forked from mirrors/nixpkgs
418 lines
17 KiB
Nix
418 lines
17 KiB
Nix
# Test configuration switching.
|
|
|
|
import ./make-test-python.nix ({ pkgs, ...} : {
|
|
name = "switch-test";
|
|
meta = with pkgs.lib.maintainers; {
|
|
maintainers = [ gleber ];
|
|
};
|
|
|
|
nodes = {
|
|
machine = { config, pkgs, lib, ... }: {
|
|
environment.systemPackages = [ pkgs.socat ]; # for the socket activation stuff
|
|
users.mutableUsers = false;
|
|
|
|
specialisation = {
|
|
# A system with a simple socket-activated unit
|
|
simple-socket.configuration = {
|
|
systemd.services.socket-activated.serviceConfig = {
|
|
ExecStart = pkgs.writeScript "socket-test.py" /* python */ ''
|
|
#!${pkgs.python3}/bin/python3
|
|
|
|
from socketserver import TCPServer, StreamRequestHandler
|
|
import socket
|
|
|
|
class Handler(StreamRequestHandler):
|
|
def handle(self):
|
|
self.wfile.write("hello".encode("utf-8"))
|
|
|
|
class Server(TCPServer):
|
|
def __init__(self, server_address, handler_cls):
|
|
# Invoke base but omit bind/listen steps (performed by systemd activation!)
|
|
TCPServer.__init__(
|
|
self, server_address, handler_cls, bind_and_activate=False)
|
|
# Override socket
|
|
self.socket = socket.fromfd(3, self.address_family, self.socket_type)
|
|
|
|
if __name__ == "__main__":
|
|
server = Server(("localhost", 1234), Handler)
|
|
server.serve_forever()
|
|
'';
|
|
};
|
|
systemd.sockets.socket-activated = {
|
|
wantedBy = [ "sockets.target" ];
|
|
listenStreams = [ "/run/test.sock" ];
|
|
socketConfig.SocketMode = lib.mkDefault "0777";
|
|
};
|
|
};
|
|
|
|
# The same system but the socket is modified
|
|
modified-socket.configuration = {
|
|
imports = [ config.specialisation.simple-socket.configuration ];
|
|
systemd.sockets.socket-activated.socketConfig.SocketMode = "0666";
|
|
};
|
|
|
|
# The same system but the service is modified
|
|
modified-service.configuration = {
|
|
imports = [ config.specialisation.simple-socket.configuration ];
|
|
systemd.services.socket-activated.serviceConfig.X-Test = "test";
|
|
};
|
|
|
|
# The same system but both service and socket are modified
|
|
modified-service-and-socket.configuration = {
|
|
imports = [ config.specialisation.simple-socket.configuration ];
|
|
systemd.services.socket-activated.serviceConfig.X-Test = "some_value";
|
|
systemd.sockets.socket-activated.socketConfig.SocketMode = "0444";
|
|
};
|
|
|
|
# A system with a socket-activated service and some simple services
|
|
service-and-socket.configuration = {
|
|
imports = [ config.specialisation.simple-socket.configuration ];
|
|
systemd.services.simple-service = {
|
|
wantedBy = [ "multi-user.target" ];
|
|
serviceConfig = {
|
|
Type = "oneshot";
|
|
RemainAfterExit = true;
|
|
ExecStart = "${pkgs.coreutils}/bin/true";
|
|
};
|
|
};
|
|
|
|
systemd.services.simple-restart-service = {
|
|
stopIfChanged = false;
|
|
wantedBy = [ "multi-user.target" ];
|
|
serviceConfig = {
|
|
Type = "oneshot";
|
|
RemainAfterExit = true;
|
|
ExecStart = "${pkgs.coreutils}/bin/true";
|
|
};
|
|
};
|
|
|
|
systemd.services.simple-reload-service = {
|
|
reloadIfChanged = true;
|
|
wantedBy = [ "multi-user.target" ];
|
|
serviceConfig = {
|
|
Type = "oneshot";
|
|
RemainAfterExit = true;
|
|
ExecStart = "${pkgs.coreutils}/bin/true";
|
|
ExecReload = "${pkgs.coreutils}/bin/true";
|
|
};
|
|
};
|
|
|
|
systemd.services.no-restart-service = {
|
|
restartIfChanged = false;
|
|
wantedBy = [ "multi-user.target" ];
|
|
serviceConfig = {
|
