nixos/tests/initrd-openvpn: Add test for openvpn in the initramfs
The module in this commit adds new options that allows the
integration of an OpenVPN client into the initrd.
This can be used e.g. to remotely unlock LUKS devices.
This commit also adds two tests for `boot.initrd.network.openvpn`.
The first one is a basic test to validate that a failing connection
does not prevent the machine from booting.
The second test validates that this module actually creates a valid
openvpn connection.
For this, it spawns three nodes:
- The client that uses boot.initrd.network.openvpn
- An OpenVPN server that acts as gateway and forwards a port
to the client
- A node that is external to the OpenVPN network
The client connects to the OpenVPN server and spawns a netcat instance
that echos a value to every client.
Afterwards, the external node checks if it receives this value over the
forwarded port on the OpenVPN gateway.
test failed because gnutls-cli does not properly report connection
errors any more, fixed by increasing the debug level for gnutls-cli
Fixes: #84507
Closes: #90718
This option exposes the prefconfigured nextcloud-occ
program. nextcloud-occ can then be used in other systemd services or
added in environment.systemPackages.
The nextcloud test shows how it can be add in
environment.systemPackages.
Done by setting `autopilot.min_quorum = 3`.
Techncially, this would have been required to keep the test correct since
Consul's "autopilot" "Dead Server Cleanup" was enabled by default (I believe
that was in Consul 0.8). Practically, the issue only occurred with our NixOS
test with releases >= `1.7.0-beta2` (see #90613). The setting itself is
available since Consul 1.6.2.
However, this setting was not documented clearly enough for anybody to notice,
and only the upstream issue https://github.com/hashicorp/consul/issues/8118
I filed brought that to light.
As explained there, the test could also have been made pass by applying the
more correct rolling reboot procedure
-m.wait_until_succeeds("[ $(consul members | grep -o alive | wc -l) == 5 ]")
+m.wait_until_succeeds(
+ "[ $(consul operator raft list-peers | grep true | wc -l) == 3 ]"
+)
but we also intend to test that Consul can regain consensus even if
the quorum gets temporarily broken.
