mirror of
https://github.com/kyverno/kyverno.git
synced 2025-03-05 23:46:56 +00:00
30 lines
1 KiB
Markdown
30 lines
1 KiB
Markdown
|
# Restrict use of `LoadBalancer` services
|
||
|
|
|
||
|
|
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.
|
||
|
|
|
||
|
|
This sample policy checks for any services of type `LoadBalancer`. Change `validationFailureAction` to `enforce` to block their creation.
|
||
|
|
|
||
|
|
## Policy YAML
|
||
|
|
|
||
|
|
[restrict_loadbalancer.yaml](more/restrict_loadbalancer.yaml)
|
||
|
|
|
||
|
|
```yaml
|
||
|
|
apiVersion: kyverno.io/v1
|
||
|
|
kind: ClusterPolicy
|
||
|
|
metadata:
|
||
|
|
name: no-loadbalancers
|
||
|
|
spec:
|
||
|
|
validationFailureAction: audit
|
||
|
|
rules:
|
||
|
|
- name: no-LoadBalancer
|
||
|
|
match:
|
||
|
|
resources:
|
||
|
|
kinds:
|
||
|
|
- Service
|
||
|
|
validate:
|
||
|
|
message: "Service of type LoadBalancer is not allowed."
|
||
|
|
pattern:
|
||
|
|
spec:
|
||
|
|
type: "!LoadBalancer"
|
||
|
|
```
|