httpd
时间：2023-07-16 01:54:02 | 来源：网站运营
时间：2023-07-16 01:54:02 来源：网站运营
httpd：
- 1. httpd简介
- 2. httpd版本
- 2.1 httpd的特性
- 2.2 httpd-2.4新增的模块
- 3. httpd基础
- 3.1 httpd自带的工具程序
- 3.2 rpm包安装的httpd程序环境
- 3.3 web相关的命令
- 3.3.1 curl命令
- 3.3.2 httpd命令
- 4. 编译安装httpd-2.4
- 5. httpd常用配置
- 作业
1. httpd简介
httpd是Apache超文本传输协议（HTTP）服务器的主程序。被设计为一个独立运行的后台进程，它会建立一个处理请求的子进程或线程的池。
通常，httpd不应该被直接调用，而应该在类Unix系统中由apachectl调用，在Windows中作为服务运行。
2. httpd版本
本文主要介绍httpd的两大版本，httpd-2.2和httpd-2.4。
- CentOS6系列的版本默认提供的是httpd-2.2版本的rpm包
- CentOS7系列的版本默认提供的是httpd-2.4版本的rpm包
2.1 httpd的特性
httpd有很多特性，下面就分别来说说httpd-2.2版本和httpd-2.4版本各自的特性。
2.2 httpd-2.4新增的模块
httpd-2.4在之前的版本基础上新增了几大模块，下面就几个常用的来介绍一下。
3. httpd基础
3.1 httpd自带的工具程序
3.2 rpm包安装的httpd程序环境
mpm：以DSO机制提供，配置文件为/etc/httpd/conf.modules.d/00-mpm.conf3.3 web相关的命令
3.3.1 curl命令
curl是基于URL语法在命令行方式下工作的文件传输工具，它支持FTP，FTPS，HTTP，HTTPS，GOPHER，TELNET，DICT，FILE及LDAP等协议。
curl支持以下功能：
- https认证
- http的POST/PUT等方法
- ftp上传
- kerberos认证
- http上传
- 代理服务器
- cookies
- 用户名/密码认证
- 下载文件断点续传
- socks5代理服务器
- 通过http代理服务器上传文件到ftp服务器
//语法：curl [options] [URL ...]//常用的options： -A/--user-agent <string>
//设置用户代理发送给服务器 -basic
//使用Http基本认证 --tcp-nodelay
//使用TCP_NODELAY选项 -e/--referer <URL>
//来源网址 --cacert <file>
//CA证书（SSL） --compressed
//要求返回时压缩的格式 -H/--header <line>
//自定义请求首部信息传递给服务器 -I/--head
//只显示响应报文首部信息 --limit-rate <rate>
//设置传输速度 -u/--user <user[:password]>
//设置服务器的用户和密码 -0/--http1
//使用http 1.0版本，默认使用1.1版本。这个选项是数字0而不是字母o -o/--output
//把输出写到文件中 -
#/--progress-bar //进度条显示当前的传送状态//通过curl下载文件[root@localhost ~]
# ls[root@localhost ~]
# curl -o myblog.html http://http://blog.51cto.com/itchentao % Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed100 67025 0 67025 0 0 87248 0 --:--:-- --:--:-- --:--:-- 87385
[root@localhost ~]
# lsmyblog.html
3.3.2 httpd命令
//语法：httpd [options]
//常用的options：
-l //查看静态编译的模块，列出核心中编译了哪些模块。 /
//它不会列出使用LoadModule指令动态加载的模块
-M //输出一个已经启用的模块列表，包括静态编译在服务 /
//器中的模块和作为DSO动态加载的模块
-v //显示httpd的版本，然后退出
-V //显示httpd和apr/apr-util的版本和编译参数，然后退出
-X //以调试模式运行httpd。仅启动一个工作进程，并且 /
//服务器不与控制台脱离
-t //检查配置文件是否有语法错误
[root@localhost ~]# httpd -l
Compiled in modules:
core.c
mod_so.c
http_core.c
[root@localhost ~]# httpd -M
AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using localhost.localdomain.
