
Semaphore
Modern UI for Ansible, Terraform, and other DevOps tools
The Lens
Semaphore gives you a web UI to manage and trigger your Ansible playbooks and shell scripts. It's a control panel for your DevOps automation. The open source version is useful: you get task scheduling, inventory management, team access controls, and a clean dashboard to see what ran and what failed. For a solo dev or small team managing a handful of servers, this is more than enough. Self-hosting is straightforward: single Go binary, throw it behind a reverse proxy, point it at a Postgres or MySQL database.
Semaphore Pro adds LDAP/AD integration, audit logs, and priority support starting at $99/mo. Worth it if you're a growing team that needs enterprise auth. For everyone else, the free version handles the core workflow.
Solo devs: use the free version. Small teams (2-10): free version covers you. Growing teams needing LDAP: evaluate Pro. Large orgs: you probably already have AWX or Terraform Cloud.
The catch: it's not a CI/CD platform. If you need build pipelines and artifact management, look at Woodpecker CI or Jenkins. Semaphore is specifically for running automation tools through a UI instead of SSH sessions.
Free vs Self-Hosted vs Paid
open core### Free Tier (Self-Hosted)
The open source Semaphore covers the full core workflow: task templates, scheduling, inventory management, user management, notifications (Slack, Telegram, email), and support for Ansible, Terraform, Bash, and PowerShell. No user limits, no run limits.
### Self-Hosted Setup
Single Go binary. Needs a database (Postgres, MySQL, or BoltDB for testing). Minimal resource requirements: runs comfortably on a $5/mo VPS. Put it behind Nginx or Caddy with TLS and you're done. Updates are manual but infrequent.
### Paid Tier: Semaphore Pro
- **Starts at $99/mo** for teams - LDAP/Active Directory integration - Audit logging - Priority support - Advanced RBAC
### The Math
Self-hosted free: $5-10/mo for a VPS + maybe 2 hours/mo of maintenance. Semaphore Pro at $99/mo makes sense only when your team needs enterprise directory integration. If you're using GitHub OAuth or local accounts, the free version does everything you need.
### Verdict
Stay free until LDAP or compliance audit logs become non-negotiable. That's the only real trigger to pay.
Free self-hosted covers everything most teams need. Pay $99/mo only when LDAP or audit logs are required.
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