This introduces an option that allows us to turn off stateful generation
of Diffie-Hellman parameters, which in some way is still "stateful" as
the generated DH params file is non-deterministic.
However what we can avoid with this is to have an increased surface for
failures during system startup, because generation of the parameters is
done during build-time.
Aside from adding a NixOS VM test it also restructures the type of the
security.dhparams.params option, so that it's a submodule.
A new defaultBitSize option is also there to allow users to set a
system-wide default.
I added a release notes entry that described what has changed and also
included a few notes for module developers using this module, as the
first usage already popped up in NixOS/nixpkgs#39507.
Thanks to @Ekleog and @abbradar for reviewing.
This allows to set the default bit size for all the Diffie-Hellman
parameters defined in security.dhparams.params and it's particularly
useful so that we can set it to a very low value in tests (so it doesn't
take ages to generate).
Regardless for the use in testing, this also has an impact in production
systems if the owner wants to set all of them to a different size than
2048, they don't need to set it individually for every params that are
set.
I've added a subtest to the "dhparams" NixOS test to ensure this is
working properly.
Signed-off-by: aszlig <aszlig@nix.build>
When trying to run NSD to serve the root zone, one gets the following
error message:
error: illegal name: '.'
This is because the name of the zone is used as the derivation name for
building the zone file. However, Nix doesn't allow derivation names
starting with a period.
So whenever the zone is "." now, the file name generated is "root"
instead of ".".
I also added an assertion that makes sure the user sets
services.nsd.rootServer, otherwise NSD will fail at runtime because it
prevents serving the root zone without an explicit compile-time option.
Tested this by adding a root zone to the "nsd" NixOS VM test.
Signed-off-by: aszlig <aszlig@nix.build>
Cc: @hrdinka, @qknight
The following changes have been applied:
- the property `http.headers.X-Content-Type-Options` must a list of
strings rather than a serialized list
- instead of `/etc/docker/registry/config.yml` the configuration will be
written with `pkgs.writeText` and the store path will be used to run
the registry. This reduces the risk of possible impurities by relying
on the Nix store only.
- cleaned up the property paths to easy readability and reduce the
verbosity.
- enhanced the testcase to ensure that digests can be deleted as well
- the `services.docker-registry.extraConfig` object will be merged with
`registryConfig`
/cc @ironpinguin
Some time ago I fixed the broken package `osquery` (see #39336).
I had to test the package manually by starting the daemon locally,
however this doesn't ensure that the module is still functional.
In order to cover the package *and* the integration with the NixOS
module I thought that adding a testcase might be the best idea.
The current testcase does the following things:
* Starts an `osqueryd` service in a test machine with customized logger
path and PID file
* Ensures that the `osqueryd.service` unit is running
* Checks if the customized flags (`pidfile`, `logger_path`) are applied
to `osquery`.
* Performs a simple test query against the `etc_hosts` database to check
if the basic funcitonality of `osquery` (storing system information into
a database) works fine.
The usb_add and usb_del monitor commands have been removed in QEMU
version 2.12 (introduced in 3e3b39f173).
Quote from https://wiki.qemu.org/ChangeLog/2.12#Incompatible_changes:
> The deprecated HMP commands "usb_add" and "usb_del" have been removed.
> Use "device_add" and "device_del" as replacement instead.
So we're doing exactly that and the udisks2 test now works again.
Signed-off-by: aszlig <aszlig@nix.build>
Cc: @edolstra
I'm not sure why 024b501907 used -q 0
because even netcat-openbsd has the -N flag which IMO is the better way
to shutdown the socket on EOF.
Our default netcat implementation has changed once again[1] in
3c3b82234a and we're now using LibreSSL's
implementation, which doesn't have a -q flag.
See https://github.com/NixOS/nixpkgs/pull/39634 for the pull request
introducing the switch.
[1]: https://github.com/NixOS/nixpkgs/pull/19982
Signed-off-by: aszlig <aszlig@nix.build>
Cc: @matthewbauer, @dtzWill, @Mic92
The Nix expression here is really hard to read with multiple (and
unnecessarily) nested lets and it also generates attribute names based
on the derivation generated by makeTest, which will result in these
attribute names:
* vm-test-run-predictableInterfaceNames
* vm-test-run-predictableInterfaceNames-with-networkd
* vm-test-run-unpredictableInterfaceNames
* vm-test-run-unpredictableInterfaceNames-with-networkd
With the refactor the attribute names are now:
* predictable
* predictableNetworkd
* unpredictable
* unpredictableNetworkd
So now the code is even shorter and IMHO slightly more readable.
