编译安装httpd（httpd 2.4.4，相关软件包可到apache官网上下载）
# hwclock -s 将软件时间同步为硬件时间，防止安装软件时出错
1、解决依赖关系
httpd-2.4.4需要较新版本的apr和apr-util，因此需要事先对其进行升级。这里使用源码包进行升级（apr-1.5.2，apr-util-1.5.4 ）
(1) 编译安装apr
# tar xf apr-1.5.2.tar.bz2
# cd apr-1.5.2
# ./configure --prefix=/usr/local/apr
# make && make install
(2) 编译安装apr-util
# tar xf apr-util-1.5.4.tar.bz2
# cd apr-util-1.5.4
# ./configure --prefix=/usr/local/apr-util --with-apr=/usr/local/apr
# make && make install
(3) httpd-2.4.4编译过程也要依赖于pcre-devel软件包，需要事先安装。
#yum -y install pcre-devel
(4) 可在编译安装httpd时会报错：checking for OpenSSL version >=0.9.7 ... FAILED
#yum -y install openssl-devel
#yum update openssl
2、编译安装httpd-2.4.4
# tar xf httpd-2.4.4.tar.bz2
# cd httpd-2.4.4
# ./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=most --with-mpm=event
（含义：--perfix=/usr/local/apache 指定安装路径；--sysconfdir=/etc/httpd 指定配置文件路径；--enable-so apache核心装载DSO，但实际不编译任何动态模块；--enable-ssl 支持ssl模块；--enable-cgi支持cgi模块；--enable-rewrite 支持url重写；--with-zlib支持zlib库文件；--with-pcre 包含pcre函数；--with-apr=/usr/local/apr 指定apr的路径；--with-apr-util=/usr/local/apr-util 指明apr-util路径；--enable-modules=most 支持模块:支持共享模块；--with-mpm=event加载模块event）
# make && make install
3、修改httpd的主配置文件，设置其Pid文件的路径
#vim /etc/httpd/httpd.conf，添加如下行即可：
PidFile "/var/run/httpd.pid"
4、提供SysV服务脚本/etc/rc.d/init.d/httpd，内容如下：
#!/bin/bash
#
# httpd Startup script for the Apache HTTP Server
#
# chkconfig: - 85 15
# description: Apache is a World Wide Web server. It is used to serve \
# HTML files and CGI.
# processname: httpd
# config: /etc/httpd/conf/httpd.conf
# config: /etc/sysconfig/httpd
# pidfile: /var/run/httpd.pid
# Source function library.
. /etc/rc.d/init.d/functions
if [ -f /etc/sysconfig/httpd ]; then
. /etc/sysconfig/httpd
fi
# Start httpd in the C locale by default.
HTTPD_LANG=${HTTPD_LANG-"C"}
# This will prevent initlog from swallowing up a pass-phrase prompt if
# mod_ssl needs a pass-phrase from the user.
INITLOG_ARGS=""
# Set HTTPD=/usr/sbin/httpd.worker in /etc/sysconfig/httpd to use a server
# with the thread-based "worker" MPM; BE WARNED that some modules may not
# work correctly with a thread-based MPM; notably PHP will refuse to start.
# Path to the apachectl script, server binary, and short-form for messages.
apachectl=/usr/local/apache/bin/apachectl
httpd=${HTTPD-/usr/local/apache/bin/httpd}
prog=httpd
pidfile=${PIDFILE-/var/run/httpd.pid}
lockfile=${LOCKFILE-/var/lock/subsys/httpd}
RETVAL=0
start() {
echo -n $"Starting $prog: "
LANG=$HTTPD_LANG daemon --pidfile=${pidfile} $httpd $OPTIONS
RETVAL=$?
echo
[ $RETVAL = 0 ] && touch ${lockfile}
return $RETVAL
}
stop() {
echo -n $"Stopping $prog: "
killproc -p ${pidfile} -d 10 $httpd
RETVAL=$?
echo
[ $RETVAL = 0 ] && rm -f ${lockfile} ${pidfile}
}
reload() {
echo -n $"Reloading $prog: "
if ! LANG=$HTTPD_LANG $httpd $OPTIONS -t >&/dev/null; then
RETVAL=$?
echo $"not reloading due to configuration syntax error"
failure $"not reloading $httpd due to configuration syntax error"
else
killproc -p ${pidfile} $httpd -HUP
RETVAL=$?
fi
echo
}
# See how we were called.
case "$1" in
start)
start
;;
stop)
stop
;;
status)
status -p ${pidfile} $httpd
RETVAL=$?
;;
restart)
stop
start
;;
condrestart)
if [ -f ${pidfile} ] ; then
stop
start
fi
;;
reload)
reload
;;
graceful|help|configtest|fullstatus)
$apachectl [email protected]
RETVAL=$?
;;
*)
echo $"Usage: $prog {start|stop|restart|condrestart|reload|status|fullstatus|graceful|help|configtest}"
exit 1
esac
exit $RETVAL
而后为此脚本赋予执行权限并加入服务列表：
# chmod +x /etc/rc.d/init.d/httpd
# chkconfig --add httpd
5.提供执行相关命令所需的环境变量
#vim /etc/profile.d/httpd.sh，添加以下内容：
export PATH=$PATH:/usr/local/apache/bin
6.至此，http服务配置结束，可以启动测试了
#service httpd restart