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Merge pull request #114240 from sorki/containers/nested

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nixos/nixos-containers: default boot.enableContainers to true
This commit is contained in:
Luke Granger-Brown 2021-04-25 11:37:01 +01:00 committed by GitHub
commit 0cc25061b0
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3 changed files with 34 additions and 8 deletions
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11
nixos/modules/virtualisation/nixos-containers.nix
View File

@ -439,21 +439,16 @@ in
default = false;
description = ''
Whether this NixOS machine is a lightweight container running
in another NixOS system. If set to true, support for nested
containers is disabled by default, but can be reenabled by
setting <option>boot.enableContainers</option> to true.
in another NixOS system.
'';
};
boot.enableContainers = mkOption {
type = types.bool;
default = !config.boot.isContainer;
default = true;
description = ''
Whether to enable support for NixOS containers. Defaults to true
(at no cost if containers are not actually used), but only if the
system is not itself a lightweight container of a host.
To enable support for nested containers, this option has to be
explicitly set to true (in the outer container).
(at no cost if containers are not actually used).
'';
};

1
nixos/tests/all-tests.nix
View File

@ -75,6 +75,7 @@ in
containers-ip = handleTest ./containers-ip.nix {};
containers-macvlans = handleTest ./containers-macvlans.nix {};
containers-names = handleTest ./containers-names.nix {};
containers-nested = handleTest ./containers-nested.nix {};
containers-physical_interfaces = handleTest ./containers-physical_interfaces.nix {};
containers-portforward = handleTest ./containers-portforward.nix {};
containers-reloadable = handleTest ./containers-reloadable.nix {};

30
nixos/tests/containers-nested.nix Normal file
View File

@ -0,0 +1,30 @@
# Test for NixOS' container nesting.
import ./make-test-python.nix ({ pkgs, ... }: {
name = "nested";
meta = with pkgs.lib.maintainers; { maintainers = [ sorki ]; };
machine = { lib, ... }:
let
makeNested = subConf: {
containers.nested = {
autoStart = true;
privateNetwork = true;
config = subConf;
};
};
in makeNested (makeNested { });
testScript = ''
machine.start()
machine.wait_for_unit("container@nested.service")
machine.succeed("systemd-run --pty --machine=nested -- machinectl list | grep nested")
print(
machine.succeed(
"systemd-run --pty --machine=nested -- systemd-run --pty --machine=nested -- systemctl status"
)
)
'';
})