Scalr - Autoscaling for Clouds

Scalr allows to scale Cloud instances based on policy checks in a configurable interval. Scalr has 2 pluggable interfaces: cloud, policy.

Cloud Adapters

This is the connector to the API of your Cloud provider. It reads current available servers of your Scalr group and scales up and down based on a calculation factor received from one or more policies:

• cloudscale.ch
• Hetzner Cloud
• DigitalOcean
• Apache CloudStack
• Vultr

Policy Adapters

A policy defines check of a target value (amount of CPU, amount of HTTP requests, etc) and where to gather the metric from, such as the following.

Note

Multiple policies can be used in a single config.

• Prometheus
• Time Policy
• HTTP endpoint returning JSON
• Random metric (for testing)

Config Interfaces

Your Cloud and policy configuration are defined by a configuration. Scalr reads its configuration on every run and can be changed inbetween runs.

• Static YAML file (see a sample)