StackStorm is a powerful event-driven automation platform that enables you to create complex workflows easily and effectively. By utilizing Ansible roles and playbooks tailored for StackStorm, you can swiftly set up your automation infrastructure. This guide will walk you through the process of installing StackStorm using Ansible, complete with troubleshooting tips to ensure a smooth deployment.

Prerequisites

Before we dive into the installation, ensure that you have the following requirements met:

• A supported version of Ansible.
• At least 2 GB of memory and 3.5 GB of disk space.
• Firewall settings allowing http and https ports.

Supported Platforms

StackStorm supports the following platforms:

• Ubuntu Focal (20.04)
• RHEL 7 and CentOS 7
• RHEL 8 and Rocky Linux 8

Installation Steps

Here’s how to deploy StackStorm using Ansible:

Deploying StackStorm

Run the following command in your terminal:

ansible-playbook stackstorm.yml

Defining Variables

You can customize the deployment using various variables in your playbook or inventory. Here’s a breakdown of some important variables:

• st2repo: Controls the StackStorm PackageCloud repository (e.g., stable, unstable).
• st2: Specifies the version of StackStorm (latest or a specific version).
• st2_config: A hash containing StackStorm’s configuration settings.
• st2_system_user: The system user from which StackStorm executes its actions.

Installation Examples

To install the latest stable StackStorm locally, use:

ansible-playbook --inventory localhost, --connection local stackstorm.yml

To install StackStorm on a remote machine:

echo stackstorm.example.com > inventory
ansible-playbook --inventory inventory stackstorm.yml

Understanding the Code: An Analogy

Think of deploying StackStorm with Ansible as setting up a new team of chefs (servers) in a restaurant (your automation environment). The ansible-playbook command is like a master cookbook that tells each chef what dish (service) they are responsible for. The variables are the ingredients list for each dish, where you can specify which flavors (versions or configurations) you want to use.

By running this cookbook, your chefs will be set to create delicious meals (executing automated actions) in no time!

Troubleshooting

If you encounter issues during deployment, consider these troubleshooting steps:

• Ensure your Ansible version is compatible with the StackStorm roles and playbooks.
• Verify that firewall rules allow HTTP and HTTPS traffic to access the StackStorm Web UI.
• If you are working behind a proxy, set the environment variables http_proxy, https_proxy, and no_proxy in your playbook. For example:

environment:
  http_proxy: http://proxy.example.net:3128
  https_proxy: http://proxy.example.net:3128
  no_proxy: 127.0.0.1,localhost

• For persistent issues, check the configuration files mentioned in your variables for correctness.

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