bastion host in rke

content/rke/v0.1.x/en/config-options/bastion-host/_index.md

@@ -1,9 +1,11 @@
 ---
 title: Bastion/Jump Host Configuration
-weight: 3000
+weight: 3015
 draft: true
 ---
-Since RKE uses `ssh` to connect to hosts, you may have to use RKE with a bastion host.
+
+Since RKE uses `ssh` to connect to [nodes]({{< baseurl >}}/rke/v0.1.x/en/config-options/nodes/), you can configure to use a bastion host.
+
 ```yaml
 bastion_host:
   address: x.x.x.x
@@ -16,3 +18,25 @@ bastion_host:
   #
   #   -----END RSA PRIVATE KEY-----
 ```
+
+### Bastion Host Options
+
+#### Address
+
+The `address` directive will be used to set the hostname or IP address of the bastion host. RKE must be able to connect to this address.
+
+#### SSH Port
+
+You specify which `port` to be used when connecting to the bastion host. The default port is `22`.
+
+#### SSH Users
+
+You specify the `user` to be used when connecting to this node.
+
+#### SSH Key Path
+
+You specify the path, i.e. `ssh_key_path`, for the SSH private key to be used when connecting to the bastion host.
+
+#### SSH Key
+
+Instead of setting the path to the SSH key, you can specify the actual key, i.e. `ssh_key`, to be used to connect to the bastion host.