httpd-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Hajo Locke <Hajo.Lo...@gmx.de>
Subject Re: [users@httpd] high count h2 idle streams
Date Mon, 09 Oct 2017 11:40:30 GMT
Hello,


Am 09.10.2017 um 12:33 schrieb Hajo Locke:
> Hello List,
>
> found today an abnormality in my apachestatus for some servers.
> There are a lot of "h2  idle, streams" in apachestatus. This looks 
> like this:
>
> 14-0 28241 0/41/41 K  0.25 128 1 0.0 0.10 0.10  ip.ip.ip.ip h2 idle, 
> streams: 0/0/0/0/0 (open/recv/resp/push/rst)
> 15-0 28242 0/11/11 K  0.25 120 1 0.0 0.61 0.61  ip.ip.ip.ip h2 idle, 
> streams: 0/0/0/0/0 (open/recv/resp/push/rst)
> 16-0 28243 0/15/15 K  0.22 8 1 0.0 0.39 0.39  ip.ip.ip.ip h2 idle, 
> streams: 0/0/0/0/0 (open/recv/resp/push/rst)
> 17-0 28245 0/25/25 K  0.40 278 1 0.0 1.13 1.13  ip.ip.ip.ip h2 idle, 
> streams: 0/0/0/0/0 (open/recv/resp/push/rst)
> 18-0 28246 0/46/46 K  0.52 35 54 0.0 1.53 1.53  ip.ip.ip.ip h2 idle, 
> streams: 0/0/0/0/0 (open/recv/resp/push/rst)
> 19-0 28250 0/7/7 K  0.12 58 0 0.0 0.02 0.02  ip.ip.ip.ip h2  idle, 
> streams: 0/0/0/0/0 (open/recv/resp/push/rst)
> 20-0 28277 0/3/3 K  0.24 243 66 0.0 0.23 0.23  ip.ip.ip.ip h2 idle, 
> streams: 0/0/0/0/0 (open/recv/resp/push/rst)
> 21-0 28278 0/8/8 K  0.15 102 1 0.0 0.29 0.29  ip.ip.ip.ip h2 idle, 
> streams: 0/0/0/0/0 (open/recv/resp/push/rst)
> 22-0 28280 0/5/5 K  0.12 18 1 0.0 0.31 0.31  ip.ip.ip.ip h2  idle, 
> streams: 0/0/0/0/0 (open/recv/resp/push/rst)
>
> Some servers have hundreds of this, never noticed this before.
> This connections have status K or W. Ist this a kind of attack to 
> reach MaxRequestWorkers?
> It seems the number of this connections can be reduced by reducing 
> H2MaxWorkerIdleSeconds to a lower value.
> Apacheversion is 2.4.27.
> What should i do now?
it seems that i found problem. it looks like standard-dos with 
slowloris. i think i just was confused by mod_http2 output. deactivating 
http2 just shows same problem with http1.1
mod_qos is a really good helper for this kind of problems.
>
> Thanks,
> Hajo
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> For additional commands, e-mail: users-help@httpd.apache.org
>
>


---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
For additional commands, e-mail: users-help@httpd.apache.org


Mime
View raw message