Ephemeral Labs

Dashboard

Your active disposable workspace activity at a glance.

Active sessions

Quick launch

Fresh every time

Workspace catalog

Choose a disposable environment and start practicing.

Student-friendly controls: coding labs now include visible Run, Stop, Terminal, Preview, Open App and Help controls inside the editor. The terminal opens automatically, so beginners do not need to search for it.

My sessions

Open, extend or end your disposable environments.

Sessions use the lease policy assigned to your account/workspace. Near expiry, this portal can ask whether you want more time. If you do nothing, the session expires automatically and its disposable data is removed.

Student help

The platform is designed so a learner can start without knowing terminal commands.

Launch

Choose Python, HTML, PHP, Java or another workspace. A fresh disposable environment opens in your browser.

Edit

Starter files are already there. Change the sample code instead of starting from an empty screen.

Run

Click Run for code, Preview for HTML/PHP, or Open App for a web server port. Output appears in the terminal.

Leave safely

Extend the session if you need more time. Download your project first if you want to keep it. When the session ends, the disposable files, packages and local state are removed.

Top toolbar inside coding labs

▶ RunRuns the current Python, PHP, JavaScript, Java, Go, Ruby, C/C++ or shell file.

■ StopStops the active run, useful for loops or a program that does not finish.

>_ TerminalOpens the command line immediately. It is also shown automatically on startup.

🌐 PreviewStarts and opens HTML/PHP practice sites automatically.

↗ Open AppOpens a local web app port such as 3000 or 5000 through code-server's secure forwarding.

↓ DownloadSaves the complete current project as a ZIP before the disposable session ends.

↑ UploadOpens the platform project importer so a ZIP project can replace the current workspace.

? HelpOpens the workspace-specific START-HERE guide.

Project transfer

From My sessions, use Download project to save the current workspace as a ZIP, or Upload project to replace the running workspace with a ZIP from your computer. This makes it easy to bring homework/projects in and take results out before the disposable session ends.

Graphical Linux desktops

Ubuntu, Debian, Kali Linux and AlmaLinux graphical desktop labs use Ephemeral Labs graphical streaming containers. Once their images are cached they start quickly in the browser and include passwordless sudo for disposable administration practice. They are not separate-kernel VMs; use sudo ephemeral-labs vm-check on the host to check readiness for the upcoming KVM-backed VM tier.

Restricted Code Sandbox

For risky or untrusted user-space snippets, use the Restricted Code Sandbox. It has no normal Internet access, strict CPU/RAM/process limits, dropped Linux capabilities, disposable storage and a short automatic Run timeout.

Isolation boundary: the current single-host Docker sandbox is not a malware detonation lab and is not suitable for ransomware, kernel exploits, container escapes or code designed to attack infrastructure. Those workloads belong on the planned gVisor/microVM/VM backend.

Users & quotas

Create accounts and manage each user’s session limits. Administrator accounts are quota-unlimited.

User	Role	Status	Session policy	Created	Actions

All sessions

Administrative visibility across active and historical workspaces.

User	Workspace	Status	Expires	Extensions	Action

System health

Routing, DNS, TLS and gateway diagnostics.

TLS / gateway diagnostic messages

cPanel lego issuance + proxy diagnostics

No diagnostics loaded.

Useful host commands: sudo ephemeral-labs doctor · sudo ephemeral-labs dns-check · sudo ephemeral-labs dns-sync · sudo ephemeral-labs cert-renew

Platform settings

Configure routing, TLS, DNS automation and session policy.

Platform name

Platform domain

Public port

TLS mode

Let's Encrypt & DNS

Wildcard certificates use DNS-01. cPanel mode can also create/repair the base and wildcard A records automatically.

ACME email

Public IPv4 for wildcard DNS

cPanel API URL

cPanel username

New cPanel API token (blank keeps current)

Automatically manage cPanel base + wildcard DNS
Ensures the platform A record and *.platform A record point to this server. Per-session records are unnecessary.

User & session policy

These are defaults for standard users. Per-user overrides are managed from Users & quotas; administrators are unlimited.

Default max active sessions (standard users)

Extension period (minutes)

Expiry warning (minutes before)

Allow self-registration
Users can create their own account from the login page.

Ephemeral Labs

Welcome back

Dashboard

Active sessions

Quick launch

Workspace catalog

My sessions

Student help

Launch

Edit

Run

Leave safely

Top toolbar inside coding labs

Project transfer

Graphical Linux desktops

Restricted Code Sandbox

Users & quotas

All sessions

System health

TLS / gateway diagnostic messages

Platform settings

Let's Encrypt & DNS

Custom wildcard certificate

User & session policy

Continue working?

Create user

Optional user quota overrides

Manage user

Per-user session policy