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✨ (cloud-init.sh): dynamically generate VMID and IP based on the last octet of the host machine's IP address

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🐛 (cloud-init.sh): fix IP address assignment to use CIDR notation
🐛 (cloud-init.sh): add validation for IP last octet to ensure it is between 1 and 254
This commit is contained in:
Eric X. Liu 2024-12-14 19:47:23 -08:00
parent 5db6405b19
commit 0520839925
1 changed files with 18 additions and 2 deletions
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20
cloud-init.sh
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@ -1,6 +1,21 @@
#!/usr/bin/env bash
set -x
# Get IP address of the local machine and extract the last octet
LOCAL_IP=$(ip -4 addr show vmbr0 | grep -oP '(?<=inet\s)\d+(\.\d+){3}' | head -1)
if [ -z "$LOCAL_IP" ]; then
echo "Error: Could not detect IP address on vmbr0 interface"
exit 1
fi
IP_LAST_OCTET=$(echo "$LOCAL_IP" | cut -d. -f4)
# Validate IP last octet
if ! [[ $IP_LAST_OCTET =~ ^[0-9]+$ ]] || [ $IP_LAST_OCTET -lt 1 ] || [ $IP_LAST_OCTET -gt 254 ]; then
echo "Error: Detected IP last octet ($IP_LAST_OCTET) is invalid. Must be between 1 and 254"
exit 1
fi
# Define the Debian version (e.g., 11, 12, 13)
DEBIAN_VERSION="12"
@ -65,8 +80,9 @@ SSH_KEY_PATH="id_rsa.pub"
virt-customize -v -x --install qemu-guest-agent -a $IMG_NAME --root-password password:coolpass --ssh-inject root:file:$SSH_KEY_PATH |& tee qemu.log
# Define VM parameters
IP_ADDRESS="10.10.0.${IP_LAST_OCTET}"
VMID="90${IP_LAST_OCTET}" # VMID will be 9050 for IP 10.10.0.50
TEMPL_NAME="debian-${DEBIAN_VERSION}-generic-$(date +%Y%m%d)"
VMID="9004"
MEM="2048"
DISK_SIZE="64G"
DISK_STOR="local-lvm"
@ -80,7 +96,7 @@ qm set $VMID --scsihw virtio-scsi-pci --scsi0 $DISK_STOR:vm-$VMID-disk-0
qm set $VMID --ide2 $DISK_STOR:cloudinit
qm set $VMID --boot c --bootdisk scsi0
qm set $VMID --serial0 socket --vga serial0
qm set $VMID --ipconfig0 ip=dhcp,gw=10.10.0.1
qm set $VMID --ipconfig0 ip=${IP_ADDRESS}/24,gw=10.10.0.1
qm resize $VMID scsi0 $DISK_SIZE
qm template $VMID