# Change Detection

To react on Secret Changes there is a Change Adjustment Callback that can be defined. If such Callback is defined a new rollout of a Deployment gets triggered when the secret is changed by Vault-CRD. This will then inject the new secret value and a reload of the secret can be enforced (e.g. start of new application context lookup in Spring Boot).

All secret types support this Change Adjustment via the following yaml snippet:

```yaml
apiVersion: "koudingspawn.de/v1"
kind: Vault
metadata:
  [...]
spec:
  [...]
  changeAdjustmentCallback:
    type: deployment
    name: nginx
```

In this case the deployment nginx (same namespace as Vault resource) gets restarted when the secret was modified.

| Field | Description                                                                   |
| ----- | ----------------------------------------------------------------------------- |
| type  | Resource Type that should be updated (Currently only deployment is supported) |
| name  | Name of the Resource that should be updated (rollout redo)                    |


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