Azure CycleCloud REST API and Autoscaling with Scalelib

This demo shows some minimal examples of how the Azure CycleCloud REST API and cyclecloud-scalelib library can be used to implement custom autoscaling and automated cluster operations in Azure CycleCloud clusters.

See the cyclecloud-scalelib project for detailed usage and examples on building your own autoscaler with Azure CycleCloud

Pre-Requisites

This demo expects that you have a working CycleCloud Installation and understand the basics of CycleCloud and the core concepts of CycleCloud Clusters.

It also requires python 3.8 or later.

Packaging

Clone the Repository
Run the python packaging script to create a redistributable demo tarball
```
python3 ./package.py
```
Extract the dist tarball
```
tar xzf ./dist/cyclecloud-demo-*.tar.gz
```
Create a python virtual environment for the demo
```
cd cyclecloud-demo
./install.sh
```

Activate the virtual environment:

. ~/.virtualenvs/autoscale_demo/bin/activate

Edit demo.py to set your local CycleCloud configuration

CC_CONFIG = {
    "url": "https://localhost:8443",  # Or your CC URL
    "username": "USER",
    "password": "PASS",
    "verify_certificates": False
}

Optionally, change the cluster configuration parameters:

BASE_CLUSTER_PARAMS = {
     "Credentials" : "azure",  # Or your CC account name
     "AzccMachineTypes" : ["Standard_F72S_v2", "Standard_D2_v3"],
     "SubnetId" : "SUBNET_ID",
     "ImageName" : "cycle.image.centos7",
     "UseLowPrio" : False,
     "Region" : "REGION"
 }

Start the demo:
```
python3 ./demo.py
```

The demo should create a cluster named "apiTest" and begin scaling it up.
In the console, the demo should show your subscription's current quotas modified by limits imposed by the NodeArrays in the cluster. That information is used to provide the autoscaler the current AvailableCoreCount and AvailableCount (VM instances) in your subscription for each VM SKU.

The autoscaler uses that information to decide which SKU to scale up.

bwatrous/cyclecloud-simple-autoscale-demo

Azure CycleCloud REST API and Autoscaling with Scalelib

Pre-Requisites

Packaging