Ghostetr
Reputation: 35
apache2 keeps crashing 1- 3 times a day
i'm running a debian server with apache 2.4, and php 7.* 1 - 3 times a day my website goes down and i have to restart apache to get it up again.
i'm rather new to linux so i dont realy know how to debug apache :/
any advise is strongly appriciated!
Server stats:
ram: 32 Gb ram
hd: 2x 256Gb ssh 600/600Mb
2 cpu with 6 cores i dont remember the stats of the cpus
apache status before crash:
● apache2.service - LSB: Apache2 web server
Loaded: loaded (/etc/init.d/apache2)
Active: active (running) since Thu 2016-05-12 16:31:45 CEST; 2s ago
Process: 1540 ExecStop=/etc/init.d/apache2 stop (code=exited, status=0/SUCCESS)
Process: 27533 ExecReload=/etc/init.d/apache2 reload (code=exited, status=0/SUCCESS)
Process: 1566 ExecStart=/etc/init.d/apache2 start (code=exited, status=0/SUCCESS)
CGroup: /system.slice/apache2.service
├─1581 /usr/sbin/apache2 -k start
├─1584 /usr/sbin/apache2 -k start
├─1585 /usr/sbin/apache2 -k start
├─1586 /usr/sbin/apache2 -k start
├─1587 /usr/sbin/apache2 -k start
└─1588 /usr/sbin/apache2 -k start
May 12 16:31:45 something.com apache2[1566]: Starting web server: apac...
May 12 16:31:45 something.com systemd[1]: Started LSB: Apache2 web se....
Hint: Some lines were ellipsized, use -l to show in full.
apache status after crash:
apache2.service - LSB: Apache2 web server
Loaded: loaded (/etc/init.d/apache2)
Active: active (running) since Wed 2016-05-11 13:06:04 CEST; 1 day 3h ago
Process: 16209 ExecStop=/etc/init.d/apache2 stop (code=exited, status=0/SUCCESS)
Process: 27533 ExecReload=/etc/init.d/apache2 reload (code=exited, status=0/SUCCESS)
Process: 16234 ExecStart=/etc/init.d/apache2 start (code=exited, status=0/SUCCESS)
CGroup: /system.slice/apache2.service
├─16249 /usr/sbin/apache2 -k start
├─16268 /usr/sbin/apache2 -k start
├─16290 /usr/sbin/apache2 -k start
├─16299 /usr/sbin/apache2 -k start
├─16382 /usr/sbin/apache2 -k start
├─16385 /usr/sbin/apache2 -k start
├─16388 /usr/sbin/apache2 -k start
├─16437 /usr/sbin/apache2 -k start
├─16513 /usr/sbin/apache2 -k start
├─16660 /usr/sbin/apache2 -k start
├─16930 /usr/sbin/apache2 -k start
├─16934 /usr/sbin/apache2 -k start
├─16946 /usr/sbin/apache2 -k start
├─16976 /usr/sbin/apache2 -k start
├─16983 /usr/sbin/apache2 -k start
├─16989 /usr/sbin/apache2 -k start
├─16991 /usr/sbin/apache2 -k start
├─17171 /usr/sbin/apache2 -k start
├─17190 /usr/sbin/apache2 -k start
├─17270 /usr/sbin/apache2 -k start
├─17319 /usr/sbin/apache2 -k start
├─17320 /usr/sbin/apache2 -k start
├─17377 /usr/sbin/apache2 -k start
├─17383 /usr/sbin/apache2 -k start
├─17387 /usr/sbin/apache2 -k start
├─17407 /usr/sbin/apache2 -k start
├─17412 /usr/sbin/apache2 -k start
├─17722 /usr/sbin/apache2 -k start
├─17750 /usr/sbin/apache2 -k start
├─17753 /usr/sbin/apache2 -k start
├─17756 /usr/sbin/apache2 -k start
├─17757 /usr/sbin/apache2 -k start
├─17836 /usr/sbin/apache2 -k start
├─17858 /usr/sbin/apache2 -k start
├─17873 /usr/sbin/apache2 -k start
├─17883 /usr/sbin/apache2 -k start
├─17885 /usr/sbin/apache2 -k start
├─17937 /usr/sbin/apache2 -k start
├─17938 /usr/sbin/apache2 -k start
├─17945 /usr/sbin/apache2 -k start
├─17949 /usr/sbin/apache2 -k start
├─17953 /usr/sbin/apache2 -k start
├─18006 /usr/sbin/apache2 -k start
├─18015 /usr/sbin/apache2 -k start
├─18080 /usr/sbin/apache2 -k start
├─18092 /usr/sbin/apache2 -k start
├─18097 /usr/sbin/apache2 -k start
├─18154 /usr/sbin/apache2 -k start
├─18223 /usr/sbin/apache2 -k start
├─18224 /usr/sbin/apache2 -k start
├─18226 /usr/sbin/apache2 -k start
