NGINX load balancing - Proxy

[Josef Vybíhal]

Seems to me, that you are not using stream{} module as noted by
Francis, and you are still putting server block to http{}. If not,
post nginx -T
J.

On Tue, Feb 15, 2022 at 4:17 PM Carlos Renato <crenatovb at gmail.com> wrote:
>
> Hi Francis,
> Thanks for the reply and willingness to help me.
>
> [root at proxy conf.d]# cat teste.conf
> upstream webgateway {
>     server 192.168.239.151:9090;
>     server 192.168.239.152:9090;
> }
>
> server {
>     listen 9191;
>     proxy_pass webgateway;
> }
> [root at proxy conf.d]#
>
> I cannot start NGINX.
>
> Feb 15 01:56:24 proxy.lab.local systemd[1]: Starting The nginx HTTP and reverse proxy server...
> Feb 15 01:56:24 proxy.lab.local nginx[12274]: nginx: [emerg] "proxy_pass" directive is not allowed here in /etc/nginx/conf.d/teste.conf:8
> Feb 15 01:56:24 proxy.lab.local nginx[12274]: nginx: configuration file /etc/nginx/nginx.conf test failed
> Feb 15 01:56:24 proxy.lab.local systemd[1]: nginx.service: control process exited, code=exited status=1
> Feb 15 01:56:24 proxy.lab.local systemd[1]: Failed to start The nginx HTTP and reverse proxy server.
> Feb 15 01:56:24 proxy.lab.local systemd[1]: Unit nginx.service entered failed state.
> Feb 15 01:56:24 proxy.lab.local systemd[1]: nginx.service failed.
>
> I can only start NGINX if the file is as below.
>
> upstream webgateway {
>    server 192.168.239.151:9090;
>    server 192.168.239.152:9090;
> }
>
> server {
>    listen 9191;
>
>    location / {
>          proxy_set_header Host $host;
>          proxy_set_header X-Real-IP $remote_addr;
>          proxy_pass http://webgateway;
>   }
> }
>
> The behavior on the client is the same.
> I can load HTTP page and cannot HTTPS. On the Web Gateway, I view the access logs with the client's IP.
>
> In tests, I noticed that the "http_pass" below the "listen", I can't start NGINX.
> I had to also put it as "http" or http://webgateway;
>
> If you don't put the parameters below, the proxy tries to load the page http://webgateway.
> proxy_set_header Host $host;
>
> The parameter below registers the IP-Real of the client in the proxy.
> proxy_set_header X-Real-IP $remote_addr;
>
> Any tips? Thank You.
>
>
>
> Em ter., 15 de fev. de 2022 às 11:16, Francis Daly <francis at daoine.org> escreveu:
>>
>> On Tue, Feb 15, 2022 at 10:29:50AM -0300, Carlos Renato wrote:
>>
>> Hi there,
>>
>> > My file is like this.
>>
>> Untested by me, but I have edited this to now resemble what I think
>> you want...
>>
>> > upstream webgateway {
>> >    server 192.168.239.151:9090;
>> >    server 192.168.239.152:9090;
>> > }
>> >
>> > server {
>> >    listen 9191;
>> >    proxy_pass webgateway;
>> > }
>>
>> ...that is, keep your upstream{} but remove the keepalive; adjust your
>> server{} to just have "listen" and a different "proxy_pass"; and put
>> the whole thing inside "stream{}" not "http{}".
>>
>> > I'm able to open HTTP requests in the client's browser.
>> > The problem is being the HTTPS requests.
>> > Is there any way for NGINX to receive the traffic and forward it (balanced)
>> > to the proxy servers?
>> > A simpler way. That way I could include the Web Gateway certificate in the
>> > Windows client.
>>
>> If I have understood correctly what you are trying to do, the notes at
>> https://docs.nginx.com/nginx/admin-guide/load-balancer/tcp-udp-load-balancer/
>> look relevant. That expands on what is at
>> http://nginx.org/en/docs/stream/ngx_stream_core_module.html.
>>
>> Cheers,
>>
>>         f
>> --
>> Francis Daly        francis at daoine.org
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>> nginx mailing list -- nginx at nginx.org
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>
>
>
> --
>
>
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