httpd,服务                                                                                       
    网站访问基本流程:                                                                                  
                    有则返回                LDNS            网站                                     
        用户----->本地的缓存/host文件---->local dns------->web sit                                      
        |<===========|                        |                 |                              
        |<====================================|                 |                              
        |<======================================================|                              
                                                                                               
lamp系列 http服务                                                                                  
服务排行                                                                                           
    apache  老大哥,安全稳定web服务器                                                                     
    mcrosoft-iis                                                                               
    nginx   新型主流的web服务器,适合静态网页                                                                 
    tomcat  java容器                                                                             
    resin                                                                                      
                                                                                               
Apache,主流的,安全稳定的web服务端软件                                                                       
查看网站是否正常:                                                                                      
        curl -I -s IPaddr   //返回(状态码) ok 则正常                                                   
                                                                                               
------------------------------------------------------------------------                       
隐藏Apache版本号的方法是修改Apache的配置文件,如RedHat系的Linux默认是:                                                
vim /etc/httpd/conf/httpd.conf                                                                 
分别搜索关键字ServerTokens和ServerSignature,修改:                                                        
    ServerTokens OS 修改为 ServerTokens ProductOnly                                               
    ServerSignature On 修改为 ServerSignature Off                                                 
                                                                                               
重启或重新加载Apache就可以了。                                                                             
apachectl restart                                                                              
测试一下,如下:                                                                                       
    [root@localhost ~]# curl -I 192.168.80.128:88                                              
    HTTP/1.1 403 Forbidden                                                                     
    Date: Wed, 21 Jul 2010 13:23:22 GMT                                                        
    Server: Apache                                                                             
    Accept-Ranges: bytes                                                                       
    Content-Length: 5043                                                                       
    Connection: close                                                                          
    Content-Type: text/html; charset=UTF-8                                                     
版本号与操作系统信息已经隐藏了。                                                                               
--------------------------------------------------------------------                           
如果是编译安装的,还可以用修改源码编译的方法:                                                                        
进入Apache的源码目录下的include目录,然后编辑ap_release.h这个文件,你会看到有如下变量:                                       
    #define AP_SERVER_BASEVENDOR “Apache Software Foundation”                                  
    #define AP_SERVER_BASEPROJECT “Apache HTTP Server”                                         
    #define AP_SERVER_BASEPRODUCT “Apache”                                                     
    #define AP_SERVER_MAJORVERSION_NUMBER 2                                                    
    #define AP_SERVER_MINORVERSION_NUMBER 2                                                    
    #define AP_SERVER_PATCHLEVEL_NUMBER 15                                                     
    #define AP_SERVER_DEVBUILD_BOOLEAN 0                                                       
可以根据自己喜好,修改或隐藏版本号与名字。                                                                          
                                                                                               
                                                                                               
                                                                                               
*********************************************************                                      
下载-->安装-->配置                                                                                   
                                                                                               
先卸载自带的apache,                                                                                  
rpm -e --nodeps http* ,不检查依赖关系卸载                                                               
rpm -aq http    //查看卸载干净了没有                                                                    
                                                                                               
www.apache.org ---->httpd---->httpd.tar                                                        
tar xf httpd.tar                                                                               
cd httpd                                                                                       
./configure -help //path                                                                       
#############################################################                                  
./configure --prefix=/ser_app/apache2 \                                                        
--enable-deflate \                                                                             
--enable-expires \                                                                             
--enable-headers \                                                                             
--enable-modules=most \                                                                        
--enable-so \                                                                                  
--with-mpm=worker \                                                                            
--enable-rewrite                                                                               
##########################################################                                     
                                                                                               
make -j4                                                                                       
make install                                                                                   
                                                                                               
ln -s /application/apache2.2.2 /application/apache                                             
ls -l /application/apache                                                                      
                                                                                               
查看安装情况                                                                                         
/application/apache/bin/apachectl -l                                                           
/application/apache/bin/apachectl -M                                                           
查看参数                                                                                           
/application/apache/bin/apachectl                                                              
启动apache                                                                                       
/application/apache/bin/apachectl start                                                        
                                                                                               
查看http端口80是否存在                                                                                 
netstat -lnt|grep 80                                                                           
查看端口号                                                                                          
lsof -i tcp:80                                                                                 
                                                                                               
查看进程                                                                                           
ps -ef|grep http                                                                               
                                                                                               
打开浏览器http://192.168.1.106查看apache是否安装成功                                                        
如果出现it works,说明成功,没有则排查问题                                                                      
1查看iptables防火墙和selinux是否关闭                                                                     
/etc/init.d/iptables stop                                                                      
                                                                                               
非正式情况下,允许iptables永久关闭                                                                          
chkconfig iptables off                                                                         
                                                                                               
setenforce 0                                                                                   
vim /etc/selinux/config                                                                        
SELINUX=disabled                                                                               
                                                                                               
