goloso

Goloso

Goloso is an Ansible callback server over NSQ

The idea here it to have an automatic bootstrap mechanism using a callback system to run Ansible playbooks remotely.

Whenever a instance goes up, it posts a message saying “hi guys, I’m alive” to a central message broker. Them comes Goloso, our engine which consumes from a “bootstrap” topic and orders the playbook run into that fresh new and sweet instance.

This goloso points to a single Ansible playbook, the master entrypoint. This playbook knows what to choose based on the variables/tags received.

System Overview

The system has three main components.

• The message producer or new instance which will post a JSON message to NSQ.

• NSQ, the message broker.

• Goloso, consuming messages from NSQ and running Ansible playbooks.

Install Goloso

go get github.com/gophergala/goloso

Goloso Dependencies

go get github.com/bitly/go-nsq
go get github.com/bitly/nsq/util
go get github.com/boltdb/bolt

Install NSQ

brew install nsq

Run NSQ

nsqlookupd
nsqd --lookupd-tcp-address=127.0.0.1:4160
nsqadmin --lookupd-http-address=127.0.0.1:4161
open http://localhost:4171

cloud-init

This shell script scripts/cloud_init_bootstrap.sh is the spark of the system. This script should be set under your instance user-data and It will produce the message above.

{
    "event": "bootstrap",
    "uuid": "51DC9184-4499-4FDA-9EA3-4D19CD07486A",
    "instance_id": "i-806086",
    "ipaddress": "127.0.0.7",
    "os": "unknown"
}

Install Ansible

brew install ansible

Future

• web admin interface
• replay events