Signed-off-by: aszlig <aszlig@nix.build>
Cc: @symphorien, @fpletz, @adisbladis
This is a very very very ugly workaround and it's because Chromium seems
to eat keystroke for a few seconds after a new window is created.
I haven't found a better solution yet, so let's at least unbreak the
test until we come up with a better way.
Thanks to @vcunat for bringing this to my attention and also doing the
initial bisect.
The change that brought up this problem was 2b29e40153,
which updated Chromium from version 65.0.3325.181 to version
66.0.3359.117. Unfortunately the upstream changelog[1] is way too large
to actually guess what the breaking change is.
[1]: https://chromium.googlesource.com/chromium/src/+log/65.0.3325.181..66.0.3359.117?pretty=fuller&n=10000
Signed-off-by: aszlig <aszlig@nix.build>
Cc: @bendlas, @vcunat
This option allows us to turn off stateful generation of Diffie-Hellman
parameters, which in some way is still stateful as the generated DH
params file is non-deterministic.
However what we can avoid with this is to have an increased surface for
failures during system startup, because generation of the parameters is
done during build-time.
Another advantage of this is that we no longer need to take care of
cleaning up the files that are no longer used and in my humble opinion I
would have preferred that #11505 (which puts the dhparams in the Nix
store) would have been merged instead of #22634 (which we have now).
Luckily we can still change that and this change gives the user the
option to put the dhparams into the Nix store.
Beside of the more obvious advantages pointed out here, this also
effects test runtime if more services are starting to use this (for
example see #39507 and #39288), because generating DH params could take
a long time depending on the bit size which adds up to test runtime.
If we generate the DH params in a separate derivation, subsequent test
runs won't need to wait for DH params generation during bootup.
Of course, tests could still mock this by force-disabling the service
and adding a service or activation script that places pre-generated DH
params in /var/lib/dhparams but this would make tests less readable and
the workaround would have to be made for each test affected.
Note that the 'stateful' option is still true by default so that we are
backwards-compatible with existing systems.
Signed-off-by: aszlig <aszlig@nix.build>
Cc: @Ekleog, @abbradar, @fpletz
We're going to implement an option which allows us to turn off stateful
handling of Diffie-Hellman parameter files by putting them into the Nix
store.
However, modules now might need a way to reference these files, so we
add a now path option to every param specified, which carries a
read-only value of the path where to find the corresponding DH params
file.
I've also improved the description of security.dhparams.params a bit so
that it uses <warning/> and <note/>.
The NixOS VM test also reflects this change and checks whether the old
way to specify the bit size still works.
Signed-off-by: aszlig <aszlig@nix.build>
Cc: @Ekleog
We're going to make changes to the dhparams module so we really want to
make sure we don't break it, so having a NixOS VM test is to make sure
we don't blow things up and can iterate on it.
Signed-off-by: aszlig <aszlig@nix.build>
Cc: @Ekleog
xdotool failed in rare cases when a window was already created
but not yet decorated by the window manager.
also prevent a (never observed but possible) race condition
HA doesn't mind the configuration being JSON instead of YAML but since YAML is
the official language, use that as it allows users to easily exchange config
data with other parties in the community.
The commit c6f7d43678 changed the system
attribute to be below config.nixpkgs.localSystem, but the test still
uses the old attribute.
I have not tested whether the test actually succeeds but just checked
whether evaluation works and it evaluates successfully now.
Signed-off-by: aszlig <aszlig@nix.build>
This patch is heavily inspired by bd0d8ed807 which added
a setcap wrapper for `mtr` in order to allow running `mtr` without
`sudo`. The need for the capability `cap_net_raw` that can be registered using
`setcap` has been documented in the Arch Wiki: https://wiki.archlinux.org/index.php/Capabilities#iftop
A simple testcase has been added which starts two machines, one with a
setcap wrapper for `iftop`, one without. Both testcases monitor the
bandwidth usage of the machine using the options `-t -s 1` once, the
machine with setcap wrapper is expected to succeed, the `iftop` on the
machine without setcap wrapper is expected to return a non-zero exit
code.
