mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-05 05:13:04 +00:00
138 lines
3.6 KiB
Nix
138 lines
3.6 KiB
Nix
import ./make-test-python.nix ({ pkgs, ...} :
|
|
|
|
let
|
|
# Since we don't have access to the internet during the tests, we have to
|
|
# pre-fetch lxd containers beforehand.
|
|
#
|
|
# I've chosen to import Alpine Linux, because its image is turbo-tiny and,
|
|
# generally, sufficient for our tests.
|
|
alpine-meta = pkgs.fetchurl {
|
|
url = "https://tarballs.nixos.org/alpine/3.12/lxd.tar.xz";
|
|
hash = "sha256-1tcKaO9lOkvqfmG/7FMbfAEToAuFy2YMewS8ysBKuLA=";
|
|
};
|
|
|
|
alpine-rootfs = pkgs.fetchurl {
|
|
url = "https://tarballs.nixos.org/alpine/3.12/rootfs.tar.xz";
|
|
hash = "sha256-Tba9sSoaiMtQLY45u7p5DMqXTSDgs/763L/SQp0bkCA=";
|
|
};
|
|
|
|
lxd-config = pkgs.writeText "config.yaml" ''
|
|
storage_pools:
|
|
- name: default
|
|
driver: dir
|
|
config:
|
|
source: /var/lxd-pool
|
|
|
|
networks:
|
|
- name: lxdbr0
|
|
type: bridge
|
|
config:
|
|
ipv4.address: auto
|
|
ipv6.address: none
|
|
|
|
profiles:
|
|
- name: default
|
|
devices:
|
|
eth0:
|
|
name: eth0
|
|
network: lxdbr0
|
|
type: nic
|
|
root:
|
|
path: /
|
|
pool: default
|
|
type: disk
|
|
'';
|
|
|
|
|
|
in {
|
|
name = "lxd";
|
|
|
|
meta = with pkgs.stdenv.lib.maintainers; {
|
|
maintainers = [ patryk27 ];
|
|
};
|
|
|
|
machine = { lib, ... }: {
|
|
virtualisation = {
|
|
# 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 = ''
|
|
machine.wait_for_unit("sockets.target")
|
|
machine.wait_for_unit("lxd.service")
|
|
machine.wait_for_file("/var/lib/lxd/unix.socket")
|
|
|
|
# It takes additional second for lxd to settle
|
|
machine.sleep(1)
|
|
|
|
# lxd expects the pool's directory to already exist
|
|
machine.succeed("mkdir /var/lxd-pool")
|
|
|
|
machine.succeed(
|
|
"cat ${lxd-config} | lxd init --preseed"
|
|
)
|
|
|
|
machine.succeed(
|
|
"lxc image import ${alpine-meta} ${alpine-rootfs} --alias alpine"
|
|
)
|
|
|
|
with subtest("Containers can be launched and destroyed"):
|
|
machine.succeed("lxc launch alpine test")
|
|
machine.succeed("lxc exec test true")
|
|
machine.succeed("lxc delete -f test")
|
|
|
|
with subtest("Containers are being mounted with lxcfs inside"):
|
|
machine.succeed("lxc launch alpine test")
|
|
|
|
## ---------- ##
|
|
## limits.cpu ##
|
|
|
|
machine.succeed("lxc config set test limits.cpu 1")
|
|
|
|
# Since Alpine doesn't have `nproc` pre-installed, we've gotta resort
|
|
# to the primal methods
|
|
assert (
|
|
"1"
|
|
== machine.succeed("lxc exec test grep -- -c ^processor /proc/cpuinfo").strip()
|
|
)
|
|
|
|
machine.succeed("lxc config set test limits.cpu 2")
|
|
|
|
assert (
|
|
"2"
|
|
== machine.succeed("lxc exec test grep -- -c ^processor /proc/cpuinfo").strip()
|
|
)
|
|
|
|
## ------------- ##
|
|
## limits.memory ##
|
|
|
|
machine.succeed("lxc config set test limits.memory 64MB")
|
|
|
|
assert (
|
|
"MemTotal: 62500 kB"
|
|
== machine.succeed("lxc exec test grep -- MemTotal /proc/meminfo").strip()
|
|
)
|
|
|
|
machine.succeed("lxc config set test limits.memory 128MB")
|
|
|
|
assert (
|
|
"MemTotal: 125000 kB"
|
|
== machine.succeed("lxc exec test grep -- MemTotal /proc/meminfo").strip()
|
|
)
|
|
|
|
machine.succeed("lxc delete -f test")
|
|
|
|
with subtest("Unless explicitly changed, lxd leans on iptables"):
|
|
machine.succeed("lsmod | grep ip_tables")
|
|
machine.fail("lsmod | grep nf_tables")
|
|
'';
|
|
})
|