Semaphore UI

Modern UI for Ansible, Terraform/OpenTofu/Terragrunt, PowerShell and other DevOps tools.

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If your project has grown and deploying from the terminal is no longer feasible, then Semaphore UI is the tool you need.

Demo

Try Semaphore UI online

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What is Semaphore UI?

Semaphore UI is a modern web interface for managing popular DevOps tools.

Semaphore UI allows you to:

• Easily run Ansible playbooks, Terraform and OpenTofu code, as well as Bash and PowerShell scripts.
• Receive notifications about failed tasks.
• Control access to your deployment system.

Key Concepts

1. Projects is a collection of related resources, configurations, and tasks.
2. Task Templates are reusable definitions of tasks that can be executed on demand or scheduled.
3. Task is a specific instance of a job or operation executed by Semaphore.
4. Schedules allow you to automate task execution at specified times or intervals.
5. Inventory is a collection of target hosts (servers, virtual machines, containers, etc.) on which tasks will be executed.
6. Variable Group refers to a configuration context that holds sensitive information such as environment variables and secrets used by tasks during execution.

Getting Started

You can install Semaphore using the following methods:

• Docker
• Deploy a VM from a marketplace:
  • AWS
  • DigitalOcean
  • Vultr
  • Yandex Cloud
• Snap
• Binary file
• Debian or RPM package

Docker

The most popular way to install Semaphore is via Docker.

docker run -p 3000:3000 --name semaphore \
	-e SEMAPHORE_DB_DIALECT=sqlite \
	-e SEMAPHORE_ADMIN=admin \
	-e SEMAPHORE_ADMIN_PASSWORD=changeme \
	-e SEMAPHORE_ADMIN_NAME=Admin \
	-e SEMAPHORE_ADMIN_EMAIL=admin@localhost \
	-d semaphoreui/semaphore:latest

We recommend using the Container Configurator to get the ideal Docker configuration for Semaphore.

<!-- ### SaaS We offer a SaaS solution for using Semaphore UI without installation. Check it out at [Semaphore Cloud](https://portal.semaphoreui.com). -->

Other Installation Methods

For more installation options, visit our Installation page.

Documentation

• User Guide
• API Reference
• Postman Collection

Awesome Semaphore

A curated list of awesome things related to Semaphore UI.

• Ebdruplab — Ansible Collections — Ansible modules and a role for managing Semaphore.
• SemaphoreUI MCP Server — A Model Context Protocol (MCP) server that provides AI assistants with powerful automation capabilities for SemaphoreUI.
• Terraform SemaphoreUI Provider — Manage Semaphore UI resources using Terraform.
• PSSemaphore — A PowerShell module designed to work against the Ansible Semaphore REST API.

Contribution

• Contribution Guide
• Dev Container (default user admin / changeme)

License

MIT © Denis Gukov