mirror of
https://github.com/ilyakooo0/nixpkgs.git
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139 lines
4.1 KiB
XML
139 lines
4.1 KiB
XML
<refentry xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refmeta>
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<refentrytitle><command>nixos-build-vms</command>
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</refentrytitle><manvolnum>8</manvolnum>
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<refmiscinfo class="source">NixOS</refmiscinfo>
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<!-- <refmiscinfo class="version"><xi:include href="version.txt" parse="text"/></refmiscinfo> -->
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</refmeta>
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<refnamediv>
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<refname><command>nixos-build-vms</command></refname>
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<refpurpose>build a network of virtual machines from a network of NixOS configurations</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>nixos-build-vms</command>
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<arg>
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<option>--show-trace</option>
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</arg>
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<arg>
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<option>--no-out-link</option>
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</arg>
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<arg>
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<option>--help</option>
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</arg>
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<arg>
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<option>--option</option>
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<replaceable>name</replaceable>
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<replaceable>value</replaceable>
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</arg>
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<arg choice="plain">
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<replaceable>network.nix</replaceable>
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</arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsection>
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<title>Description</title>
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<para>
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This command builds a network of QEMU-KVM virtual machines of a Nix
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expression specifying a network of NixOS machines. The virtual network can
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be started by executing the <filename>bin/run-vms</filename> shell script
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that is generated by this command. By default, a <filename>result</filename>
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symlink is produced that points to the generated virtual network.
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</para>
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<para>
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A network Nix expression has the following structure:
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<screen>
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{
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test1 = {pkgs, config, ...}:
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{
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services.openssh.enable = true;
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nixpkgs.localSystem.system = "i686-linux";
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deployment.targetHost = "test1.example.net";
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# Other NixOS options
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};
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test2 = {pkgs, config, ...}:
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{
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services.openssh.enable = true;
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services.httpd.enable = true;
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environment.systemPackages = [ pkgs.lynx ];
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nixpkgs.localSystem.system = "x86_64-linux";
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deployment.targetHost = "test2.example.net";
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# Other NixOS options
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};
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}
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</screen>
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Each attribute in the expression represents a machine in the network (e.g.
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<varname>test1</varname> and <varname>test2</varname>) referring to a
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function defining a NixOS configuration. In each NixOS configuration, two
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attributes have a special meaning. The
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<varname>deployment.targetHost</varname> specifies the address (domain name
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or IP address) of the system which is used by <command>ssh</command> to
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perform remote deployment operations. The
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<varname>nixpkgs.localSystem.system</varname> attribute can be used to
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specify an architecture for the target machine, such as
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<varname>i686-linux</varname> which builds a 32-bit NixOS configuration.
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Omitting this property will build the configuration for the same
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architecture as the host system.
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</para>
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</refsection>
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<refsection>
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<title>Options</title>
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<para>
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This command accepts the following options:
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</para>
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<variablelist>
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<varlistentry>
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<term>
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<option>--show-trace</option>
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</term>
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<listitem>
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<para>
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Shows a trace of the output.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<option>--no-out-link</option>
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</term>
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<listitem>
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<para>
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Do not create a 'result' symlink.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<option>-h</option>, <option>--help</option>
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</term>
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<listitem>
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<para>
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Shows the usage of this command to the user.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<option>--option</option> <replaceable>name</replaceable> <replaceable>value</replaceable>
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</term>
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<listitem>
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<para>Set the Nix configuration option
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<replaceable>name</replaceable> to <replaceable>value</replaceable>.
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This overrides settings in the Nix configuration file (see
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<citerefentry><refentrytitle>nix.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>).
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsection>
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</refentry>
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