Apache簡介
Apache HTTP Server（簡稱Apache）是Apache軟件基金會的一個開放源碼的網頁服務器，可以在大多數計算機操作系統中運行，由於其多平台和安全性被廣泛使用，是最流行的Web服務器端軟件之一。它快速、可靠並且可通過簡單的API擴展，將Perl/Python等解釋器編譯到服務器中。關於更多Apache的介紹，可以參考百科“http://baike.baidu.com/view/28283.htm或官網http://www.apache.org/ 或 http://httpd.apache.org/的介紹
Apache軟件下載
Apache的相關軟件包下載地址http://apr.apache.org/projects.html
1. Apache HTTP Server
截止目前為止，Apache HTTP Server 目前最新的版本是 Apache httpd 2.4.6 Released， 下載地址：http://httpd.apache.org/download.cgi#apache24
2. APR and APR-Util包
截止目前為止，APR and APR-Util的最新版本如下，下載地址：http://apr.apache.org/download.cgi
- APR 1.4.8, released June 21, 2013
- APR-util 1.5.2, released April 4, 2013
- APR-iconv 1.2.1, released November 26, 2007
3. PCRE包
截止目前為止，PCRE最新的包為8.33，下載地址如下
可以下載了相關安裝包，上傳到/root/kerry這個臨時目錄。也可以直接通過wget下載
Apache安裝要求
下面是官方文檔的要求，必須安裝APR、APR-Util、PCRE，gcc-c++等包，文檔URL地址http://httpd.apache.org/docs/2.4/install.html
Requirements
The following requirements exist for building Apache httpd:
APR and APR-Util
Make sure you have APR and APR-Util already installed on your system. If you don't, or prefer to not use the system-provided versions, download the latest versions of both APR and APR-Util from Apache APR, unpack them into ./srclib/apr and ./srclib/apr-util (be sure the directory names do not have version numbers; for example, the APR distribution must be under ./srclib/apr/) and use ./configure's --with-included-apr option. On some platforms, you may have to install the corresponding -dev packages to allow httpd to build against your installed copy of APR and APR-Util.
Perl-Compatible Regular Expressions Library (PCRE)
This library is required but not longer bundled with httpd. Download the source code from http://www.pcre.org, or install a Port or Package. If your build system can't find the pcre-config script installed by the PCRE build, point to it using the --with-pcre parameter. On some platforms, you may have to install the corresponding -dev package to allow httpd to build against your installed copy of PCRE.
Disk Space
Make sure you have at least 50 MB of temporary free disk space available. After installation the server occupies approximately 10 MB of disk space. The actual disk space requirements will vary considerably based on your chosen configuration options, any third-party modules, and, of course, the size of the web site or sites that you have on the server.
ANSI-C Compiler and Build System
Make sure you have an ANSI-C compiler installed. The GNU C compiler (GCC) from the Free Software Foundation (FSF) is recommended. If you don't have GCC then at least make sure your vendor's compiler is ANSI compliant. In addition, your PATH must contain basic build tools such as make.
Accurate time keeping
Elements of the HTTP protocol are expressed as the time of day. So, it's time to investigate setting some time synchronization facility on your system. Usually thentpdate or xntpd programs are used for this purpose which are based on the Network Time Protocol (NTP). See the NTP homepage for more details about NTP software and public time servers.
Perl 5 [OPTIONAL]
For some of the support scripts like apxs or dbmmanage (which are written in Perl) the Perl 5 interpreter is required (versions 5.003 or newer are sufficient). If you have multiple Perl interpreters (for example, a systemwide install of Perl 4, and your own install of Perl 5), you are advised to use the --with-perl option (see below) to make sure the correct one is used by configure. If no Perl 5 interpreter is found by the configure script, you will not be able to use the affected support scripts. Of course, you will still be able to build and use Apache httpd.
Apache安裝過程
Step 1：安裝包gcc或gcc-c++
[root@getlnx05 pcre-8.33]# yum list gcc-c++
Loaded plugins: product-id, security, subscription-manager
Updating Red Hat repositories.
Available Packages
gcc-c++.x86_64 4.1.2-51.el5 rhel-debuginfo
[root@getlnx05 pcre-8.33]# yum list gcc
Loaded plugins: product-id, security, subscription-manager
Updating Red Hat repositories.
