CONNECTIVITY ERROR in schema-registry-ui

[aresim95]

Hi, I built schema-registry-ui from source and started it through npm start in a remote machine. Then I opened a ssh tunnel to port 8080 and therefore the UI is available at localhost:8080.

I enabled CORS in schema-registry.properties: access.control.allow.methods=GET,POST,PUT,OPTIONS access.control.allow.origin=*

The configurations in env.js are as follow: var clusters = [ { NAME:"kafka-cluster", SCHEMA_REGISTRY: "http://xxx.xxx.xxx.xxx:8081", PROXY: true, COLOR: "#141414", readonlyMode: true } ];

Then, I also changed the host field in the devServer on file webpack.config.js to the proper hostname. In my cluster SASL authentication is enabled (so also in schema registry).

When I start schema-registry-ui I get CONNECTIVITY ERROR after few seconds. In the error console of my browser I get the following:

[Info] Starting schema-registry controller [Debug] curl -X GET http://xxx.xxx.xxx.xxx:8081/config [Info] Starting schema-registry controller - home (app.d31b2028cdc50b340add.bundle.js, line 1276) [Info] Starting schema-registry controller : list ( initializing subject cache ) (app.d31b2028cdc50b340add.bundle.js, line 1301) [Debug] curl -X GET http://xxx.xxx.xxx.xxx:8081/subjects/ [Error] Failure with : "Get global config rejection : null -1" failure (app.d31b2028cdc50b340add.bundle.js:1112) processQueue (vendor.d31b2028cdc50b340add.bundle.js:88107) (anonymus function) (vendor.d31b2028cdc50b340add.bundle.js:88123) $digest (vendor.d31b2028cdc50b340add.bundle.js:89228) $apply (vendor.d31b2028cdc50b340add.bundle.js:89522) done (vendor.d31b2028cdc50b340add.bundle.js:83503) completeRequest (vendor.d31b2028cdc50b340add.bundle.js:83712) requestError (vendor.d31b2028cdc50b340add.bundle.js:83650) [Error] Failed to load resource: The request waiting time has expired. (config, line 0) [Error] Failed to load resource: The request waiting time has expired. (subjects, line 0)

If I execute the curl commands in the remote machine they work properly.

From what I saw from previous issues, this issue is usually due to disabled CORS or to the PROXY parameter set to false (which I believe to be the default option); however this isn't the case.

Is the problem related to the fact that I connect to the remote machine through ssh or that SASL authentication is enabled? Please help me with this.

Thanks in advance.

[nietzscheson]

@aresim95 look it! https://github.com/simplesteph/kafka-stack-docker-compose/blob/master/full-stack.yml#L50

[jglambed]

Hello @aresim95! it seems possible that SASL authentication blocks the request. Can you run a CURL to GET http://xxx.xxx.xxx.xxx:8081/api/config and see if that is returning a response?

[marcossantiago]

PROXY: "true" to the environment variables did the trick! Thanks.

[mattmadhavan-gmail]

Hello Can I please get the steps for the above? Also how can I connect to schema-registry from schema-registry-ui via basic authentication?

Thanks Matt