
StackStorm - Detailed Review
Developer Tools

StackStorm - Product Overview
Introduction to StackStorm
StackStorm, often abbreviated as ST2, is an open-source, event-driven platform primarily focused on runbook automation and DevOps. Here’s a breakdown of its primary function, target audience, and key features:Primary Function
StackStorm is designed to automate workflows and processes based on defined events or triggers. It supports the Infrastructure as Code (IaC) approach, allowing users to define, share, and execute operational patterns through code. This platform is particularly useful for automating tasks across various systems and infrastructure, making it a valuable tool for DevOps automation.Target Audience
StackStorm is targeted at IT departments, DevOps teams, and engineers who need to automate complex workflows and integrate multiple services. It is used by a variety of professionals, including those in cloud platforms, engineering, and technical architecture roles. Companies like Netflix, Pearson, and Target have utilized StackStorm to streamline their automation processes.Key Features
Event-Driven Automation
StackStorm automates tasks based on events or triggers. It uses sensors to watch for external events, which then emit triggers into the system. These triggers can invoke actions or workflows.Triggers and Actions
Triggers represent external events, while actions are outbound integrations that can be invoked directly or as part of rules and workflows. Actions can include generic actions like SSH or REST calls, as well as custom scripts and integrations with tools like OpenStack and Docker.Rules
Rules map triggers to actions or workflows, applying matching criteria and mapping trigger payloads to action inputs. This allows for conditional logic and automated responses to events.Workflows
Workflows combine multiple actions into more complex processes, defining the order, transition conditions, and data passing between actions. These workflows can be invoked manually or triggered by rules.Packs
Packs are units of content deployment that simplify the management and sharing of StackStorm pluggable content. They group integrations (triggers and actions) and automations (rules and workflows), making it easier to share and reuse content.Audits and Logging
StackStorm maintains a comprehensive audit trail of action executions, including details of triggering context and execution results. This data can be integrated with external logging and analytical tools like LogStash, Splunk, and syslog.ChatOps Integration
StackStorm supports bi-directional integration into most chat environments through a fork of the Hubot project, enabling teams to interact with the platform via ChatOps.Community and Support
StackStorm is supported by a strong open-source community and partners, providing ongoing support and resources. Users can engage with the community through Slack and contribute to the project’s growth. Overall, StackStorm is a versatile tool that allows users to automate a wide range of tasks and workflows, making it an essential component in many DevOps and automation strategies.
StackStorm - User Interface and Experience
User Interface Overview
The user interface of StackStorm, particularly through its web UI component `st2web`, is designed to be intuitive and user-friendly, making it accessible for a variety of users, including those with varying technical skills.Web UI Overview
The `st2web` interface is a React-based HTML5 web application that allows users to control and monitor the execution of actions, workflows, and rules within StackStorm. This web UI provides real-time updates, enabling users to see the entire process of execution, from initiating an action to viewing the results of individual tasks.Key Features
Actions Page
Users can view a list of all registered actions, sorted into logical categories based on the packs they belong to. This page includes details such as the name of the action, the type of runner used, and overview descriptions. Actions can be filtered by name and executed directly from the UI.Execution History
The UI allows users to view the execution history of actions on an action-by-action basis. Each action execution creates a history item, making it easy to track and review past executions.Workflow Executions
Users can explore workflow executions in detail, including the results of individual tasks within those workflows. This feature helps in monitoring and debugging complex workflows.Multiple Server Support
The web UI can be configured to connect to multiple StackStorm servers, allowing users to switch between different environments easily. This is managed through the `config.js` file, which lists the servers and their authentication details.Ease of Use
The interface is structured to be straightforward and easy to use. Here are some key points:Clear Action Listings
Actions are categorized and described clearly, making it simple for users to find and execute the actions they need.Real-Time Updates
The UI provides real-time updates on the execution of actions and workflows, ensuring users are always informed about the status of their tasks.User-Friendly Execution
Executing actions is as simple as selecting the action and clicking the “RUN” button, with parameters and descriptions displayed for clarity.Overall User Experience
The overall user experience is enhanced by the web UI’s ability to serve all necessary files (JavaScript, HTML, CSS, and static files) directly to the browser, ensuring that all components of the application work correctly. The use of a dedicated web server like nginx or Apache further ensures smooth operation. In summary, StackStorm’s web UI is designed to be user-friendly, providing clear and real-time information about actions, workflows, and their executions. This makes it easier for developers and operations teams to automate and manage their tasks efficiently.
