Hello,
I’m running Kafka inside a nixos-container defined in a flake.
Everything works fine except for the fact that when create the container it gets 2 IPv4 addresses assigned and only one of them works.
Because of that when I try to reach Kafka from my host it fails randomly depending on which IP address it tries.
Is there a way to force it to only get one IP address assigned?
This is the flake configuration for the container:
{
description = "Kafka service container for local testing";
inputs = {
nixpkgs.url = "github:nixos/nixpkgs/nixos-22.11";
};
outputs = { nixpkgs, flake-utils, ... }: {
nixosConfigurations = {
kafka = nixpkgs.lib.nixosSystem {
system = "x86_64-linux";
modules = [
({ pkgs, ... }: {
boot.isContainer = true; # Only boot as container
system.stateVersion = "22.11";
environment.systemPackages = [
pkgs.kcat
];
networking = {
hostName = "kafka";
enableIPv6 = false;
firewall.allowedTCPPorts = [ 9092 ];
};
services = {
apache-kafka.enable = true;
zookeeper.enable = true;
};
})
];
};
};
};
}
and this is how I create and start it as well as the machinectl status output
Here I would like to only have the IP address 10.233.1.2