[Question] about eip and snat

[pasztorl]

Hi,

i seen this page on docs: https://kubeovn.github.io/docs/v1.12.x/en/guide/eip-snat/

My question is that if i would like to use eip/snat i can only setup one network range for them because there is only one ovn-external-gw-config can exists?

How can i create multiple networks for using eip/snat feature?

thanks

[dosubot]

Hey @pasztorl! How can I assist you today?

To create multiple networks for using the EIP/SNAT feature in Kube-OVN, you can follow a workaround that involves using a custom VPC setup. Here's a suggested approach:

1. Create an Extra External Subnet: Set up an additional external subnet with a provider network and VLAN subnet CRD.

2. Configure the Custom VPC: Add the extra external subnets to the extraExternalSubnets list in the custom VPC specification.

3. Use OVN SNAT and OVN FIP: Create OVN SNAT and OVN FIP as needed for your setup.

This feature has been completed, and more detailed information can be found in the documentation: Kube-OVN EIP/FIP/SNAT Guide. Be sure to handle the default VPC route carefully and consider using a custom VPC as an example ^[1].

To continue talking to Dosu, mention @dosu.

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[pasztorl]

so the external-gw-config is for the default vpc and every vpc can have exactly one external network config?

[dosubot]

The ovn-external-gw-config is primarily used for managing the external gateway configuration in the default VPC setup in Kube-OVN. It determines the external gateway's state and network settings ^[1]. However, each VPC can have its own external network configurations, including multiple external subnets, by using the extraExternalSubnets list in the VPC configuration. This allows for more flexibility in managing multiple network ranges within custom VPCs ^[2][3].

To continue talking to Dosu, mention @dosu.

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[zbb88888]

so the external-gw-config is for the default vpc and every vpc can have exactly one external network config?

yes