docs: document support for multiple snapshot destinations (#20829)

website/content/commands/snapshot/agent.mdx

@@ -2,7 +2,7 @@
 layout: commands
 page_title: 'Commands: Snapshot Agent'
 description: |
-  The `consul snapshot agent` command starts a process that takes snapshots of the state of the Consul servers in Consul Enterprise. It can capture server state once or it can run as daemon that captures snapshots at defined intervals.
+  The `consul snapshot agent` command starts a process that takes snapshots of the state of the Consul servers in Consul Enterprise. It can capture server state once or it can run as a daemon that captures snapshots at defined intervals.
 ---
 
 # Consul Snapshot Agent
@@ -17,8 +17,8 @@ version 0.7.1 and later. All other [snapshot subcommands](/consul/commands/snaps
 are available in the community edition of Consul.
 
 The `snapshot agent` subcommand starts a process that takes snapshots of the
-state of the Consul servers and saves them locally, or pushes them to an
+state of the Consul servers and saves them locally, or pushes them to optional
-optional remote storage service.
+remote storage services.
 
 The agent can be run as a long-running daemon process or in a one-shot mode
 from a batch job, based on the [`-interval`](#interval) argument. Snapshotting
@@ -36,10 +36,10 @@ leader and starting saving snapshots.
 As snapshots are saved, they will be reported in the log produced by the agent:
 
 ```log
-2016/11/16 21:21:13 [INFO] Snapshot agent running
+2023/11/16 21:21:13 [INFO] Snapshot agent running
-2016/11/16 21:21:13 [INFO] Waiting to obtain leadership...
+2023/11/16 21:21:13 [INFO] Waiting to obtain leadership...
-2016/11/16 21:21:13 [INFO] Obtained leadership
+2023/11/16 21:21:13 [INFO] Obtained leadership
-2016/11/16 21:21:13 [INFO] Saved snapshot 1479360073448728784
+2023/11/16 21:21:13 [INFO] Saved snapshot 1479360073448728784
 ```
 
 The number shown with the saved snapshot is its ID, which is based on a UNIX
@@ -166,32 +166,40 @@ Usage: `consul snapshot agent [options]`
       "max_failures": 3,
       "local_scratch_path": ""
     },
-    "local_storage": {
+    "backup_destinations": {
-      "path": "."
+      "local_storage": [
-    },
+        {
-    "aws_storage": {
+          "path": "."
-      "access_key_id": "",
+        }
-      "secret_access_key": "",
+      ],
-      "session_token": "",
+      "aws_storage": [
-      "iam_endpoint": "",
+        {
-      "role_arn": "",
+          "access_key_id": "",
-      "role_session_name": "",
+          "secret_access_key": "",
-      "web_identity_token_file": "",
+          "session_token": "",
-      "sts_endpoint": "",
+          "iam_endpoint": "",
-      "s3_region": "",
+          "role_arn": "",
-      "s3_bucket": "",
+          "role_session_name": "",
-      "s3_key_prefix": "consul-snapshot",
+          "web_identity_token_file": "",
-      "s3_server_side_encryption": false,
+          "sts_endpoint": "",
-      "s3_static_snapshot_name": "",
+          "s3_region": "",
-      "s3_force_path_style": false
+          "s3_endpoint": "",
-    },
+          "s3_bucket": "",
-    "azure_blob_storage": {
+          "s3_key_prefix": "consul-snapshot"
-      "account_name": "",
+        }
-      "account_key": "",
+      ],
-      "container_name": ""
+      "azure_blob_storage": [
-    },
+        {
-    "google_storage": {
+          "account_name": "",
-      "bucket": ""
+          "account_key": "",
+          "container_name": ""
+        },
+      ],
+      "google_storage": [
+        {
+          "bucket": ""
+        }
+      ]
     }
   }
 }
@@ -229,8 +237,7 @@ if desired.
 
 - `-local-scratch-path` - Location to store all temporary snapshots in prior to
   sending them off to the configured storage backend. If not configured the
-  system temporary directory will be used. When using the local storage backend
+  system temporary directory will be used.
-  this is not configurable and `-local-path` will be used.
 
 #### Agent Options
 
@@ -263,14 +270,16 @@ if desired.
 - `login-meta` - Metadata to set on the token, formatted as key=value. This flag may be provided multiple times.
 
 #### Local Storage Options
+This option cannot be used when using `backup_destinations` in a config file.
 
 - `-local-path` - Location to store snapshots locally. The default behavior
   of the snapshot agent is to store snapshots locally in this directory. Defaults
-  to "." to use the current working directory. If an alternate storage option is
+  to "." to use the current working directory. If an alternate remote storage 
-  configured, then local storage will be disabled and this option will be ignored.
+  option is configured, then local storage will be disabled and this option will 
+  be ignored.
 
 #### S3 Storage Options
-
+These options cannot be used when using `backup_destinations` in a config file.
 Note that despite the AWS references, any S3-compatible endpoint can be specified with `-aws-s3-endpoint`.
 
 - `-aws-access-key-id`, `-aws-secret-access-key` and `-aws-session-token` - These arguments supply static
@@ -369,6 +378,8 @@ The following example IAM policy document assumes that the `aws-s3-bucket` is `c
 
 From Consul Enterprise version `1.5.0` onwards, you can store snapshots in Azure Blob storage.
 
+These options cannot be used when using `backup_destinations` in a config file.
+
 - `-azure-blob-account-name` and `-azure-blob-account-key` - These arguments supply
   authentication information for connecting to Azure Blob storage.
 
@@ -382,12 +393,15 @@ From Consul Enterprise version `1.5.0` onwards, you can store snapshots in Azure
 
 From Consul Enterprise version `1.6.1` onwards, you can store snapshots in Google Cloud Storage. Authentication relies on automatic discovery through the sdk as described [here](https://cloud.google.com/docs/authentication/production):
 
+
 - First, ADC checks to see if the environment variable GOOGLE_APPLICATION_CREDENTIALS is set. If the variable is set, ADC uses the service account file that the variable points to. The next section describes how to set the environment variable.
 
 - If the environment variable isn't set, ADC uses the default service account that Compute Engine, Kubernetes Engine, App Engine, and Cloud Functions provide, for applications that run on those services.
 
 - If ADC can't use either of the above credentials, an error occurs.
 
+This option cannot be used when using `backup_destinations` in a config file.
+
 This integration needs the following information:
 
 - `-gcs-bucket` supplies the bucket to use.

website/content/docs/release-notes/consul/v1_18_x.mdx

@@ -39,6 +39,8 @@ We are pleased to announce the following Consul updates.
 
 - **Downgrade from Consul Enterprise to Consul Community Edition**: Consul now provides the ability for enterprise users to migrate their deployments to Community edition and disable enterprise features for business continuity. Refer to [Downgrade from Consul Enterprise to the community edition](/consul/docs/enterprise/ent-to-ce-downgrades) for more information. 
 
+- **Consul Snapshot Agent support for multiple destinations (Enterprise):** Consul Enterprise users can now specify [multiple local and remote destinations](/consul/commands/snapshot/agent) for Consul snapshot backups.
+
 ## Upgrading
 
 For more detailed information, please refer to the [upgrade details page](/consul/docs/upgrading/upgrade-specific) and the changelogs.