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+---
+layout: default
+title: Security configuration versioning
+parent: Configuration
+nav_order: 27
+---
+
+# Security Configuration Versioning and Rollback API
+**Introduced 3.3**
+{: .label .label-purple }
+
+The Security Configuration Versioning and Rollback API provides version control for OpenSearch security configurations, enabling administrators to track changes, maintain audit trails, and restore previous configurations when needed.
+
+This API automatically creates versions when security configurations change, allowing you to track the complete history of security configuration modifications, view detailed information about any previous version, and roll back to any previous configuration version, thus maintaining operational safety.
+
+## How versioning works
+
+The system automatically creates a new version when a security configuration change is detected, the change differs from the most recent saved version, and an administrator makes modifications through supported APIs.
+
+Each version contains a version ID (unique identifier such as `v1`, `v2`), a configuration snapshot (complete security configuration at the time of creation), a timestamp indicating when the version was created, and user information identifying who made the change.
+
+A new version is created **only when a change is detected** compared to the latest saved version. This prevents redundant versions and ensures meaningful version history.
+
+## Enabling versioning
+
+To use the security configuration versioning, you must enable it in your OpenSearch configuration. Add the following setting to your `opensearch.yml` configuration file:
+
+```yaml
+plugins.security.configurations_versions.enabled: true
+```
+
+Optionally, you can control the number of retained versions by specifying the following setting:
+
+```yaml
+plugins.security.config_version.retention_count: 10
+```
+
+The default retention count is <!-- add default number of versions --> versions, with a valid range of <!-- add the range for the number of versions --> versions. When the retention limit is reached, <!-- what happens? For example, "the oldest versions are automatically removed to make space for new ones." -->
+
+After modifying `opensearch.yml`, restart your OpenSearch cluster for the changes to take effect. For more information, see [Experimental feature flags]({{site.url}}{{site.baseurl}}/install-and-configure/configuring-opensearch/experimental/).
+
+## Endpoints
+
+```json
+GET /_plugins/_security/api/versions
+GET /_plugins/_security/api/version/<version_id>
+POST /_plugins/_security/api/version/rollback
+POST /_plugins/_security/api/version/rollback/<version_id>
+```
+
+## Path parameters
+
+The following table lists the available path parameters. All path parameters are optional.
+
+| Parameter | Data type | Description |
+| :--- | :--- | :--- |
+| `version_id` | String | The version identifier to view or roll back to (for example, `v1`, `v2`). Required for specific version operations. |
+
+## View a specific version
+
+Use this endpoint to retrieve the complete security configuration for a specified version.
+
+### Endpoint
+
+```json
+GET /_plugins/_security/api/version/<version_id>
+```
+
+### Example request
+
+```json
+GET /_plugins/_security/api/version/v2
+```
+{% include copy-curl.html %}
+
+### Example response
+
+<!-- add example response -->
+
+```json
+```
+
+### Response body fields
+
+The following table lists all response body fields for viewing a specific version.
+
+<!-- fill in the table -->
+
+| Field | Data type | Description |
+| :--- | :--- | :--- |
+| | | |
+
+## View all versions
+
+Use this endpoint to retrieve a list of all available configuration versions.
+
+### Endpoint
+
+```json
+GET /_plugins/_security/api/versions
+```
+
+### Example request
+
+```json
+GET /_plugins/_security/api/versions
+```
+{% include copy-curl.html %}
+
+### Example response
+
+<!-- add example response -->
+
+```json
+```
+
+### Response body fields
+
+The following table lists all response body fields for viewing all versions.
+
+<!-- fill in the table -->
+
+| Field | Data type | Description |
+| :--- | :--- | :--- |
+| | | |
+
+## Roll back to previous version
+
+Use this endpoint to restore the security configuration to the immediately preceding version.
+
+<!-- add a warning if necessary 
+
+
+**Warning**: Rolling back security configurations affects cluster-wide security settings. Ensure you understand the implications before proceeding.
+{: .warning }
+
+-->
+
+### Endpoint
+
+```json
+POST /_plugins/_security/api/version/rollback
+```
+
+### Example request
+
+```json
+POST /_plugins/_security/api/version/rollback
+```
+{% include copy-curl.html %}
+
+### Example response
+
+<!-- add example response -->
+
+```json
+```
+
+### Response body fields
+
+The following table lists all response body fields for rollback operations.
+
+<!-- fill in the table -->
+
+| Field | Data type | Description |
+| :--- | :--- | :--- |
+| | | |
+
+## Roll back to a specific version
+
+Use this endpoint to restore the security configuration to a specified version.
+
+<!-- add a warning if necessary 
+
+
+**Warning**: Rolling back security configurations affects cluster-wide security settings. Ensure you understand the implications before proceeding.
+{: .warning }
+
+-->
+
+### Endpoint
+
+```json
+POST /_plugins/_security/api/version/rollback/<version_id>
+```
+
+### Example request
+
+```json
+POST /_plugins/_security/api/version/rollback/v1
+```
+{% include copy-curl.html %}
+
+### Example response
+
+<!-- add example response -->
+
+```json
+```
+
+### Response body fields
+
+The following table lists all response body fields for rollback operations.
+
+<!-- fill in the table -->
+
+| Field | Data type | Description |
+| :--- | :--- | :--- |
+| | | |
+
+## Required permissions
+
+Ensure that you have the appropriate permissions for the operations you want to perform.
+
+<!-- specify the permissions needed for each operation, for example:
+
+| Operation | Required Permission |
+| :--- | :--- |
+| View versions | `cluster:admin/...` |
+| Roll back configuration | `cluster:admin/...` |
+
+These permissions are included in the default `security_manager` and `all_access` roles.
+
+-->
+
+## Limitations
+
+<!-- any limitations? For example, does rolling back affect audit logs or other historical data? -->
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