Creating VM initialization scripts

This commit is contained in:
vandomej 2025-09-29 21:51:02 -07:00
parent 9cdbfa988f
commit 2547c73dc2
18 changed files with 404 additions and 31 deletions

View file

@ -94,7 +94,7 @@ resource "null_resource" "talos_cluster_patches" {
command = <<EOT
# Apply ONLY your custom patches (not the full config)
talosctl patch machineconfig \
--patch-file patches/controlplane-patch.yaml \
--patch-file patches/controlplane-patch-1.yaml \
--nodes 10.5.0.2
EOT
}

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@ -0,0 +1,9 @@
# patches/controlplane-patch-1.yaml
- op: replace
path: /machine/network/interfaces
value:
- interface: <control-plane-network-interface>
dhcp: true
- op: replace
path: /machine/install/disk
value: /dev/<control-plane-disk-name>

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@ -0,0 +1,192 @@
#!/bin/bash
set -e
# Configuration
VM_DIR="${VM_DIR:-$(pwd)/control-plane-vm}"
CONTROLPLANE_NAME="talos-controlplane"
MEMORY="2048" # 2GB per VM
CPUS="2"
DISK_SIZE="10G" # 10GB disk
TALOS_ISO_URL="https://github.com/siderolabs/talos/releases/download/v1.11.0/metal-arm64.iso"
# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m'
log_info() {
echo -e "${GREEN}[INFO]${NC} $1"
}
log_warn() {
echo -e "${YELLOW}[WARN]${NC} $1"
}
log_error() {
echo -e "${RED}[ERROR]${NC} $1"
}
# Create VM directory
create_vm_dir() {
local vm_name=$1
local vm_path="$VM_DIR/$vm_name"
mkdir -p "$vm_path"
echo "$vm_path"
}
# Download Talos ISO if not exists
download_talos_iso() {
local iso_path="$VM_DIR/talos.iso"
if [[ ! -f "$iso_path" ]]; then
log_info "Downloading Talos ISO..."
curl -L -o "$iso_path" "$TALOS_ISO_URL"
else
log_info "Talos ISO already exists"
fi
echo "$iso_path"
}
# Create disk image
create_disk_image() {
local vm_path=$1
local vm_name=$2
local disk_path="$vm_path/disk.qcow2"
if [[ ! -f "$disk_path" ]]; then
log_info "Creating disk image for $vm_name..."
qemu-img create -f qcow2 "$disk_path" "$DISK_SIZE"
else
log_warn "Disk image already exists for $vm_name"
fi
echo "$disk_path"
}
# Generate unique MAC address
generate_mac() {
local vm_name=$1
local hash=$(echo "$vm_name" | md5sum | cut -c1-6)
printf "52:54:00:%s:%s:%s" "${hash:0:2}" "${hash:2:2}" "${hash:4:2}"
}
# Create VM startup script
create_vm_script() {
local vm_path=$1
local vm_name=$2
local mac_address=$3
local iso_path=$4
local disk_path=$5
local script_path="$vm_path/start.sh"
cat > "$script_path" << EOF
#!/bin/bash
qemu-system-aarch64 \\
-name "$vm_name" \\
-machine virt,highmem=off \\
-accel hvf \\
-cpu host \\
-smp "$CPUS" \\
-m "${MEMORY}M" \\
-drive file="$disk_path",if=virtio,format=qcow2 \\
-cdrom "$iso_path" \\
-netdev user,id=net0 \\
-device virtio-net-pci,netdev=net0,mac=$mac_address \\
-nographic \\
-serial mon:stdio
EOF
chmod +x "$script_path"
echo "$script_path"
}
# Create systemd service file (optional)
create_service_file() {
local vm_path=$1
local vm_name=$2
local script_path=$3
local service_path="$vm_path/$vm_name.service"
cat > "$service_path" << EOF
[Unit]
Description=Talos VM - $vm_name
After=network.target
[Service]
Type=simple
ExecStart=$script_path
WorkingDirectory=$vm_path
Restart=always
User=$USER
[Install]
WantedBy=multi-user.target
EOF
echo "$service_path"
}
# Main execution
main() {
log_info "Creating Talos VMs with QEMU..."
if ! command -v qemu-system-aarch64 &> /dev/null; then
log_error "QEMU is not installed. Install with: brew install qemu"
exit 1
fi
local iso_path=$(download_talos_iso)
log_info "Creating controlplane VM..."
local controlplane_path=$(create_vm_dir "$CONTROLPLANE_NAME")
local controlplane_disk=$(create_disk_image "$controlplane_path" "$CONTROLPLANE_NAME")
local controlplane_mac=$(generate_mac "$CONTROLPLANE_NAME")
local controlplane_script=$(create_vm_script "$controlplane_path" "$CONTROLPLANE_NAME" "$controlplane_mac" "$iso_path" "$controlplane_disk")
create_service_file "$controlplane_path" "$CONTROLPLANE_NAME" "$controlplane_script"
local manage_script="$VM_DIR/manage-vm.sh"
cat > "$manage_script" << 'EOF'
#!/bin/bash
VM_DIR="$(cd "$(dirname "$0")" && pwd)"
start_vm() {
echo "Starting Talos VM..."
"$VM_DIR/talos-controlplane/start.sh" &
}
stop_vm() {
echo "Stopping Talos VM..."
pkill -f "qemu-system-aarch64.*talos-controlplane"
}
case "$1" in
start)
start_vm
;;
stop)
stop_vm
;;
status)
pgrep -f "qemu-system-aarch64.*talos-controlplane" > /dev/null && echo "VM is running" || echo "VM is stopped"
;;
*)
echo "Usage: $0 {start|stop|status}"
exit 1
;;
esac
EOF
chmod +x "$manage_script"
log_info "VM creation complete!"
log_info "VM files located at: $VM_DIR"
log_info ""
log_info "To start VM: $manage_script start"
log_info "To stop VM: $manage_script stop"
log_info ""
log_info "Controlplane MAC: $controlplane_mac"
}
main "$@"

