mirror of
https://github.com/ryan4yin/nix-config.git
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113 lines
3.3 KiB
Nix
113 lines
3.3 KiB
Nix
{ ... }: {
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####################################################################
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#
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# NixOS's Configuration for Remote Building / Distributed Building
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#
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# Related Docs:
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# 1. https://github.com/NixOS/nix/issues/7380
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# 2. https://nixos.wiki/wiki/Distributed_build
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####################################################################
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# set local's max-job to 0 to force remote building(disable local building)
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# nix.settings.max-jobs = 0;
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nix.distributedBuilds = true;
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nix.buildMachines =
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let
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sshUser = "ryan";
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# ssh key's path on local machine
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sshKey = "/home/ryan/.ssh/ai-idols";
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systems = [
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# native arch
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"x86_64-linux"
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# emulated arch using binfmt_misc and qemu-user
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"aarch64-linux"
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"riscv64-linux"
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];
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# all available system features are poorly documentd here:
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# https://github.com/NixOS/nix/blob/e503ead/src/libstore/globals.hh#L673-L687
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supportedFeatures = [
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"benchmark"
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"big-parallel"
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"kvm"
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];
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in
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[
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{
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# some of my remote builders are running NixOS
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# and has the same sshUser, sshKey, systems, etc.
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inherit sshUser sshKey systems supportedFeatures;
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# the hostName should be:
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# 1. a hostname that can be resolved by DNS
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# 2. the ip address of the remote builder
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# 3. a host alias defined globally in /etc/ssh/ssh_config
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hostName = "aquamarine";
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# remote builder's max-job
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maxJobs = 4;
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# speedFactor's a signed integer
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# nix seems always try to build on the machine with the highest speedFactor
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speedFactor = 1;
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}
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{
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inherit sshUser sshKey systems supportedFeatures;
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hostName = "ruby";
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maxJobs = 2;
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speedFactor = 1;
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}
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{
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inherit sshUser sshKey systems supportedFeatures;
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hostName = "kana";
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maxJobs = 2;
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speedFactor = 1;
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}
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];
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# optional, useful when the builder has a faster internet connection than yours
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nix.extraOptions = ''
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builders-use-substitutes = true
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'';
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# define the host alias for remote builders
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# this config will be written to /etc/ssh/ssh_config
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programs.ssh.extraConfig = ''
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Host ai
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HostName 192.168.5.100
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Port 22
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Host aquamarine
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HostName 192.168.5.101
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Port 22
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Host ruby
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HostName 192.168.5.102
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Port 22
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Host kana
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HostName 192.168.5.103
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Port 22
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'';
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# define the host key for remote builders so that nix can verify all the remote builders
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# this config will be written to /etc/ssh/ssh_known_hosts
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programs.ssh.knownHosts = {
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# 星野 愛久愛海, Hoshino Aquamarine
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aquamarine = {
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hostNames = [ "aquamarine" "192.168.5.101" ];
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publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDnCQXlllHoLX5EvU+t6yP/npsmuxKt0skHVeJashizE";
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};
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# 星野 瑠美衣, Hoshino Rubii
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ruby = {
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hostNames = [ "ruby" "192.168.5.102" ];
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publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICoIvsorGgnYpyunNrJfZ6Nyue7wBTx6LsyMOMrpgHJ/";
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};
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# 有馬 かな, Arima Kana
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kana = {
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hostNames = [ "kana" "192.168.5.103" ];
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publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIEuoNB0OSjCFyS022e+ZQCIsb/nhkw/XcWjksqK3sh5x";
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};
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};
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}
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