Httpd-2.4
1.mpm支持運行dos機制
2.支持event mpm
3.支持異步讀寫
4.支持每模塊及每個目錄分別使用各自的日誌級別；
5.每請求配置；
6.增強版的表達式分析
7.支持毫秒級別的keeplive timeout
8.基於fqdn的虛擬主機不再需要namevirtualhost指令；
9.支持用戶自定義變量
新模塊：
1.mod_proxy_fcgi
2.Mod_ratelimt
3.Mod_remoteip
修改了一些配置機制；
不再支持使用order，deny，allow對ip進行訪問控制
httpd依賴於apr，apr-util，apr-icon
apr：apache portable runtime 可移植運行庫
安裝過程：
1.先安裝開發環境:
yum groupinstall "Development Tools" "Server Platform Development" -y yum install -y pcre-devel zlib-devel
要安裝1.4以上版本apr 以及apr-until
2.下載安裝apr-1.5.2
[root@localhost ~]# wget http://mirrors.hust.edu.cn/apache//apr/apr-1.5.2.tar.gz tar -zxvf apr-1.5.2.tar.gz cd apr-1.5.2 ./configure --prefix=/usr/local/apr make make install
3.下載安裝apr-until-1.5.4
[root@localhost ~]# wget http://mirrors.cnnic.cn/apache//apr/apr-util-1.5.4.tar.gz tar -zxvf apr-util-1.5.4.tar.gz cd apr-util-1.5.4 ./configure --prefix=/usr/local/apr-util --with-apr=/usr/local/apr make make install
4.下載http-2.4.17
wget http://mirrors.hust.edu.cn/apache//httpd/httpd-2.4.17.tar.gz [root@localhost httpd-2.4.17]# tar -zxvf httpd-2.4.17.tar.gz
創建apache用戶和組：groupadd -r apache [root@localhost ~]# useradd -r -g apache apache
./configure --prefix=/usr/local/apache --sysconfdir=/etc/httpd --enable-so --enable-ssl --enable-cgi --enable-rewrite --with-zlib --with-pcre --with-apr=/usr/local/apr --with-apr-util=/usr/local/apr-util/ --enable-modules=most --enable-mpms-shared=all --with-mpm=prefork
| --prefix | 指定httpd2.4的安裝路徑 |
| --sysconfdir | 指定配置文件路徑 |
| --enable-so | 啓動sharedobject共享對象 |
| --enable-ssl | 啓用ssl，藉助於此可以實現HTTPS訪問 |
| --enable-cgi | 啓用CGI，可以實現CGI腳本執行 |
| --enable-rewrite | 啓用Rewrite重寫，能夠實現諸如301重定向的功能，以來PCRE包 |
| --with-zlib | 啓用zlib壓縮 |
| --with-pcre | 啓用PCRE |
| --with-apr | 指定apr的路徑，httpd2.4依賴apr1.4版本以上，所以要指明 |
| --with-apr-util | 指定apr-util的路徑，同上 |
| --enable-modules | 啓用哪些模塊加載，most儘可能多的 |
| --enable-mpms-shared=all | http2.4上prefork、worker、event是模塊化的，可以動態加載 |
| --with-mpm=prefork | 指明默認的httpd2.4 MPM，即運行在prefork模型下 |
修改系統用戶：
[root@localhost apache]# vim /etc/httpd/httpd.conf #User daemon #Group daemon User apache Group apache
編譯安裝網頁存放目錄：/usr/local/apache/htdocs
ln -sv /usr/local/apache/include/ /usr/include/httpd
啓動服務：添加環境變量，找到apachectl 命令路徑：
vim /etc/profile.d/httpd.sh export PATH=/usr/local/apache/bin:$PATH apachectl start
或者用hash -r命令清除搜索記錄：
httpd -M 查看全部模塊
查看系統進程：http已經啓動完畢。
[root@localhost ~]# ps aux | grep httpd root 41702 0.0 0.1 72108 1968 ? Ss 01:15 0:00 /usr/local/apache/bin/httpd -k start apache 41703 0.0 0.1 72108 1400 ? S 01:15 0:00 /usr/local/apache/bin/httpd -k start apache 41704 0.0 0.1 72108 1400 ? S 01:15 0:00 /usr/local/apache/bin/httpd -k start apache 41705 0.0 0.2 72108 2040 ? S 01:15 0:00 /usr/local/apache/bin/httpd -k start apache 41706 0.0 0.1 72108 1400 ? S 01:15 0:00 /usr/local/apache/bin/httpd -k start apache 41707 0.0 0.2 72108 2032 ? S 01:15 0:00 /usr/local/apache/bin/httpd -k start apache 41902 0.0 0.1 72108 1408 ? S 02:03 0:00 /usr/local/apache/bin/httpd -k start apache 41903 0.0 0.1 72108 1408 ? S 02:03 0:00 /usr/local/apache/bin/httpd -k start apache 41904 0.0 0.1 72108 1408 ? S 02:03 0:00 /usr/local/apache/bin/httpd -k start root 41919 0.0 0.0 103304 888 pts/0 S+ 02:06 0:00 grep httpd [root@localhost ~]#
