remote-builders -> known-hosts, add aliases

flake.nix

@@ -272,7 +272,7 @@
       p1005       = ./hardware/printer/hp-laserjet-p1005.nix;
       au          = ./profiles/auto-upgrade.nix;
       ts          = ./profiles/tailscale.nix;
-      #rb          = ./profiles/remote-builders.nix; # TODO
+      #rb          = ./profiles/known-hosts.nix; # TODO
       nixld       = ./profiles/nix-ld.nix;
       dns64       = { config, ... }: {
         networking.nameservers = [ "2001:700:1:11::2:51" ]; # dns64.uninett.no

hosts/bjarte/configuration.nix

@@ -35,7 +35,7 @@
     ../../profiles/desktop/flatpak.nix
     ../../profiles/desktop/waydroid.nix
 
-    ../../profiles/remote-builders.nix
+    ../../profiles/known-hosts.nix
     #../../profiles/autossh-reverse-tunnels
   ];
 

hosts/bolle/configuration.nix

@@ -22,7 +22,7 @@
     ../../profiles/shell.nix
 
     ../../profiles/domeneshop-dyndns.nix
-    ../../profiles/remote-builders.nix
+    ../../profiles/known-hosts.nix
     #../../profiles/autossh-reverse-tunnels
   ];
   services.domeneshop-updater.targets = [ config.networking.fqdn ];

hosts/brumlebasse/configuration.nix

@@ -19,7 +19,7 @@
     ../../profiles/shell.nix
 
     #../../profiles/domeneshop-dyndns.nix
-    ../../profiles/remote-builders.nix
+    ../../profiles/known-hosts.nix
   ];
   #services.domeneshop-updater.targets = [ config.networking.fqdn ];
 

hosts/eple/configuration.nix

@@ -19,7 +19,7 @@
     ../../profiles/shell.nix
 
     ../../profiles/domeneshop-dyndns.nix
-    ../../profiles/remote-builders.nix
+    ../../profiles/known-hosts.nix
     #../../profiles/autossh-reverse-tunnels
   ];
   services.domeneshop-updater.targets = [ config.networking.fqdn ];

hosts/garp/configuration.nix

@@ -46,7 +46,7 @@
     #../../profiles/desktop/sound/pipewire.nix
 
     ../../profiles/domeneshop-dyndns.nix
-    ../../profiles/remote-builders.nix
+    ../../profiles/known-hosts.nix
   ];
   services.domeneshop-updater.targets = [ config.networking.fqdn ];
 

hosts/hasselknippe/configuration.nix

@@ -33,7 +33,7 @@
     #../../profiles/desktop/lutris.nix
     #../../profiles/desktop/flatpak.nix
 
-    ../../profiles/remote-builders.nix
+    ../../profiles/known-hosts.nix
   ];
 
   networking.firewall.allowedTCPPorts = [ 57621 ]; # spotify local discovery

hosts/known-hosts.toml

@@ -1,6 +1,7 @@
 # primarily used for remote builders, but also configures known public keys
 
 #["host.name"]
+# aliases = ["other.host.name"]
 # https://search.nixos.org/options?query=nix.buildMachine
 # buildMachine.systems
 # buildMachine.maxJobs
@@ -14,6 +15,8 @@
 # ssh.userPublicKey   # sudo ssh-keygen -t ed25519 && sudo cat /root/.ssh/id_ed25519.pub
 # ssh.proxyJump      # optional hostname
 # ssh.userPrivateKey # optional IdentityFile to use
+# ssh.connectTimeout
+
 
 # buildMachine.supportedFeatures:
 #  - "kvm"          - has hypervisor
@@ -22,6 +25,7 @@
 #  - "big-parallel" - is beefy, for stuff like llvm
 
 [__default__]
+aliases = []
 buildMachine.systems = ["x86_64-linux", "i686-linux"]
 buildMachine.maxJobs = 0 # not a builder
 buildMachine.speedFactor = 1
@@ -31,6 +35,7 @@ buildMachine.protocol = "ssh" # "ssh-ng"
 ssh.listenUser = "pbsds" # TODO: change
 # ssh.listenUser = "nixbld-remote"
 ssh.listenPort = 22
+ssh.connectTimeout = 3
 
