* Remove nixos-deploy-network. It has been superceded by Charon.
svn path=/nixos/trunk/; revision=33662
This commit is contained in:
Eelco Dolstra
parent
6e7859814c
commit
301c4d96b1
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<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-deploy-network</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-deploy-network</command></refname>
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<refpurpose>deploy a network of NixOS configurations into a network of machines</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>nixos-deploy-network</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 automatically deploys a network of NixOS
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configurations into a network of machines.
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First, it tries to build all the system derivations defined
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in the network expression. Then it efficiently transfers
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the closures to the machines in the network. Finally, the configurations
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are activated. In case of a failure, a rollback is performed,
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which brings all the updated configurations back into the previous
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state.</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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@ -26,6 +26,6 @@
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<xi:include href="man-configuration.xml" />
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<xi:include href="man-nixos-rebuild.xml" />
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<xi:include href="man-nixos-option.xml" />
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<xi:include href="man-nixos-deploy-network.xml" />
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<xi:include href="man-nixos-build-vms.xml" />
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</reference>
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@ -1,121 +0,0 @@
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{ nixos ? /etc/nixos/nixos
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, nixpkgs ? /etc/nixos/nixpkgs
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, networkExprs
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, targetProperty ? "targetHost"
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}:
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let
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pkgs = import nixpkgs {};
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inherit (builtins) attrNames getAttr listToAttrs;
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inherit (pkgs.lib) concatMapStrings zipAttrs;
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networks = map (networkExpr: import networkExpr) networkExprs;
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network = zipAttrs networks;
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generateRollbackSucceededPhase = network: configs:
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concatMapStrings (configurationName:
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let
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config = getAttr configurationName configs;
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in
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''
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if [ "$rollback" != "$succeeded" ]
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then
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ssh $NIX_SSHOPTS ${getAttr targetProperty (config.deployment)} nix-env -p /nix/var/nix/profiles/system --rollback
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ssh $NIX_SSHOPTS ${getAttr targetProperty (config.deployment)} /nix/var/nix/profiles/system/bin/switch-to-configuration switch
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rollback=$((rollback + 1))
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fi
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''
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) (attrNames network)
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;
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generateDistributionPhase = network: configs:
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concatMapStrings (configurationName:
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let
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config = getAttr configurationName configs;
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in
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''
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echo "=== copy system closure to ${getAttr targetProperty (config.deployment)} ==="
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nix-copy-closure --to ${getAttr targetProperty (config.deployment)} ${config.system.build.toplevel}
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''
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) (attrNames network)
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;
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generateActivationPhase = network: configs:
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concatMapStrings (configurationName:
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let
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config = getAttr configurationName configs;
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in
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''
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echo "=== activating system configuration on ${getAttr targetProperty (config.deployment)} ==="
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ssh $NIX_SSHOPTS ${getAttr targetProperty (config.deployment)} nix-env -p /nix/var/nix/profiles/system --set ${config.system.build.toplevel} ||
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(ssh $NIX_SSHOPTS ${getAttr targetProperty (config.deployment)} nix-env -p /nix/var/nix/profiles/system --rollback; rollbackSucceeded)
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ssh $NIX_SSHOPTS ${getAttr targetProperty (config.deployment)} /nix/var/nix/profiles/system/bin/switch-to-configuration switch ||
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( ssh $NIX_SSHOPTS ${getAttr targetProperty (config.deployment)} nix-env -p /nix/var/nix/profiles/system --rollback
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ssh $NIX_SSHOPTS ${getAttr targetProperty (config.deployment)} /nix/var/nix/profiles/system/bin/switch-to-configuration switch
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rollbackSucceeded
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)
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succeeded=$((succeeded + 1))
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''
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) (attrNames network)
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;
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evaluateMachines = network:
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listToAttrs (map (configurationName:
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let
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modules = getAttr configurationName network;
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in
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{ name = configurationName;
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value = (import "${nixos}/lib/eval-config.nix" {
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inherit nixpkgs;
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modules =
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modules ++
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[ # Provide a default hostname and deployment target equal
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# to the attribute name of the machine in the model.
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{ key = "set-default-hostname";
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networking.hostName = pkgs.lib.mkOverride 900 configurationName;
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deployment.targetHost = pkgs.lib.mkOverride 900 configurationName;
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}
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];
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extraArgs = { nodes = evaluateMachines network; };
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}).config; }
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) (attrNames (network)));
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configs = evaluateMachines network;
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in
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pkgs.stdenv.mkDerivation {
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name = "deploy-script";
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# This script has a zillion dependencies and is trivial to build, so
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# we don't want to build it remotely.
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preferLocalBuild = true;
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buildCommand =
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''
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ensureDir $out/bin
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cat > $out/bin/deploy-systems << "EOF"
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#! ${pkgs.stdenv.shell} -e
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rollbackSucceeded()
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{
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rollback=0
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${generateRollbackSucceededPhase network configs}
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}
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# Distribution phase
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${generateDistributionPhase network configs}
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# Activation phase
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succeeded=0
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${generateActivationPhase network configs}
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EOF
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chmod +x $out/bin/deploy-systems
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'';
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}
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@ -1,70 +0,0 @@
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#! @shell@ -e
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# Shows the usage of this command to the user
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showUsage()
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{
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echo "Usage: $0 network_expr [network_expr2 ...]"
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echo "Options:"
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echo
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echo "--show-trace Shows an output trace"
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echo "--no-out-link Do not create a 'result' symlink"
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echo "-h,--help Shows the usage of this command"
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}
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# Parse valid argument options
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PARAMS=`getopt -n $0 -o h -l show-trace,no-out-link,help -- "$@"`
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if [ $? != 0 ]
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then
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showUsage
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exit 1
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fi
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eval set -- "$PARAMS"
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# Evaluate valid options
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while [ "$1" != "--" ]
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do
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case "$1" in
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--show-trace)
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showTraceArg="--show-trace"
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;;
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--no-out-link)
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noOutLinkArg="--no-out-link"
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;;
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-h|--help)
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showUsage
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exit 0
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;;
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esac
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shift
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done
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shift
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# Validate the given options
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if [ -z "$NIXOS" ]
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then
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NIXOS=/etc/nixos/nixos
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fi
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if [ "$@" = "" ]
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then
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echo "ERROR: At least one network Nix expression must be specified!" >&2
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exit 1
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else
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for i in $@
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do
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networkExprs="$networkExprs \"$(readlink -f $i)\""
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done
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fi
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# Deploy the network
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vms=`nix-build $NIXOS/modules/installer/tools/nixos-deploy-network/deploy.nix --arg networkExprs "[ $networkExprs ]" --argstr nixos $NIXOS $showTraceArg $noOutLinkArg`
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$vms/bin/deploy-systems
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src = ./nixos-build-vms/nixos-build-vms.sh;
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};
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nixosDeployNetwork = makeProg {
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name = "nixos-deploy-network";
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src = ./nixos-deploy-network/nixos-deploy-network.sh;
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};
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nixosInstall = makeProg {
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name = "nixos-install";
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src = ./nixos-install.sh;
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