NixOS-PVE-Deployment-Util/config-lxc.sh

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#!/bin/bash
# Function to validate IP address format
validate_ip() {
if [[ $1 =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
return 0
fi
return 1
}
# Function to generate NixOS configuration
generate_nixos_config() {
local ssh_key="$1"
local ip_addr="$2"
local gateway="$3"
cat << 'EOF'
{ modulesPath, config, pkgs, ... }:
{
imports =
[
"${modulesPath}/virtualisation/lxc-container.nix"
];
boot.isContainer = true;
systemd.suppressedSystemUnits = [
"dev-mqueue.mount"
"sys-kernel-debug.mount"
"sys-fs-fuse-connections.mount"
];
environment.systemPackages = with pkgs; [
openssh
binutils
man
git
];
users.users.admin = {
isNormalUser = true;
extraGroups = [ "wheel" ];
openssh.authorizedKeys.keys = [
EOF
echo " \"$ssh_key\""
cat << 'EOF'
];
};
security.sudo.wheelNeedsPassword = true;
programs.nix-ld.enable = true;
services.openssh = {
enable = true;
settings = {
AllowUsers = ["admin"];
PasswordAuthentication = false;
PermitRootLogin = "no";
};
};
networking = {
dhcpcd.enable = false;
useDHCP = false;
useHostResolvConf = false;
EOF
echo " defaultGateway = \"$gateway\";"
echo " interfaces.eth0.ipv4.addresses = [{"
echo " address = \"$ip_addr\";"
cat << 'EOF'
prefixLength = 24;
}];
};
system.stateVersion = "24.05";
}
EOF
}
# Get Container ID
echo "Enter Container ID (100-999):"
read CTID
while ! [[ "$CTID" =~ ^[1-9][0-9]{2}$ ]]; do
echo "Invalid Container ID. Please enter a number between 100-999:"
read CTID
done
# Get SSH Key
echo "Enter SSH public key:"
read SSH_KEY
while [ -z "$SSH_KEY" ]; do
echo "SSH key cannot be empty. Please enter your SSH public key:"
read SSH_KEY
done
# Get IP Address
echo "Enter IP Address:"
read IP_ADDRESS
while ! validate_ip "$IP_ADDRESS"; do
echo "Invalid IP Address. Please enter a valid IP (e.g., 192.168.1.100):"
read IP_ADDRESS
done
# Get Gateway
echo "Enter Gateway IP:"
read GATEWAY
while ! validate_ip "$GATEWAY"; do
echo "Invalid Gateway IP. Please enter a valid IP (e.g., 192.168.1.1):"
read GATEWAY
done
# Confirm settings
echo -e "\nPlease confirm these settings:"
echo "Container ID: $CTID"
echo "IP Address: $IP_ADDRESS"
echo "Gateway: $GATEWAY"
echo "SSH Key: $SSH_KEY"
echo -e "\nProceed with these settings? (y/n)"
read CONFIRM
if [ "$CONFIRM" != "y" ]; then
echo "Configuration cancelled"
exit 1
fi
# Generate configuration
CONFIG_CONTENT=$(generate_nixos_config "$SSH_KEY" "$IP_ADDRESS" "$GATEWAY")
# Wait for container to be ready
pct start ${CTID}
sleep 10
# Execute all commands in a single session
pct enter ${CTID} << EOF
/run/current-system/sw/bin/bash << 'INNEREOF'
mkdir -p /etc/nixos
cat > /etc/nixos/configuration.nix << 'CONFIGEOF'
${CONFIG_CONTENT}
CONFIGEOF
nixos-rebuild switch
INNEREOF
EOF
echo "Configuration applied successfully!"