├─18239 /usr/sbin/apache2 -k start
├─18342 /usr/sbin/apache2 -k start
├─18347 /usr/sbin/apache2 -k start
├─18348 /usr/sbin/apache2 -k start
├─18353 /usr/sbin/apache2 -k start
├─18364 /usr/sbin/apache2 -k start
├─18399 /usr/sbin/apache2 -k start
├─18403 /usr/sbin/apache2 -k start
├─18404 /usr/sbin/apache2 -k start
├─18419 /usr/sbin/apache2 -k start
├─18451 /usr/sbin/apache2 -k start
├─18526 /usr/sbin/apache2 -k start
├─18531 /usr/sbin/apache2 -k start
├─18583 /usr/sbin/apache2 -k start
├─18603 /usr/sbin/apache2 -k start
├─18628 /usr/sbin/apache2 -k start
├─18647 /usr/sbin/apache2 -k start
├─18697 /usr/sbin/apache2 -k start
├─18699 /usr/sbin/apache2 -k start
├─18706 /usr/sbin/apache2 -k start
├─18714 /usr/sbin/apache2 -k start
├─18731 /usr/sbin/apache2 -k start
├─18732 /usr/sbin/apache2 -k start
├─18736 /usr/sbin/apache2 -k start
├─18737 /usr/sbin/apache2 -k start
├─18754 /usr/sbin/apache2 -k start
├─18791 /usr/sbin/apache2 -k start
├─18804 /usr/sbin/apache2 -k start
├─18811 /usr/sbin/apache2 -k start
├─18812 /usr/sbin/apache2 -k start
├─18818 /usr/sbin/apache2 -k start
├─18819 /usr/sbin/apache2 -k start
├─18822 /usr/sbin/apache2 -k start
├─18832 /usr/sbin/apache2 -k start
├─18844 /usr/sbin/apache2 -k start
├─18845 /usr/sbin/apache2 -k start
├─18846 /usr/sbin/apache2 -k start
├─18852 /usr/sbin/apache2 -k start
├─18856 /usr/sbin/apache2 -k start
├─18919 /usr/sbin/apache2 -k start
├─18927 /usr/sbin/apache2 -k start
├─18934 /usr/sbin/apache2 -k start
├─18940 /usr/sbin/apache2 -k start
├─18956 /usr/sbin/apache2 -k start
├─18962 /usr/sbin/apache2 -k start
├─18967 /usr/sbin/apache2 -k start
├─18968 /usr/sbin/apache2 -k start
├─18973 /usr/sbin/apache2 -k start
├─18977 /usr/sbin/apache2 -k start
├─18983 /usr/sbin/apache2 -k start
├─19022 /usr/sbin/apache2 -k start
├─19076 /usr/sbin/apache2 -k start
├─19083 /usr/sbin/apache2 -k start
├─19095 /usr/sbin/apache2 -k start
├─19096 /usr/sbin/apache2 -k start
├─19107 /usr/sbin/apache2 -k start
├─19114 /usr/sbin/apache2 -k start
├─19116 /usr/sbin/apache2 -k start
├─19125 /usr/sbin/apache2 -k start
├─19126 /usr/sbin/apache2 -k start
├─19128 /usr/sbin/apache2 -k start
├─19130 /usr/sbin/apache2 -k start
├─19131 /usr/sbin/apache2 -k start
├─19139 /usr/sbin/apache2 -k start
├─19141 /usr/sbin/apache2 -k start
├─19143 /usr/sbin/apache2 -k start
├─19154 /usr/sbin/apache2 -k start
├─19158 /usr/sbin/apache2 -k start
├─19161 /usr/sbin/apache2 -k start
├─19166 /usr/sbin/apache2 -k start
├─19167 /usr/sbin/apache2 -k start
├─19168 /usr/sbin/apache2 -k start
├─19169 /usr/sbin/apache2 -k start
├─19171 /usr/sbin/apache2 -k start
├─19203 /usr/sbin/apache2 -k start
├─19204 /usr/sbin/apache2 -k start
├─19220 /usr/sbin/apache2 -k start
├─19222 /usr/sbin/apache2 -k start
├─19223 /usr/sbin/apache2 -k start
├─19225 /usr/sbin/apache2 -k start
├─19226 /usr/sbin/apache2 -k start
├─19227 /usr/sbin/apache2 -k start
├─19228 /usr/sbin/apache2 -k start
├─19232 /usr/sbin/apache2 -k start
├─19235 /usr/sbin/apache2 -k start
├─19236 /usr/sbin/apache2 -k start
├─19237 /usr/sbin/apache2 -k start
├─19238 /usr/sbin/apache2 -k start
├─19241 /usr/sbin/apache2 -k start
├─19243 /usr/sbin/apache2 -k start
├─19249 /usr/sbin/apache2 -k start
├─19252 /usr/sbin/apache2 -k start
├─19253 /usr/sbin/apache2 -k start
├─19255 /usr/sbin/apache2 -k start
├─19256 /usr/sbin/apache2 -k start
├─19268 /usr/sbin/apache2 -k start
├─19270 /usr/sbin/apache2 -k start
├─19276 /usr/sbin/apache2 -k start
├─19281 /usr/sbin/apache2 -k start
└─19285 /usr/sbin/apache2 -k start
May 11 13:06:04 something.com apache2[16234]: Starting web server: apa...
