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Clarify differences between example configs for CA issuer and cluster CA issuer #1516

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Clarify differences between example configs for CA issuer and cluster CA issuer #1516

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10 changes: 4 additions & 6 deletions content/docs/configuration/selfsigned.md
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Expand Up @@ -117,14 +117,10 @@ spec:
secretName: root-secret
```

Alternatively, if you are looking to use `ClusterIssuer` for signing `Certificates` anywhere in your cluster with the `SelfSigned` `Certificate` CA, use the YAML below (slight modification to the last step):
Alternatively, if you are looking to use `ClusterIssuer` for signing `Certificates` anywhere in your cluster with the `SelfSigned` `Certificate` CA, use the YAML below (slight modification):

```yaml
apiVersion: v1
kind: Namespace
metadata:
name: sandbox
---
# `sandbox` namespace is no longer needed.
apiVersion: cert-manager.io/v1
kind: ClusterIssuer
metadata:
Expand All @@ -136,6 +132,7 @@ apiVersion: cert-manager.io/v1
kind: Certificate
metadata:
name: my-selfsigned-ca
# Create CA root secret in `cert-manager` namespace instead of `sandbox` namespace.
namespace: cert-manager
spec:
isCA: true
Expand All @@ -155,6 +152,7 @@ metadata:
name: my-ca-issuer
spec:
ca:
# `ClusterIssuer` resource is not namespaced, so `secretName` is assumed to reference secret in `cert-manager` namespace.
secretName: root-secret
```
The "selfsigned-issuer" `ClusterIssuer` is used to issue the Root CA Certificate. Then, "my-ca-issuer" `ClusterIssuer` is used to issue but also sign certificates using the newly created Root CA `Certificate`, which is what you will use for future certificates cluster-wide.
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