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auto: bootstrapping sparky

This commit is contained in:
Sam 2024-05-26 14:18:14 +01:00
parent 95a5f258f9
commit b7e0b6bc84
2 changed files with 16 additions and 18 deletions
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8
flake.lock
View File

@ -228,11 +228,11 @@
"nix-secrets": {
"flake": false,
"locked": {
"lastModified": 1716728838,
"narHash": "sha256-Gmsb1Bovwg+6XTwuyohpv1Ez8em0phLDEPWyh1Z4vS4=",
"lastModified": 1716729487,
"narHash": "sha256-mf+lK/G5cuJjXlsBTlLpOqBw7Qx+H1ZQ8x4MohX6OO8=",
"ref": "refs/heads/master",
"rev": "46bedb594c7f12f800a3d224e549dede64da968b",
"revCount": 44,
"rev": "36900f87c79f7b63a39b7c134963c5c17063a616",
"revCount": 45,
"type": "git",
"url": "ssh://git@git.bitlab21.com/sam/nix-secrets.git"
},

26
scripts/bootstrap.sh
View File

@ -23,28 +23,29 @@ sed -i "/$ip/d" ~/.ssh/known_hosts
echo "Copying pubkey to target host"
ssh-copy-id -i "$(readlink -f "$HOME/.ssh/id_ed25519.pub")" "root@$ip"
# Create temp directory for ssh keys to be copied to host:
temp=$(mktemp -d)
# Create temp directory for ssh and luks keys to be copied to host:
temp_ssh=$(mktemp -d)
touch /tmp/luks_secret.key
# Function to cleanup temporary directory on exit
cleanup() {
rm -rf "$temp"
rm -rf "$temp_ssh" /tmp/luks_secret.key
}
trap cleanup EXIT
# Create the directory where sshd expects to find the host keys
install -d -m755 "$temp/persist/etc/ssh"
install -d -m755 "$temp_ssh/persist/etc/ssh"
# Create ssh keys if not exists
echo "Creating '$hostname' ssh keys"
ssh-keygen -t ed25519 -f "$temp/persist/etc/ssh/ssh_host_ed25519_key" -C root@"$hostname" -N ""
ssh-keygen -t ed25519 -f "$temp_ssh/persist/etc/ssh/ssh_host_ed25519_key" -C root@"$hostname" -N ""
chmod 600 "$temp/persist/etc/ssh/ssh_host_ed25519_key"
chmod 644 "$temp/persist/etc/ssh/ssh_host_ed25519_key.pub"
chmod 600 "$temp_ssh/persist/etc/ssh/ssh_host_ed25519_key"
chmod 644 "$temp_ssh/persist/etc/ssh/ssh_host_ed25519_key.pub"
# Generate age key from target host and user public ssh key
echo "Generating age key from target host and user ssh key"
HOST_AGE_KEY=$(nix-shell -p ssh-to-age --run "cat $temp/persist/etc/ssh/ssh_host_ed25519_key.pub | ssh-to-age")
HOST_AGE_KEY=$(nix-shell -p ssh-to-age --run "cat $temp_ssh/persist/etc/ssh/ssh_host_ed25519_key.pub | ssh-to-age")
echo -e "Host age key:\n$HOST_AGE_KEY\n"
# Update .sops.yaml with new age key:
@ -62,19 +63,16 @@ sed -i "{
just update-sops-secrets && just update-flake-secrets && just update-flake
# Extract luks key from secrets
luks_key=$(nix-shell -p sops --run "SOPS_AGE_KEY_FILE=~/.config/sops/age/keys.txt sops -d --extract '[""\"passwords""\"][""\"root""\"]' ../nix-secrets/secrets.yaml")
echo "$luks_key" > /tmp/luks_secret.key
luks_secret=$(nix-shell -p sops --run "SOPS_AGE_KEY_FILE=~/.config/sops/age/keys.txt sops -d --extract '[""\"passwords""\"][""\"root""\"]' ../nix-secrets/secrets.yaml")
echo "$luks_secret" > /tmp/luks_secret.key
# Install Nixos to target
cd "$HOME/nixos"
git add . && git commit -m "auto: bootstrapping $hostname" && git push
SHELL=/bin/sh nix run github:nix-community/nixos-anywhere -- --extra-files "$temp" --flake .#"$config" root@"$ip" -i "$HOME/.ssh/id_ed25519"
SHELL=/bin/sh nix run github:nix-community/nixos-anywhere -- --extra-files "$temp_ssh" --disk-encryption-keys /tmp/luks_secret.key --flake .#"$config" root@"$ip" -i "$HOME/.ssh/id_ed25519"
[ $? != 0 ] && echo "Error installing Nixos" && exit 1
# Delete luks key
rm /tmp/luks_secret.key
## Delete keys from local known_hosts
echo "Deleting host from known_hosts"
sed -i "/$ip/d" ~/.ssh/known_hosts