Dockerized Local Clouds

Avdhoot, Faisal & Prince

Or..

Transmogrifying our pet clouds into sheep...

Aims

• Only need cloud name
• Uses script to create terraform templates
• Single command create/destroy cloud
• Manage software versions etc using saltstack
• Run on local VM infrastructure

Quick Glossary

Terraform

• Infrastructure resource management
• Resource = VM, DNS etc.
• Works with AWS, OpenStack etc
• Explicitly calls out all resources
• Very verbose
• Will cleanly create/destroy resources
• Can minimally provision
• Can plan a change

Example

 

resource "openstack_compute_instance_v2" "cm0" {

    name = "${format("%v-%v","cm0", var.cloudid)}"

    image_name = "${var.image_name}"

    flavor_name = "m1.small"

    region = "${var.region}"

    connection {

            user = "root"

            key_file = "${var.key_file}"

        }

 

Salt Stack

• Configuration Manager + Orchestrator
• Master-minion model
• salt-minion runs on each machine
• Very powerful & fast
• Massively parallel
• State-based configuration

Workflow

Workflow..

• User provides cloud-name
• Script creates folder with terraform templates
• User checks using 'terraform plan'
• User does 'terraform apply' to create resources
• New VM automatically added to salt
• Docker and related tools deployed using salt
• Server configuration generated using predefined data
• Cloudmaster/node deployed using salt-events
• Almost completely automatic deployment

Running Cloud

Questions ?