auto: bootstrapping bootstrap

This commit is contained in:
Sam 2024-05-23 12:42:57 +01:00
parent 3e5ebafed6
commit ccd2b52bd2
3 changed files with 23 additions and 61 deletions

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@ -27,11 +27,11 @@
] ]
}, },
"locked": { "locked": {
"lastModified": 1716448020, "lastModified": 1716457508,
"narHash": "sha256-u1ddoBOILtLVX4NYzqSZ9Qaqusql1M4reLd1fs554hY=", "narHash": "sha256-ZxzffLuWRyuMrkVVq7wastNUqeO0HJL9xqfY1QsYaqo=",
"owner": "nix-community", "owner": "nix-community",
"repo": "home-manager", "repo": "home-manager",
"rev": "25dedb0d52c20448f6a63cc346df1adbd6ef417e", "rev": "850cb322046ef1a268449cf1ceda5fd24d930b05",
"type": "github" "type": "github"
}, },
"original": { "original": {

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@ -12,24 +12,10 @@ for the root user.
read -p "Confirm host had been setup using the above steps...(yes|no): " confirm read -p "Confirm host had been setup using the above steps...(yes|no): " confirm
[ "$confirm" != "yes" ] && echo "Exiting" && exit 0 [ "$confirm" != "yes" ] && echo "Exiting" && exit 0
# Target host details
#cd ~
#read -p "Enter hostname: " hostname
#read -p "Enter username: " username
#read -p "Enter ip address: " ip
#read -p "Enter nixosSystem to build, e.g. 'bootstrap': " config
hostname="bootstrap" hostname="bootstrap"
ip="192.168.122.192" ip="192.168.122.192"
config="bootstrap" config="bootstrap"
# Generate key name and dir
HOST_KEY_DIR="$HOME/keys/hosts/$hostname"
mkdir -p "$HOST_KEY_DIR"
# Create ssh keys if not exists
echo "Creating '$hostname' ssh keys"
bash "/$HOME/nixos/scripts/generate_ssh_keys.sh" --type "host" --username "root" --hostname "$hostname"
# Delete key in known hosts if exists # Delete key in known hosts if exists
sed -i "/$ip/d" ~/.ssh/known_hosts sed -i "/$ip/d" ~/.ssh/known_hosts
@ -37,13 +23,6 @@ sed -i "/$ip/d" ~/.ssh/known_hosts
echo "Copying pubkey to target host" echo "Copying pubkey to target host"
ssh-copy-id -i "$(readlink -f "$HOME/.ssh/id_ed25519.pub")" "root@$ip" ssh-copy-id -i "$(readlink -f "$HOME/.ssh/id_ed25519.pub")" "root@$ip"
# Generate age key from target host and user public ssh key
echo "Generating age key from target host and user ssh key"
nix-shell -p ssh-to-age --run "cat $HOST_KEY_DIR/ssh_host_ed25519_key.pub | ssh-to-age > $HOST_KEY_DIR/age_host_key"
HOST_AGE_KEY=$(cat "$HOST_KEY_DIR/age_host_key")
echo -e "Host age key:\n$HOST_AGE_KEY\n"
echo "These keys needs to be inserted into .sops.yaml file. This will be prompted again later."
# Create temp directory for ssh keys to be copied to host: # Create temp directory for ssh keys to be copied to host:
temp=$(mktemp -d) temp=$(mktemp -d)
@ -56,12 +35,30 @@ trap cleanup EXIT
# Create the directory where sshd expects to find the host keys # Create the directory where sshd expects to find the host keys
install -d -m755 "$temp/persist/etc/ssh" install -d -m755 "$temp/persist/etc/ssh"
cat "$HOST_KEY_DIR/ssh_host_ed25519_key" > "$temp/persist/etc/ssh/ssh_host_ed25519_key" # Create ssh keys if not exists
cat "$HOST_KEY_DIR/ssh_host_ed25519_key.pub" > "$temp/persist/etc/ssh/ssh_host_ed25519_key.pub" echo "Creating '$hostname' ssh keys"
ssh-keygen -t ed25519 -f "$temp/persist/etc/ssh/ssh_host_ed25519_key" -C root@"$hostname" -N ""
chmod 600 "$temp/persist/etc/ssh/ssh_host_ed25519_key" chmod 600 "$temp/persist/etc/ssh/ssh_host_ed25519_key"
chmod 644 "$temp/persist/etc/ssh/ssh_host_ed25519_key.pub" chmod 644 "$temp/persist/etc/ssh/ssh_host_ed25519_key.pub"
# Generate age key from target host and user public ssh key
echo "Generating age key from target host and user ssh key"
HOST_AGE_KEY=$(nix-shell -p ssh-to-age --run "cat $temp/persist/etc/ssh/ssh_host_ed25519_key.pub | ssh-to-age")
echo -e "Host age key:\n$HOST_AGE_KEY\n"
# Update .sops.yaml with new age key:
SOPS_FILE="../nix-secrets/sops.yaml"
sed -i "{
# Remove any * and & entries for this host
/[*&]$hostname/ d;
# Inject a new age: entry
# n matches the first line following age: and p prints it, then we transform it while reusing the spacing
/age:/{n; p; s/\(.*- \*\).*/\1$hostname/};
# Inject a new hosts: entry
/&hosts:/{n; p; s/\(.*- &\).*/\1$hostname $HOST_AGE_KEY/}
}" $SOPS_FILE
# Install Nixos to target # Install Nixos to target
cd "$HOME/nixos" cd "$HOME/nixos"
git add . && git commit -m "auto: bootstrapping $hostname" && git push git add . && git commit -m "auto: bootstrapping $hostname" && git push

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@ -1,35 +0,0 @@
#!/usr/bin/env bash
echo "Generating an age key based on the new ssh_host_ed25519_key."
target_key=$(ssh-keyscan -p $ssh_port -t ssh-ed25519 "$target_destination" 2>&1 | grep ssh-ed25519 | cut -f2- -d" ")
age_key=$(nix shell nixpkgs#ssh-to-age.out -c sh -c "echo $target_key | ssh-to-age")
if grep -qv '^age1' <<<"$age_key"; then
echo "The result from generated age key does not match the expected format."
echo "Result: $age_key"
echo "Expected format: age10000000000000000000000000000000000000000000000000000000000"
exit 1
else
echo "$age_key"
fi
echo "Updating nix-secrets/.sops.yaml"
cd ../nix-secrets
SOPS_FILE=".sops.yaml"
sed -i "{
# Remove any * and & entries for this host
/[*&]$target_hostname/ d;
# Inject a new age: entry
# n matches the first line following age: and p prints it, then we transform it while reusing the spacing
/age:/{n; p; s/\(.*- \*\).*/\1$target_hostname/};
# Inject a new hosts: entry
/&hosts:/{n; p; s/\(.*- &\).*/\1$target_hostname $age_key/}
}" $SOPS_FILE
echo "Updating nix-secrets/.sops.yaml"
cd -
just rekey
echo "Updating flake lock on source machine with new .sops.yaml info"
nix flake lock --update-input nix-secrets