# Path to the apachectl script, server binary, and short-form for messages.
apachectl=/usr/local/apache/bin/apachectl
httpd=${HTTPD-/usr/local/apache/bin/httpd}
prog=httpd
pidfile=${PIDFILE-/usr/local/apache/logs/httpd.pid}
lockfile=${LOCKFILE-/var/lock/subsys/httpd}
RETVAL=0
STOP_TIMEOUT=${STOP_TIMEOUT-10}
配置：
1：切換使用mpm：
打開配置文檔找到以下模塊位置：
LoadModule mpm_prefork_module modules/mod_mpm_prefork.so #LoadModule mpm_worker_module modules/mod_mpm_worker.so
NAME:prefork,event,worker
2:修改“main”server的DocumentRoot
打開：
[root@localhost ~]# vim /etc/httpd/httpd.conf
找到：
# DocumentRoot: The directory out of which you will serve your # documents. By default, all requests are taken from this directory, but # symbolic links and aliases may be used to point to other locations. # DocumentRoot "/usr/local/apache/htdocs" 修改兩個主頁目錄 <Directory "/usr/local/apache/htdocs"> 同上，並且一致
3：基於ip的訪問控制法則
允許所有主機訪問：Require all granted
拒絕所有主機訪問：Require all deny
控制特定ip訪問：
require ip IPADDR：授權指定來源的主機訪問
Require not ip IPADDR：拒絕指定來源地址的主機訪問
ipADDR：
ip：192.168.1.1
network/mask 192.168.1.0/24
Network/Lenth
HostName:
FqDN
DOMAIN:
4:虛擬主機配置：
基於IP，port和FQDN
基於FQDN不再需要NameVirtualHost指令
（1）需要註釋掉中心主機：
# DocumentRoot: The directory out of which you will serve your # documents. By default, all requests are taken from this directory, but # symbolic links and aliases may be used to point to other locations. # #DocumentRoot "/usr/local/apache/htdocs" #<Directory "/usr/local/apache/htdocs">
（2）找到配置文件裏的以下參數：
# Virtual hosts Include /etc/httpd/extra/httpd-vhosts.conf 這項開啓
（3）進入到extra目錄下：找到httpd-vhosts.conf
[root@localhost ~]# cd /etc/httpd/extra/ [root@localhost extra]# ls httpd-autoindex.conf httpd-default.conf httpd-languages.conf httpd-mpm.conf httpd-ssl.conf httpd-vhosts.conf httpd-dav.conf httpd-info.conf httpd-manual.conf httpd-multilang-errordoc.conf httpd-userdir.conf proxy-html.conf [root@localhost extra]#
打開httpd-vhosts.conf配置文件：
修改參數，以下實例參考：
<VirtualHost *:80> ServerAdmin [email protected] DocumentRoot "/vhost/www.a.com/htdoc/" ServerName www.a.com ServerAlias a.com ErrorLog "logs/www.a.com-error_log" CustomLog "logs/www.a.com-access_log" combined <Directory "/vhost/www.a.com/htdoc/"> Options None AllowOverride none Require all granted </Directory> </VirtualHost>
修改啓動腳本參數爲以下內容：
apachectl=/usr/local/apache/bin/apachectl
httpd=${HTTPD-/usr/local/apache/bin/httpd}
prog=httpd
pidfile=${PIDFILE-/usr/local/apache/logs/httpd.pid}
lockfile=${LOCKFILE-/var/lock/subsys/httpd}
RETVAL=0
STOP_TIMEOUT=${STOP_TIMEOUT-10}