# Configuration migrations
This document describes breaking changes in the configuration file format between Constellation releases.
## Migrating from CLI versions before 2.3
- The `sshUsers` field was deprecated in v2.2 and has been removed from the configuration in v2.3.
As an alternative for SSH, check the workflow section [Connect to nodes](../workflows/troubleshooting.md#connect-to-nodes).
- The `image` field for each cloud service provider has been replaced with a global `image` field. Use the following mapping to migrate your configuration:
<details>
<summary>Show all</summary>
| CSP | old image | new image |
| ----- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------- |
| AWS | `ami-06b8cbf4837a0a57c` | `v2.2.2` |
| AWS | `ami-02e96dc04a9e438cd` | `v2.2.2` |
| AWS | `ami-028ead928a9034b2f` | `v2.2.2` |
| AWS | `ami-032ac10dd8d8266e3` | `v2.2.1` |
| AWS | `ami-032e0d57cc4395088` | `v2.2.1` |
| AWS | `ami-053c3e49e19b96bdd` | `v2.2.1` |
| AWS | `ami-0e27ebcefc38f648b` | `v2.2.0` |
| AWS | `ami-098cd37f66523b7c3` | `v2.2.0` |
| AWS | `ami-04a87d302e2509aad` | `v2.2.0` |
| Azure | `/subscriptions/0d202bbb-4fa7-4af8-8125-58c269a05435/resourceGroups/constellation-images/providers/Microsoft.Compute/galleries/Constellation/images/constellation/versions/2.2.2` | `v2.2.2` |
| Azure | `/subscriptions/0d202bbb-4fa7-4af8-8125-58c269a05435/resourceGroups/constellation-images/providers/Microsoft.Compute/galleries/Constellation_CVM/images/constellation/versions/2.2.2` | `v2.2.2` |
| Azure | `/subscriptions/0d202bbb-4fa7-4af8-8125-58c269a05435/resourceGroups/constellation-images/providers/Microsoft.Compute/galleries/Constellation/images/constellation/versions/2.2.1` | `v2.2.1` |
| Azure | `/subscriptions/0d202bbb-4fa7-4af8-8125-58c269a05435/resourceGroups/constellation-images/providers/Microsoft.Compute/galleries/Constellation_CVM/images/constellation/versions/2.2.1` | `v2.2.1` |
| Azure | `/subscriptions/0d202bbb-4fa7-4af8-8125-58c269a05435/resourceGroups/constellation-images/providers/Microsoft.Compute/galleries/Constellation/images/constellation/versions/2.2.0` | `v2.2.0` |
| Azure | `/subscriptions/0d202bbb-4fa7-4af8-8125-58c269a05435/resourceGroups/constellation-images/providers/Microsoft.Compute/galleries/Constellation_CVM/images/constellation/versions/2.2.0` | `v2.2.0` |
| Azure | `/subscriptions/0d202bbb-4fa7-4af8-8125-58c269a05435/resourceGroups/constellation-images/providers/Microsoft.Compute/galleries/Constellation/images/constellation/versions/2.1.0` | `v2.1.0` |
| Azure | `/subscriptions/0d202bbb-4fa7-4af8-8125-58c269a05435/resourceGroups/constellation-images/providers/Microsoft.Compute/galleries/Constellation_CVM/images/constellation/versions/2.1.0` | `v2.1.0` |
| Azure | `/subscriptions/0d202bbb-4fa7-4af8-8125-58c269a05435/resourceGroups/constellation-images/providers/Microsoft.Compute/galleries/Constellation/images/constellation/versions/2.0.0` | `v2.0.0` |
| Azure | `/subscriptions/0d202bbb-4fa7-4af8-8125-58c269a05435/resourceGroups/constellation-images/providers/Microsoft.Compute/galleries/Constellation_CVM/images/constellation/versions/2.0.0` | `v2.0.0` |
| GCP | `projects/constellation-images/global/images/constellation-v2-2-2` | `v2.2.2` |
| GCP | `projects/constellation-images/global/images/constellation-v2-2-1` | `v2.2.1` |
| GCP | `projects/constellation-images/global/images/constellation-v2-2-0` | `v2.2.0` |
| GCP | `projects/constellation-images/global/images/constellation-v2-1-0` | `v2.1.0` |
| GCP | `projects/constellation-images/global/images/constellation-v2-0-0` | `v2.0.0` |
</details>
- The `enforcedMeasurements` field has been removed and merged with the `measurements` field.
- To migrate your config containing a new image (`v2.3` or greater), remove the old `measurements` and `enforcedMeasurements` entries from your config and run `constellation fetch-measurements`
- To migrate your config containing an image older than `v2.3`, remove the `enforcedMeasurements` entry and replace the entries in `measurements` as shown in the example below:
```diff
measurements:
- 0: DzXCFGCNk8em5ornNZtKi+Wg6Z7qkQfs5CfE3qTkOc8=
+ 0:
+ expected: DzXCFGCNk8em5ornNZtKi+Wg6Z7qkQfs5CfE3qTkOc8=
+ warnOnly: true
- 8: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
+ 8:
+ expected: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
+ warnOnly: false
-enforcedMeasurements:
- - 8
```