在本地服务器测试wget http://192.168.1.106测试                                                            
                                                                                               
查看apache日志,tail -100 /application/apache/logs/error_log                                        
                                                                                               
web站点布置                                                                                        
apache的默认站点目录,是安装目录下的/application/apache/htdocs                                                
配置文件/application/apache/conf/httpd.conf中查到,内容如下:                                               
#documentRoot:the directory out of which you will serve your                                   
#documents,By default,all requests are taken from this directory....                           
                                                                                               
cd /application/apache/htdocs/                                                                 
index.html 为apache默认网页替换掉就好                                                                    
                                                                                               
*************************************************************                                  
apache配置说明                                                                                     
apache的目录结构说明                                                                                  
    ls -l /application/apache/                                                                 
                                                                                               
                                                                                               
    [root@centos ~]# tree /app_ser/apache/bin                                                  
    /app_ser/apache/bin                                                                        
    ├── ab              //压力测试工具                                                               
    ├── apachectl       //apache启动命令                                                           
    ├── apr-1-config                                                                           
    ├── apu-1-config                                                                           
    ├── apxs            //为apache HTTP服务编译器和安装扩展模块                                             
    ├── checkgid                                                                               
    ├── dbmmanage                                                                              
    ├── envvars                                                                                
    ├── envvars-std                                                                            
    ├── htcacheclean    //清理磁盘缓冲命令                                                             
    ├── htdbm                                                                                  
    ├── htdigest                                                                               
    ├── htpasswd        //建立更新基本认证文件,配置nagios等时会用                                              
    ├── httpd           //为apache的控制命令程序                                                       
    ├── httxt2dbm                                                                              
    ├── logresolve                                                                             
    └── rotatelogs      //apache自带的日志轮询命令                                                      
                                                                                               
                                                                                               
                                                                                               
    [centos@centos ~]# tree -L 1 /app_ser/apache/conf/                                         
    /app_ser/apache/conf/                                                                      
    ├── extra   //这是额外的apache配置文件目录,这目录里的文件我们经常访问修改                                            
    ├── httpd.conf  //apache的主配置文件,经常访问修改,每一行都要能清楚                                             
    ├── magic                                                                                  
    ├── mime.types                                                                             
    └── original                                                                               
                                                                                               
    [root@centos ~]# tree -L 1 /app_ser/apache/htdocs/                                         
    /app_ser/apache/htdocs/     //这是编译安装时apache的默认站点目录                                         
    └── index.html      //默认的首页文件,在实际环境中,习惯使用,不是必须的                                            
                                                                                               
                                                                                               
    ot@centos ~]# tree -L 1 /app_ser/apache/logs/                                              
    /app_ser/apache/logs/                                                                      
    ├── access_log      //apache的默认访问日志文件                                                      
    ├── cgisock.37361                                                                          
    ├── error_log       //apache的错误日志文件                                                        
    └── httpd.pid       //http的pid文件,http进程启动后,会把所有的进程id号写到此文件                                 
                                                                                               
                                                                                               
    [root@centos ~]# tree -L 1 /app_ser/apache/modules/                                        
    /app_ser/apache/modules/    //apache的模块目录                                                  
    └── httpd.exp                                                                              
                                                                                               
                                                                                               
                                                                                               
                                                                                               
apache的主配置文件                                                                                   
    /app_ser/apache/conf/httpd.conf                                                            
                                                                                               
apache的扩展配置文件                                                                                  
    apache虚拟主机的配置                                                                              
    vim /app_ser/apache/conf/extra/httpd-vhosts.conf                                           
                                                                                               
[root@centos ~]# tree /app_ser/apache/conf/extra/                                              
/app_ser/apache/conf/extra/                                                                    
├── httpd-autoindex.conf                                                                       
├── httpd-dav.conf          //dav支持配置                                                          
├── httpd-default.conf      //配置的是apache的相关服务参数                                                
├── httpd-info.conf                                                                            
├── httpd-languages.conf    //语言支持配置                                                           
├── httpd-manual.conf                                                                          
├── httpd-mpm.conf          //服务池管理,也就是优化apache的一个配置文件                                         
├── httpd-multilang-errordoc.conf                                                              
├── httpd-ssl.conf          //提供apache SSL的支持配置文件                                              
├── httpd-userdir.conf                                                                         
└── httpd-vhosts.conf       //这是虚拟主机的配置文件                                                      
                                                                                               
                                                                                               
                                                                                               
----------------------------------------------------------------                               
摘录httpd.conf主配置文件中+395的include行,默认是注释掉的                                                        
#include conf/extra/httpd-vhosts.conf                                                          
去掉#号,表示开启虚拟主机的配置                                                                               
----------------------------------------------------------------                               
                                                                                               
基于域名的虚拟主机实战配置                                                                                  
    配置apache基于域名的虚拟主机                                                                          
    将/app_ser/apache/conf/httpd.conf +395 的注释取消                                                
    在修改/app_ser/apache/conf/extra/httpd.vhosts.conf文件                                          
    修改完后使用下面的命令检查,看是否有语法错误                                                                     
[root@centos extra]# ../../bin/apachectl -t                                                    
                                                                                               