View file

@ -1,24 +0,0 @@
#!/bin/bash
cluster_name="$1"
echo "Starting cleanup for cluster: $cluster_name"
sudo chown -R $(id -u):$(id -g) $HOME/.talos
sudo chown -R $(id -u):$(id -g) $HOME/.kube
sudo --preserve-env=HOME talosctl cluster destroy \
--provisioner=qemu \
--name $cluster_name || true
sudo pkill -9 -f qemu-system
# Remove kubeconfig entries
kubectl config delete-context "$cluster_name" || true
kubectl config delete-cluster "admin@$cluster_name" || true
kubectl config delete-user "admin@$cluster_name" || true
talosctl config remove "$cluster_name" || true
# Remove files
sudo rm -rf "${HOME}/.talos/clusters/${cluster_name}" || truec
echo "Cleanup completed for cluster: $cluster_name"

View file

@ -1,6 +0,0 @@
# patches/controlplane-patch.yaml
- op: replace
path: /machine/network/nameservers
value:
- "1.1.1.1"
- "8.8.8.8"

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@ -0,0 +1,9 @@
# patches/worker-patch-1.yaml
- op: replace
path: /machine/network/interfaces
value:
- interface: <worker-network-interface>
dhcp: true
- op: replace
path: /machine/install/disk
value: /dev/<worker-disk-name>

