xiaod0ng/zkkyc-issuer

Self Hosted Issuer Node

Running the system for the first time

Common steps

1. Install git on linux system. I am using windows subsystem for linux (WSL) on windows 11.

2. Clone the repository

git clone https://github.com/Xiaod0ng/zkKYC-Issuer

3. Update ISSUER_ETHEREUM_URL variable in .env-issuer. I'm using Alchemy here.

4. Follow docker documentation to turn on Docker Desktop for WSL

5. Run make up in Linux terminal

6. Run the following command to add vault toekn to configuration file

make add-vault-token

7. Run the following command to set private key

make private_key=<YOUR_WALLET_PRIVATE_KEY> add-private-key;

8. Run the following command to generate a new issuer DID

make generate-issuer-did

9. Run make run-ui to start the webpage

After the above steps, http://localhost:8088 should work properly.

Public URLs setup

Open network tab when loading the UI page, you can find that UI page is calling UI API for schemas and status.

To allow connection from Polygon ID wallet, you need to make both UI API (:3002) and UI (:8088) public. For temporary testing purpose, I am using ngrok and localtunnel to establish the public URLs.

1. In .env-issuer, edit ISSUER_SERVER_URL to ngrok static domain. In my case, the variable value is https://usefully-blessed-sunbird.ngrok-free.app/. You need to set your own value. Related ngrok documentation can be found here.

2. In .env-api, edit ISSUER_API_UI_SERVER_URL to localtunnel public URL. In my case, the variable value is https://xd-issuer.loca.lt. You need to set your own value. Related localtunnel documentation can be found here.

3. Run make restart-ui to restart the docker services since the environment variables are changed.

4. Open a local terminal with administrator rights (localtunnel may return error if not with admin rights), run lt --subdomain xd-issuer --port 3002 to establish issuer API public URL. You need to use your own value.

5. Open https://xd-issuer.loca.lt, follow the instructions on the page to whitelist the IP address.

6. After finishing the above steps, open ngrok terminal, run ngrok http --domain usefully-blessed-sunbird.ngrok-free.app 8088 to start ngrok public URL. You need to use your own value.

7. Open https://usefully-blessed-sunbird.ngrok-free.app in the browser, it should be like this.

Not the first time

Remove services and start again

1. Run make down to remove existing services

2. Run make up to start the services

3. Run make delete-did to remove current DID

4. Delete the value of ISSUER_API_UI_ISSUER_DID in .env-api

5. Run make generate-issuer-did to generate a new issuer DID

6. Run make run to start API

7. Run make run-ui to start UI

8. Follow Public URLs setup to expose the public access.

Resume from last time

If all variables are configured properly, you need to follow the steps below.

1. Start Docker Desktop

2. Go to the issuer-node folder, run docker rm issuer-ui-1 to remove the image first, then run make restart-ui to start the ui again. This is caused by the issue illustrated here.

3. Follow Public URLs setup to expose the public access.

You should be able to navigate the sites.

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After v2.3.1, the issue has been fixed. Just start docker services and establish the public URLs.

Possible Problems

1. Network error after starting UI

   Usually because there are docker images not running. Make sure make run is executed before make run-ui so that the API image is properly initiated. Check docker logs for more information. Some related information in this issue

2. ngrok returns ERR_NGROK_3200 error

   Close the terminal and run again.

3. localtunnel returns server error

   Run the terminal with administrator rights.