Database Migrations and Kamal

brownm · June 23, 2025, 4:59pm

Hi all,

I’m deploying a ServiceStack-based Blazor Server app using Kamal for container-based deployment. Everything is working well overall, but I’m trying to determine the best pattern for executing database migrations as part of the deployment process.

brownm · June 23, 2025, 5:07pm

I think I answered my own question. The release github action will run migrations.

mythz · June 23, 2025, 6:17pm

FYI this is where the built-in GitHub Action + Kamal templates run the DB migrations:

github.com/NetCoreTemplates/blazor

.github/workflows/release.yml

560a98884


      
          - name: Migration
            if: env.HAS_MIGRATIONS == 'true'
            run: |
              kamal server exec --no-interactive 'echo "${{ env.KAMAL_REGISTRY_PASSWORD }}" | docker login ghcr.io -u ${{ env.KAMAL_REGISTRY_USERNAME }} --password-stdin'
              kamal server exec --no-interactive "docker pull ghcr.io/${{ env.image_repository_name }}:latest || true"
              kamal app exec --no-reuse --no-interactive --version=latest "--AppTasks=migrate"