bandwidth limit for specific server

[Paul]

On 2021-12-22 8:53 p.m., huiming wrote:
> Francis Daly，
> 
>   extremely appreciative of your feedback.
> 
>       Any suggestion for third-party module that does some form of 
> internal bandwidth limiting?

Disclaimer: this is not a specific nginx reply. And it's not 
third-party. You can profile all uses of bandwidth within a linux 
environment using tc (please see 
<https://man7.org/linux/man-pages/man8/tc.8.html>)

Season's greetings to all on list,
Paul
---
Tired old sys-admin.


> 
> thanks
> huiming
> 
> 
> ------------------ Original ------------------
> *From:* "nginx" <francis at daoine.org>;
> *Date:* Thu, Dec 23, 2021 07:47 AM
> *To:* "nginx"<nginx at nginx.org>;
> *Subject:* Re: bandwidth limit for specific server
> 
> On Sat, Dec 18, 2021 at 01:37:11PM +0800, huiming wrote:
> 
> Hi there,
> 
>  >   Is it possible to limit total bandwidth for server?
> 
> Using only stock nginx, I believe the answer is "yes, but not in a way
> that you would want; so effectively no".
> 
> You can limit the number of concurrent (active) connections; you can
> limit the rate of requests that nginx will process; and you can limit
> the response bandwidth for each request.
> 
> By combining those, you can put an upper limit on the response bandwidth;
> but I suspect that it is unlikely to be useful for you.
> 
> 
> 
> You might be happier looking for a third-party module that does some
> form of internal bandwidth limiting; or use something outside of nginx
> to limit the bandwidth.
> 
> The latter would probably be simpler if your chosen server_name was
> the only one this nginx handled; or if the IP address were dedicated to
> this server_name -- in those cases, the external thing would not need to
> know much (or anything?) about what nginx is doing; it could just handle
> "traffic from this process group", or "traffic from this IP address".
> 
>  >   server {
>  >     listen   443 ssl;
>  >     server_name x.x.x.x.x;
>  >
>  >
>  >     is it possible to limit total bandwidth for this server to for 
> example 5M ? not to limit TCP connection bandwidth. need total bandwidth.
> 
> It is using the TCP connection bandwidth limit; but if you were to
> "limit_rate" to 1m and "limit_req" to 5 r/s, then you would not use
> more than 5M (bps) -- but you would probably normally end up using less
> than that; because individual requests would not use 5, while multiple
> requests would probably lead to lots of small failure responses.
> 
> Good luck with it,
> 
> f
> -- 
> Francis Daly        francis at daoine.org
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> 
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> 


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