StackStorm - Key Features and Functionality
StackStorm Overview
StackStorm is an event-driven automation platform that offers a range of features and functionalities, particularly beneficial for DevOps and ChatOps environments. Here are the main features and how they work:Sensors
Sensors in StackStorm are Python plugins that integrate with external systems to receive or watch for events. When an event occurs, the sensor emits a trigger into the StackStorm system. This allows for real-time monitoring and reaction to various events from different sources.Triggers
Triggers are representations of external events within StackStorm. These can be generic triggers like timers or webhooks, or integration-specific triggers such as Sensu alerts or JIRA issue updates. New trigger types can be defined by writing custom sensor plugins. Triggers serve as the starting point for automations in StackStorm.Actions
Actions are outbound integrations that perform specific tasks. These can be generic actions like SSH commands or REST calls, or integration-specific actions like OpenStack, Docker, or Puppet. Actions can be invoked directly via the CLI or API, or they can be part of rules and workflows. Actions are typically Python plugins or scripts with added metadata to integrate with StackStorm.Rules
Rules map triggers to actions or workflows based on matching criteria. They define the “if-then” logic that determines which actions to take when a trigger is emitted. Rules ensure that the right actions are executed in response to specific events, automating the decision-making process.Workflows
Workflows combine multiple actions into a single, cohesive process. They define the order of actions, transition conditions, and how data is passed between actions. Workflows are useful for automations that require more than one step and can be invoked manually or triggered by rules. Workflows are defined using YAML and are easy to share and review.Packs
Packs are units of content deployment in StackStorm. They group integrations (triggers and actions) and automations (rules and workflows) together, simplifying the management and sharing of StackStorm content. Packs can be downloaded from the StackStorm Exchange, shared on GitHub, or created and shared by users themselves.Audits
StackStorm maintains an audit trail of all action executions, whether manual or automated. This includes detailed records of the triggering context and execution results. These logs can be integrated with external logging and analytical tools like LogStash, Splunk, statsd, and syslog, providing transparency and accountability in automation processes.Integration with Other Tools
StackStorm can integrate with various tools and services, such as PagerDuty, LogicMonitor, and others. For example, integrating with PagerDuty allows for triggering, acknowledging, and resolving incidents directly through StackStorm. Similarly, integrating with LogicMonitor enables the automation of complex IT workflows using alerts from LogicMonitor, which can trigger actions or workflows in StackStorm.AI Integration
While the primary documentation does not explicitly mention AI integration, StackStorm’s automation capabilities are highly flexible and can be extended to include AI-driven components. For instance, you could integrate AI tools or services as part of the actions or workflows, allowing for more sophisticated decision-making processes based on AI outputs. However, as of the current information, there is no built-in AI functionality within StackStorm itself.Conclusion
In summary, StackStorm is a powerful automation platform that leverages event-driven triggers, rules, actions, and workflows to automate various operational tasks. Its flexibility and extensibility make it a valuable tool for automating complex IT workflows and integrating with a wide range of services and tools.
StackStorm - Performance and Accuracy
Performance Improvements
StackStorm has made substantial performance improvements, especially with the release of version 3.5.0. One of the major enhancements involves changes to the database abstraction layer. Previously, StackStorm used EscapedDictField()
and EscapedDynamicField()
for storing execution results and workflow states, which proved to be slow and inefficient for large datasets. These field types required key escaping due to special characters in MongoDB, and the use of mongoengine ORM added additional overhead, leading to significant performance issues.
In version 3.5.0, these issues were addressed by switching to a binary data field type, which avoids the need for key escaping and the slow type conversions associated with mongoengine. Execution results are now serialized as JSON strings using the orjson
library, which offers much better performance on large datasets. This change has resulted in speed improvements of up to 5-15x for actions and workflows handling large datasets.
Real-Life Scenarios
The performance gains are evident in real-life scenarios. For example, a Python runner action that reads a 4 MB JSON file now takes 1 second instead of 12 seconds with the old field type. Similarly, an Orquesta workflow that handles ~650 KB of data now completes in 10 seconds instead of 95 seconds.
