# Terminal (/services/terminal)



Open a service and go to **Terminal**. You get a shell inside the running service, in your browser. Use it to look around, check a file, run a migration by hand or test a connection to another service.

## Pick a replica [#pick-a-replica]

With several replicas, choose which one with the **Replica** picker. Unbind picks a healthy one by default.

## Good to know [#good-to-know]

* **The service has to be running.** With nothing running you see **No replica running**.
* **The image needs a shell.** Unbind starts `bash` if it exists and falls back to `sh`. Minimal images with no shell at all cannot be opened.
* **Changes do not last.** Anything you change outside a [volume](/services/volumes) is gone on the next deployment. Do not fix things here. Fix them in the repository and deploy.
* **You need the editor role** on the service.
* **It only works signed in, from the UI.** API keys cannot open a terminal.