Troubleshooting

Applications Domain Not Working?

You see the deployment succeeded, and logs are running, but the domain isn't working? Here's what to check:

Correct Port Mapping: Ensure the domain is using the correct port for your application. For example, if you're using Next.js, the port should be 3000, or for Laravel, it should be 8000. If you change the app port, update the domain to reflect that.
Avoid Using Ports in Advanced Settings: Generally, there's no need to use the Ports feature unless you want to access your app via IP:port. Leaving this feature enabled may interfere with your domain.
Let's Encrypt Certificates: It's crucial to point the domain to your server's IP before adding it in Dokploy. If the domain is added first, the certificate won't be generated, and you may need to recreate the domain or restart Traefik.
Listen on 0.0.0.0, Not 127.0.0.1: If your app is bound to 127.0.0.1 (which is common in Vite apps), switch it to 0.0.0.0 to allow external access.

Logs and Monitoring Not Working After Changing Application Placement?

This is expected behavior. If the application is running on a different node (worker), the UI won't have access to logs or monitoring, as they're not on the same node.

Mounts Are Causing My Application Not to Run?

Docker Swarm won't run your application if there are invalid mounts, even if the deployment shows as successful. Double-check your mounts to ensure they are valid or check the General Swarm Section and find your application, and you will see the real error.

Volumes in Docker Compose Not Working?

For Docker Compose, all file mounts defined in the volumes section will be stored in the files folder. This is the default directory structure:

I added a volume to my docker compose, but is not finding the volume?

For docker compose all the file mounts you've created in the volumes section will be stored to files folder, this is the default structure of the docker compose.

/application-name
    /code
    /files

So instead of using this invalid way to mount a volume:

volumes:
    - "/folder:/path/in/container" ❌

You should use this format:

volumes:
    - "../files/my-database:/var/lib/mysql" ✅
    - "../files/my-configs:/etc/my-app/config" ✅

Logs Not Loading When Deploying to a Remote Server?

There are a few potential reasons for this:

Slow Server:: If the server is too slow, it may struggle to handle concurrent requests, leading to SSL handshake errors.
Insufficient Disk Space: If the server doesn't have enough disk space, the logs may not load.

Docker Compose Domain Not Working?

When adding a domain in your Docker Compose file, it's not necessary to expose the ports directly. Simply specify the port where your app is running. Exposing the ports can lead to conflicts with other applications or ports.

Example of what not to do:

services:
  app:
    image: dokploy/dokploy:latest
    ports:
      - 3000:3000

Recommended approach:

services:
  app:
    image: dokploy/dokploy:latest
    ports:
      - 3000
      - 80

This is only valid for Docker Compose not for Docker Stack.

When using Docker Stack, the ports are exposed automatically, so you don't need to specify them explicitly.

Example of what not to do:

services:
  app:
    image: dokploy/dokploy:latest
    ports:
      - 3000

Recommended approach:

services:
  app:
    image: dokploy/dokploy:latest
    expose:
      - 3000

Then, when creating the domain in Dokploy, specify the service name and port, like this:

domain: my-app.com
serviceName: app
port: 3000

Getting "Bad Gateway Error" When Accessing Your Application Domain

If you're encountering a Bad Gateway Error when accessing your application through its domain, this typically indicates one of several common configuration issues:

Common Causes

Port Mismatch: The configured port might be incorrect
Listen Address Configuration: The service might be listening only on 127.0.0.1 instead of 0.0.0.0

Common Solution for Modern JavaScript Frameworks

This issue frequently occurs with modern JavaScript frameworks like Vite, Astro, or Vue.js applications. By default, these frameworks often listen only on localhost (127.0.0.1).

To resolve this, you need to configure your application to listen on all available network interfaces (0.0.0.0).

Example Configuration for Vite

Here's how to properly configure a Vite application:

import { defineConfig } from "vite";
import react from "@vitejs/plugin-react";
 
export default defineConfig({
	plugins: [react()],
	preview: {
		port: 3000,
		host: true,    // This enables listening on all network interfaces
	},
	server: {        // Also add this for development server
		host: true,    // This enables listening on all network interfaces
		port: 3000
	}
});

Framework-Specific Notes

Vite Apps: Use the configuration above
Astro: Similar configuration in astro.config.mjs
Vue.js: Configure in vite.config.js if using Vite
Other Frameworks: Check your framework's documentation for network interface configuration

Remember to deploy again your application after making these changes for them to take effect.

Docker Compose Volume Mounts

When using Docker Compose, you can configure volume mounts in your docker-compose.yml file:

volumes:
  - my-database:/var/lib/mysql

Creating Configuration Files

If you need to create configuration files before deploying your compose setup:

Go to Advanced -> Mounts
Create a new File Mount
Add your configuration content in the content field
Specify the file path for your configuration

Note: All File Mounts are automatically created in the /files directory. For example, if you create a file named my-config.json, it will be available at /files/my-config.json.

You can then reference this configuration file in your docker-compose.yml:

volumes:
  - ../files/my-config.json:/etc/my-app/config

Failed to initialize Docker Swarm

Error response from daemon: must specify a listening address because the address to advertise is not recognized as a system address, and a system's IP address to use could not be uniquely identified

This error occurs when the Docker Swarm is not properly initialized.

To fix this, you need to assign a the public IP address to the Docker Swarm, ideally you can use a private IP address from your network, but if you require features from docker swarm, you will need to use a public IP address.

curl -sSL https://dokploy.com/install.sh | ADVERTISE_ADDR=your-ip sh

Troubleshooting

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