|
Type = "oneshot";
|
|
RemainAfterExit = true;
|
|
ExecStart = "${pkgs.coreutils}/bin/true";
|
|
};
|
|
};
|
|
};
|
|
|
|
# The same system but with an activation script that restarts all services
|
|
restart-and-reload-by-activation-script.configuration = {
|
|
imports = [ config.specialisation.service-and-socket.configuration ];
|
|
system.activationScripts.restart-and-reload-test = {
|
|
supportsDryActivation = true;
|
|
deps = [];
|
|
text = ''
|
|
if [ "$NIXOS_ACTION" = dry-activate ]; then
|
|
f=/run/nixos/dry-activation-restart-list
|
|
else
|
|
f=/run/nixos/activation-restart-list
|
|
fi
|
|
cat <<EOF >> "$f"
|
|
simple-service.service
|
|
simple-restart-service.service
|
|
simple-reload-service.service
|
|
no-restart-service.service
|
|
socket-activated.service
|
|
EOF
|
|
'';
|
|
};
|
|
};
|
|
|
|
# A system with a timer
|
|
with-timer.configuration = {
|
|
systemd.timers.test-timer = {
|
|
wantedBy = [ "timers.target" ];
|
|
timerConfig.OnCalendar = "@1395716396"; # chosen by fair dice roll
|
|
};
|
|
systemd.services.test-timer = {
|
|
serviceConfig = {
|
|
Type = "oneshot";
|
|
ExecStart = "${pkgs.coreutils}/bin/true";
|
|
};
|
|
};
|
|
};
|
|
|
|
# The same system but with another time
|
|
with-timer-modified.configuration = {
|
|
imports = [ config.specialisation.with-timer.configuration ];
|
|
systemd.timers.test-timer.timerConfig.OnCalendar = lib.mkForce "Fri 2012-11-23 16:00:00";
|
|
};
|
|
|
|
# A system with a systemd mount
|
|
with-mount.configuration = {
|
|
systemd.mounts = [
|
|
{
|
|
description = "Testmount";
|
|
what = "tmpfs";
|
|
type = "tmpfs";
|
|
where = "/testmount";
|
|
options = "size=1M";
|
|
wantedBy = [ "local-fs.target" ];
|
|
}
|
|
];
|
|
};
|
|
|
|
# The same system but with another time
|
|
with-mount-modified.configuration = {
|
|
systemd.mounts = [
|
|
{
|
|
description = "Testmount";
|
|
what = "tmpfs";
|
|
type = "tmpfs";
|
|
where = "/testmount";
|
|
options = "size=10M";
|
|
wantedBy = [ "local-fs.target" ];
|
|
}
|
|
];
|
|
};
|
|
|
|
# A system with a path unit
|
|
with-path.configuration = {
|
|
systemd.paths.test-watch = {
|
|
wantedBy = [ "paths.target" ];
|
|
pathConfig.PathExists = "/testpath";
|
|
};
|
|
systemd.services.test-watch = {
|
|
serviceConfig = {
|
|
Type = "oneshot";
|
|
ExecStart = "${pkgs.coreutils}/bin/touch /testpath-modified";
|
|
};
|
|
};
|
|
};
|
|
|
|
# The same system but watching another file
|
|
with-path-modified.configuration = {
|
|
imports = [ config.specialisation.with-path.configuration ];
|
|
systemd.paths.test-watch.pathConfig.PathExists = lib.mkForce "/testpath2";
|
|
};
|
|
|
|
# A system with a slice
|
|
with-slice.configuration = {
|
|
systemd.slices.testslice.sliceConfig.MemoryMax = "1"; # don't allow memory allocation
|
|
systemd.services.testservice = {
|
|
serviceConfig = {
|
|
Type = "oneshot";
|
|
RemainAfterExit = true;
|
|
ExecStart = "${pkgs.coreutils}/bin/true";
|
|
Slice = "testslice.slice";
|
|
};
|
|
};
|
|
};
|
|
|
|
# The same system but the slice allows to allocate memory
|
|
with-slice-non-crashing.configuration = {
|
|
imports = [ config.specialisation.with-slice.configuration ];
|
|
systemd.slices.testslice.sliceConfig.MemoryMax = lib.mkForce null;
|
|
};
|
|
};
|
|
};
|
|
other = { ... }: {
|
|
users.mutableUsers = true;
|
|
};
|
|
};
|
|
|
|
testScript = { nodes, ... }: let
|
|
originalSystem = nodes.machine.config.system.build.toplevel;
|
|
otherSystem = nodes.other.config.system.build.toplevel;
