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feat(users/flokli/nixos/nixos-tvix-cache): init

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This is a fetch-through mirror of cache.nixos.org, hosted by NumTide.

The current machine is a SX65 Hetzner dedicated server with 4x22TB SATA disks,
and 2x1TB NVMe disks.

The goals of this machine:

 - Exercise tvix-store and nar-bridge code
 - Collect usage metrics (see https://nixos.tvix.store/grafana)
 - Identify bottlenecks
 - Replace cache.nixos.org?

Be however aware that there's zero availability guarantees. Since Tvix doesn't
support garbage collection yet, we either will delete data or order a bigger
box.

Change-Id: Id24baa18cae1629a06caaa059c0c75d4a01659d5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12811
Tested-by: BuildkiteCI
Reviewed-by: Jonas Chevalier <zimbatm@zimbatm.com>
Reviewed-by: flokli <flokli@flokli.de>
This commit is contained in:
Florian Klink 2024-11-19 16:30:01 +02:00 • committed by flokli
parent 0715163779
commit 52a8e47ac1
8 changed files with 555 additions and 0 deletions
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62
users/flokli/nixos/nixos-tvix-cache/disko.nix Normal file
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# Disk /dev/nvme0n1: 1024 GB (=> 953 GiB)
# Disk /dev/nvme1n1: 1024 GB (=> 953 GiB)
# Disk /dev/sda: 22 TB (=> 20 TiB)
# Disk /dev/sdb: 22 TB (=> 20 TiB)
# Disk /dev/sdc: 22 TB (=> 20 TiB)
# Disk /dev/sdd: 22 TB (=> 20 TiB)
#
# # Installation
# 1. Comment out the fileSystems
# 2. Bootstrap the machine with `clan machines tvix-cache-install`
# 3. Do the btrfs partitioning by hand (because it's not supported by Disko)
# a. `mkfs.btrfs -m raid1 -d single /dev/sd{a,b,c,d} --label tank -f`
# b. `mkdir /tank && mount /dev/disk/by-label/tank /tank`
# 4. Uncomment the fileSystems section below
# 5. Re-deploy
#
# TODO: make use of /dev/nvme1n1
{
boot.loader.efi.canTouchEfiVariables = true;
boot.loader.systemd-boot.configurationLimit = 10;
boot.loader.systemd-boot.enable = true;
boot.loader.timeout = 3;
boot.supportedFilesystems = [ "btrfs" ];
# TODO: comment me during install
fileSystems."/tank" = {
fsType = "btrfs";
device = "/dev/disk/by-label/tank";
};
disko.devices = {
disk = {
main = {
type = "disk";
device = "/dev/nvme0n1";
content = {
type = "gpt";
partitions = {
ESP = {
size = "1G";
type = "EF00";
content = {
type = "filesystem";
format = "vfat";
mountpoint = "/boot";
mountOptions = [ "umask=0077" ];
};
};
root = {
size = "100%";
content = {
type = "filesystem";
format = "btrfs";
mountpoint = "/";
};
};
};
};
};
};
};
}