅 operator 每小时将当前部署的哈希值与源存储库的哈希进行比较，并在发生更改时对目标集群应用更改。
Medium：这是默认设置。订阅 operator 每 15 分钟将当前部署的哈希值与源存储库的哈希进行比较，并在发生更改时对目标集群应用更改。
High ：订阅 operator 每 2 分钟将当前部署的哈希值与源存储库的哈希进行比较，并在有更改时对目标集群应用更改。

您可以使用订阅引用的 Channel 自定义资源中的 apps.open-cluster-management.io/reconcile-rate 注解进行设置。请参阅以下 helm-channel 示例：

请参阅以下 helm-channel 示例：

apiVersion: apps.open-cluster-management.io/v1
kind: Channel
metadata:
  name: helm-channel
  namespace: sample
  annotations:
    apps.open-cluster-management.io/reconcile-rate: low
spec:
  type: HelmRepo
  pathname: <Helm repo URL>
---
apiVersion: apps.open-cluster-management.io/v1
kind: Subscription
metadata:
  name: helm-subscription
spec:
  channel: sample/helm-channel
  name: nginx-ingress
  packageOverrides:
  - packageName: nginx-ingress
    packageAlias: nginx-ingress-simple
    packageOverrides:
    - path: spec
      value:
        defaultBackend:
          replicaCount: 3
  placement:
    local: true

apiVersion: apps.open-cluster-management.io/v1
kind: Channel
metadata:
  name: helm-channel
  namespace: sample
  annotations:
    apps.open-cluster-management.io/reconcile-rate: low
spec:
  type: HelmRepo
  pathname: <Helm repo URL>
---
apiVersion: apps.open-cluster-management.io/v1
kind: Subscription
metadata:
  name: helm-subscription
spec:
  channel: sample/helm-channel
  name: nginx-ingress
  packageOverrides:
  - packageName: nginx-ingress
    packageAlias: nginx-ingress-simple
    packageOverrides:
    - path: spec
      value:
        defaultBackend:
          replicaCount: 3
  placement:
    local: true

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在本例中，所有使用 sample/helm-channel 的订阅都会被分配一个 low 协调频率。

无论频道中的 reconcile-rate 设置是什么，订阅都可以通过在 Subscription 自定义资源中指定 apps.open-cluster-management.io/reconcile-rate: off 注解来关闭自动协调，如下例所示：

apiVersion: apps.open-cluster-management.io/v1
kind: Channel
metadata:
  name: helm-channel
  namespace: sample
  annotations:
    apps.open-cluster-management.io/reconcile-rate: high
spec:
  type: HelmRepo
  pathname: <Helm repo URL>
---
apiVersion: apps.open-cluster-management.io/v1
kind: Subscription
metadata:
  name: helm-subscription
  annotations:
    apps.open-cluster-management.io/reconcile-rate: "off"
spec:
  channel: sample/helm-channel
  name: nginx-ingress
  packageOverrides:
  - packageName: nginx-ingress
    packageAlias: nginx-ingress-simple
    packageOverrides:
    - path: spec
      value:
        defaultBackend:
          replicaCount: 3
  placement:
    local: true

apiVersion: apps.open-cluster-management.io/v1
kind: Channel
metadata:
  name: helm-channel
  namespace: sample
  annotations:
    apps.open-cluster-management.io/reconcile-rate: high
spec:
  type: HelmRepo
  pathname: <Helm repo URL>
---
apiVersion: apps.open-cluster-management.io/v1
kind: Subscription
metadata:
  name: helm-subscription
  annotations:
    apps.open-cluster-management.io/reconcile-rate: "off"
spec:
  channel: sample/helm-channel
  name: nginx-ingress
  packageOverrides:
  - packageName: nginx-ingress
    packageAlias: nginx-ingress-simple
    packageOverrides:
    - path: spec
      value:
        defaultBackend:
          replicaCount: 3
  placement:
    local: true

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在本例中，helm-subscription 部署的资源永远不会自动协调，即使 reconcile-rate 在频道中被设置为 high。

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1.4.3.2. 协调频率 Helm 频道

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