nixpkgs/nixos/tests/containers-bridge.nix

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let
hostIp = "192.168.0.1";
containerIp = "192.168.0.100/24";
hostIp6 = "fc00::1";
containerIp6 = "fc00::2/7";
in
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import ./make-test-python.nix ({ pkgs, lib, ... }: {
name = "containers-bridge";
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meta = {
maintainers = with lib.maintainers; [ aristid aszlig eelco kampfschlaefer ];
};
machine =
{ pkgs, ... }:
{ imports = [ ../modules/installer/cd-dvd/channel.nix ];
virtualisation.writableStore = true;
networking.bridges = {
br0 = {
interfaces = [];
};
};
networking.interfaces = {
br0 = {
ipv4.addresses = [{ address = hostIp; prefixLength = 24; }];
ipv6.addresses = [{ address = hostIp6; prefixLength = 7; }];
};
};
containers.webserver =
{
autoStart = true;
privateNetwork = true;
hostBridge = "br0";
localAddress = containerIp;
localAddress6 = containerIp6;
config =
{ services.httpd.enable = true;
services.httpd.adminAddr = "foo@example.org";
networking.firewall.allowedTCPPorts = [ 80 ];
};
};
containers.web-noip =
{
autoStart = true;
privateNetwork = true;
hostBridge = "br0";
config =
{ services.httpd.enable = true;
services.httpd.adminAddr = "foo@example.org";
networking.firewall.allowedTCPPorts = [ 80 ];
};
};
virtualisation.additionalPaths = [ pkgs.stdenv ];
};
testScript = ''
machine.wait_for_unit("default.target")
assert "webserver" in machine.succeed("nixos-container list")
with subtest("Start the webserver container"):
assert "up" in machine.succeed("nixos-container status webserver")
with subtest("Bridges exist inside containers"):
machine.succeed(
"nixos-container run webserver -- ip link show eth0",
"nixos-container run web-noip -- ip link show eth0",
)
ip = "${containerIp}".split("/")[0]
machine.succeed(f"ping -n -c 1 {ip}")
machine.succeed(f"curl --fail http://{ip}/ > /dev/null")
ip6 = "${containerIp6}".split("/")[0]
machine.succeed(f"ping -n -c 1 {ip6}")
machine.succeed(f"curl --fail http://[{ip6}]/ > /dev/null")
with subtest(
"nixos-container show-ip works in case of an ipv4 address "
+ "with subnetmask in CIDR notation."
):
result = machine.succeed("nixos-container show-ip webserver").rstrip()
assert result == ip
with subtest("Stop the container"):
machine.succeed("nixos-container stop webserver")
machine.fail(
f"curl --fail --connect-timeout 2 http://{ip}/ > /dev/null",
f"curl --fail --connect-timeout 2 http://[{ip6}]/ > /dev/null",
)
# Destroying a declarative container should fail.
machine.fail("nixos-container destroy webserver")
'';
})