Additional Optimizations
Apart from the database layer improvements, other parts of the system have also been optimized. This includes speeding up API and CLI operations by using orjson
for serialization and deserialization, improving pack registration, and enhancing various code segments to reduce execution times. The WebUI has also been optimized to handle large results more efficiently, preventing browser freezing issues.
Accuracy and Reliability
The accuracy and reliability of StackStorm are enhanced through these performance improvements. By reducing the time and CPU cycles required for executing actions and workflows, the system becomes more reliable and less prone to errors. The use of efficient serialization and deserialization methods ensures that data is handled accurately without significant performance overhead.
Limitations and Areas for Improvement
While StackStorm has made significant strides in performance, there are still areas that require attention. For instance, complex data processing within StackStorm tasks can sometimes be cumbersome and less readable compared to using Python scripts directly. This can lead to maintenance and update challenges, especially as scripts evolve.
Additionally, the WebUI, although improved, still has some limitations. While it no longer retrieves and displays very large results by default, it may still try to load syntax highlighting for large datasets, which can cause browser issues.
Conclusion
StackStorm’s performance and accuracy have been substantially improved, particularly with the enhancements in version 3.5.0. These changes address long-standing issues related to handling large datasets, making the system more efficient and reliable. However, there are still areas where improvements can be made, such as enhancing the handling of complex data processing within tasks and further optimizing the WebUI. Overall, StackStorm remains a powerful tool for workflow automation and data processing, offering significant benefits in terms of speed, efficiency, and accuracy.

StackStorm - Pricing and Plans
Pricing Structure Overview
To provide a clear outline of the pricing structure for StackStorm, it’s important to note that the primary sources do not detail a traditional tiered pricing model for the product itself. Here’s what we can gather:Community and Open Source Focus
StackStorm is an open-source project, and as such, it does not have a commercial pricing structure in the traditional sense. The project relies on community contributions and partnerships to manage its expenses.Expenses and Cost Management
The project’s expenses are managed through various cost-saving measures and partnerships. For example, StackStorm has reduced its AWS costs significantly by leveraging the FOSS AWS program and other free or low-cost services like PackageCloud and GitHub.PackageCloud Costs
While StackStorm itself does not have a pricing model, it uses PackageCloud for package management. The costs associated with PackageCloud are based on the plans offered by PackageCloud:Free Plan
10 GB bandwidth, 2 GB storage.Starter Plan
$89/month, 20 GB bandwidth, 5 GB storage.Pro Plan
$150/month, 50 GB bandwidth, 15 GB storage.Enterprise Plan
$699/month, 250 GB bandwidth, 150 GB storage.Enterprise Plan
Custom offer for bandwidth and storage.Funding and Support
StackStorm is supported through the Community Bridge platform powered by the Linux Foundation. This platform allows for transparent funding and contributions to support the project’s maintenance, infrastructure, development, and other initiatives.Conclusion
In summary, since StackStorm is an open-source project, it does not have a commercial pricing structure. Instead, it relies on community support, partnerships, and cost-effective services to manage its operations.
StackStorm - Integration and Compatibility
StackStorm Overview
StackStorm is a versatile and powerful open-source automation platform that integrates seamlessly with a wide range of tools, services, and workflows, making it a valuable asset in the Developer Tools category.Integration with Other Tools
StackStorm is known for its ability to wire together various apps, services, and workflows. Here are some examples of its integrations:PagerDuty
StackStorm can be integrated with PagerDuty to trigger, acknowledge, and resolve incidents. This involves creating a PagerDuty REST API key and a StackStorm service integration. The integration can be set up using either the StackStorm administrative web UI or the command line interface.Jira Service Management
StackStorm integrates with Jira Service Management to automate systems and manage alerts. This integration allows for the use of StackStorm’s actions and APIs to perform various tasks, such as triggering rules and notifying the right people based on on-call schedules. The setup involves adding the StackStorm integration in Jira Service Management and configuring it in the StackStorm administrative web UI.Other Tools and Services
StackStorm’s integration capabilities extend to many other tools and services. It supports event-driven automation, allowing it to integrate with tools like chat platforms (for ChatOps), CI/CD pipelines, and security response systems. This flexibility makes it a valuable tool for automating DevOps tasks and workflows.Compatibility Across Different Platforms and Devices
StackStorm is compatible with several operating systems and can be integrated into various infrastructure setups:Operating Systems
StackStorm supports installation on Ubuntu, RHEL (Red Hat Enterprise Linux), and CentOS. It has specific instructions for upgrading and maintaining the platform on these systems, including updating GPG keys and using package-based installers.Infrastructure
StackStorm can integrate with existing infrastructure without requiring significant changes to current processes or workflows. It supports both cloud and on-premises environments, making it adaptable to different deployment scenarios.Devices
While StackStorm itself is not typically run on individual devices, its automation capabilities can extend to managing and automating tasks across various devices and systems within an organization’s infrastructure.Conclusion
In summary, StackStorm’s flexibility and extensive integration capabilities make it a highly compatible and versatile tool for automating a wide range of tasks and workflows across different platforms and devices. Its open-source nature and active community support further enhance its adaptability and usability.
