mirror of
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81 lines
2.4 KiB
Markdown
81 lines
2.4 KiB
Markdown
[](https://travis-ci.org/gianarb/orbiter)
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Public and private cloud or different technologies like virtual machine or
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containers. Our applications and our environments require to be resilient
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doesn't matter where they are or which services are you using.
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This project is a work in progress cross platform open source autoscaler.
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We designed in collaboration with InfluxData to show how metrics can be used.
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It is based on plugins called `provider`. At the moment we implemented:
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* Docker Swarm mode
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* DigitalOcean
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```sh
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orbiter daemon -c config.yml
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```
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Orbiter is a daemon that use a YAML configuration file to starts one or more
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autoscaler and it exposes an HTTP API to trigger scaling up or down.
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```yaml
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autoscalers:
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events:
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provider: swarm
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parameters:
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policies:
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php:
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up: 4
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down: 3
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infra_scale:
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provider: digitalocean
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parameters:
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token: zerbzrbzrtnxrtnx
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region: nyc3
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size: 512mb
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image: ubuntu-14-04-x64
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key_id: 163422
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# https://www.digitalocean.com/community/tutorials/an-introduction-to-cloud-config-scripting
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userdata: |
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#cloud-config
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runcmd:
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- sudo apt-get update
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- wget -qO- https://get.docker.com/ | sh
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policies:
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frontend:
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up: 2
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down: 3
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```
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This is an example of configuration file. Right now we are creating two
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autoscalers one to deal with swarm called `events/php` and the second one with
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DigitalOcean called `infra_scale`.
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## Vocabulary
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* `provider` contains integration with the platform to scale. It can be swarm,
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DigitalOcean, OpenStack, AWS.
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* Every autoscaler supports a k\v storage of `parameters` that you can use to
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configure your provider.
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* autoscaler` is composed by provider, parameters and policies. You can have
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one or more.
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* autoscaler has only or more policies they contains information about a
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specific application.
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You can have only one autoscaler or more with th same provider. Same for
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policies, only one or more. Doesn't matter.
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## Http API
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Orbiter exposes an HTTP JSON api that you can use to trigger scaling UP (true)
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or DOWN (false).
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The concept is very simple, when your monitoring system knows that it's time to
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scale it can call the outscaler to persist the right action
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```sh
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curl -v -d '{"direction": true}' \
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http://localhost:8000/handle/infra_scale/docker
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```
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