Using Configure as a Gateway for virtual net devices

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This article describes the results of selecting the option to Configure as a Gateway in the Advanced Options section of a Cloud Server network configuration. The article also discusses the possible errors you might experience and how best to address those errors.

Note: The option to configure as a gateway is only available for virtual net devices and is enabled by default.

Enable or disable the Configure as a Gateway option

Log in to the Cloud Control Panel.
In the top navigation bar, click Select a Product > Rackspace Cloud.
At the top of the page, click Servers > Cloud Servers.
Click the Create Server button.
After you select your operating system and flavor, expand the Advanced Options section.
Select your preferred network settings and then check or uncheck the Configure as a Gateway option.
Click the Create Server button.

Cloud Network configuration and possible errors

The following table lists the steps taken by the automated process that is used to set up a Cloud Network, along with steps to take if the automation encounters an issue.

Configuration step	What could go wrong?	What state is the device left in?	Recommended solution
Build a server by using the Configure as a Gateway option.	The server build failed.	The server is now stuck in an error state.	Delete the server and build a new one.
Create a Cloud Network with the name `$servername-net`.	Network creation can fail due to exceeding the Cloud Networks quota of 10 networks per region. Response from API: `409 OverQuotaClient: Quota exceeded for resources: ['network']`	The server is built, but the Cloud Network configuration is not complete.	Delete unused Cloud Networks in the region, or open a support ticket to request a quota increase (subject to approval). Next, delete the server and build a new one.
Create a subnet.	It is unlikely anything will go wrong at this point in the build.	The server is built, but the Cloud Network configuration is not complete.	Delete the server and Cloud Network, and build a new server.
Create a fixed Internet Protocol (IP) port by using the device ID of the server.	It is unlikely anything will go wrong at this point in the build.	The server is built, but the Cloud Network configuration is not complete. Also, the Cloud Network cannot be deleted until the port is deleted.	Delete the server, Cloud Network port, and Cloud Network, and then build a new server.
Attach a fixed IP port to the server.	A sync issue between the Cloud Servers and Cloud Networks APIs leads to the Cloud Servers API assigning the wrong IP.	The IP is wrong in the API, but it works.	You can ignore this situation in the short term. If it becomes a problem, you need to detach the network, wait 15 minutes, make a new fixed IP port, and attach to the server.

Fortigate virtual machine image configuration and possible errors

The following table lists the steps taken by the automated process that is used to set up a Cloud Network, along with steps to take if the automation encounters an issue.

Configuration step	Command to perform action	What could go wrong?	What state is the device left in?	Recommended solution
Set the IP in Cloud Networks interface.	`config system interface` `edit port3` `set vdom root` `set type physical` `set alias $cloudnetwork` `set ip $gatewayip 255.255.255.0` `end`	- There is a temporary network issue. - The admin password was changed before automation completed.	Servers built behind the Fortigate-VM are unable to reach the Internet, as the gateway IP is not yet assigned to the Fortigate-VM.	Log in via HTTPS or SSH and set the port3 (Cloud Networks) interface manually.
Configure NAT between Cloud Networks and PublicNet (Internet access).	`config firewall policy` `edit 1` `set name "allow outbound internet access"` `set srcintf "port3"` `set dstintf "port1"` `set srcaddr "all"` `set dstaddr "all"` `set action accept` `set schedule "always"` `set service "ALL"` `set nat enable` `set comments "nat by ServerMill"` `next` `end`	- There is a temporary network issue. - The admin password was changed before automation completed.	Servers built behind the Fortigate-VM are unable to reach the Internet, as NAT is unconfigured.	Servers built behind the Fortigate-VM are unable to reach the Internet, as NAT is unconfigured.

Updated about 1 year ago