machine containing a replica (minus the state) of the system
configuration. This is mostly useful for testing configuration
changes prior to doing an actual "nixos-rebuild switch" (or even
"nixos-rebuild test"). The VM can be started as follows:
$ nixos-rebuild build-vm
$ ./result/bin/run-*-vm
which starts a KVM/QEMU instance. Additional QEMU options can be
passed through the QEMU_OPTS environment variable
(e.g. QEMU_OPTS="-redir tcp:8080::80" to forward a host port to the
guest). The fileSystem attribute of the regular system
configuration is ignored (using mkOverride), because obviously we
can't allow the VM to access the host's block devices. Instead, at
startup the VM creates an empty disk image in ./<hostname>.qcow2 to
store the VM's root filesystem.
Building a VM in this way is efficient because the VM shares its Nix
store with the host (through a CIFS mount). However, because the
Nix store of the host is mounted read-only in the guest, you cannot
run Nix build actions inside the VM. Therefore the VM can only be
reconfigured by re-running "nixos-rebuild build-vm" on the host and
restarting the VM.
svn path=/nixos/trunk/; revision=16662
* Simplified the udev rules generation: merged nixRules into
services.udev.extraRules, and handle services.udev.extraRules using
services.udev.packages.
svn path=/nixos/trunk/; revision=16655
With these modifications, a user can configure a tomcat instance with web applications and web services by writing a service, such as:
...
services = {
tomcat = {
enable = true;
webapps = [ mypkgs.HelloWorldWebApplication ];
axis2 = {
enable = true;
services = [ mypkgs.HelloService mypkgs.HelloWorldService ];
};
};
};
svn path=/nixos/trunk/; revision=16619
(e.g. --install-grub instead of $NIXOS_INSTALL_GRUB). Also support
some nix-build options (e.g. --show-trace and -j).
svn path=/nixos/branches/modular-nixos/; revision=16560
gets rid of endless dhclient log messages such as
Jul 16 19:09:30 dutibo dhclient: DHCPDISCOVER on wmaster0 to 255.255.255.255 port 67 interval 19
Jul 16 19:09:30 dutibo dhclient: send_packet: Network is down
svn path=/nixos/branches/modular-nixos/; revision=16407
* Simplified the pre-start script of the network-interfaces module.
* Removed wireless support from the network-interfaces module. It
only worked for static WEP configurations anyway, and AFAIK nobody
used it.
svn path=/nixos/branches/modular-nixos/; revision=16406
broken httpd.conf to be generated. We should really have a merge
function that appends newlines to every value of options like
services.httpd.extraConfig.
svn path=/nixos/branches/modular-nixos/; revision=16404
jobs, e.g. (from the nscd job)
{ name = "nscd";
description = "Name Service Cache Daemon";
startOn = "startup";
stopOn = "shutdown";
environment = { LD_LIBRARY_PATH = nssModulesPath; };
preStart =
''
mkdir -m 0755 -p /var/run/nscd
mkdir -m 0755 -p /var/db/nscd
'';
exec = "${pkgs.glibc}/sbin/nscd -f ${./nscd.conf} -d 2> /dev/null";
};
The Upstart job is generated from this. The main goal is to provide
some abstraction from the Upstart syntax. For instance, this should
make it easier to upgrade to newer versions of Upstart, to switch to
an entirely different process management system (e.g. initng or
launchd), or to test a job independantly from Upstart. (However the
startOn and stopOn attributes are tied to Upstart's event model.)
svn path=/nixos/branches/modular-nixos/; revision=16376
