mirror of
https://github.com/Security-Onion-Solutions/securityonion.git
synced 2025-12-06 17:22:49 +01:00
154 lines
4.0 KiB
Bash
154 lines
4.0 KiB
Bash
#!/bin/bash
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# Exit on any error
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set -e
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# Set variables and defaults
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VM=${1:-"small-vm"} # VM name
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IP=${2:-"192.168.1.10"} # IP address
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GATEWAY=${3:-"192.168.1.1"} # Gateway
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DNS=${4:-"192.168.1.1"} # Comma-separated list of DNS servers
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MAC_ADDRESS="52:54:00:f2:c3:df" # Default MAC - will be overridden if found
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# Show usage if help is requested
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if [[ "$1" == "-h" || "$1" == "--help" ]]; then
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echo "Usage: $0 <vm_name> <ip> <gateway> <dns_servers>"
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echo "Example: $0 myvm 192.168.1.50 192.168.1.1 8.8.8.8,8.8.4.4"
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echo "All parameters are optional and will use defaults if not specified"
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exit 0
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fi
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# Convert comma-separated DNS servers to yaml format
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format_dns() {
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local IFS=','
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local dns_list=($1)
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local yaml=""
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for dns in "${dns_list[@]}"; do
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yaml="$yaml - $dns"$'\n'
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done
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echo "$yaml"
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}
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DNS_YAML=$(format_dns "$DNS")
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# Set up directory structure
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D=/root/create_vm/var/lib/libvirt/images
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mkdir -vp $D/$VM
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cd $D/$VM
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# Create cloud-init metadata
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cat > meta-data << EOF
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instance-id: ${VM}
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local-hostname: ${VM}
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EOF
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# Create network configuration
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cat > network-config << EOF
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version: 2
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ethernets:
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eth0:
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match:
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macaddress: ${MAC_ADDRESS}
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dhcp4: false
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dhcp6: false
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addresses:
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- ${IP}/24
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routes:
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- to: 0.0.0.0/0
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via: ${GATEWAY}
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nameservers:
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addresses:
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$(format_dns "$DNS")
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EOF
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# Generate password hash using:
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# Create passwd hash
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### python3 -c 'import crypt; print(crypt.crypt("YOUR_PASSWD_HERE", crypt.mksalt(crypt.METHOD_SHA512)))'
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# Create ssh keypair
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### ssh-keygen -t ed25519 -C "soqemussh" -f ~/.ssh/soqemussh
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# Create user-data with network configuration
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cat > user-data << EOF
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#cloud-config
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preserve_hostname: False
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hostname: ${VM}
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fqdn: ${VM}.local
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users:
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- default
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- name: soqemussh
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groups: ['wheel']
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shell: /bin/bash
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sudo: ALL=(ALL) NOPASSWD:ALL
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lock_passwd: false
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passwd: $(echo '___YOUR_HASH_HERE___')
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ssh-authorized-keys:
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- ssh-ed25519 ___YOUR_PUB_KEY_HERE___
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# Configure where output will go
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output:
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all: ">> /var/log/cloud-init.log"
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# configure interaction with ssh server
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ssh_genkeytypes: ['ed25519', 'rsa']
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# set timezone for VM
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timezone: UTC
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# Don't preallocate the entire disk space
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#resize_rootfs: true
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#growpart:
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# mode: auto
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# devices: ['/']
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# Install QEMU guest agent. Enable and start the service
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packages:
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- qemu-guest-agent
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runcmd:
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- systemctl enable --now qemu-guest-agent
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- systemctl enable --now serial-getty@ttyS0.service
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- systemctl enable --now NetworkManager
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- growpart /dev/vda 2
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- pvresize /dev/vda2
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- lvextend -l +100%FREE /dev/vg_main/lv_root
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- xfs_growfs /dev/vg_main/lv_root
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EOF
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# First, copy the base image
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echo "Creating base VM image..."
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cp -v /root/create_vm/OL9U5_x86_64-kvm-b253.qcow2 $VM.qcow2
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# First resize the image to our desired size
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echo "Resizing image..."
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qemu-img resize $VM.qcow2 205G
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# Now compress it
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echo "Compressing image..."
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qemu-img convert -p -O qcow2 -c $VM.qcow2 $VM-compressed.qcow2
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mv -v $VM-compressed.qcow2 $VM.qcow2
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# Create a cloud-init ISO with network config
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echo "Creating cloud-init ISO..."
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mkisofs -output $VM-cidata.iso -volid CIDATA -rock user-data meta-data network-config
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# Echo the configuration for verification
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echo "Creating VM with the following network configuration:"
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echo "VM Name: $VM"
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echo "IP Address: $IP"
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echo "Gateway: $GATEWAY"
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echo "DNS Servers: $DNS"
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echo "MAC Address: $MAC_ADDRESS"
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echo "Files have been created in $D/$VM"
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echo
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echo "To complete VM creation on the hypervisor, run:"
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echo "virsh pool-create-as --name $VM --type dir --target $D/$VM"
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echo "virt-install --import --name ${VM} \\"
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echo " --memory 4096 --vcpus 4 --cpu host \\"
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echo " --disk ${VM}.qcow2,format=qcow2,bus=virtio \\"
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echo " --disk ${VM}-cidata.iso,device=cdrom \\"
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echo " --network bridge=br0,model=virtio,mac=${MAC_ADDRESS} \\"
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echo " --os-variant=ol9.5 \\"
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echo " --noautoconsole"
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