[users@httpd] Re: mod_echo configuration

2019-03-28 Thread Marion & Christophe JAILLET
Le 28/03/2019 à 15:37, anthony a écrit : Hello, I am new on this mailing list and I hope to find an answer on my apache2 configuration problem. My OS : Linux openSUSE 15.2 64 bit Apache : apache2 2.4.33 standard install    browser url : local host --> It works! I try to use apache as a echo

Re: [users@httpd] Re: Apache web server devouring resources

2019-03-28 Thread Darryl Philip Baker
Thank you for your response but if this was an ongoing issue, I would have more places to look and tools available. After rebooting the system, it just went back to normal. The network team reviewed the load balancer and firewall logs. I have reviewed the Apache log and system messages. We are r

Re: [users@httpd] Re: Apache web server devouring resources

2019-03-28 Thread Darryl Philip Baker
It does strike me odd if there were continued request why didn’t pick right back up after the reboot. The reboot would take less than 3 minutes. Also a connection attaching to the load balancer, the servers are not directly addressable, would have been routed to one of the other servers while Ap

RE: [users@httpd] Re: Apache web server devouring resources

2019-03-28 Thread Muggeridge, Matt
You will need to do some more triaging. Suggestions for things to investigate more deeply: http Log files, system log files, system performance monitoring, connection statistics, source of traffic, TCP performance tuning, firewall control, protection against DOS attacks... and that's just off

Re: [users@httpd] Re: Apache web server devouring resources

2019-03-28 Thread Rose, John B
I don't think the TCP buffer would be clear if there was a continuing flow of http requests during that time, whether the web server software was down, or maxed out But maybe I am wrong. From: Darryl Philip Baker Sent: Thursday, March 28, 2019 1:22:59 PM To:

Re: [users@httpd] Does Apache do a "graceful" automatically over time?

2019-03-28 Thread Eric Covener
> There is a possibility. If you are using MPM and have set a non-zero > value for MaxConnectionsPerChild, this can happen. Once > MaxConnectionsPerChild limit is reached, that child server will be > terminated and a new one will be started. Do you have that in your > config? If there's a replacem

Re: [users@httpd] Re: Apache web server devouring resources

2019-03-28 Thread Darryl Philip Baker
Here you go: mpm_worker MinSpareThreads 40 ThreadsPerChild 25 StartServers 10 ServerLimit 250 MaxConnectionsPerChild 0 MaxRequestWorkers 6000 MaxSpareThreads 6000 Darryl Baker (he/him/his) Sr. System Administrator Distributed Application Platform Services Northwestern University 1800 Sherman Ave.

Re: [users@httpd] Re: Apache web server devouring resources

2019-03-28 Thread Darryl Philip Baker
No PHP on the system at all. The web server was down for 15-20 minutes so anything in the queue should have cleared, right? Darryl Baker (he/him/his) Sr. System Administrator Distributed Application Platform Services Northwestern University 1800 Sherman Ave. Suite 6-600 – Box #39 Evanston, IL 6

Re: [users@httpd] Re: Apache web server devouring resources

2019-03-28 Thread Daniel Ferradal
Have you tried mod_status? That would clearly tell you which threads eat resources for you. You can share the mpm you are using ,the values you have configured for then, also the list of modules you load, and the actual load you receive. That alone can give great hints about a likely culprit. E

Re: [users@httpd] Apache web server devouring resources

2019-03-28 Thread Jim Albert
On 3/28/2019 12:11 PM, Darryl Philip Baker wrote: Gentlefolk, I had an incident yesterday where the Apache web server host had a load average of over 170 and was performing very slowly. Stopping the web server did fix the issue but when I restarted the daemons the load started to increase ve

[users@httpd] Re: Apache web server devouring resources

2019-03-28 Thread Rose, John B
Regarding the "load increasing quickly after restarting the daemons" ... I do not believe just restarting the daemons clears the TCP queue. Nor does it prevent new TCP requests. If it is an attack, then the load would ramp back up immediately. That is why you have to reboot I am guessing. Do

[users@httpd] Apache web server devouring resources

2019-03-28 Thread Darryl Philip Baker
Gentlefolk, I had an incident yesterday where the Apache web server host had a load average of over 170 and was performing very slowly. Stopping the web server did fix the issue but when I restarted the daemons the load started to increase very quickly. I ended up having to reboot the system to

Re: [users@httpd] Does Apache do a "graceful" automatically over time?

2019-03-28 Thread Suvendu Sekhar Mondal
John, On Thu, Mar 28, 2019 at 1:23 AM Rose, John B wrote: > > As always, a "thank you" to everyone that works on Apache. > > > Some background and resultant question ... > > > We had made some changes in the afternoon to some virtual host configs that > we intended to implement the next morning

[users@httpd] mod_echo configuration

2019-03-28 Thread anthony
Hello, I am new on this mailing list and I hope to find an answer on my apache2 configuration problem. My OS : Linux openSUSE 15.2 64 bit Apache : apache2 2.4.33 standard install    browser url : local host --> It works! I try to use apache as a echo server for telnet. reading https://httpd.