grpc keepalive does not effect, nginx will close connection by the minute

[Sergey Kandaurov]

> On 22 Jan 2019, at 06:43, Roar <nginx-forum at forum.nginx.org> wrote:
> 
> Grpc server is sitting at my backends, I use nginx as the proxy to transfer
> http1.1 to http2(grpc) protocol,  I set parameter like below:
> 
> upstream ID_PUMPER {  
>    server 127.0.0.1:58548;
> }
> 
> server {
>    listen 8080 http2;
>    grpc_read_timeout 120s;
>    grpc_send_timeout 120s;
>    grpc_socket_keepalive on;
>    keepalive_timeout 100s;
> 
>    location /utoProto.idProduce.IdProduce {
>        grpc_pass grpc://ID_PUMPER;
>    }
> }
> 
> It will establish connection between nginx and grpc server, but it can not
> hold the connection and the collection will be closed after one minute even
> though I set keepalive_timeout parameter

To tune keepalive timeout to upstream connections,
you need the keepalive_timeout directive of the upstream module,
that is, specified in the upstream{} block.  See for details:
http://nginx.org/en/docs/http/ngx_http_upstream_module.html#keepalive_timeout

-- 
Sergey Kandaurov