> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/feature-management-experimentation/new-to-fme/sdks-and-customer-deployed-components/examples/synchronizer-docker-ecs.md).
# Deploy a Synchronizer Docker container in Amazon AWS
### Overview
This page provides instructions on how to deploy the Split Synchronizer Docker container using Amazon AWS ECS service.
### Before you begin
* AWS CLI installed and configured
* Docker installed
* An AWS account with permissions to use ECS and ECR
* Split Synchronizer Docker image or access to `splitsoftware/split-synchronizer`
### Step-by-step Guide
1. In the AWS console, go to **ECR** → **Create repository**.
2. Provide a name for your new repository.
3. Once created, note the repository URL — it will be used later.
4. Authenticate Docker to AWS ECR by running `$(aws ecr get-login --no-include-email --region us-east-2)`. If this fails, check AWS help pages.
5. Pull the Synchronizer image locally by running `docker pull splitsoftware/split-synchronizer`.
6. Get the image ID by running `docker images`.
For example:
```bash
REPOSITORY TAG IMAGE ID CREATED SIZE
splitsoftware/split-synchronizer latest 3179320c768e 3 weeks ago 941MB
```
7. Tag the image for your AWS ECR repository by running `docker tag 3179320c768e 082XXXXX925.dkr.ecr.us-east-2.amazonaws.com/splitsync`.
8. Push the image to AWS ECR by running `docker push 082XXXXX925.dkr.ecr.us-east-2.amazonaws.com/splitsync`. The image appears in the AWS ECR Repositories list.
9. Go to **ECS** → **Clusters** → **Create**.
10. Select AWS Fargate (or your preferred cluster type).
 
11. Go to **ECS** → **Task Definitions** → **Create new Task Definition**.
 
12. Choose the launch type.
13. Under **Task Size**, set the task memory to 2GB and CPU to 1 vCPU.
14. Add a container to the task:
* Container name: Enter a descriptive name.
* Image: Use your AWS ECR URL (e.g., `082XXXXX925.dkr.ecr.us-east-2.amazonaws.com/splitsync`).
* Port mappings:
```bash
3000/tcp
3010/tcp
```
* Environment variables (adjust as needed):
```nginx
SPLIT_SYNC_APIKEY
SPLIT_SYNC_REDIS_HOST
SPLIT_SYNC_REDIS_PORT
SPLIT_SYNC_REDIS_DB
SPLIT_SYNC_REDIS_PASS
SPLIT_SYNC_ADMIN_USER
SPLIT_SYNC_ADMIN_PASS
```
15. Click **Add**, then **Create**.
16. Once created, **Run** the task.
 
17. Click the **Task ID** → **Logs** tab.
You should see Synchronizer’s startup output.