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added service account token generation step and formatted some yaml #3988

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added service account token generation step and formatted some yaml #3988

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39 changes: 18 additions & 21 deletions website/docs/cluster-management/managing-clusters-without-capi.mdx
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Original file line number Diff line number Diff line change
Expand Up @@ -36,14 +36,22 @@ kubectl create secret generic demo-01-kubeconfig \

Here's how to create a kubeconfig secret.

1. Create a new service account on the remote cluster:
1. Create a new service account on the remote cluster with a token:

```yaml
apiVersion: v1
kind: ServiceAccount
metadata:
name: demo-01
namespace: default
name: demo-01
namespace: default
---
apiVersion: v1
kind: Secret
metadata:
name: demo-01-token
annotations:
kubernetes.io/service-account.name: demo-01
type: kubernetes.io/service-account-token
```

2. Add RBAC permissions for the service account:
Expand All @@ -58,8 +66,8 @@ Here's how to create a kubeconfig secret.
name: impersonate-user-groups
subjects:
- kind: ServiceAccount
name: demo-01
namespace: default
name: demo-01
namespace: default
roleRef:
kind: ClusterRole
name: user-groups-impersonator
Expand All @@ -71,11 +79,11 @@ Here's how to create a kubeconfig secret.
name: user-groups-impersonator
rules:
- apiGroups: [""]
resources: ["users", "groups"]
verbs: ["impersonate"]
resources: ["users", "groups"]
verbs: ["impersonate"]
- apiGroups: [""]
resources: ["namespaces"]
verbs: ["get", "list"]
resources: ["namespaces"]
verbs: ["get", "list"]
```

</details>
Expand All @@ -87,18 +95,7 @@ Here's how to create a kubeconfig secret.
3. Retrieve the token from the service account. First, run this command to get the list of secrets of the service accounts:

```bash
kubectl get secrets --field-selector type=kubernetes.io/service-account-token
NAME TYPE DATA AGE
default-token-lsjz4 kubernetes.io/service-account-token 3 13d
demo-01-token-gqz7p kubernetes.io/service-account-token 3 99m
```

(`demo-01-token-gqz7p` is the secret that holds the token for `demo-01` service account.)

Then, run the following command to get the service account token:

```bash
TOKEN=$(kubectl get secret demo-01-token-gqz7p -o jsonpath={.data.token} | base64 -d)
TOKEN=$(kubectl get secret demo-01-token -o jsonpath={.data.token} | base64 -d)
```

4. Create a kubeconfig secret. We'll use a helper script to generate the kubeconfig, and then save it into `static-kubeconfig.sh`:
Expand Down