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# AWS::EVS::Environment HostInfoForCreate
<a name="aws-properties-evs-environment-hostinfoforcreate"></a>

An object that represents a host.

**Note**  
You cannot use `dedicatedHostId` and `placementGroupId` together in the same `HostInfoForCreate`object. This results in a `ValidationException` response.

## Syntax
<a name="aws-properties-evs-environment-hostinfoforcreate-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-evs-environment-hostinfoforcreate-syntax.json"></a>

```
{
  "[DedicatedHostId](#cfn-evs-environment-hostinfoforcreate-dedicatedhostid)" : String,
  "[HostName](#cfn-evs-environment-hostinfoforcreate-hostname)" : String,
  "[InstanceType](#cfn-evs-environment-hostinfoforcreate-instancetype)" : String,
  "[KeyName](#cfn-evs-environment-hostinfoforcreate-keyname)" : String,
  "[PlacementGroupId](#cfn-evs-environment-hostinfoforcreate-placementgroupid)" : String
}
```

### YAML
<a name="aws-properties-evs-environment-hostinfoforcreate-syntax.yaml"></a>

```
  [DedicatedHostId](#cfn-evs-environment-hostinfoforcreate-dedicatedhostid): String
  [HostName](#cfn-evs-environment-hostinfoforcreate-hostname): String
  [InstanceType](#cfn-evs-environment-hostinfoforcreate-instancetype): String
  [KeyName](#cfn-evs-environment-hostinfoforcreate-keyname): String
  [PlacementGroupId](#cfn-evs-environment-hostinfoforcreate-placementgroupid): String
```

## Properties
<a name="aws-properties-evs-environment-hostinfoforcreate-properties"></a>

`DedicatedHostId`  <a name="cfn-evs-environment-hostinfoforcreate-dedicatedhostid"></a>
The unique ID of the Amazon EC2 Dedicated Host.  
*Required*: No  
*Type*: String  
*Pattern*: `^h-[a-f0-9]{8}([a-f0-9]{9})?$`  
*Minimum*: `1`  
*Maximum*: `25`  
*Update requires*: Updates are not supported.

`HostName`  <a name="cfn-evs-environment-hostinfoforcreate-hostname"></a>
The DNS hostname of the host. DNS hostnames for hosts must be unique across Amazon EVS environments and within VCF.  
*Required*: Yes  
*Type*: String  
*Pattern*: `^([a-zA-Z0-9\-]*)$`  
*Update requires*: Updates are not supported.

`InstanceType`  <a name="cfn-evs-environment-hostinfoforcreate-instancetype"></a>
The EC2 instance type that represents the host.  
Currently, Amazon EVS supports only the `i4i.metal` instance type.
*Required*: Yes  
*Type*: String  
*Allowed values*: `i4i.metal`  
*Update requires*: Updates are not supported.

`KeyName`  <a name="cfn-evs-environment-hostinfoforcreate-keyname"></a>
The name of the SSH key that is used to access the host.  
*Required*: Yes  
*Type*: String  
*Pattern*: `^[a-zA-Z0-9_-]+$`  
*Minimum*: `1`  
*Maximum*: `255`  
*Update requires*: Updates are not supported.

`PlacementGroupId`  <a name="cfn-evs-environment-hostinfoforcreate-placementgroupid"></a>
The unique ID of the placement group where the host is placed.  
*Required*: No  
*Type*: String  
*Pattern*: `^pg-[a-f0-9]{8}([a-f0-9]{9})?$`  
*Minimum*: `1`  
*Maximum*: `25`  
*Update requires*: Updates are not supported.