I want to configure 80,000 IPs on a NixOS system.
Is there something like allowedTCPPortRanges where i can set a Range in which the IPs should be used?
Like
GenIPsInRange = [{"from": "10.1.0.0", "to": "10.2.56.128"}];
It is possible to configure multiple IPs on a NIC like this:
networking = {
interfaces = {
ens3.ipv4.addresses = [
{ address = "10.0.1.1"; prefixLength = 8; }
{ address = "10.0.1.2"; prefixLength = 8; }
{ address = "10.0.1.3"; prefixLength = 8; }
{ address = "10.0.1.4"; prefixLength = 8; }
{ address = "10.0.1.5"; prefixLength = 8; }
];
};
};
And to create 500 macvlan interfaces with
networking = {
macvlans = lib.attrsets.genAttrs (map (i: "macvlan${toString i}") (lib.lists.range 1 500)) (_: { interface = "enp2s0f1"; mode = "bridge"; });
};
(they are good when you want to get 500 IPs from DHCP)
Workaround
Use python to generate IP list:
from ipaddress import ip_address
def ips(start, end):
'''Return IPs in IPv4 range, inclusive.'''
start_int = int(ip_address(start).packed.hex(), 16)
end_int = int(ip_address(end).packed.hex(), 16)
return [ip_address(ip).exploded for ip in range(start_int, end_int)]
for ip in ips('10.1.0.0', '10.2.56.128'):
print("{{ address = \"{}\"; prefixLength = 8; }}".format(ip))
[davidak@nixos:~/code/scripts]$ python3 generate_ips_in_range.py
{ address = "10.1.0.0"; prefixLength = 8; }
{ address = "10.1.0.1"; prefixLength = 8; }
{ address = "10.1.0.2"; prefixLength = 8; }
{ address = "10.1.0.3"; prefixLength = 8; }
{ address = "10.1.0.4"; prefixLength = 8; }
{ address = "10.1.0.5"; prefixLength = 8; }
{ address = "10.1.0.6"; prefixLength = 8; }
{ address = "10.1.0.7"; prefixLength = 8; }
{ address = "10.1.0.8"; prefixLength = 8; }
{ address = "10.1.0.9"; prefixLength = 8; }
{ address = "10.1.0.10"; prefixLength = 8; }
...
I saved them in target-ips.nix and imported it in my configuration.nix
[{ address = "10.1.0.0"; prefixLength = 8; }
{ address = "10.1.0.1"; prefixLength = 8; }
{ address = "10.1.0.2"; prefixLength = 8; }
...
{ address = "10.2.56.127"; prefixLength = 8; }]
(the file size is 3.8 MB)
{ config, pkgs, ... }:
let
target-ips = import ./target-ips.nix;
in
{
...
networking = {
interfaces = {
ens3.ipv4.addresses = [
{ address = "10.0.0.5"; prefixLength = 8; }
]++target-ips;
};
};
...
}
The nixos-rebuild switch took 7 minutes.
It works, all IPs are reachable.
