istio

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apiVersion: security.istio.io/v1beta1
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kind: AuthorizationPolicy
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metadata:
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  name: httpbin
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  namespace: foo
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spec:
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  selector:
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    matchLabels:
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      app: httpbin
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      version: v1
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  rules:
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    - from:
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        - source:
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            principals: ["*"]
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        - source:
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            principals: ["*/ns/foo/sa/rule[0]-from[1]-principal[0]", "*bar/ns/foo/sa/rule[0]-from[1]-principal[1]"]