ich hab die letzten 2 Tage das Problem das bei meinem Apache die MaxClients nach ca. 30sec. erreicht werden. Die Besucherzahl ist nicht sonderlich gestiegen. Leider habe ich was den Apache angeht nur sehr wenig Erfahrung und weis einfach nichtmehr weiter und hoffe hier kann mir jemand die passenden Tipps geben.
Der Server hat 8GB Ram und einen i7 920 Quad-Core, Leistung sollte also ausreichend vorhanden sein. Die Besucherzahlen liegt zur Spitzenzeit bei ca. 4000 - 5000 am tag.
Meine apache conf sieht wie folgt aus (habe hier im Forum schon ein einige Themen durchgelesen und das ein oder andere Versucht, leider führte nichts zu erfolg. Deswegen poste ich meine zuvorige Einstellung und die derzeit Aktive:
Bevor ich etwas geändert habe:
Code: Select all
ServerRoot "/etc/apache2"
#
# The accept serialization lock file MUST BE STORED ON A LOCAL DISK.
#
#<IfModule !mpm_winnt.c>
#<IfModule !mpm_netware.c>
LockFile /var/lock/apache2/accept.lock
#</IfModule>
#</IfModule>
#
# PidFile: The file in which the server should record its process
# identification number when it starts.
# This needs to be set in /etc/apache2/envvars
#
PidFile ${APACHE_PID_FILE}
#
# Timeout: The number of seconds before receives and sends time out.
#
Timeout 300
#
# KeepAlive: Whether or not to allow persistent connections (more than
# one request per connection). Set to "Off" to deactivate.
#
KeepAlive Off
#
# MaxKeepAliveRequests: The maximum number of requests to allow
# during a persistent connection. Set to 0 to allow an unlimited amount.
# We recommend you leave this number high, for maximum performance.
#
MaxKeepAliveRequests 50
#
# KeepAliveTimeout: Number of seconds to wait for the next request from the
# same client on the same connection.
#
KeepAliveTimeout 2
##
## Server-Pool Size Regulation (MPM specific)
##
# prefork MPM
# StartServers: number of server processes to start
# MinSpareServers: minimum number of server processes which are kept spare
# MaxSpareServers: maximum number of server processes which are kept spare
# MaxClients: maximum number of server processes allowed to start
# MaxRequestsPerChild: maximum number of requests a server process serves
<IfModule mpm_prefork_module>
StartServers 100
MinSpareServers 100
MaxSpareServers 100
MaxClients 100
MaxRequestsPerChild 8000
</IfModule>
#<IfModule mpm_itk_module>
# StartServers 100
# MinSpareServers 100
# MaxSpareServers 100
# MaxClients 100
# MaxRequestsPerChild 8000
#</IfModule>
# worker MPM
# StartServers: initial number of server processes to start
# MaxClients: maximum number of simultaneous client connections
# MinSpareThreads: minimum number of worker threads which are kept spare
# MaxSpareThreads: maximum number of worker threads which are kept spare
# ThreadsPerChild: constant number of worker threads in each server process
# MaxRequestsPerChild: maximum number of requests a server process serves
<IfModule mpm_worker_module>
StartServers 50
MinSpareThreads 100
MaxSpareThreads 200
ThreadLimit 300
ThreadsPerChild 50
MaxClients 250
MaxRequestsPerChild 8000
</IfModule>
# event MPM
# StartServers: initial number of server processes to start
# MaxClients: maximum number of simultaneous client connections
# MinSpareThreads: minimum number of worker threads which are kept spare
# MaxSpareThreads: maximum number of worker threads which are kept spare
# ThreadsPerChild: constant number of worker threads in each server process
# MaxRequestsPerChild: maximum number of requests a server process serves
<IfModule mpm_event_module>
StartServers 100
MaxClients 250
MinSpareThreads 100
MaxSpareThreads 200
ThreadLimit 300
ThreadsPerChild 50
MaxRequestsPerChild 50
</IfModule>
# These need to be set in /etc/apache2/envvars
User ${APACHE_RUN_USER}
Group ${APACHE_RUN_GROUP}
#
# AccessFileName: The name of the file to look for in each directory
# for additional configuration directives. See also the AllowOverride
# directive.
#
AccessFileName .htaccess
#
# The following lines prevent .htaccess and .htpasswd files from being
# viewed by Web clients.
#
<Files ~ "^\.ht">
Order allow,deny
Deny from all
</Files>
#
# DefaultType is the default MIME type the server will use for a document
# if it cannot otherwise determine one, such as from filename extensions.
# If your server contains mostly text or HTML documents, "text/plain" is
# a good value. If most of your content is binary, such as applications
# or images, you may want to use "application/octet-stream" instead to
# keep browsers from trying to display binary files as though they are
# text.
#
DefaultType text/plain
#
# HostnameLookups: Log the names of clients or just their IP addresses
# e.g., www.apache.org (on) or 204.62.129.132 (off).
# The default is off because it'd be overall better for the net if people
# had to knowingly turn this feature on, since enabling it means that
# each client request will result in AT LEAST one lookup request to the
# nameserver.
#
HostnameLookups Off
# ErrorLog: The location of the error log file.
# If you do not specify an ErrorLog directive within a <VirtualHost>
# container, error messages relating to that virtual host will be
# logged here. If you *do* define an error logfile for a <VirtualHost>
# container, that host's errors will be logged there and not here.
#
ErrorLog /var/log/apache2/error.log
#
# LogLevel: Control the number of messages logged to the error_log.
# Possible values include: debug, info, notice, warn, error, crit,
# alert, emerg.
#
LogLevel warn
# Include module configuration:
Include /etc/apache2/mods-enabled/*.load
Include /etc/apache2/mods-enabled/*.conf
# Include all the user configurations:
Include /etc/apache2/httpd.conf
# Include ports listing
Include /etc/apache2/ports.conf
#
# The following directives define some format nicknames for use with
# a CustomLog directive (see below).
# If you are behind a reverse proxy, you might want to change %h into %{X-Forwarded-For}i
#
LogFormat "%v:%p %h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" vhost_combined
LogFormat "%h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" combined
LogFormat "%h %l %u %t \"%r\" %>s %O" common
LogFormat "%{Referer}i -> %U" referer
LogFormat "%{User-agent}i" agent
#
# Define an access log for VirtualHosts that don't define their own logfile
CustomLog /var/log/apache2/other_vhosts_access.log vhost_combined
# Include of directories ignores editors' and dpkg's backup files,
# see README.Debian for details.
# Include generic snippets of statements
Include /etc/apache2/conf.d/
# Include the virtual host configurations:
Include /etc/apache2/sites-enabled/
Bei der derzeitig aktivierten Version habe ich das prefork modul auf folgendes geändert:
Code: Select all
ServerLimit 750
StartServers 50
MinSpareServers 50
MaxSpareServers 250
MaxClients 750
MaxRequestsPerChild 5000
Mit dieser Konfiguration kommt die MaxClients Fehlermeldung erst nach ca. 10min..
Ich habe leider auch keine Ahnung wie ich den Apache abfrage was sein derzeitiger Status ist und wie viele anfragen er gerade abarbeiten muss etc..
Edit: laut IPTraf sind über 80.000 TCP Connections offen, ist das normal? Diese steigen auch rasant an...
Grüße
Steffen