Set the 'ServerName' directive globally
to suppress this message
Loaded Modules:
core_module (static)
so_module (static)
http_module (static)
access_compat_module (shared)
actions_module (shared)
alias_module (shared)
allowmethods_module (shared)
auth_basic_module (shared)
......
......
[root@localhost ~]# httpd -v
Server version: Apache/2.4.6 (CentOS)
Server built: Jun 27 2018 13:48:59
[root@localhost ~]# httpd -V
AH00558: httpd: Could
not reliably determine the
server's fully qualified domain name, using localhost.localdomain. Set the 'ServerName' directive globally to suppress this message
Server version: Apache/2.4.6 (CentOS)
Server built: Jun 27 2018 13:48:59
Server's
Module Magic Number: 20120211:24
Server loaded: APR 1.4.8, APR-UTIL 1.5.2
Compiled
using: APR 1.4.8, APR-UTIL 1.5.2
Architecture: 64-bit
Server MPM: prefork
threaded:
no forked: yes (variable process
count)
Server compiled
with....
-D APR_HAS_SENDFILE
-D APR_HAS_MMAP
-D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
-D APR_USE_SYSVSEM_SERIALIZE
-D APR_USE_PTHREAD_SERIALIZE
-D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
-D APR_HAS_OTHER_CHILD
-D AP_HAVE_RELIABLE_PIPED_LOGS
-D DYNAMIC_MODULE_LIMIT=256
-D HTTPD_ROOT="/etc/httpd"
-D SUEXEC_BIN="/usr/sbin/suexec"
-D DEFAULT_PIDLOG="/run/httpd/httpd.pid"
-D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
-D DEFAULT_ERRORLOG="logs/error_log"
-D AP_TYPES_CONFIG_FILE="conf/mime.types"
-D SERVER_CONFIG_FILE="conf/httpd.conf"
4. 编译安装httpd-2.4
httpd依赖于apr-1.4+，apr-util-1.4+，[apr-icon]
apr：apache portable runtime
//安装开发环境
[root@localhost ~]
# yum groups mark install "Development Tools"[root@localhost ~]
# groupadd -r apache[root@localhost ~]
# useradd -r -g apache apache[root@localhost ~]
# yum -y install openssl-devel pcre-devel expat-devel libtoolLoaded plugins: product-id, search-disabled-repos, subscription-manager
This system
is not registered with an entitlement server. You can use subscription-manager to register.
Resolving Dependencies
--> Running transaction check
---> Package openssl-devel.x86_64 1:1.0.2k-12.el7 will be installed
--> Processing Dependency: openssl-libs(x86-64) = 1:1.0.2k-12.el7
for package: 1:openssl-devel-1.0.2k-12.el7.x86_64
......
......
libselinux-utils.x86_64 0:2.5-12.el7 libsepol.x86_64 0:2.5-8.1.el7
libss.x86_64 0:1.42.9-12.el7_5 openssl.x86_64 1:1.0.2k-12.el7
openssl-libs.x86_64 1:1.0.2k-12.el7
Complete!
//下载并安装apr-1.4+和apr-util-1.4+
[root@localhost ~]
# cd /usr/src/[root@localhost src]
# wget http://mirror.bit.edu.cn/apache/apr/apr-1.6.5.tar.gz[root@localhost src]
# wget http://mirror.bit.edu.cn/apache/apr/apr-util-1.6.1.tar.gz[root@localhost src]
# lsapr-1.6.5.tar.gz apr-util-1.6.1.tar.gz debug kernels
[root@localhost src]
# tar xf apr-1.6.5.tar.gz[root@localhost src]
# tar xf apr-util-1.6.1.tar.gz[root@localhost src]
# lsapr-1.6.5 apr-1.6.5.tar.gz apr-util-1.6.1 apr-util-1.6.1.tar.gz debug kernels
[root@localhost src]