|
|
|
|
# Ensures failures pass through using pipefail, otherwise failing to
|
|
# switch-to-configuration is hidden by the success of `tee`.
|
|
stderrRunner = pkgs.writeScript "stderr-runner" ''
|
|
#! ${pkgs.runtimeShell}
|
|
set -e
|
|
set -o pipefail
|
|
exec env -i "$@" | tee /dev/stderr
|
|
'';
|
|
in /* python */ ''
|
|
def switch_to_specialisation(name, action="test"):
|
|
out = machine.succeed(f"${originalSystem}/specialisation/{name}/bin/switch-to-configuration {action} 2>&1")
|
|
assert_lacks(out, "switch-to-configuration line") # Perl warnings
|
|
return out
|
|
|
|
def assert_contains(haystack, needle):
|
|
if needle not in haystack:
|
|
print("The haystack that will cause the following exception is:")
|
|
print("---")
|
|
print(haystack)
|
|
print("---")
|
|
raise Exception(f"Expected string '{needle}' was not found")
|
|
|
|
def assert_lacks(haystack, needle):
|
|
if needle in haystack:
|
|
print("The haystack that will cause the following exception is:")
|
|
print("---")
|
|
print(haystack, end="")
|
|
print("---")
|
|
raise Exception(f"Unexpected string '{needle}' was found")
|
|
|
|
|
|
machine.succeed(
|
|
"${stderrRunner} ${originalSystem}/bin/switch-to-configuration test"
|
|
)
|
|
machine.succeed(
|
|
"${stderrRunner} ${otherSystem}/bin/switch-to-configuration test"
|
|
)
|
|
|
|
with subtest("systemd sockets"):
|
|
machine.succeed("${originalSystem}/bin/switch-to-configuration test")
|
|
|
|
# Simple socket is created
|
|
out = switch_to_specialisation("simple-socket")
|
|
assert_lacks(out, "stopping the following units:")
|
|
# not checking for reload because dbus gets reloaded
|
|
assert_lacks(out, "restarting the following units:")
|
|
assert_lacks(out, "\nstarting the following units:")
|
|
assert_contains(out, "the following new units were started: socket-activated.socket\n")
|
|
assert_lacks(out, "as well:")
|
|
machine.succeed("[ $(stat -c%a /run/test.sock) = 777 ]")
|
|
|
|
# Changing the socket restarts it
|
|
out = switch_to_specialisation("modified-socket")
|
|
assert_lacks(out, "stopping the following units:")
|
|
#assert_lacks(out, "reloading the following units:")
|
|
assert_contains(out, "restarting the following units: socket-activated.socket\n")
|
|
assert_lacks(out, "\nstarting the following units:")
|
|
assert_lacks(out, "the following new units were started:")
|
|
assert_lacks(out, "as well:")
|
|
machine.succeed("[ $(stat -c%a /run/test.sock) = 666 ]") # change was applied
|
|
|
|
# The unit is properly activated when the socket is accessed
|
|
if machine.succeed("socat - UNIX-CONNECT:/run/test.sock") != "hello":
|
|
raise Exception("Socket was not properly activated")
|
|
|
|
# Changing the socket restarts it and ignores the active service
|
|
out = switch_to_specialisation("simple-socket")
|
|
assert_contains(out, "stopping the following units: socket-activated.service\n")
|
|
assert_lacks(out, "reloading the following units:")
|
|
assert_contains(out, "restarting the following units: socket-activated.socket\n")
|
|
assert_lacks(out, "\nstarting the following units:")
|
|
assert_lacks(out, "the following new units were started:")
|
|
assert_lacks(out, "as well:")
|
|
machine.succeed("[ $(stat -c%a /run/test.sock) = 777 ]") # change was applied
|
|
|
|
# Changing the service does nothing when the service is not active
|
|
out = switch_to_specialisation("modified-service")
|
|
assert_lacks(out, "stopping the following units:")
|
|
assert_lacks(out, "reloading the following units:")
|
|
assert_lacks(out, "restarting the following units:")
|
|
assert_lacks(out, "\nstarting the following units:")
|
|
assert_lacks(out, "the following new units were started:")
|
|
assert_lacks(out, "as well:")
|
|
|
|
# Activating the service and modifying it stops it but leaves the socket untouched
|
|
machine.succeed("socat - UNIX-CONNECT:/run/test.sock")
|
|
out = switch_to_specialisation("simple-socket")
|
|
assert_contains(out, "stopping the following units: socket-activated.service\n")
|
|
assert_lacks(out, "reloading the following units:")
|
|
assert_lacks(out, "restarting the following units:")
|
|
assert_lacks(out, "\nstarting the following units:")
|
|
assert_lacks(out, "the following new units were started:")
|
|
assert_lacks(out, "as well:")
|
|
|
|
# Activating the service and both the service and the socket stops the service and restarts the socket
|
|
machine.succeed("socat - UNIX-CONNECT:/run/test.sock")
|
|
out = switch_to_specialisation("modified-service-and-socket")
|
|
