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dstack Usage Guide

This guide covers deploying and managing applications on dstack. For infrastructure setup and self-hosting, see the Deployment Guide.

You can manage VMs via the dashboard or CLI.

Deploy an App

Open the dstack-vmm webpage http://localhost:9080 (change the port according to your configuration) on your local machine to deploy a docker-compose.yaml file:

VMM Interface

After the container is deployed, it should take some time to start the CVM and the containers. Time would vary depending on your workload.

  • [Logs]: Click this button to view the CVM logs and monitor container startup progress
  • [Dashboard]: Once the container is running, click this button to view container information and logs. (Note: This button is only visible when dstack-gateway is enabled. If disabled, you'll need to add a port mapping to port 8090 to access the CVM dashboard)
Guest Agent Dashboard

Pass Secrets to Apps

When deploying a new App, you can pass private data via Encrypted Environment Variables. These variables can be referenced in the docker-compose.yaml file as shown below:

Secret Management

The environment variables will be encrypted on the client-side and decrypted in the CVM before being passed to the containers.

Access the App

Once your app is deployed and listening on an HTTP port, you can access it through dstack-gateway's public domain using these ingress mapping rules:

  • <id>[-[<port>][s|g]].<base_domain> maps to port <port> in the CVM

Examples:

  • 3327603e03f5bd1f830812ca4a789277fc31f577-8080.test0.dstack.org - port 8080 (TLS termination to any TCP)
  • 3327603e03f5bd1f830812ca4a789277fc31f577-8080g.test0.dstack.org - port 8080 (TLS termination with HTTP/2 negotiation)
  • 3327603e03f5bd1f830812ca4a789277fc31f577-8080s.test0.dstack.org - port 8080 (TLS passthrough to any TCP)

The <id> can be either the app ID or instance ID. When using the app ID, the load balancer will select one of the available instances. Adding an s suffix enables TLS passthrough to the app instead of terminating at dstack-gateway. Adding a g suffix enables HTTPS/2 with TLS termination for gRPC applications.

Note: If dstack-gateway is disabled, you'll need to use port mappings configured during deployment to access your application via the host's IP address and mapped ports.

For development images (dstack-x.x.x-dev), you can SSH into the CVM for inspection:

# Find the CVM wg IP address in the dstack-vmm dashboard
ssh root@10.0.3.2

Getting TDX Quote in Docker Container

To get a TDX quote within app containers:

1. Mount the socket in docker-compose.yaml

version: '3'
services:
  nginx:
    image: nginx:latest
    container_name: nginx
    volumes:
      - /var/run/dstack.sock:/var/run/dstack.sock
    ports:
      - "8080:80"
    restart: always

2. Execute the quote request command

# The argument report_data accepts binary data encoding in hex string.
# The actual report_data passing to the underlying TDX driver is sha2_256(report_data).
curl --unix-socket /var/run/dstack.sock http://localhost/GetQuote?report_data=0x1234deadbeef | jq .

Container Logs

Container logs can be obtained from the CVM's dashboard page or by curl:

curl 'http://<appid>.<the domain you set for dstack-gateway>:9090/logs/<container name>?since=0&until=0&follow=true&text=true&timestamps=true&bare=true'

Replace <appid> and <container name> with actual values. Available parameters:

Parameter Description
since=0 Starting Unix timestamp for log retrieval
until=0 Ending Unix timestamp for log retrieval
follow Enables continuous log streaming
text Returns human-readable text instead of base64 encoding
timestamps Adds timestamps to each log line
bare Returns the raw log lines without json format

Example response:

$ curl 'http://0.0.0.0:9190/logs/zk-provider-server?text&timestamps'
{"channel":"stdout","message":"2024-09-29T03:05:45.209507046Z Initializing Rust backend...\n"}
{"channel":"stdout","message":"2024-09-29T03:05:45.209543047Z Calling Rust function: init\n"}
{"channel":"stdout","message":"2024-09-29T03:05:45.209544957Z [2024-09-29T03:05:44Z INFO  rust_prover] Initializing...\n"}
{"channel":"stdout","message":"2024-09-29T03:05:45.209546381Z [2024-09-29T03:05:44Z INFO  rust_prover::groth16] Starting setup process\n"}

TLS Passthrough with Custom Domain

dstack-gateway supports TLS passthrough for custom domains.

See the example here for more details.

Upgrade an App

Go to the dstack-vmm webpage, click the [Upgrade] button, select or paste the compose file you want to upgrade to, and click the [Upgrade] button again. The app id does not change after the upgrade. Stop and start the app to apply the upgrade.