Installed Packages
gcc.x86_64 4.1.2-51.el5 installed
[root@getlnx05 pcre-8.33]# rpm -q gcc
gcc-4.1.2-51.el5
從上面可見gcc包已經安裝，缺少gcc-c++包，那么接下來安裝包gcc-c++,如果此處不安裝該包，后面安裝過程中會報錯
[root@getlnx05 pcre-8.33]#yum install gcc-c++
Step 2：安裝包APR和APR-Util
[root@getlnx05 kerry]# ls apr*
apr-1.4.8.tar.gz apr-util-1.5.2.tar.gz
[root@getlnx05 kerry]#
[root@getlnx05 kerry]# tar -zxf apr-1.4.8.tar.gz
[root@getlnx05 kerry]# cd apr-1.4.8
[root@getlnx05 apr-1.4.8]# ls
新建目錄/usr/local/apr，用作安裝目錄：
[root@getlnx05 apr-1.4.8]# mkdir /usr/local/apr
[root@getlnx05 apr-1.4.8]# ./configure --prefix=/usr/local/apr
[root@getlnx05 apr-1.4.8]# make
[root@getlnx05 apr-1.4.8]# make install
安裝完成后，可以驗證一下
[ root@getlnx05 apr]# ls -lrt
total 32
drwxr-xr-x 3 root root 4096 Aug 15 06:57 include
drwxr-xr-x 3 root root 4096 Aug 15 06:57 lib
drwxr-xr-x 2 root root 4096 Aug 15 06:57 build-1
drwxr-xr-x 2 root root 4096 Aug 15 06:57 bin
[root@getlnx05 kerry]# mkdir /usr/local/apr-util
[root@getlnx05 kerry]# tar -zxf apr-util-1.5.2.tar.gz
[root@getlnx05 kerry]# cd apr-util-1.5.2
[root@getlnx05 apr-util-1.5.2]# ./configure --prefix=/usr/local/apr-util --with-apr=/usr/local/apr/bin/apr-1-config
[root@getlnx05 apr-util-1.5.2]# make
[root@getlnx05 apr-util-1.5.2]# make install
Step 3：安裝包PRCE
[root@getlnx05 kerry]# unzip pcre-8.33.zip
[root@getlnx05 kerry]# cd pcre-8.33
[root@getlnx05 kerry]#mkdir /usr/local/pcre
[root@getlnx05 pcre-8.33]# ./configure --prefix= /usr/local/pcre--with-apr=/usr/local/apr/bin/apr-1-config
[root@getlnx05 pcre-8.33]# make
[root@getlnx05 pcre-8.33]# make install
Step 4：安裝Apache Http Server
[root@getlnx05 kerry]# tar zxvf httpd-2.4.6.tar.gz
[root@getlnx05 kerry]#cd httpd-2.4.6
[root@getlnx05 httpd-2.4.6]# ./configure --prefix=/usr/local/apache --with-pcre=/usr/local/pcre --with-apr=/usr/local/apr --with-apr-util=/usr/local/apr-util
[root@getlnx05 httpd-2.4.6]#make
[root@getlnx05 httpd-2.4.6]#make install
Step 5：啟動Apache服務
[root@getlnx05 httpd-2.4.6]# /usr/local/apache/bin/apachectl start
用瀏覽器訪問http://localhost時提示It works!
Apache安裝問題錦集
問題1：缺少包gcc-c++導致安裝包apr-util不通過
[root@getlnx05 kerry]# unzip pcre-8.33.zip
[root@getlnx05 kerry]# cd pcre-8.33
[root@getlnx05 pcre-8.33]# ./configure --prefix=/usr/local/apr-util -with-apr=/usr/local/apr/bin/apr-1-config
一般出現這個錯誤是因為沒有安裝包gcc-c++,可以通過如下命令檢查，
[root@getlnx05 pcre-8.33]# yum list gcc-c++
Loaded plugins: product-id, security, subscription-manager
Updating Red Hat repositories.
Available Packages
gcc-c++.x86_64 4.1.2-51.el5 rhel-debuginfo
[root@getlnx05 pcre-8.33]# yum list gcc
Loaded plugins: product-id, security, subscription-manager
Updating Red Hat repositories.
