2023-01-02 15:37:28 +10:00
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## Hosts
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### `build01`
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This machine is perfect for running heavy builds.
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* Provider: Hetzner
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* CPU: AMD Ryzen 7 1700X Eight-Core Processor
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* RAM: 64GB
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* Drives: 2 x 512 GB SATA SSD
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### `build02`
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This machine currently just runs r-ryantm/nixpkgs-update.
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* Provider: Hetzner
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* CPU: AMD Ryzen 7 3700X Eight-Core Processor
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* RAM: 64GB DDR4 ECC
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* Drives: 2 x 1 TB NVME in RAID 1
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### `build03`
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This machine is a replacement for build01.
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* Provider: Hetzner
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* CPU: AMD Ryzen 5 3600 6-Core Processor
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* RAM: 64GB DDR4 ECC
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* Drives: 2 x 512 GB NVME in RAID 1
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### `build04`
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This machine is meant as an aarch64 builder for our hydra instance running on build03.
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* Provider: Oracle cloud
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* Instance type: [Ampere A1 Compute](https://www.oracle.com/cloud/compute/arm/)
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* CPU: 4 VCPUs on an Ampere Altra (arm64)
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* RAM: 24GB
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* Drives: 200 GB Block
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## Deployment commands:
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```console
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2023-01-07 11:10:13 +10:00
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$ ./inv deploy
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2023-01-02 15:37:28 +10:00
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```
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If you want to reboot a machine, use the following command to also deploy secrets afterwards:
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```console
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$ inv deploy --hosts build02 reboot --hosts build02
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```
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## Install/Fix system from Hetzner recovery mode
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1. Copy your ssh key to the recovery system so that the kexec image can re-use it.
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``` console
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yourmachine> ssh-copy-id root@build0X.nix-community.org
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```
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2. Download and boot into kexec-image:
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``` console
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$ curl -L https://github.com/nix-community/nixos-images/releases/download/nixos-unstable/nixos-kexec-installer-x86_64-linux.tar.gz | tar -xzf- -C /root
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$ /root/kexec/run
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```
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3. Format and/or mount all filesystems to /mnt:
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```console
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$ inv format-disks --hosts buildXX --disks /dev/nvme0n1,/dev/nvme1n1
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```
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4. Setup secrets
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```console
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$ inv setup-secret --hosts buildXX
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```
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5. Generate configuration and download to the repo
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```console
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$ nixos-generate-config --root /tmp
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# optional, in most cases one can import roles/hetzner/amd.nix
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$ scp buildXX.nix-community.org:/tmp/etc/nixos/hardware-configuration.nix buildXX/hardware-configuration.nix
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```
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6. Build and install
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```console
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$ inv install-nixos --hosts buildXX
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```
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### Debug VM
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You can start a vm from the rescue system in order to debug the boot:
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```console
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$ nix-shell -p qemu_kvm --run 'qemu-kvm -m 10G -hda /dev/sda -hdb /dev/sdb -curses -cpu host -enable-kvm'
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```
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