assert_contains(out, "stopping the following units: socket-activated.service\n")
|
|
assert_lacks(out, "reloading the following units:")
|
|
assert_contains(out, "restarting the following units: socket-activated.socket\n")
|
|
assert_lacks(out, "\nstarting the following units:")
|
|
assert_lacks(out, "the following new units were started:")
|
|
assert_lacks(out, "as well:")
|
|
|
|
with subtest("restart and reload by activation file"):
|
|
out = switch_to_specialisation("service-and-socket")
|
|
# Switch to a system where the example services get restarted
|
|
# by the activation script
|
|
out = switch_to_specialisation("restart-and-reload-by-activation-script")
|
|
assert_lacks(out, "stopping the following units:")
|
|
assert_contains(out, "stopping the following units as well: simple-service.service, socket-activated.service\n")
|
|
assert_contains(out, "reloading the following units: simple-reload-service.service\n")
|
|
assert_contains(out, "restarting the following units: simple-restart-service.service\n")
|
|
assert_contains(out, "\nstarting the following units: simple-service.service")
|
|
|
|
# The same, but in dry mode
|
|
switch_to_specialisation("service-and-socket")
|
|
out = switch_to_specialisation("restart-and-reload-by-activation-script", action="dry-activate")
|
|
assert_lacks(out, "would stop the following units:")
|
|
assert_contains(out, "would stop the following units as well: simple-service.service, socket-activated.service\n")
|
|
assert_contains(out, "would reload the following units: simple-reload-service.service\n")
|
|
assert_contains(out, "would restart the following units: simple-restart-service.service\n")
|
|
assert_contains(out, "\nwould start the following units: simple-service.service")
|
|
|
|
with subtest("mounts"):
|
|
switch_to_specialisation("with-mount")
|
|
out = machine.succeed("mount | grep 'on /testmount'")
|
|
assert_contains(out, "size=1024k")
|
|
|
|
out = switch_to_specialisation("with-mount-modified")
|
|
assert_lacks(out, "stopping the following units:")
|
|
assert_contains(out, "reloading the following units: testmount.mount\n")
|
|
assert_lacks(out, "restarting the following units:")
|
|
assert_lacks(out, "\nstarting the following units:")
|
|
assert_lacks(out, "the following new units were started:")
|
|
assert_lacks(out, "as well:")
|
|
# It changed
|
|
out = machine.succeed("mount | grep 'on /testmount'")
|
|
assert_contains(out, "size=10240k")
|
|
|
|
with subtest("timers"):
|
|
switch_to_specialisation("with-timer")
|
|
out = machine.succeed("systemctl show test-timer.timer")
|
|
assert_contains(out, "OnCalendar=2014-03-25 02:59:56 UTC")
|
|
|
|
out = switch_to_specialisation("with-timer-modified")
|
|
assert_lacks(out, "stopping the following units:")
|
|
assert_lacks(out, "reloading the following units:")
|
|
assert_contains(out, "restarting the following units: test-timer.timer\n")
|
|
assert_lacks(out, "\nstarting the following units:")
|
|
assert_lacks(out, "the following new units were started:")
|
|
assert_lacks(out, "as well:")
|
|
# It changed
|
|
out = machine.succeed("systemctl show test-timer.timer")
|
|
assert_contains(out, "OnCalendar=Fri 2012-11-23 16:00:00")
|
|
|
|
with subtest("paths"):
|
|
switch_to_specialisation("with-path")
|
|
machine.fail("test -f /testpath-modified")
|
|
|
|
# touch the file, unit should be triggered
|
|
machine.succeed("touch /testpath")
|
|
machine.wait_until_succeeds("test -f /testpath-modified")
|
|
|
|
machine.succeed("rm /testpath /testpath-modified")
|
|
switch_to_specialisation("with-path-modified")
|
|
|
|
machine.succeed("touch /testpath")
|
|
machine.fail("test -f /testpath-modified")
|
|
machine.succeed("touch /testpath2")
|
|
machine.wait_until_succeeds("test -f /testpath-modified")
|
|
|
|
# This test ensures that changes to slice configuration get applied.
|
|
# We test this by having a slice that allows no memory allocation at
|
|
# all and starting a service within it. If the service crashes, the slice
|
|
# is applied and if we modify the slice to allow memory allocation, the
|
|
# service should successfully start.
|
|
with subtest("slices"):
|
|
machine.succeed("echo 0 > /proc/sys/vm/panic_on_oom") # allow OOMing
|
|
out = switch_to_specialisation("with-slice")
|
|
machine.fail("systemctl start testservice.service")
|
|
out = switch_to_specialisation("with-slice-non-crashing")
|
|
machine.succeed("systemctl start testservice.service")
|
|
machine.succeed("echo 1 > /proc/sys/vm/panic_on_oom") # disallow OOMing
|
|
|
|
'';
|
|
})
|