Update infromation about backups

Signed-off-by: Andrei Kvapil <kvapss@gmail.com>

packages/apps/clickhouse/Chart.yaml

@@ -16,7 +16,7 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.4.1
+version: 0.5.0
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to

packages/apps/clickhouse/README.md

@@ -1,5 +1,20 @@
 # Managed Clickhouse Service
 
+### How to restore backup:
+
+find snapshot:
+```
+restic -r s3:s3.example.org/clickhouse-backups/table_name snapshots
+```
+
+restore:
+```
+restic -r s3:s3.example.org/clickhouse-backups/table_name restore latest --target /tmp/
+```
+
+more details:
+- https://itnext.io/restic-effective-backup-from-stdin-4bc1e8f083c1
+
 ## Parameters
 
 ### Common parameters
@@ -13,9 +28,14 @@
 
 ### Configuration parameters
 
+| Name    | Description         | Value |
+| ------- | ------------------- | ----- |
+| `users` | Users configuration | `{}`  |
+
+### Backup parameters
+
 | Name                     | Description                                    | Value                                                  |
 | ------------------------ | ---------------------------------------------- | ------------------------------------------------------ |
-| `users`                  | Users configuration                            | `{}`                                                   |
 | `backup.enabled`         | Enable pereiodic backups                       | `false`                                                |
 | `backup.s3Region`        | The AWS S3 region where backups are stored     | `us-east-1`                                            |
 | `backup.s3Bucket`        | The S3 bucket used for storing backups         | `s3.example.org/clickhouse-backups`                    |

packages/apps/clickhouse/values.yaml

@@ -23,6 +23,8 @@ storageClass: ""
 ##
 users: {}
 
+## @section Backup parameters
+
 ## @param backup.enabled Enable pereiodic backups
 ## @param backup.s3Region The AWS S3 region where backups are stored
 ## @param backup.s3Bucket The S3 bucket used for storing backups