IONOS-FAS

IONOS Fast Autoscale Service (FAS)

This Python service will provide you with a REST endpoint to scale your infrastructure Up or Down.

This POC will enable you to start scaling up or down:

1 Template Server with:

• 1 Disk
• Multiple network cards
• 1 Network card connected to 1 Network Load Balancer

Essential Configuration Files

• Rename ionos-example.py in ionos.py and set your username/password
• Configure at leas one section in the IONOS-FAS.ini file following the template

How to run the script

This is a POC so please do not run the service in a public server. I advise you to protect the port where the script is listening an preferrably, just keeping it runnig locally on 127.0.0.1:5000

LIMITATIONS

This script is a POC and as such has limitations:

• Please make sure to specify in the configuration file which one is the network ID connecting the machines to the Network Loadbalancer as the script does not looks for it
• Please make sure your master server does have only one disk as for the moment we do snapshot and replicate only 1
• Make sure your Network Loadbalancer has only one forwarding rule. you can manage more forwarding rules but you will need more sections in the configuration file.
• Min=1 means delete all the replica, leave the origin server. Setting Min=0 does have no effect on your infrastructure

API Reference Guide

The service will expose 3 endpoints and some of those will accept parameters:

• /scaledown?ASgroup=

  • Example: 127.0.0.1:5000/scaledown?ASgroup=app01

• /scaleup?ASgroup=

  • Example: 127.0.0.1:5000/scaleup?ASgroup=app01

• /snapshot