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kexec: update documentation

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Jörg Thalheim 2022-11-27 20:11:19 +01:00
parent eb802f5652
commit 0092c8af6c
1 changed files with 10 additions and 4 deletions
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14
README.md
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@ -31,9 +31,14 @@ curl -L https://github.com/nix-community/nixos-images/releases/download/nixos-un
/root/kexec/run
```
The script copies existing sshd host keys and ssh keys from
`/root/.ssh/authorized_keys`, `/root/.ssh/authorized_keys2` and
`/etc/ssh/authorized_keys.d/root` to the booted nixos machine.
The kexec installer comes with the following features:
- Re-uses ssh host keys from the sshd to not break `.ssh/known_hosts`
- Authorized ssh keys are read from `/root/.ssh/authorized_keys`, `/root/.ssh/authorized_keys2` and `/etc/ssh/authorized_keys.d/root`
- Static ip addresses and routes are restored after reboot. Interface that had
dynamic addresses before are configured with DHCP and to accept prefixes from
ipv6 router advertisment.
The actual kexec happens with a slight delay (6s). This allows for easier
integration into automated nixos installation scripts, since you can cleanly
@ -41,4 +46,5 @@ disconnect from the running machine before the kexec takes place. The tarball
is also designed to be run from NixOS, which can be useful for new installations
We also have [kexec-bundle](https://github.com/nix-community/nixos-images/releases/download/nixos-unstable/kexec-bundle-x86_64-linux),
which is a self-extracting archive from [nixos-generators](https://github.com/nix-community/nixos-generators). This version unpacks itself to `/` and possibly overlays the existing `/nix/store` with its own files.
which is a self-extracting archive from [nixos-generators](https://github.com/nix-community/nixos-generators).
This version unpacks itself to `/` and possibly overlays the existing `/nix/store` with its own files.