topic 502 Proxy Error while deploying model on SAS Model Manager in Administration and Deployment

502 Proxy Error while deploying model on SAS Model Manager

ern_23 — Mon, 15 Nov 2021 10:57:04 GMT

Dear Community,

I am trying to deploy a model I developed on Python through SAS Model Manager. I have successfully imported model into SAS Viya but when I try to publish model into production I get the following error:

502 Proxy Error Proxy Error The proxy server received an invalid response from an upstream server. The proxy server could not handle the request POST /modelManagement/publish. Reason: Error reading from remote server

I have made a small search online and come across with this link (https://support.sas.com/kb/60/789.html) and thought it may be related to this as stated in the link. I made the asked changes on the system however still facing the same issue. I am wondering if anyone of you may have an idea on fixing the problem.

Thank you.

Eren

Re: 502 Proxy Error while deploying model on SAS Model Manager

gwootton — Mon, 15 Nov 2021 14:23:33 GMT

It sounds like httpd is forwarding the request from the browser to the modelManagement endpoint service, which is responding in a way httpd doesn't understand so can't return it to the browser. I'd check the httpd logs (/var/log/httpd) and model management logs for errors (sas logs are found in /opt/sas/viya/config/var/log/<service>/default).

Re: 502 Proxy Error while deploying model on SAS Model Manager

alexal — Mon, 15 Nov 2021 14:28:38 GMT

Check the most recent log files in these directories

/opt/sas/viya/config/var/log/modelpublish/default/
/opt/sas/viya/config/var/log/modelrepository/default/

Do you see any errors while you are trying to publish your model? Also, what publishing destination are you using? MAS?

Re: 502 Proxy Error while deploying model on SAS Model Manager

AlejandraWest — Fri, 09 Sep 2022 11:34:19 GMT

Most often, the error appears in the browser Google Chrome or Opera. This error message looks a little different in other browsers, such as the standard Microsoft Edge. But in any case, the browser will say "No connection to the Internet" and ask you to check the proxy settings. And this problem occurs because of incorrect proxy server settings. When a proxy server is enabled in the settings of Windows or Android, the wrong addresses are set, or the server simply doesn't work. As a rule, proxy server settings must be disabled. To avoid these errors, it is worth buying only original proxies. At the moment, there is a different proxy pricing, so everyone can find something suitable for themselves. It is not uncommon for users to turn them on themselves, following some instructions, or by accident. Or some programs do. To remove the error related to proxies, we need to disable these settings in the Windows settings, in the browser, or in the Android settings.