title	Semaphore UI Documentation
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Semaphore UI Documentation

Semaphore UI is a self-hosted web UI and API for running Ansible, Terraform/OpenTofu, Shell, PowerShell, and Python automation. It gives your team one place to run playbooks and scripts, keep credentials encrypted, schedule jobs, and see who ran what and when.

It ships as a single Go binary or Docker image, runs on Linux, macOS, and Windows, and stores data in SQLite, MySQL, or PostgreSQL.

:::tip[Quick start]

Run Semaphore with SQLite in one command, then open http://localhost:3000 and log in as admin / changeme.

docker run -d -p 3000:3000 \
  -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 \
  -v semaphore-data:/var/lib/semaphore \
  semaphoreui/semaphore:latest

For production, see Installation for Docker Compose, packages, Kubernetes, and binary installs. Then follow Getting Started to run your first task.

:::

Install and configure

Get a server running and connect it to your database, identity provider, and network.

• Installation
• Configuration
• Reverse proxy and TLS
• LDAP and OpenID Connect
• Security hardening

Run automation

Organize work into projects, connect repositories and credentials, and run tasks on demand or on a schedule.

• Getting started: first task in six steps
• Projects and Teams
• Task templates and Tasks
• Key Store, Inventory, Variable Groups
• Schedules and Workflows (Pro)

Operate at scale

Distribute execution, run redundantly, and keep the service observable and up to date.

• Runners
• High availability
• Upgrading
• Logs and Metrics
• Notifications

Reference

Exact options and endpoints when you already know what you are looking for.

• Configuration file and Environment variables
• REST API
• CLI
• CI/CD integration
• Troubleshooting FAQ

Guides by tool {#guides-by-tool}

Ansible Terraform / OpenTofu Shell PowerShell Python

Help and community {#help-and-community}

• Questions: ask on Discord.
• Bugs and feature requests: open an issue on GitHub.
• Source code: github.com/semaphoreui/semaphore.
• Pro and Enterprise: License activation.