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
