Acquire Endpoint

When confirming the Endpoint configured when you use the SDK, you can first read the section on VPC Service Domain Name in the Developer Guide to understand the Endpoint concept. Baidu AI Cloud currently opens the multi-region (Region) support. Please refer to the part of network product VPC in Region Selection Introduction. The NAT services are a part of VPC services, and use the VPC service domain name.

Get the Key

To use Baidu Cloud products, you need to have a Baidu Cloud account and a valid AK (Access Key ID) and SK (Secret Access Key) for signature verification. You can obtain and understand your AK/SK information through the following steps:

1.[Register Baidu Cloud Account](https://login.bce.baidu.com/reg.html? tpl=bceplat&from=portal)

2.[Create AK/SK](https://console.bce.baidu.com/iam/? _=1513940574695#/iam/accesslist)

nat_client

Nat_client is the Python client of NAT services, encapsulates the API of NAT services, and simplifies the interaction between developers and NAT services. The users can call the methods in nat_client to configure the NAT gateway. The method return parameter in nat_client is consistent with [API Method](https://console.bce.baidu.com/iam/? _=1513940574695#/iam/accesslist).

Create nat_client

When creating nat_client, you need to first use Endpoint, AK and SK to configure the BceClientConfiguration type config instance, and then use the config instance to configure the nat_client. The specific configuration method is as follows:

HOST = b''
 AK = b''
 SK = b''
 config = BceClientConfiguration(
     credentials=BceCredentials(AK, SK), endpoint=HOST)
 self.client = nat_client.NatClient(config)

Create an NAT Gateway

The create_nat function can be used to create the gateway in the specified VPC, and is defined as below:

@required(name=(bytes, str),
           vpc_id=(bytes, str),
           spec=(bytes, str))
def create_nat(self, name, vpc_id, spec, billing=None, eips=None,
               client_token=None, config=None)

The parameters are described as follows:

For the customized Billing type definition, refer to nat_model.py.

Query the NAT Gateway List

The list_nats function can be used to query the NAT gateway list. If the query condition is queried, the NAT gateways are screened according to the query condition. If no query condition is provided, all NAT gateways are queried by default. The function is defined as below:

@required(vpc_id=(bytes, str))
def list_nats(self, vpc_id, nat_id=None, name=None,
              ip=None, marker=None, max_keys=None, config=None)

The parameters are described as follows:

Query the NAT Gateway Details

The get_nat function can be used to query the NAT details, and is defined as below:

 @required(nat_id=(bytes, str))
    def get_nat(self, nat_id, config=None)

The parameters are described as follows:

Update the NAT Gateway Name

The update_nat function can be used to update the NAT gateway name, and is defined as below:

@required(nat_id=(bytes, str), name=(bytes, str))
    def update_nat(self, nat_id, name, client_token=None, config=None)

The parameters are described as follows:

Bind EIP

The bind_eip function can be used to bind EIP to the NAT gateway, and is defined as below:

@required(nat_id=(bytes, str), eips=list)
    def bind_eip(self, nat_id, eips, client_token=None, config=None)

The parameters are described as follows:

Unbind EIP

The unbind_eip function can be used to unbind EIP from the NAT gateway, and is defined as below:

@required(nat_id=(bytes, str), eips=list)
    def unbind_eip(self, nat_id, eips, client_token=None, config=None)

The parameters are described as follows:

Release the NAT Gateway

The delete_nat function can be used to release the NAT gateway, and is defined as below:

@required(nat_id=(bytes, str))
    def delete_nat(self, nat_id, client_token=None, config=None)

The parameters are described as follows:

NAT Gateway Renewal

The purchase_reserved_nat function can be used to renew the NAT gateway, and only the prepaid type supports the renewal operation. The function is defined as below:

@required(nat_id=(bytes, str))
    def purchase_reserved_nat(self, nat_id, billing, client_token=None,
                              config=None)

The parameters are described as follows: