refactor(ops/machines/snix-cache): use new snix.store domain

Provide redirects when the old domain is accessed, which Nix seems to
follow.

We keep the same hostname, so historical node exporter graphs are still
visible.

Change-Id: Icecd7f5324ac25bbfd4c003ca9cc65681114f0b5
Reviewed-on: https://cl.snix.dev/c/snix/+/30484
Reviewed-by: edef <edef@edef.eu>
Tested-by: besadii
Autosubmit: Florian Klink <flokli@flokli.de>

ops/machines/snix-cache/README.md

@@ -1,4 +1,4 @@
-# nixos-tvix-cache
+# nixos-snix-cache
 
 This is a fetch-through mirror of cache.nixos.org, hosted by NumTide.
 
@@ -8,7 +8,7 @@ and 2x1TB NVMe disks.
 The goals of this machine:
 
  - Exercise snix-store and nar-bridge code
- - Collect usage metrics (see [Grafana](https://nixos.tvix.store/grafana))
+ - Collect usage metrics (see [Grafana](https://nixos.snix.store/grafana))
  - Identify bottlenecks in the current implementations and fix them
  - Replace cache.nixos.org?
 
@@ -16,7 +16,7 @@ You can configure this as a Nix substitutor on your systems like this:
 
 ```nix
   nix.settings.substituters = [
-    "https://nixos.tvix.store"
+    "https://nixos.snix.store"
   ];
 ```
 

ops/machines/snix-cache/default.nix

@@ -28,7 +28,7 @@ in
   options = {
     machine.domain = lib.mkOption {
       type = lib.types.str;
-      default = "nixos.tvix.store";
+      default = "nixos.snix.store";
     };
   };
 

ops/machines/snix-cache/nar-bridge.nix

@@ -3,7 +3,7 @@
   imports = [ ./nar-bridge-module.nix ];
 
   # Microbenchmark
-  # hyperfine --warmup 1 'rm -rf /tmp/cache; nix copy --from https://nixos.tvix.store/ --to "file:///tmp/cache?compression=none" /nix/store/jlkypcf54nrh4n6r0l62ryx93z752hb2-firefox-132.0'
+  # hyperfine --warmup 1 'rm -rf /tmp/cache; nix copy --from https://nixos.snix.store/ --to "file:///tmp/cache?compression=none" /nix/store/jlkypcf54nrh4n6r0l62ryx93z752hb2-firefox-132.0'
   services.nginx = {
     package = pkgs.nginxStable;
     virtualHosts.${config.machine.domain} = {
@@ -47,6 +47,11 @@
         rewrite ^/nar/tvix-castore/(.*)$ /nar/snix-castore/$1 redirect;
       '';
     };
+    virtualHosts."nixos.tvix.store" = {
+      forceSSL = true;
+      enableACME = true;
+      locations."/".return = "301 https://nixos.snix.store$request_uri";
+    };
 
     # use more cores for compression
     appendConfig = ''

ops/nixos.nix

@@ -44,7 +44,7 @@ in rec {
   public01System = nixosFor depot.ops.machines.public01;
   build01System = nixosFor depot.ops.machines.build01;
   meta01System = nixosFor depot.ops.machines.meta01;
-  nixosSnixCache = nixosFor depot.ops.machines.snix-cache;
+  nixosSnixCacheSystem = nixosFor depot.ops.machines.snix-cache;
 
   meta.ci.targets = [
     "archivistEC2System"