 # in general:
 #   headless:  one job per 4 threads and 8GB RAM
@@ -45,6 +50,7 @@ ssh.listenPublicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAILeOB/57N1fQPVorIUlkk
 ssh.proxyJump = "isvegg.pvv.ntnu.no"
 
 ["eple.pbsds.net"] # r9 290x
+aliases = [ "eple.tail9aac63.ts.net" ]
 buildMachine.maxJobs = 3 # 12 threads 32GB
 buildMachine.speedFactor = 3 # i7-5820K
 buildMachine.supportedFeatures = ["kvm", "big-parallel", "nixos-test"]
@@ -60,12 +66,14 @@ ssh.listenPublicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOkcZ3cUAKk8uUvZPsX7P
 ssh.proxyJump = "isvegg.pvv.ntnu.no"
 
 ["noximilien.pbsds.net"]
+aliases = [ "noximilien.tail9aac63.ts.net" ]
 # buildMachine.maxJobs = 1 # 8 threads 8GB
 buildMachine.speedFactor = 1 # i7-3770S
 ssh.listenPublicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJ3QhTGS03Sqm6OeCEz5AIGqJnBttKaBqMgNXp3Md7t4"
 ssh.userPublicKey = "ssh-rsa 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 root@noximilien"
 
 ["sopp.pbsds.net"] # gtx 1080
+aliases = [ "sopp.tail9aac63.ts.net" ]
 # buildMachine.maxJobs = 2 # 8 threads 32GB
 buildMachine.speedFactor = 2 # i7-4790K
 buildMachine.supportedFeatures = ["kvm", "nixos-test", "cuda"]
@@ -74,6 +82,7 @@ ssh.listenPublicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDYB9H1pHB1vTBiGhO/GC
 ssh.userPublicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIL6eTQkxO/1XflHpGf3478+Z7HFYYaf1d4M6mvSK2nAU root@sopp"
 
 ["nord.pbsds.net"] # rx 580
+aliases = [ "nord.tail9aac63.ts.net" ]
 # buildMachine.maxJobs = 1 # 4 threads 32GB
 buildMachine.speedFactor = 1 # i5-2500
 buildMachine.supportedFeatures = ["kvm", "nixos-test"]
@@ -88,6 +97,7 @@ ssh.listenUser = "pbsds"
 ssh.listenPublicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGDuWdqEQ5mmVjuKi6f/Q2PFxuqB3URpgTHid06Vw7we"
 
 ["bjarte.pbsds.net"]
+aliases = [ "bjarte.tail9aac63.ts.net" ]
 ssh.userPublicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIF4v1+FbiEa6Mohpf3/Una5ahKeKSG9yZ9iU5TC7ddL5 root@bjarte"
 
 ["brumlebasse.pbsds.net"]

hosts/nord/configuration.nix

@@ -40,7 +40,7 @@
     ../../profiles/desktop/steam.nix
     ../../profiles/desktop/flatpak.nix
 
-    ../../profiles/remote-builders.nix
+    ../../profiles/known-hosts.nix
     #../../profiles/autossh-reverse-tunnels
     #../../profiles/domeneshop-dyndns.nix # handled by noximilien
   ];

hosts/noximilien/configuration.nix

@@ -90,7 +90,7 @@
 
     #../../profiles/code-remote # TODO: move into web? services?
     ../../profiles/domeneshop-dyndns.nix
-    ../../profiles/remote-builders.nix
+    ../../profiles/known-hosts.nix
     ../../profiles/autossh-reverse-tunnels
     #../../profiles/xrdp
   ];

hosts/sopp/configuration.nix

@@ -49,7 +49,7 @@
     ../../profiles/desktop/lutris.nix
     ../../profiles/desktop/flatpak.nix
 
