Apache配置介绍

#

ServerRoot  "/etc/httpd"      注释:主工作目录

#

PidFile run/httpd.pid           注释:PID文件目录

#

# Timeout: The number of  seconds before receives and sends time out.

#

Timeout 60           注释:超时时间,定义接收或者发送超时的时间.

#

# KeepAlive: Whether or not  to allow persistent connections (more than

# one request per  connection). Set to "Off" to deactivate.

#

KeepAlive Off  注释:保持连接选项开启或关闭.on或off

#

MaxKeepAliveRequests 100    注释:保持连接时可以最大请求的请求数量.

#

# KeepAliveTimeout: Number  of seconds to wait for the next request from the

# same client on the same  connection.

#

KeepAliveTimeout 15        注释:保持连接的时间,单位是秒,超过这里定义的时间连接断开.建议不要过长2-5秒即可.

##

## 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

# ServerLimit: maximum  value for MaxClients for the lifetime of the server

# MaxClients: maximum  number of server processes allowed to start

# MaxRequestsPerChild:  maximum number of requests a server process serves

<IfModule prefork.c>             注释:prefork的工作模式配置,只有工作在此模式下有效否则无效.

StartServers       8              注释:开启服务时启动的进程数量.

MinSpareServers    5             注释:子进程最小进程空闲数量.如果不够此设置的值父进程将会创建出子进程到这个值的数量.

MaxSpareServers   20              注释:子进程最大空闲的数量,当空闲子进程超过这里设定的值后时候,父进程将回收空闲的子进程

ServerLimit      256              注释:最大的活动进程数量.

MaxClients       256              注释:最大的请求数量,此设置不能超过serverlimit

MaxRequestsPerChild  4000         注释:子进程在工作周期内最大响应的请求数量.如超过此数量后子进程将会被回收.

</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 worker.c>                    注释:worker工作模式配置,工作在此模式有效否则无效.

StartServers         4                  注释:启动服务后创建的进程数量.

MaxClients         300                  注释:最大的并发请求数量

MinSpareThreads     25                  注释:最小空闲线程数量.

MaxSpareThreads     75                  注释:最大空闲线程数量.

ThreadsPerChild     25                  注释:子进程最多生成线程的数量.

MaxRequestsPerChild  0                  注释:子进程最多响应请求的数量,0表示不限定.

</IfModule>

#Listen 12.34.56.78:80

Listen 80                   注释:监听的端口,可以设置多个端口.

# LoadModule foo_module  modules/mod_foo.so             注释:加载的模块,名称和模块路径.如不需要加载可以在前面加#号注释.

#

LoadModule  auth_basic_module modules/mod_auth_basic.so

LoadModule auth_digest_module  modules/mod_auth_digest.so

省略…………

# Load config files from  the config directory "/etc/httpd/conf.d".

#

Include conf.d/*.conf             注释:加载conf文件,开启服务时会加载/etc/httpd/conf.d/下面的所有以.conf结尾的配置文件

User apache                       注释:运行Apache的用户名

Group apache                      注释:运行Apache的组名

<Directory  "">                          注释:访问控制区域定义.

    Options Indexes FollowSymLinks    注释:options 设置: Indexes Includes  FollowSymLinks SymLinksifOwnerMatch ExecCGI MultiViews  None, All

    AllowOverride None                   注释: 是否去找.htacess文件作为配置文件.

    Order allow,deny                    注释:访问控制顺序,先看allow允许访问的列表,再检查deny的列表

    Allow from all                      注释:allow定义是all就是允许所有,可以使用IP地址和网络地址进程控制.

</Directory>

<IfModule mod_userdir.c>    注释:用户目录站点开启与否检查

    UserDir disabled         注释:如果开启,可以通过http://URL//~username/ 的形式来访问系统中每个用户的私人站点

</IfModule>

ErrorLog logs/error_log         注释:错误日志文件存放路径和名称,可自己定义.

LogLevel warn                 注释:错误日志级别

#

LogFormat "%h %l %u %t  \"%r\" %>s %b \"%{Referer}i\"  \"%{User-Agent}i\"" combined

LogFormat "%h %l %u %t  \"%r\" %>s %b" common

LogFormat "%{Referer}i  -> %U" referer

LogFormat  "%{User-agent}i" agent

#CustomLog logs/access_log  common

#

#

CustomLog logs/access_log  combined           注释:访问日志存放路径和文件名称,combined是日志格式. 格式参考logformat

#

Alias /icons/  "/var/www/icons/"               注释:路径别名.访问/icons/的时候实际目录位置为/var/www/icons/.

#

#

DocumentRoot  "/usr/local/apache2/htdocs"      注释:网站文件存放目录.

#

#

DirectoryIndex index.html  index.html.var      注释:默认主页文件,按照从左到右的文件匹配,文件存在且最先匹配的为默认主页.

#

#

AddDefaultCharset UTF-8          注释:默认字符集.

#

#<VirtualHost *:80>            注释:虚拟主机,*为IP地址.80是监听的端口号.其中以下配置和以上提到的配置功能一样.

#    ServerAdmin  webmaster@dummy-host.example.com

#    DocumentRoot  /www/docs/dummy-host.example.com

#    ServerName dummy-host.example.com

#    ErrorLog  logs/dummy-host.example.com-error_log

#    CustomLog  logs/dummy-host.example.com-access_log common

#</VirtualHost>