View file

@ -0,0 +1,193 @@
#!/bin/bash
set -e
# Configuration
VM_DIR="${VM_DIR:-$(pwd)/worker-vms}"
WORKER_NAME="talos-worker"
MEMORY="2048" # 2GB per VM
CPUS="2"
DISK_SIZE="10G" # 10GB disk
TALOS_ISO_URL="https://github.com/siderolabs/talos/releases/download/v1.11.0/metal-arm64.iso"
# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m'
log_info() {
echo -e "${GREEN}[INFO]${NC} $1"
}
log_warn() {
echo -e "${YELLOW}[WARN]${NC} $1"
}
log_error() {
echo -e "${RED}[ERROR]${NC} $1"
}
# Create VM directory
create_vm_dir() {
local vm_name=$1
local vm_path="$VM_DIR/$vm_name"
mkdir -p "$vm_path"
echo "$vm_path"
}
# Download Talos ISO if not exists
download_talos_iso() {
local iso_path="$VM_DIR/talos.iso"
if [[ ! -f "$iso_path" ]]; then
log_info "Downloading Talos ISO..."
curl -L -o "$iso_path" "$TALOS_ISO_URL"
else
log_info "Talos ISO already exists"
fi
echo "$iso_path"
}
# Create disk image
create_disk_image() {
local vm_path=$1
local vm_name=$2
local disk_path="$vm_path/disk.qcow2"
if [[ ! -f "$disk_path" ]]; then
log_info "Creating disk image for $vm_name..."
qemu-img create -f qcow2 "$disk_path" "$DISK_SIZE"
else
log_warn "Disk image already exists for $vm_name"
fi
echo "$disk_path"
}
# Generate unique MAC address
generate_mac() {
local vm_name=$1
local hash=$(echo "$vm_name" | md5sum | cut -c1-6)
printf "52:54:00:%s:%s:%s" "${hash:0:2}" "${hash:2:2}" "${hash:4:2}"
}
# Create VM startup script
create_vm_script() {
local vm_path=$1
local vm_name=$2
local mac_address=$3
local iso_path=$4
local disk_path=$5
local script_path="$vm_path/start.sh"
cat > "$script_path" << EOF
#!/bin/bash
qemu-system-aarch64 \\
-name "$vm_name" \\
-machine virt,highmem=off \\
-accel hvf \\
-cpu host \\
-smp "$CPUS" \\
-m "${MEMORY}M" \\
-drive file="$disk_path",if=virtio,format=qcow2 \\
-cdrom "$iso_path" \\
-netdev user,id=net0 \\
-device virtio-net-pci,netdev=net0,mac=$mac_address \\
-nographic \\
-serial mon:stdio
EOF
chmod +x "$script_path"
echo "$script_path"
}
# Create systemd service file (optional)
create_service_file() {
local vm_path=$1
local vm_name=$2
local script_path=$3
local service_path="$vm_path/$vm_name.service"
cat > "$service_path" << EOF
[Unit]
Description=Talos VM - $vm_name
After=network.target
[Service]
Type=simple
ExecStart=$script_path
WorkingDirectory=$vm_path
Restart=always
User=$USER
[Install]
WantedBy=multi-user.target
EOF
echo "$service_path"
}
# Main execution
main() {
log_info "Creating Talos VMs with QEMU..."
if ! command -v qemu-system-aarch64 &> /dev/null; then
log_error "QEMU is not installed. Install with: brew install qemu"
exit 1
fi
local iso_path=$(download_talos_iso)
# Create worker VM
log_info "Creating worker VM..."
local worker_path=$(create_vm_dir "$WORKER_NAME")
local worker_disk=$(create_disk_image "$worker_path" "$WORKER_NAME")
local worker_mac=$(generate_mac "$WORKER_NAME")
local worker_script=$(create_vm_script "$worker_path" "$WORKER_NAME" "$worker_mac" "$iso_path" "$worker_disk")
create_service_file "$worker_path" "$WORKER_NAME" "$worker_script"
local manage_script="$VM_DIR/manage-vms.sh"
cat > "$manage_script" << 'EOF'
#!/bin/bash
VM_DIR="$(cd "$(dirname "$0")" && pwd)"
start_vms() {
echo "Starting Talos VMs..."
"$VM_DIR/talos-worker/start.sh" &
}
stop_vms() {
echo "Stopping Talos VMs..."
pkill -f "qemu-system-aarch64.*talos-worker"
}
case "$1" in
start)
start_vms
;;
stop)
stop_vms
;;
status)
pgrep -f "qemu-system-aarch64.*talos-worker" > /dev/null && echo "VMs are running" || echo "VMs are stopped"
;;
*)
echo "Usage: $0 {start|stop|status}"
exit 1
;;
esac
EOF
chmod +x "$manage_script"
log_info "VM creation complete!"
log_info "VM files located at: $VM_DIR"
log_info ""
log_info "To start VMs: $manage_script start"
log_info "To stop VMs: $manage_script stop"
log_info ""
log_info "Worker MAC: $worker_mac"
}
main "$@"