StackStorm - Customer Support and Resources
StackStorm Customer Support Options
StackStorm offers several comprehensive customer support options and additional resources to help users effectively utilize their event-driven automation platform.Community Support via Slack
One of the most valued support channels is the StackStorm Slack community. Here, users can connect with other users and the core engineers who are actively involved in supporting the community. The Slack channel is open from 9:00 to 17:00 PST, and often later, allowing for rapid-fire discussions that can quickly resolve issues. This platform is ideal for getting help with installation, ChatOps setup, writing sensors, and other technical queries.Support Forum
In addition to Slack, StackStorm has a Support Forum where users can ask questions and search through archives of previous discussions. This forum is another valuable resource for finding solutions to common problems.Documentation and Guides
StackStorm provides extensive documentation that covers various aspects of the platform, including development processes, setting up a development environment, and contributing to the project. The documentation includes guidelines on code style, writing tests, and adding documentation for new features. This resource is particularly useful for developers looking to contribute to the project or customize their StackStorm setup.Bug Reporting and Issue Tracking
If users identify a bug, they can file an issue against the StackStorm repository on GitHub. A good bug report should include the `st2` version, `st2client` version, OS version, Python version, a brief description of the problem, and any relevant logs. This detailed information helps the support team resolve issues more quickly.Contribution and Development Resources
For those interested in contributing to StackStorm, the platform welcomes contributions of any kind, including code, tests, documentation, and examples. The development documentation provides detailed instructions on setting up a development environment using Vagrant images, installing from source, or using Docker and VSCode extensions. There are also guidelines on code style and the necessity of including tests and documentation for any non-trivial changes.Conclusion
By leveraging these support channels and resources, users can get the help they need to effectively use and customize StackStorm for their automation and DevOps needs.
StackStorm - Pros and Cons
Advantages of StackStorm
Event-Driven Automation
StackStorm is highly praised for its advanced event-driven automation capabilities. It allows users to create complex workflows that automate tasks based on various events, such as alerts from monitoring tools, updates from issue trackers, or even direct human interactions.
Flexibility and Integrations
StackStorm is known for its flexibility in integrating with multiple systems and services. It supports a wide range of integrations through sensors, triggers, and actions, which can be customized using Python plugins or scripts. This flexibility makes it versatile for diverse automation needs across different industries, including finance, healthcare, and IT.
Workflow Management
StackStorm offers two workflow variants: ActionChain and Orquesta. Orquesta is the more advanced engine, capable of handling sequential workflows as well as complex workflows with forks, links, and sophisticated data transformations. This makes it suitable for automating multi-step processes efficiently.
Ease of Deployment and Reliability
Users appreciate StackStorm for its ease of deployment and reliability. It integrates well with existing DevOps tools and environments, such as Docker, AWS, and OpenStack, making it a reliable choice for automating repetitive tasks and ensuring consistent operations.
Audit and Logging
StackStorm provides a comprehensive audit trail of action executions, which includes full details of triggering context and execution results. This feature is valuable for integrating with external logging and analytical tools like LogStash, Splunk, and syslog.
Community and Extensibility
Although the community is smaller compared to some other tools like Salt, StackStorm has an active community and is open source. This allows users to create and share their own packs (integrations and automations) on platforms like Github and the StackStorm Exchange.