Installed Packages
gcc.x86_64 4.1.2-51.el5 installed
[root@getlnx05 pcre-8.33]# rpm -q gcc
gcc-4.1.2-51.el5
[root@getlnx05 pcre-8.33]# rpm -q gcc-c++
問題2：checking for APR-util... configure: error: the --with-apr-util parameter is incorrect
[root@getlnx05 httpd-2.4.6]# ./configure --prefix=/usr/local/apache --with-apr=/usr/local/apr --with-apr-util=/usr/local/apr-util
checking for chosen layout... Apache
checking for working mkdir -p... yes
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking target system type... x86_64-unknown-linux-gnu
configure:
configure: Configuring Apache Portable Runtime library...
configure:
checking for APR... yes
setting CC to "gcc"
setting CPP to "gcc -E"
setting CFLAGS to " -g -O2 -pthread"
setting CPPFLAGS to " -DLINUX -D_REENTRANT -D_GNU_SOURCE"
setting LDFLAGS to " "
configure:
configure: Configuring Apache Portable Runtime Utility library...
configure:
checking for APR-util... configure: error: the --with-apr-util parameter is incorrect. It must specify an install prefix, a build directory, or an apu-config file.
[root@getlnx05 httpd-2.4.6]#
一般是由於APR-util沒有安裝成功，可以通過驗證該目錄是否為空來判斷，因為你有時候執行了make，忘了執行make isntall命令有可能導致這個錯誤。
[root@getlnx05 apr]# cd /usr/local/apr-util
[root@getlnx05 apr-util]# ls
問題3：沒有指定PCRE參數
[root@getlnx05 httpd-2.4.6]# ./configure --prefix=/usr/local/apache --with-apr=/usr/local/apr --with-apr-util=/usr/local/apr-util
checking for chosen layout... Apache
checking for working mkdir -p... yes
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking target system type... x86_64-unknown-linux-gnu
configure:
configure: Configuring Apache Portable Runtime library...
configure:
checking for APR... yes
setting CC to "gcc"
setting CPP to "gcc -E"
setting CFLAGS to " -g -O2 -pthread"
setting CPPFLAGS to " -DLINUX -D_REENTRANT -D_GNU_SOURCE"
setting LDFLAGS to " "
configure:
configure: Configuring Apache Portable Runtime Utility library...
configure:
checking for APR-util... yes
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking how to run the C preprocessor... gcc -E
checking for gcc option to accept ISO C99... -std=gnu99
checking for pcre-config... false
configure: error: pcre-config for libpcre not found. PCRE is required and available from http://pcre.org/
[root@getlnx05 httpd-2.4.6]#
問題4：安裝前忘了先安裝APR相關包
[root@getlnx05 httpd-2.4.6]# ./configure --prefix=/usr/local/appache/
checking for chosen layout... Apache
checking for working mkdir -p... yes
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking target system type... x86_64-unknown-linux-gnu
configure:
configure: Configuring Apache Portable Runtime library...
configure:
checking for APR... no
configure: error: APR not found. Please read the documentation.
[root@getlnx05 httpd-2.4.6]#
問題5：啟動服務時報錯
[root@getlnx05 httpd-2.4.6]# /usr/local/apache/bin/apachectl start
AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using getlnx05.gfg1.esquel.com. Set the 'ServerName' directive globally to suppress this message
這個時候需要編輯httpd.conf配置文件，添加SeraverName的具體IP地址。如下所示
[root@getlnx05 conf]# cd /usr/local/apache/conf/
[root@getlnx05 conf]# ls
extra httpd.conf magic mime.types original
[root@getlnx05 conf]# vi httpd.conf
ServerAdmin you@example.com
#
# ServerName gives the name and port that the server uses to identify itself.
# This can often be determined automatically, but we recommend you specify
# it explicitly to prevent problems during startup.
#
# If your host doesn't have a registered DNS name, enter its IP address here.
#
#ServerName www.example.com:80
ServerName 192.168.9.122:80
#
# Deny access to the entirety of your server's filesystem. You must
# explicitly permit access to web content directories in other
# <Directory> blocks below.
#
"httpd.conf" 502L, 18179C written
[root@getlnx05 conf]# /usr/local/apache/bin/apachectl restart
httpd not running, trying to start
[root@getlnx05 conf]# /usr/local/apache/bin/apachectl start
httpd (pid 7797) already running
如果從其它電腦連接訪問Apache時，輸入url地址：http://192.168.9.122頁面沒有顯示正常，而上面配置也OK，那么你必須關閉防火牆，有時候甚至需要重啟電腦才能OK,重啟Apache服務都無效。
[root@getlnx05 conf]# chkconfig iptables off
[root@getlnx05 conf]# chkconfig iptables off
[root@getlnx05 conf]# /usr/local/apache/bin/apachectl restart
[root@getlnx05 conf]# /usr/local/apache/bin/apachectl restart
[root@getlnx05 conf]#