Config apache for high traffic

[benash]

hello,

I use Wordpress site on VPS with maxcdn and my apache (httpd) is falling few times a day when the site got more than 800 users active (according to google analytics).

My Hosting guys dont know what to do so I am asking you guys, what should I do to optimize my apache and Mysql to get the best settings?

httpd fail log:

The service “httpd” appears to be down.

Server

vps------.com

Primary IP Address

198.---.--.--

Service Name

httpd

Service Status

failed ⛔

Notification

The service “httpd” appears to be down.

Service Check Method

The system failed to connect to this service’s TCP/IP port.

Reason

Timeout while trying to connect to service: Died

Number of Restart Attempts

2

Startup Log

No startup log

Log Messages

[Fri Nov 04 05:07:26.918324 2016] [mpm_worker:notice] [pid 17100:tid 139943561709536] AH00292: Apache/2.4.23 (cPanel) OpenSSL/1.0.1e-fips mod_bwlimited/1.4 configured -- resuming normal operations
[Fri Nov 04 05:04:27.755411 2016] [mpm_worker:notice] [pid 17100:tid 139943561709536] AH00292: Apache/2.4.23 (cPanel) OpenSSL/1.0.1e-fips mod_bwlimited/1.4 configured -- resuming normal operations

Memory Information

Used

4.54 GB

Available

2.39 GB

Installed

3 GB

Load Information

1.22 1.50 2.09

Uptime

1 day, 2 hours, 42 minutes, and 41 seconds

IOStat Information

avg-cpu: %user %nice %system %iowait %steal %idle 5.65 0.01 0.68 0.02 0.00 93.64 Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn

Top Processes

PID

Owner

CPU %

Memory %

Command

30080

galis7

21.23

2.11

/opt/cpanel/ea-php55/root/usr/bin/php-cgi

30079

galis7

20.56

2.06

/opt/cpanel/ea-php55/root/usr/bin/php-cgi

30088

root

8.48

0.70

/usr/local/cpanel/3rdparty/bin/perl /usr/local/cpanel/bin/leechprotect

29769

nobody

5.97

0.37

/usr/sbin/httpd -k start

28988

nobody

5.63

0.42

/usr/sbin/httpd -k start

The chkservd process attempts to connect to “127.0.0.1:80” in order to validate that this service is functioning. If you blocked connections with iptables or the “Host Access Control” interface in WHM, this failure may be a false positive.

To resolve this issue, either open the firewall to allow connections as the root user to “127.0.0.1:80” or disable checks for this service in WHM’s “Service Manager” interface with the “Configure Monitor Settings” link below.

thanks alot!!

 

[SysSachin]

First of all let me know your VPS configuration and how many sites you have hosted on that VPS ?

Might be there are high load on your server and that is the main reason of this issues. If there is high load on your server then following post will be helpful for you

Troubleshooting high server loads on Linux servers

 

[benash]

Hi,

i have 5 sites on the VPS but just one of them is active (4 of them got max 1-5 users a day) and this is the one i got problem with the high traffic.

do you have any idea for configuration?

 

[benash]

crashing again and again
last error log:

httpd

Service Status

failed 

Notification

The service “httpd” appears to be down.

Service Check Method

The system failed to connect to this service’s TCP/IP port.

Reason

Timeout while trying to connect to service: Died

Number of Restart Attempts

5

Startup Log

No startup log

Memory Information

Used

4.63 GB

Available

2.54 GB

Installed

3 GB

Load Information

3.39 2.09 1.87

Uptime

1 day, 5 hours, 34 minutes, and 58 seconds

IOStat Information

avg-cpu: %user %nice %system %iowait %steal %idle 5.37 0.01 0.66 0.02 0.00 93.94 Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn

Top Processes

PID

Owner

CPU %

Memory %

Command

32396

root

8.74

0.70

/usr/local/cpanel/3rdparty/bin/perl /usr/local/cpanel/bin/leechprotect

32324

nobody

6.28

0.27

/usr/sbin/httpd -k start

31974

nobody

6.16

0.29

/usr/sbin/httpd -k start

31903

nobody

5.54

0.29

/usr/sbin/httpd -k start

32283

nobody

5.05

0.27

/usr/sbin/httpd -k start

The chkservd process attempts to connect to “127.0.0.1:80” in order to validate that this service is functioning. If you blocked connections with iptables or the “Host Access Control” interface in WHM, this failure may be a false positive.

To resolve this issue, either open the firewall to allow connections as the root user to “127.0.0.1:80” or disable checks for this service in WHM’s “Service Manager” interface with the “Configure Monitor Settings” link below.

 

[cPanelMichael]

Hello,

Do you notice any additional error messages in /usr/local/apache/logs/error_log at the times Apache fails?

Thank you.

 

[danielpmc]

Hello benash,

Do you have WHM/Configserver Firewall installed? If yes you can look through the following logs to see if you can find any issues. Take a look for any unusually large blocks of activity from individual IPs within these logs. Analyze what that IP is doing and the frequency of its activity. If its hitting a same page over and over it could be a hacker or someone trying to DDOS or DOS your domain. Or maybe a broken page on your site could be creating a loop in your system. If it is only hitting your Registration or Login pages then you may consider banning the IP. Somehow somebody is creating a bottleneck in your system and one or more of the logs listed below should offer you some insight.

whm/configserver explorer/usr/local/apache/logs/access_logs

whm/configserver explorer/usr/local/apache/logs/error_logs

whm/configserver explorer/var/log/exim_mainlog

whm/configserver explorer/var/log/exim_paniclog

whm/configserver explorer/var/log/exim_rejectlog

whm/configserver explorer/var/log/lfd.log

whm/configserver explorer/var/log/messages

whm/configserver explorer/var/log/secure

 

[SpaceCowboy]

Wow 800 users on a VPS! i thought you needed at least a dedicated server for that kind of traffic, specially on wordpress site which isn't exactly optimized specially when you add fancy themes and plugins.