May 11 13:06:04 something.com systemd[1]: Started LSB: Apache2 web se....
May 12 06:52:37 something.com systemd[1]: Reloading LSB: Apache2 web ....
May 12 06:52:38 something.com apache2[27533]: Reloading web server: ap...
May 12 06:52:38 something.com systemd[1]: Reloaded LSB: Apache2 web s....
Hint: Some lines were ellipsized, use -l to show in full.
apache2 error log:
[Thu May 12 06:52:38.198334 2016] [ssl:warn] [pid 16249] AH01906: something.com:443:0 server certificate is a CA certificate (BasicConstraints: CA == TRUE !?)
[Thu May 12 06:52:38.198457 2016] [mpm_prefork:notice] [pid 16249] AH00163: Apache/2.4.10 (Debian) OpenSSL/1.0.1k configured -- resuming normal operations
[Thu May 12 06:52:38.198462 2016] [core:notice] [pid 16249] AH00094: Command line: '/usr/sbin/apache2'
[Thu May 12 16:31:43.877771 2016] [mpm_prefork:notice] [pid 16249] AH00169: caught SIGTERM, shutting down
[Thu May 12 16:31:44.905366 2016] [ssl:warn] [pid 1580] AH01906: something.com:443:0 server certificate is a CA certificate (BasicConstraints: CA == TRUE !?)
[Thu May 12 16:31:44.925525 2016] [ssl:warn] [pid 1581] AH01906: something.com:443:0 server certificate is a CA certificate (BasicConstraints: CA == TRUE !?)
[Thu May 12 16:31:44.926946 2016] [mpm_prefork:notice] [pid 1581] AH00163: Apache/2.4.10 (Debian) OpenSSL/1.0.1k configured -- resuming normal operations
[Thu May 12 16:31:44.926959 2016] [core:notice] [pid 1581] AH00094: Command line: '/usr/sbin/apache2'
Site configuration:
<VirtualHost *:80>
ServerAdmin [email protected]
ServerName something.com
ServerAlias www.something.com
# Indexes + Directory Root.
DocumentRoot /var/www/sitename/public_html/
<Directory /var/www/sitename/public_html/>
DirectoryIndex index.php
Options indexes FollowSymLinks
AllowOverride all
Require all granted
</Directory>
# Logfiles
ErrorLog /home/Glausten/website/sitename/logs/sitename_error_logs.log
CustomLog /home/Glausten/website/sitename/logs/sitename_access_logs.log common
</VirtualHost>
#<VirtualHost *:80>
# ServerAdmin webmaster@localhost
# ServerName something.com
# DocumentRoot /var/www/sitename/public_html/
#
#</VirtualHost>
#
#
#<IfModule mod_ssl.c>
#<VirtualHost *:443>
#
# ServerAdmin [email protected]
# ServerName something.com
# DocumentRoot /var/www/sitename/public_html/
#
# SSL Engine Switch:
# Enable/Disable SSL for this virtual host.
# SSLEngine on
# A self-signed (snakeoil) certificate can be created by installing
# the ssl-cert package. See
# /usr/share/doc/apache2.2-common/README.Debian.gz for more info.
# If both key and certificate are stored in the same file, only the
# SSLCertificateFile directive is needed.
# SSLCertificateFile /etc/apache2/ssl/apache.crt
# SSLCertificateKeyFile /etc/apache2/ssl/apache.key
#</VirtualHost>
#</IfModule>
Is there anything else i can post to help locate the problem?
====================!=!=!=====================
i just might have located the problem
noticed a new error in the error log saying :
server reached MaxRequestWorkers setting
then i started googleing and wounded up on this site:
http://cloudinservice.com/tune-apache-performance-using-mpm-prefork-module/ that gave me some insigt in whats happening in the mpm-prefork-module
then i noticed that MaxConnectionsPerChild where set to 0 meaning if i have some php scripts with a little memory leak that wil continue to grow and eat up more off the memory without releasing any over time which explains why the server suddenly goes down i've modified the file according to my resources and restarted apache.
i'll see how it goes for the next few days and if it dossent crash i'll return and post this as the answer.
Upvotes: 1
Views: 705
Answers (2)
Osin
Reputation: 485
Okay, so depending on your hardware configuration it could be because you use a tiny server. Digital ocean suggest to create for tiny machine a config file for apache which allow 15 child process (by supposing apache use 10M for each child process). You can edit or create /etc/apache2/apache2.conf
<IfModule mpm_prefork_module>
StartServers 3
MinSpareServers 3
MaxSpareServers 5
MaxClients 30
MaxRequestsPerChild 0
</IfModule>
Taken from DigitalOcean
This configuration is good enough for an apache child process using 10 M and a server having 512M ram
Upvotes: 0
Osin
Reputation: 485
It's seems that you have to configure apache depending on your server configuration. I had same problem with digital ocean and his tiny droplet. The best way is to limit concurent connections. But if you can provide more info about logs, machine configuration you should get a better answer
Upvotes: 1
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