---
layout: docs
page_title: Consul server configuration JSON schema reference
description: Learn about the fields available in the JSON scheme for configuring ECS task connections to Consul servers.
---

# Consul server configuration JSON schema reference

This topic provides reference information about the JSON schema used to build the `config.tf` file. Refer to [Configure Consul server settings](/consul/docs/ecs/deploy/terraform#configure-consul-server-settings) for information about how Consul on ECS uses the JSON schema. 

## Configuration model

The following list describes the attributes, data types, and default values, if any, in the `config.tf` file. Click on a value to learn more about the attribute.

- [`consulServers`](#consulservers): map 
	- [`hosts`](#consulservers-hosts): string
   	- [`skipServerWatch`](#consulservers-hosts): boolean | `false`
	- [`defaults`](#consulservers-defaults): map 
		- [`caCertFile`](#consulservers-defaults): string 
		- [`tlsServerName`](#consulservers-defaults): string 
		- [`tls`](#consulservers-defaults): boolean | `false`
	- [`grpc`](#consulservers-grpc): map 
		- [`port`](#consulservers-grpc): number 
		- [`caCertFile`](#consulservers-grpc): string 
		- [`tlsServerName`](#consulservers-grpc): string 
		- [`tls`](#consulservers-grpc): boolean | `false`
	- [`http`](#consulservers-http): map 
		- [`https`](#consulservers-http): boolean | `false`
		- [`port`](#consulservers-http): number
		- [`caCertFile`](#consulservers-http): string
		- [`tlsServerName`](#consulservers-http): string
		- [`tls`](#consulservers-http): boolean | `false`

## Specification

This section provides details about the attribes in the `config.tf` file.

### `consulServers`

Parent-level attribute containing all of the server configurations. All other configuraitons in the file are children of the `consulServers` attribute. 

#### Values

- Default: None
- Data type: Map


### `consulServers.hosts`

Map that contains the `skipServerWatch` configuration for Consul server hosts.  

#### Values

- Default: None
- Data type: Map

### `consulServers.hosts.skipServerWatch`

Boolean that disables watches on the Consul server. Set to `true` if the Consul server is already behind a load balancer.  

#### Values

- Default: `false`
- Data type: Boolean

### `consulServers.defaults`

Map of default server configurations. Defaults apply to gRPC and HTTP traffic.  

#### Values

- Default: None
- Data type: Map

The following table describes the attributes available in the `defaults` configuration:

| Attribute | Description | Data type | Default |
| ---			| ---			  | --- 		  | ---		|
| `caCertFile` | Specifies the path to the certificate .pem file. | String | None |
| `tlsServerName` | Specifies the name of the TLS server. | String | None |
| `tls` | Enables TLS on the server. | Boolean | `false` |


### `consulServers.grpc`

Map of server configuration for gRPC traffic that override attributes defined in `consulServers.defaults`. 

#### Values

- Default: None
- Data type: Map

The following table describes the attributes available in the `grpc` configuration:

| Attribute | Description | Data type | Default |
| ---			| ---			  | --- 		  | ---		|
| `port` | Specifies the port number for gRPC communication. | Number | None |
| `caCertFile` | Specifies the path to the certificate .pem file. | String | None |
| `tlsServerName` | Specifies the name of the TLS server. | String | None |
| `tls` | Enables TLS for gRPC traffic on the server. | Boolean | `false` |

### `consulServers.http`

Map of server configuration for HTTP traffic that override attributes defined in `consulServers.defaults`. 

#### Values

- Default: None
- Data type: Map

The following table describes the attributes available in the `grpc` configuration:

| Attribute | Description | Data type | Default |
| ---			| ---			  | --- 		  | ---		|
| `https` | Enables HTTPS. | Boolean | `false` |
| `port` | Specifies the port number for HTTPS communication. | Number | None |
| `caCertFile` | Specifies the path to the certificate .pem file. | String | None |
| `tlsServerName` | Specifies the name of the TLS server. | String | None |
| `tls` | Enables TLS for HTTPS traffic on the server. | Boolean | `false` |