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--- max_clients [2015/04/02 06:35] – luke7858
+++ max_clients [2024/05/23 07:26] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+**Quick note**: apache 2.4 - Max Clients is now named MaxRequestWorkers
+\\
+You can find the apache values in:
+\\
+/etc/httpd/conf/httpd.conf
+\\
+OR
+\\
+/etc/httpd/conf.modules.d/00-mpm.conf
+\\
+If no value has been set then chances are the default of 256 is set.  (Tip: run apache2buddy to find out the value if you are having trouble working it out)
+\\
+=== CentOS ===
+Best command to find the current apache processes is:
+<sxh bash>
+pstree | grep httpd
+</sxh>
+Alternative:
+<sxh bash>
+ps afx | grep httpd | wc
+</sxh>
+\\
+\\
+What is the number of max connection the server has been configured for?
+<sxh bash>
+grep -i maxclients /etc/httpd/conf/httpd.conf
+</sxh>
+\\
+\\
+When did apache hit max clients?
+==Centos==
+<sxh bash>
+grep -i maxclients /var/log/httpd/error_log
+</sxh>
+Has it happened before? zgrep checks through ALL of the compresses and uncompressed logs, the * at the end of error represents all of the logrotated files:
+<sxh bash>
+zgrep -i maxclients /var/log/httpd/error_log*
+</sxh>
+What are the currently configured max connections?
+<sxh bash>
+grep -i maxc /etc/httpd/conf/httpd.conf | head -3
+</sxh>
+Ubuntu could have max clients configured in a number of different places, first place to look is:
+<sxh bash>
+grep -i maxc /etc/apache2/apache2.conf | head -4
+</sxh>
+or
+<sxh bash>
+grep -i maxc /etc/apache2/mods-enabled/mpm_prefork.conf
+</sxh>
+Current connections:
+<sxh bash>
+pstree | grep httpd
+</sxh>
+\\
+== Ubuntu ==
+<sxh bash>
+grep -i maxclients /var/log/apache2/error_log
+</sxh>
+Has it happened before?
+<sxh bash>
+zgrep -i maxclients /var/log/apache2/error_log*
+</sxh>
+Current connections:
+<sxh bash>
+pstree | grep apache
+</sxh>
+\\
+\\
 ==== CentOS====