Impermanence: Difference between revisions
imported>KREYREN Add warning about being able to log in |
Warn about impermanence overriding config.users ownership and permissions |
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{{warning|When setting up impermanence, make sure that you have declared password for your user to be able to log-in after the deployment as for example the nixos installer declares passwords imperatively.}} | {{warning|When setting up impermanence, make sure that you have declared password for your user to be able to log-in after the deployment as for example the nixos installer declares passwords imperatively.}} | ||
{{warning|The permissions and user/group ownership of your persisted directories overrides values configured in <code>config.users.*</code>, potentially including your home directories.}} | |||
Impermanence in NixOS is where your root directory gets wiped every reboot (such as by mounting a tmpfs to /). Such a setup is possible because NixOS only needs <code>/boot</code> and <code>/nix</code> in order to boot, all other system files are simply links to files in <code>/nix</code>. <code>/boot</code> and <code>/nix</code> still need to be stored on a hard drive or SSD. | Impermanence in NixOS is where your root directory gets wiped every reboot (such as by mounting a tmpfs to /). Such a setup is possible because NixOS only needs <code>/boot</code> and <code>/nix</code> in order to boot, all other system files are simply links to files in <code>/nix</code>. <code>/boot</code> and <code>/nix</code> still need to be stored on a hard drive or SSD. | ||
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"/var/lib/nixos" | "/var/lib/nixos" | ||
"/var/lib/systemd/coredump" | "/var/lib/systemd/coredump" | ||
"/var/lib/systemd/timers" | |||
"/etc/NetworkManager/system-connections" | "/etc/NetworkManager/system-connections" | ||
{ directory = "/var/lib/colord"; user = "colord"; group = "colord"; mode = "u=rwx,g=rx,o="; } | { directory = "/var/lib/colord"; user = "colord"; group = "colord"; mode = "u=rwx,g=rx,o="; } | ||
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[https://grahamc.com/blog/erase-your-darlings https://grahamc.com/blog/erase-your-darlings] - Explaining why you might want to do this. Uses ZFS snapshots instead of tmpfs. | [https://grahamc.com/blog/erase-your-darlings https://grahamc.com/blog/erase-your-darlings] - Explaining why you might want to do this. Uses ZFS snapshots instead of tmpfs. | ||
https://web.archive.org/web/20241007130142/https://mt-caret.github.io/blog/posts/2020-06-29-optin-state.html - Encypted Btrfs Root with Opt-in State on NixOS. Uses Btrfs instead of tmpfs or ZFS. | |||
[[Category:Configuration]] | |||
[[Category:NixOS]] | |||