If you have firewall enabled on Synology, you must also Allow port 22.Īfter enabling SSH on SYnology, you can SSH on to Synology and run the below command to pull the Docker image of Cosmos Emulator. This step is required when Direct mode setting is configured using Cosmos DB SDKs (.NET, Java). Use the following steps to run the emulator on macOS: Retrieve the IP address of your local machine.

For this purpose we need to enable SSH on Synology so that we can SSH to Synology and run docker commands directly. To get started, visit the Docker Hub and install Docker Desktop for macOS. Since Cosmos DB Emulator image is hosted on Microsoft Registry ( ) which does not provide UI/discovery service, Synology’s Docker app, cannot pull images from Microsoft Registry. The goal is to run Cosmos DB emulator as a Docker container on Synology. In this post we will see how to set it up on Synology NAS. Instead, I decided to use my Synology NAS to host the emulator directly on my NAS as it is built on Linux and also because it allows the emulator running and available for me all the time.

Recently I wanted to setup Cosmos DB Emulator on Mac, but I did not want to set it up such that I keep it running always on my Mac. If you want to run the emulator on Mac/Linux though, the emulator is now in preview mode at the time of writing this and uses Docker to make it available. Cosmos DB Emulator is great for developing against Azure Cosmos DB in your local environment. Develop and test your application locally, without creating an Azure subscription or incurring any cost.

Install cosmos db emulator mac