-    ../../profiles/remote-builders.nix
+    ../../profiles/known-hosts.nix
     #../../profiles/autossh-reverse-tunnels
     #../../profiles/domeneshop-dyndns.nix # handled by noximilien
   ];

profiles/known-hosts.nix

@@ -1,19 +1,36 @@
 { config, lib, ... }:
 
 # TODO: make a remote-build user on nixos boxes, instead of giving access to pbsds
-# TODO: https://exozy.me/quickstart
+# TODO: https://exozy.me/about
-# TODO: https://github.com/winterqt/darwin-build-box
 
 let
   inherit (builtins) map fromTOML readFile elem attrNames attrValues;
   inherit (lib) mkIf;
 
+  known-hosts = let
     known-hosts' = lib.importTOML ../hosts/known-hosts.toml; # TODO: eww
-  known-hosts = lib.pipe known-hosts' [
+  in
+    lib.pipe known-hosts' [
       (lib.flip lib.removeAttrs ["__default__"])
-    (lib.mapAttrs (name: host:
+      (lib.mapAttrs (fqdn: host:
-      lib.recursiveUpdate (known-hosts'."__default__" or {}) host
+        lib.recursiveUpdate (
+          (known-hosts'."__default__" or {})
+          // { isAlias = false; }
+        ) host
       ))
+      (lib.mapAttrsToList (fqdn: host: let
+          allHostnames = [ fqdn ] ++ host.aliases;
+        in lib.forEach allHostnames (alias:
+          lib.nameValuePair
+            alias
+            (host // {
+              aliases = lib.remove alias allHostnames;
+              isAlias = fqdn != alias;
+            })
+        )
+      ))
+      lib.flatten
+      lib.listToAttrs
     ];
   hostNames = attrNames known-hosts;
   thisHost = known-hosts.${config.networking.fqdn};
@@ -30,12 +47,18 @@ let
     };
     thatHostIsBuilder = thatHost.buildMachine.maxJobs > 0;
     thatHostIsConsumer = thatHost.ssh ? userPublicKey && thisHostIsBuilder;
-    thatHostIsThis = fqdn == config.networking.fqdn;
+    thatHostIsThis = builtins.elem config.networking.fqdn ([ fqdn ] ++ thatHost.aliases);
   in mkIf (!thatHostIsThis) ( lib.mkMerge [
     # out
     (lib.mkIf (thisHostIsConsumer && thatHostIsBuilder) {
 
-      nix.buildMachines = [ buildMachine ];
+      # TODO: Allow setting speedFactor for local builds, as local is currently fixed to 0
+      # https://github.com/NixOS/nix/issues/2457
+
+      nix.distributedBuilds = true;
+      # useful when the builder has a faster internet connection than i do
+      nix.settings.builders-use-substitutes = true;
+      nix.buildMachines = lib.mkIf (!thatHost.isAlias) [ buildMachine ];
 
     })
     # out or jump
@@ -46,7 +69,7 @@ let
       # timeouts are great when remote is unresponsive. nix doesn't care, lix is way and tests each remote only once
       programs.ssh.extraConfig = ''
         Host ${fqdn}
-          ConnectTimeout 3
+          ConnectTimeout ${builtins.toString thatHost.ssh.connectTimeout}
           Port ${builtins.toString thatHost.ssh.listenPort}
           ${lib.optionalString (thatHost.ssh ? proxyJump) ''
             ProxyJump ${thatJump.ssh.listenUser}@${thatHost.ssh.proxyJump}:${builtins.toString thatJump.ssh.listenPort}
@@ -77,14 +100,6 @@ let
 
 in {
 
-  nix.distributedBuilds = true;
-
-  # TODO: Allow setting speedFactor for local builds, as local is currently fixed to 0
-  # https://github.com/NixOS/nix/issues/2457
-
-  # useful when the builder has a faster internet connection than i do
-  nix.settings.builders-use-substitutes = true;
-
   imports = lib.forEach hostNames mkRemoteConfig;
 
 }