Troubleshooting Knox issue

[Ying Chen <yi...@gmail.com>]

Hello -

Recently I have run into an issue on an older cluster using Knox 1.4.0.

I have a REST service that is running on the Hadoop cluster.  I've
configured a Knox topology to route to WebHDFS as well as this REST service
that I built.

I am able to connect to WebHDFS thru knox, but for some reason it is not
able to reach the REST services.  Knox returns 500 Server Error,  /
IOException Service connectivity error.

The REST service is running, and I am able to curl to that REST service on
the port specified in the topology file...

Any suggestions as to what to check next ?

Thanks in advance for your help.

Ying

Re: Troubleshooting Knox issue

[larry mccay <lm...@apache.org>]

Hi Ying -

You didn't mention whether you added a service definition for your REST
service or not.
I would really expect a 404 without one but it sort of depends on what your
topology looks like.

If you would like to send the gateway.log, gateway-audit.log and topology
files, I'll take a look.

thanks,

--larry

On Mon, Jun 14, 2021 at 6:41 PM Ying Chen <yi...@gmail.com> wrote:

> Hello -
>
> Recently I have run into an issue on an older cluster using Knox 1.4.0.
>
> I have a REST service that is running on the Hadoop cluster.  I've
> configured a Knox topology to route to WebHDFS as well as this REST service
> that I built.
>
> I am able to connect to WebHDFS thru knox, but for some reason it is not
> able to reach the REST services.  Knox returns 500 Server Error,  /
> IOException Service connectivity error.
>
> The REST service is running, and I am able to curl to that REST service on
> the port specified in the topology file...
>
> Any suggestions as to what to check next ?
>
> Thanks in advance for your help.
>
> Ying
>
>
>
>
>
>
>