Disadvantages of StackStorm
Learning Curve
StackStorm might have a steeper learning curve due to the diverse range of features and integrations it offers. While it is not as complex as some other tools, the variety of workflows, sensors, triggers, and actions can require some time to fully grasp.
Smaller Community
Compared to other automation tools like Salt, StackStorm has a relatively smaller community. This can mean fewer pre-built modules and configurations available out of the box, although the community is still active and supportive.
Limited Visual Tools in Open Source Version
The open source version of StackStorm requires console-based development for creating workflows. While the commercial version offers a visual editor (Extreme Workflow Composer), this may not be accessible to all users, particularly those relying on the open source variant.
Dependence on Customization
To fully leverage StackStorm’s capabilities, users often need to write custom sensors, triggers, and actions. While this provides flexibility, it also requires additional effort and technical expertise.
In summary, StackStorm is a powerful tool for event-driven automation and workflow management, offering significant advantages in terms of flexibility, integration, and reliability. However, it may require more time to learn and may not have the same level of community support as some other tools.

StackStorm - Comparison with Competitors
When comparing StackStorm to other products in the automation and AI-driven developer tools category, several key features and alternatives stand out.
Unique Features of StackStorm
- Event-Driven Automation: StackStorm is notable for its advanced event-driven automation capabilities, allowing users to create complex workflows triggered by various events from external systems. This is achieved through sensors, triggers, and rules that map these triggers to actions or workflows.
- Workflows: StackStorm supports two workflow variants: ActionChain and Orquesta. Orquesta is the more advanced engine, capable of handling sequential workflows, forks, links, and sophisticated data transformations and queries.
- Packs and Integrations: StackStorm uses “packs” to manage and share integrations, triggers, actions, rules, and workflows. This makes it easier to deploy and manage automation content.
- Audit Trails: StackStorm provides a detailed audit trail of action executions, which is useful for logging, analytics, and compliance.
Alternatives and Competitors
- Ansible: Known for its simplicity and ease of use, Ansible is a popular alternative for automation tasks. It focuses on configuration management and deployment but lacks the advanced event-driven capabilities of StackStorm.
- Rundeck: Rundeck is another automation tool that excels in job scheduling and execution. While it has strong integration capabilities, it may not offer the same level of workflow complexity as StackStorm’s Orquesta.
- Airflow: Apache Airflow is a platform for programmatically defining, scheduling, and monitoring workflows. It is highly scalable but might require more programming effort compared to StackStorm’s rule-based engine.
- Jenkins: Jenkins is a widely used CI/CD tool that automates various stages of the software development process. While it is highly customizable, it may not have the same level of event-driven automation as StackStorm.
- Terraform: Terraform is primarily an infrastructure as code (IaC) tool and does not offer the same kind of workflow automation as StackStorm. However, it is excellent for managing infrastructure configurations.
Comparison with AI-Driven Tools
While StackStorm is primarily focused on automation rather than AI-driven development, it’s worth noting how it differs from tools that integrate AI:
- Windsurf IDE: This IDE integrates AI for code suggestions, real-time collaboration, and smart editing. Unlike StackStorm, Windsurf is focused on enhancing the coding process with AI rather than automating system workflows.
- Amazon Q Developer: This tool provides AI-powered assistance within the AWS ecosystem, including code completion, security scanning, and natural language interactions. It is more geared towards developers working within AWS and does not offer the same level of automation workflow management as StackStorm.
- JetBrains AI Assistant: This tool integrates AI into JetBrains IDEs for smart code generation, context-aware completion, and proactive bug detection. Like Windsurf and Amazon Q, it is focused on coding efficiency rather than workflow automation.
In summary, StackStorm stands out for its advanced event-driven automation and workflow management capabilities, making it a strong choice for automating complex IT infrastructures. However, for developers looking for AI-driven coding tools, alternatives like Windsurf IDE, Amazon Q Developer, and JetBrains AI Assistant might be more suitable.

StackStorm - Frequently Asked Questions
What is StackStorm?
StackStorm, often referred to as “IFTTT for Ops,” is an event-driven automation platform designed for automated troubleshooting, auto-remediation, security responses, and complex deployments. It integrates various components like rules engines, workflows, and numerous integrations to automate IT operations.
