Ansible Cosmos Network Creator

✨ An Ansible toolkit for Cosmos networks 💫

Use this toolkit to:

• Join a testnet
• Start a local testnet
• Start a multi-node testnet

🌰 Requirements

• Python 3
• Ansible
  • Install Ansible with pip and not apt:

    pip install ansible
    

🌱 Quick Start

To join the Cosmos Hub public testnet:

1. Clone this repository
2. Run ansible-galaxy install -r requirements.yml to install dependencies
3. Set up SSH access to the target machine
4. Run the playbook

   ansible-playbook node.yml -i examples/inventory-public-testnet.yml -e 'target=SERVER_IP_OR_DOMAIN'
   

5. Log into the target machine to follow the syncing process

   journalctl -fu cosmovisor
   

Watch the video below to see the playbook in action:

🌳 Explore Further

• See the examples for more command, playbook, and configuration options.
• See the Playbook Variables Overview for a list of default variables you can override with the --extra-vars or -e option.
• Visit the Cosmos testnets repo for more information.

Playbook Tags

Use node_control.py to run only part of the node playbook:

./node_control.py [-i inventory] [-t target] operation

The inventory argument is optional and defaults to inventory.yml (e.g. ./node_control.py restart).

The target option is the server IP or domain.

The operation will apply to all the nodes in the inventory:

• restart restarts the node binary/cosmovisor service
• stop stops the node binary/cosmovisor service
• start starts the node binary/cosmovisor service
• reboot reboots the machine
• reset runs node_binary unsafe-reset-all

Role Folder Structure

• The node role provides the core functionality of this toolkit
• Node setup: roles/node/tasks/main.yml
• Default variables: roles/node/defaults/main.yml
• Systemd services: roles/node/templates/
• To add a variable to the node config files, add it to:
  • roles/node/templates/ansible_vars.json.j2

🌴 Automatic Tests

This repository runs different tests automatically as defined below.

Fresh State (weekly)

The fresh state test is run using GitHub Actions and results are displayed with a badge at the top of this readme.

Mainnet exported genesis (bi-weekly)

We export a genesis file from cosmoshub-4 and modify it using our tinkerer script. The exported and modified genesis files can be accessed here.

We run the stateful tests with the modified genesis file when there is a major version of Gaia that is higher than the major version running on cosmoshub-4.

Joining the Public Testnet (weekly)

We test joining the Cosmos Hub public testnet weekly using GitHub Actions and a badge is displayed at the top of this readme.

🔎 Code Standards

• All Python code is formatted to PEP 8 and linted with pylint.
• All YAML code is linted with yamllint.
• See lint.sh and .config/ for details.