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Help Center/ Cloud Container Engine/ FAQs/ Networking/ Network Configuration/ How Can I Achieve Compatibility Between Ingress's property and Kubernetes client-go?

How Can I Achieve Compatibility Between Ingress's property and Kubernetes client-go?

Updated on 2024-07-04 GMT+08:00

Scenario

The Kubernetes ingress structure does not contain the property attribute. Therefore, the ingress created by client-go through API calling does not contain the property attribute. CCE provides a solution to ensure compatibility with the Kubernetes client-go.

Solution

When using client-go to create an ingress instance, make the following declaration in annotation:

kubernetes.io/ingress.property: '[{"host":"test.com","path":"/test","matchmode":"STARTS_WITH"},{"host":"test.com","path":"/dw","matchmode":"EQUAL_TO"}]'

Matching rule: When a user calls the Kubernetes interface of CCE to create an ingress instance, CCE attempts to match the host and path fields in ingress rules. If the host and path fields in ingress rules are the same as those in annotation, CCE injects the property attribute to the path. The following is an example:

kind: Ingress
apiVersion: extensions/v1beta1
metadata:
  name: test
  namespace: default
  resourceVersion: '2904229'
  generation: 1
  labels:
    isExternal: 'true'
    zone: data
  annotations:
    kubernetes.io/ingress.class: cce
    kubernetes.io/ingress.property: '[{"host":"test.com","path":"/test","matchmode":"STARTS_WITH"},{"Path":"/dw","MatchMode":"EQUAL_TO"}]'
spec:
  rules:
     - host: test.com
       http:
        paths:
          - path: /ss
            backend:
              serviceName: zlh-test
              servicePort: 80
          - path: /dw
            backend:
              serviceName: zlh-test
              servicePort: 80

The format after conversion is as follows:

kind: Ingress
apiVersion: extensions/v1beta1
metadata:
  name: test
  namespace: default
  resourceVersion: '2904229'
  generation: 1
  labels:
    isExternal: 'true'
    zone: data
  annotations:
    kubernetes.io/ingress.class: cce
    kubernetes.io/ingress.property: '[{"host":"test.com","path":"/ss","matchmode":"STARTS_WITH"},{"host":"","path":"/dw","matchmode":"EQUAL_TO"}]'
spec:
  rules:
     - host: test.com
       http:
        paths:
          - path: /ss
            backend:
              serviceName: zlh-test
              servicePort: 80
            property:
              ingress.beta.kubernetes.io/url-match-mode: STARTS_WITH
          - path: /dw
            backend:
              serviceName: zlh-test
              servicePort: 80
Table 1 Descriptions of key parameters

Parameter

Type

Description

host

String

Domain name configuration.

If this parameter is not set, path is automatically matched.

path

String

Matching path.

ingress.beta.kubernetes.io/url-match-mode

String

Route matching policy. The values are as follows:

  • REGEX: indicates regular expression match.
  • STARTS_WITH: indicates prefix match.
  • EQUAL_TO: indicates exact match.

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