What are the key components of StackStorm?
- Sensors: These are Python plugins that integrate with external systems to receive or watch for events. When an event occurs, a sensor emits a trigger into the StackStorm system.
- Triggers: Representations of external events, such as timers, webhooks, or integration triggers like Sensu alerts or JIRA issue updates.
- Actions: Outbound integrations that can be generic (e.g., SSH, REST calls) or specific (e.g., OpenStack, Docker, Puppet). Actions can be invoked directly or as part of rules and workflows.
- Rules: These map triggers to actions or workflows, applying matching criteria and mapping trigger payloads to action inputs.
- Workflows: These stitch actions together, defining the order, transition conditions, and data passing between actions. Workflows can be sequential or complex with forks, links, and data transformations.
What types of workflows does StackStorm support?
StackStorm supports two workflow variants:
- ActionChain: The older variant that uses simple syntax to define a chain of actions. However, it is limited in handling complex workflows.
- Orquesta: A newer workflow engine that supports sequential workflows and complex workflows with forks, links, and sophisticated data transformations and queries. It is recommended to use Orquesta for more complex automations.
How are workflows created and managed in StackStorm?
Workflows can be created using either console-based development in the open-source version or the Extreme Workflow Composer in the commercial version, which offers a visual editor for designing actions and their sequence in a drag-and-drop process. Workflows are managed in the automation library and can be invoked manually or triggered by rules.
What are packs in StackStorm?
Packs are units of content deployment that simplify the management and sharing of StackStorm pluggable content. They group integrations (triggers and actions) and automations (rules and workflows) together, making it easier to manage and share these components. Packs can be found on the StackStorm Exchange, and users can create and share their own packs.
How does StackStorm handle auditing and logging?
StackStorm maintains an audit trail of action executions, whether manual or automated. This includes full details of the triggering context and execution results. These logs can be integrated with external logging and analytical tools such as LogStash, Splunk, statsd, and syslog.
What kind of integrations does StackStorm offer?
StackStorm offers over 1800 integrations through its packs, which include a wide range of tools and systems such as OpenStack, Docker, Puppet, Sensu, JIRA, and many more. These integrations enable comprehensive automation across various IT infrastructure components.
Is StackStorm actively developed and supported?
Yes, StackStorm is under active development with a roadmap that outlines planned innovations. The community and developers continuously work on new features, bug fixes, and security patches. The project also relies on community contributions and funding through platforms like the Linux Foundation’s Community Bridge.

StackStorm - Conclusion and Recommendation
Final Assessment of StackStorm
StackStorm is a versatile and powerful automation platform that stands out in the Developer Tools and AI-driven product category, particularly for its event-driven automation and workflow orchestration capabilities.Key Features and Benefits
- Event-Driven Automation: StackStorm automates tasks based on triggers and events, using sensors, rules, and actions to respond dynamically. This feature is crucial for environments that require real-time responses.
- Workflow Orchestration: It manages complex, multi-step workflows and connects diverse systems into cohesive pipelines, making it ideal for streamlining processes such as incident response, cloud orchestration, and CI/CD pipelines.
- Extensive Integrations: StackStorm offers pre-built integrations with popular tools like AWS, Slack, and Docker, and is customizable with plugins to meet unique needs.
- Self-Service Automation: The platform provides portals for non-technical users to initiate automations, reducing the dependency on IT teams for routine tasks.
Who Would Benefit Most
StackStorm is highly beneficial for several types of users and organizations:- IT and Operations Teams: These teams can automate routine tasks, incident responses, and cloud resource management, thereby increasing efficiency and reducing manual intervention.
- Development Teams: StackStorm can be used to automate CI/CD pipelines, making the build, test, and deployment process more streamlined and efficient.
- Non-Technical Users: The self-service automation feature allows non-technical users to initiate automations without needing extensive IT support, which can be particularly useful in organizations where IT resources are limited.
Use Cases
- Incident Response: Automate remediation for security alerts and system failures.
- Cloud Orchestration: Streamline the provisioning and management of cloud resources.
- CI/CD Pipelines: Automate builds, tests, and deployments.
- ChatOps: Execute automations through platforms like Slack.