controllers • Pluggable cloud providers • Container runtime interface (CRI) enhancements ## CustomResourceDefinition(CRD) ## • What CRD provides • Very flexible way to extend managed resource into a current 1.7 ## Example of CRD and Resource Item apiVersion: apiextensions.k8s.io/v1beta1 kind: CustomResourceDefinition metadata: # name must match the spec fields below, and be in the form: .

• Manage resource to final state continually • kube-apiserver oriented programming • CustomResourceDefinition (CRD) • Built on Kubernetes APIs • Kubernetes repo support • Agile, flexible and convenient

创建 crd vi 1-crd.yaml ## IngressRoute apiVersion: apiextensions.k8s.io/v1beta1 kind: CustomResourceDefinition metadata: name: ingressroutes.traefik.container.us spec: scope: Namespaced group: singular: ingressroute --- ## IngressRouteTCP apiVersion: apiextensions.k8s.io/v1beta1 kind: CustomResourceDefinition metadata: name: ingressroutetcps.traefik.container.us spec: scope: Namespaced singular: ingressroutetcp --- ## Middleware apiVersion: apiextensions.k8s.io/v1beta1 kind: CustomResourceDefinition metadata: name: middlewares.traefik.container.us spec: scope: Namespaced group:

Kubernetes: Ok 1.14+ (v1.14.10-gke.27) [linux/amd64] Kubernetes APIs: ["CustomResourceDefinition", "cilium/v2::CiliumClusterwideNetworkPolicy", "cilium/v2::CiliumEndpoint", "cilium/v pod to pod connectivity on Layer 3 and 4. An extension to NetworkPolicy in the form of a CustomResourceDefinition which extends policy control to add: Layer 7 policy enforcement on ingress and egress for support marked as beta. The extended CiliumNetworkPolicy format which is available as a CustomResourceDefinition which supports specification of policies at Layers 3-7 for both ingress and egress. The

to pod connectivity on Layer 3 and 4. - An extension to NetworkPolicy in the form of a CustomResourceDefinition which extends policy control to add: ☐ Layer 7 policy enforcement on ingress and egress support marked as beta. - The extended CiliumNetworkPolicy format which is available as a CustomResourceDefinition which supports specification of policies at Layers 3-7 for both ingress and egress. It 1.10, 1.11, 1.12, 1.13, 1.14, 1.15, 1.16 • networking.k8s.io/v1 cilium.io/v2 has a CustomResourceDefinition # Troubleshooting ## V erifying the installation Check the status of the DaemonSet

links ## Controllers, Operators? What are those? apiVersion: apiextensions.k8s.io/v1 kind: CustomResourceDefinition metadata: name: crontabs.stable.example.com spec: group: stable.example.com versions: alidation rules - Common Expression Language (CEL) apiVersion: apiextensions.k8s.io/v1 kind: CustomResourceDefinition x-kubernetes-validations: - rule: "self.minReplicas <= self.maxReplicas"

Kubernetes: Ok 1.14+ (v1.14.10-gke.27) [linux/amd64] Kubernetes APIs: ["CustomResourceDefinition", "cilium/v2::CiliumClusterwideNetworkPolicy", "cilium/v2::CiliumEndpoint", "cilium/v pod to pod connectivity on Layer 3 and 4. An extension to NetworkPolicy in the form of a CustomResourceDefinition which extends policy control to add: Layer 7 policy enforcement on ingress and egress for support marked as beta. The extended CiliumNetworkPolicy format which is available as a CustomResourceDefinition which supports specification of policies at Layers 3-7 for both ingress and egress. The

need to match with that of the policy. The CiliumLocalRedirectPolicy is configured as a CustomResourceDefinition. There are two types of Local Redirect Policies supported. When traffic for a Kubernetes Kubernetes: Ok 1.14+ (v1.14.10-gke.27) [linux/amd64] Kubernetes APIs: ["CustomResourceDefinition", "cilium/v2::CiliumClusterwideNetworkPolicy", "cilium/v2::CiliumEndpoint", "cilium/v pod to pod connectivity on Layer 3 and 4. An extension to NetworkPolicy in the form of a CustomResourceDefinition which extends policy control to add: Layer 7 policy enforcement on ingress and egress for

need to match with that of the policy. The CiliumLocalRedirectPolicy is configured as a CustomResourceDefinition. There are two types of Local Redirect Policies supported. When traffic for a Kubernetes Kubernetes: Ok 1.14+ (v1.14.10-gke.27) [linux/amd64] Kubernetes APIs: ["CustomResourceDefinition", "cilium/v2::CiliumClusterwideNetworkPolicy", "cilium/v2::CiliumEndpoint", "cilium/v pod to pod connectivity on Layer 3 and 4. An extension to NetworkPolicy in the form of a CustomResourceDefinition which extends policy control to add: Layer 7 policy enforcement on ingress and egress for

resolving: my-operator.v1.0.1 resource: group: apiextensions.k8s.io kind: CustomResourceDefinition OpenShift Container Platform 4.14 Operator 32 其他 其他资源 源 多租户和 Operator 共处 允许非集群管理员安装 Operator (OLM) 会在不同的命名空间中多次安装 Operator。其中一个限制是 Operator 的 API 版本必须 相同。 Operator 是控制平面的扩展，因为它们使用了 CustomResourceDefinition 对象 (CRD)，它们是 Kubernetes 中的全局资源。一个 Operator 的不同主版本通常具有不兼容的 CRD。这使得它们不兼容， 可以在集群中的不同命名空间中安装。 指定自定义对象可用于某一个项目 (Namespaced) 还是集群中的所有项目 (Cluster)。 apiVersion: apiextensions.k8s.io/v1 1 kind: CustomResourceDefinition metadata: name: crontabs.stable.example.com 2 spec: group: stable.example.com 3