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c52f07b615
* new samples; updates * typos * add policy to restrict LoadBalancer * correct sample numbering * fix typos
29 lines
1 KiB
Markdown
29 lines
1 KiB
Markdown
# Restrict use of `LoadBalancer` services
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A Kubernetes service of type `LoadBalancer` typically requires the use of a cloud provider to realize the infrastructure on the backend. Doing so has the side effect of increased cost and potentially bypassing existing `Ingress` resource(s) which are preferred methods of issuing traffic to a Kubernetes cluster. The use of Services of type `LoadBalancer` should therefore be carefully controlled or restricted across the cluster.
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This sample policy checks for any services of type `LoadBalancer`. Change `validationFailureAction` to `enforce` to block their creation.
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## Policy YAML
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[restrict_loadbalancer.yaml](more/restrict_loadbalancer.yaml)
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```yaml
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apiVersion: kyverno.io/v1
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kind: ClusterPolicy
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metadata:
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name: no-loadbalancers
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spec:
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validationFailureAction: audit
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rules:
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- name: no-LoadBalancer
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match:
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resources:
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kinds:
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- Service
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validate:
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message: "Service of type LoadBalancer is not allowed."
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pattern:
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spec:
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type: "!LoadBalancer"
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```
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