pointfichiers/docs/gasdev.md

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# Gasdev infrastructure
## Initial installation
Cloud providers not always provide a NixOS install option, so I use [nixos-anywhere](https://github.com/nix-community/nixos-anywhere) for remote NixOS installation using SSH
### Kexec installation
As specified in [nixos-images](https://github.com/nix-community/nixos-images#kexec-tarballs):
```sh
# Run as root
curl -L https://github.com/nix-community/nixos-images/releases/download/nixos-unstable/nixos-kexec-installer-noninteractive-x86_64-linux.tar.gz | tar -xzf- -C /root
/root/kexec/run
```
The machine will restart in a new NixOS installation. The existing SSH keys are copied to the new installation's _root_ user.
### NixOS-everywhere
```sh
nix run github:nix-community/nixos-anywhere -- --flake .#<configuration name> root@<ip address>
```
## Deploy configuration
2024-09-24 10:20:26 +02:00
In order to deploy new configuration changes after the initial NixOS installation, I use [deploy-rs](https://github.com/serokell/deploy-rs). It requires a properly set-up **ssh-agent** and SSH keys being installed on the **root** user.
Then you can deploy the new configuration:
```sh
nix run github:serokell/deploy-rs .#<configuration name>
```