92 lines
3.0 KiB
Bash
92 lines
3.0 KiB
Bash
#!/bin/bash
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set -e
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if [[ $# -lt 3 ]] ; then
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cat <<-EOF
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USAGE (RAM in megabytes)
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create_vm VMNAME RAM CPUS DISKSIZE
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EOF
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exit 1
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fi
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VMNAME=$1
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RAM=$2
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CPUS=$3
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DISKSIZE=${4:-10} # 10GB default
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# Directory where image files will be stored
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IMAGE_DIR=/var/lib/libvirt/images
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IMAGE_FILE=${VMNAME}.qcow2
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IMAGE_PATH=$IMAGE_DIR/$IMAGE_FILE
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CIDATA_PATH=${IMAGE_DIR}/cidata-${VMNAME}.iso
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BASE_FILE=${IMAGE_DIR}/base/ubuntu-20.04-server-cloudimg-amd64-disk-kvm.qcow2
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# Create the VM image if it does not already exist
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if [ ! -f "$IMAGE_PATH" ]; then
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echo "info: image file $IMAGE_PATH not found. creating new image"
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# Important: -F qcow2 is required to set the image format
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qemu-img create -b "$BASE_FILE" -f qcow2 -F qcow2 "$IMAGE_PATH" ${DISKSIZE}G
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chmod 600 "$IMAGE_PATH"
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if [ $? -ne 0 ]; then
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echo "error: failed to create image"
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exit 1
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fi
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fi
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# Dump the image info
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qemu-img info "$IMAGE_PATH"
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# Check if the cloud-init metadata file exists
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# if not, generate it
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if [ ! -r $CIDATA_PATH ]; then
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pushd $(dirname $CIDATA_PATH)
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mkdir -p $VMNAME
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cd $VMNAME
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cat > user-data <<-EOS
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#cloud-config
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ssh_authorized_keys:
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- ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCw0I82gT8R4tpsqWGovLyjm2SR2F863MqNz224h3h/wl0xA5Eu0eRro+ELLv2hoebqQbcMsb89X5+7ObhDRar+b7tzDlXq4x+ECkAy6WbDSmBp3kNVd7muT4c9Zw7UxKsIvIm1ven1TkJ3UG80o6PyGiAUlBj4puIQwhp7OVknVutBBe8Rpp4f6BEuWluwpnPxc3KSaGhhr9p10xeX69cfspH40r8vHpI0zp19O5GpfYSOEH64UbwRpN2QypNB8ISmDHFsNGwdz0Ba4qrEOSGU9GveyOcsvEtt630/0fHqtbPBovOYu/FJISQZya2tofDig4EngBCJNfsPCbXFHtlp greg@karekinian.com
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- ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDDyUDR7ZE6HWmjvlfKrG8Ci+q5E4adbyboKvyYVkUXaTYt+DgisPPAqfGkd0yAHgVnmOS/3f5c3D6RrIXcxFmzwpV2BtmGZztBnEYvC5q8XPQhmu6AFl6ZDjh9XzUeO52py8tt5ZJ9W1R2ob/rlgX8txNHi6XwzuvPxZ7NR/iNup7cruBzkHABhwTvTfwaErufr6eNmNjh5VatNTei1ld6yWtmvbYJqJlpq6YyPu9vYNYPg0AB7I+OqOJhzHXhelY28GSP9KF3GDcHDtN1bV21g9+COcdKhMShQaw1WIkfQKdiuFictZIOCP0/uYSiFhyyoSvISiC3eT8zIimRbDRj basti@skddc.local
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runcmd:
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# Enable serial console (for virsh)
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- systemctl enable serial-getty@ttyS0.service && systemctl start serial-getty@ttyS0.service
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- curl -s 'https://raw.githubusercontent.com/zerotier/ZeroTierOne/master/doc/contact%40zerotier.com.gpg' | gpg --import
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- curl -s -o /tmp/install_zerotier 'https://install.zerotier.com/'
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- cat /tmp/install_zerotier | gpg && bash /tmp/install_zerotier
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- zerotier-cli join 8541e5153eb4327c
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EOS
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cat > meta-data <<-EOS
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instance-id: $VMNAME
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local-hostname: $VMNAME
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EOS
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genisoimage -output "$CIDATA_PATH" -volid cidata -joliet -rock user-data meta-data
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chown libvirt-qemu:kvm "$CIDATA_PATH"
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chmod 600 "$CIDATA_PATH"
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popd
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fi
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# setting --os-variant to ubuntu20.04 and ubuntu18.04 breaks SSH and networking
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virt-install \
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--name "$VMNAME" \
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--ram "$RAM" \
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--vcpus "$CPUS" \
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--cpu host \
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--arch x86_64 \
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--os-type linux \
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--os-variant ubuntu16.04 \
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--hvm \
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--virt-type kvm \
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--disk "$IMAGE_PATH" \
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--cdrom "$CIDATA_PATH" \
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--boot hd \
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--network=bridge=virbr0,model=virtio \
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--graphics none \
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--serial pty \
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--console pty \
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--autostart \
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--import
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