mirror of
https://github.com/ilyakooo0/nixpkgs.git
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111 lines
3.3 KiB
XML
111 lines
3.3 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></refentrytitle>
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<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><option>--show-trace</option></arg>
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<arg><option>--no-out-link</option></arg>
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<arg><option>--help</option></arg>
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<arg choice="plain"><replaceable>network.nix</replaceable></arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsection><title>Description</title>
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<para>This command builds a network of QEMU-KVM virtual machines of a Nix expression
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specifying a network of NixOS machines. The virtual network can be started by
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executing the <filename>bin/run-vms</filename> shell script that is generated by
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this command. By default, a <filename>result</filename> symlink is produced that
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points to the generated virtual network.
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</para>
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<para>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.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.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
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(e.g. <varname>test1</varname> and <varname>test2</varname>)
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referring to a function defining a NixOS configuration.
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In each NixOS configuration, two attributes have a special meaning.
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The <varname>deployment.targetHost</varname> specifies the address
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(domain name or IP address)
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of the system which is used by <command>ssh</command> to perform
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remote deployment operations. The <varname>nixpkgs.system</varname>
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attribute can be used to specify an architecture for the target machine,
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such as <varname>i686-linux</varname> which builds a 32-bit NixOS
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configuration. Omitting this property will build the configuration
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for the same architecture as the host system.
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</para>
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</refsection>
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<refsection><title>Options</title>
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<para>This command accepts the following options:</para>
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<variablelist>
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<varlistentry>
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<term><option>--show-trace</option></term>
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<listitem>
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<para>Shows a trace of the output.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--no-out-link</option></term>
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<listitem>
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<para>Do not create a 'result' symlink.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-h</option>, <option>--help</option></term>
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<listitem>
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<para>Shows the usage of this command to the user.</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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