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{ lib, ... }:
{
name = "earlyoom";
meta.maintainers = with lib.maintainers; [
oxalica
];
nodes.machine =
{ pkgs, ... }:
{
# Limit VM resource usage.
virtualisation.memorySize = 1024;
services.earlyoom = {
enable = true;
# Use SIGKILL, or `tail` will catch SIGTERM and exit successfully.
freeMemKillThreshold = 90;
};
systemd.services.testbloat = {
description = "Create a lot of memory pressure";
serviceConfig = {
ExecStart = "${pkgs.coreutils}/bin/tail /dev/zero";
};
};
};
testScript = ''
machine.wait_for_unit("earlyoom.service")
with subtest("earlyoom should kill the bad service"):
machine.fail("systemctl start --wait testbloat.service")
assert machine.get_unit_info("testbloat.service")["Result"] == "signal"
output = machine.succeed('journalctl -u earlyoom.service -b0')
assert 'low memory! at or below SIGKILL limits' in output
'';
}
|
