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|
import ../make-test-python.nix ({ pkgs, lib, ... } :
let
releases = import ../../release.nix {
configuration = {
# Building documentation makes the test unnecessarily take a longer time:
documentation.enable = lib.mkForce false;
# Our tests require `grep` & friends:
environment.systemPackages = with pkgs; [ busybox ];
};
};
lxd-image-metadata = releases.lxdContainerMeta.${pkgs.stdenv.hostPlatform.system};
lxd-image-rootfs = releases.lxdContainerImage.${pkgs.stdenv.hostPlatform.system};
in {
name = "lxd-container";
meta = with pkgs.lib.maintainers; {
maintainers = [ patryk27 adamcstephens ];
};
nodes.machine = { lib, ... }: {
virtualisation = {
diskSize = 4096;
# Since we're testing `limits.cpu`, we've gotta have a known number of
# cores to lean on
cores = 2;
# Ditto, for `limits.memory`
memorySize = 512;
lxc.lxcfs.enable = true;
lxd.enable = true;
};
};
testScript = ''
def instance_is_up(_) -> bool:
status, _ = machine.execute("lxc exec container --disable-stdin --force-interactive /run/current-system/sw/bin/true")
return status == 0
machine.wait_for_unit("sockets.target")
machine.wait_for_unit("lxd.service")
machine.wait_for_file("/var/lib/lxd/unix.socket")
# Wait for lxd to settle
machine.succeed("lxd waitready")
# no preseed should mean no service
machine.fail("systemctl status lxd-preseed.service")
machine.succeed("lxd init --minimal")
machine.succeed(
"lxc image import ${lxd-image-metadata}/*/*.tar.xz ${lxd-image-rootfs}/*/*.tar.xz --alias nixos"
)
with subtest("Container can be managed"):
machine.succeed("lxc launch nixos container")
with machine.nested("Waiting for instance to start and be usable"):
retry(instance_is_up)
machine.succeed("echo true | lxc exec container /run/current-system/sw/bin/bash -")
machine.succeed("lxc delete -f container")
with subtest("Container is mounted with lxcfs inside"):
machine.succeed("lxc launch nixos container")
with machine.nested("Waiting for instance to start and be usable"):
retry(instance_is_up)
## ---------- ##
## limits.cpu ##
machine.succeed("lxc config set container limits.cpu 1")
machine.succeed("lxc restart container")
with machine.nested("Waiting for instance to start and be usable"):
retry(instance_is_up)
assert (
"1"
== machine.succeed("lxc exec container grep -- -c ^processor /proc/cpuinfo").strip()
)
machine.succeed("lxc config set container limits.cpu 2")
machine.succeed("lxc restart container")
with machine.nested("Waiting for instance to start and be usable"):
retry(instance_is_up)
assert (
"2"
== machine.succeed("lxc exec container grep -- -c ^processor /proc/cpuinfo").strip()
)
## ------------- ##
## limits.memory ##
machine.succeed("lxc config set container limits.memory 64MB")
machine.succeed("lxc restart container")
with machine.nested("Waiting for instance to start and be usable"):
retry(instance_is_up)
assert (
"MemTotal: 62500 kB"
== machine.succeed("lxc exec container grep -- MemTotal /proc/meminfo").strip()
)
machine.succeed("lxc config set container limits.memory 128MB")
machine.succeed("lxc restart container")
with machine.nested("Waiting for instance to start and be usable"):
retry(instance_is_up)
assert (
"MemTotal: 125000 kB"
== machine.succeed("lxc exec container grep -- MemTotal /proc/meminfo").strip()
)
machine.succeed("lxc delete -f container")
'';
})
|