授权chown -R apache:apache /var/blog                                                             
                                                                                               
将index.html添加在/var/blog/,测试使用                                                                  
使用graceful参数,静默重启apache,使用户无感知,而不使用restart                                                     
/apache/bin/apachectl graceful                                                                 
                                                                                               
检查进程                                                                                           
ps -ef|grep httpd                                                                              
检查端口                                                                                           
netstat -lnt|grep 80                                                                           
                                                                                               
将httpd.config的S指定域名和端口修改为:                                                                     
 ServerName 127.0.0.1:80                                                                       
                                                                                               
将/app_ser/apache/conf/extra/httpd-vhosts.conf的内容修改为:                                           
    <VirtualHost *:80>                                                                         
        ServerAdmin 522802558@qq.com                                                           
        DocumentRoot "/var/blog"                                                               
        ServerName  www.sheng163.com                                                           
        ServerAlias sheng163.com                                                               
        ErrorLog "logs/shengerror_log"                                                         
        CustomLog "logs/sheng-access_log" common                                               
    </VirtualHost>                                                                             
                                                                                               
                                                                                               
做DNS解析,本笔记本为                                                                                   
C:\Windows\System32\drivers\etc\hosts                                                          
192.168.1.106 www.sheng163.com sheng163.com                                                    
将会出现403错误,修改#<Directory "/app_ser/apache2/htdocs">为                                            
 <Directory "/var/blog">即可                                                                     
                                                                                               
在浏览器中输入自定义的域名就可访问                                                                              
--------------------------------------------------------------                                 
                                                                                               
基于ip的虚拟主机配置:(现在很少使用了)                                                                          
添加别名ip   ifconfig eth0:181 192.168.1.181 netmask 255.255.255.0 up                              
删除别名ip   ifconfig eth0:181 192.168.1.181 netmask 255.255.255.0 down                            
修改apache虚拟主机配置文件,修改服务器名即可                                                                      
检查                                                                                             
/bin/apachectl -t                                                                              
重启                                                                                             
/bin/apachectl graceful                                                                        
打开浏览器输入ip家端口号即可访问                                                                              
http://192.168.1.181:8090/                                                                     
                                                                                               
---------------------------------------------------------------                                
基于端口的虚拟主机配置:(也不多见,一般用在内部人员使用)                                                                  
在httpd.conf    listen行添加端口号8091即可                                                              
修改httpd-vhosts.conf 的端端口为上面的端口号8091                                                            
检查                                                                                             
/bin/apachectl -t                                                                              
重启                                                                                             
/bin/apachectl graceful                                                                        
打开浏览器输入ip家端口号即可访问                                                                              
http://www.sheng163.com                                                                        
---------------------------------------------------------------                                
                                                                                               
apache优化                                                                                       
mod_deflate模块安装                                                                                
查看模块是否安装                                                                                       
bin/apachectl -l|grep mod_deflate                                                              
若没有安装则安装                                                                                       
cd /data/tool/httpd-2.2.31/modules/filters/                                                    
ll mod_deflate.c                                                                               
/app_ser/apache/bin/apxs -i -c -a mod_deflate                                                  
报错则处理                                                                                          
                                                                                               
将压缩配置写入http.conf里面就可使所有虚拟主机生效                                                                  
<ifmodule mod_deflate.c>                                                                       
    DeflateCompressionLevel 9                                                                  
    SetOutFilter DEFLATE                                                                       
    AddOutputFilterBytype DEFLATE  text/html text/plain text/xml                               
    AddOutputFilterBytype DEFLATE application/javascript                                       
    AddOutputFilterBytype DEFLATE text/css                                                     
</ifmodule>                                                                                    
                                                                                               
-------------------------------------------------------------                                  
mod_exprise模块安装:允许apache配置文件控制http的“Exprise:”和                                                 
“cache-control:”头内容,这个模块控制服务器应答时的exprise头内容                                                    
和cache-control头的max-age指令,有效可以设置为相对与源文件的最后修改时刻或者客户访问时刻                                         
                                                                                               
检查是否安装mod_exprise                                                                              
/app_ser/apache/module/|grep exprise                                                           
grep mo_exprise.so /app_ser/apache/conf/httpd.conf                                             
以上两种情况不能同时存在,否则可能会有冲突                                                                          
查看mod_expires.so是否编译                                                                           
grep mod_expires.so /app_ser/apache/conf/httpd.conf                                            
                                                                                               
                                                                             
                                                                                               
===============================================================                                
处理apache的403错误问题                                                                               
http状态码:403 禁止访问                                                                               
apache配置文件中没有对站点目录的权限许可配置                                                                      
    <Directory "/app_ser/apache2/cgi-bin">  //修改路径                                             
        AllowOverride None                                                                     
        Options None                                                                           
        Order allow,deny                                                                       
        Allow from all                                                                         
    </Directory>                                                                               
                                                                                               
apache站点目录下无首页文件,而apache没有预设首页index.html                                                       
禁止站点目录浏览,在Index 前添加- 或者删除                                                                      
或者将Option设为none                                                                                                                                      
                                                                                               
原文:http://www.cnblogs.com/erick2/p/5878826.html