Exercise 3: The Flash Crash

Time: 30 min
Previous: Exercise 2: The Subterranean Divide
Next: Exercise 4: The Rising Tide

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Asian markets are melting down. The quants need a calculation engine now. You will provision a fully configured VM (disk, secondary volume, production network, SSH key, cloud-init, fixed IP) in one pass.

3.1 Confirm the OS image

Images - confirm your Exercise 2 cloud image is Active (for example official-images/sles16 or the Leap Micro image you uploaded).

3.2 Create algo-trader-01

Virtual Machines → Create:

Field	Value
Name	algo-trader-01
Namespace	prod
CPU	2
Memory	2 GiB
SSH Key	prod/default

Labels → Add:

Key	Value
stage	prod

Do not click Create yet.

3.3 Volumes and network

Volumes tab:

• Root volume: select your cloud image, size 5 GiB
• Add Volume → name market-data-vol, size 1 GiB

Networks tab:

Field	Value
Network	prod/service

3.4 Cloud-init and fixed IP

Advanced Options → Cloud Configuration:

• User Data Template: prod/prod (if you created it), or paste equivalent user-data
• Network Data:

version: 2
ethernets:
  enp1s0:
    addresses:
      - 192.168.122.50/24
    gateway4: 192.168.122.1
    nameservers:
      addresses:
        - 192.168.122.1

Note: Interface name may be eth0 on some images. If the VM boots without the static address, check ip link in the web console and adjust.

Node Scheduling (optional): run on nodes matching label stage=prod only if you labeled hosts; otherwise leave default (any node).

Click Create. Wait until the VM is Running and shows an IP.

3.5 Web console and SSH

1. Open the VM → Console and confirm login / cloud-init finished.
2. From the KVM host:

ssh -o StrictHostKeyChecking=no opensuse@192.168.122.50
# or the default user for your image
hostname
exit

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Next: Exercise 4: The Rising Tide