# cd apr-1.6.5[root@localhost apr-1.6.5]
# vim configure cfgfile="${ofile}T"
trap "$RM /"$cfgfile/"; exit 1" 1 2 15
# $RM "$cfgfile" //将此行加上注释，或者删除此行[root@localhost apr-1.6.5]
# ./configure --prefix=/usr/local/apr配置过程略...
[root@localhost apr-1.6.5]
# make && make install编译安装过程略...
[root@localhost apr-1.6.5]
# cd /usr/src/apr-util-1.6.1[root@localhost apr-util-1.6.1]
# ./configure --prefix=/usr/local/apr-util --with-apr=/usr/local/apr配置过程略...
[root@localhost apr-util-1.6.1]
# make && make install编译安装过程略...
//编译安装httpd
[root@localhost ~]
# wget http://mirror.bit.edu.cn/apache/httpd/httpd-2.4.38.tar.gz[root@localhost ~]
# lshttpd-2.4.38.tar.gz
[root@localhost ~]
# tar xf httpd-2.4.38.tar.gz[root@localhost ~]
# cd httpd-2.4.38[root@localhost httpd-2.4.38]
# ./configure --prefix=/usr/local/apache /--sysconfdir=/etc/httpd24 /
--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
[root@localhost httpd-2.4.38]
# make && make install编译安装过程略...
5. httpd常用配置
切换使用MPM（编辑/etc/httpd/conf.modules.d/00-mpm.conf文件）：//LoadModule mpm_NAME_module modules/mod_mpm_NAME.so//NAME有三种，分别是：
prefork
event
worker
[root@localhost conf.modules.d]
# pwd/etc/httpd/conf.modules.d
[root@localhost conf.modules.d]
# ls00-base.conf 00-lua.conf 00-proxy.conf 01-cgi.conf00-dav.conf 00-mpm.conf 00-systemd.conf
[root@localhost conf.modules.d]
# vim 00-mpm.conf# Select the MPM module which should be used by uncommenting exactly# one of the following LoadModule lines:# prefork MPM: Implements a non-threaded, pre-forking web server# See: http://httpd.apache.org/docs/2.4/mod/prefork.htmlLoadModule mpm_prefork_module modules/mod_mpm_prefork.so
访问控制法则：注意：httpd-2.4版本默认是拒绝所有主机访问的，所以安装以后必须做显示授权访问示例：
<Directory /var/www/html/www>
<RequireAll>
Require not ip 192.168.1.20
Require all granted
</RequireAll></Directory>
虚拟主机：虚拟主机有三类：
- 相同IP不同端口
- 不同IP相同端口
- 相同IP相同端口不同域名
//设置主机名
[root@localhost ~]
# vim /etc/httpd/conf/httpd.conf......
ServerAdmin root@localhost
## 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
http://www.example.com:80 //取消此行前面的
#号......
[root@localhost ~]
# vim /etc/httpd/conf/httpd.conf//在配置文件的最后加上如下内容
[root@localhost ~]
# tail -25 /etc/httpd/conf/httpd.conf#virtual host 1 # 虚拟主机1的配置<VirtualHost 172.16.12.128:80>
ServerName
http://www.wangqing.com DocumentRoot "/var/www/html/www"
ErrorLog "/var/log/httpd/www/error_log"
CustomLog "/var/log/httpd/www/access_log" combined
<Directory /var/www/html/www>
<RequireAll>
Require all granted
Require
not ip 192.168.1
</RequireAll>
</Directory>
</VirtualHost>
# virtual host 2 # 虚拟主机2的配置<VirtualHost 172.16.12.128:80>
ServerName
http://blog.wangqing.com DocumentRoot "/var/www/html/blog"
ErrorLog "/var/log/httpd/blog/error_log"
CustomLog "/var/log/httpd/blog/access_log" combined
<Directory /var/www/html/blog>
<RequireAll>
Require all granted
</RequireAll>
</Directory>
</VirtualHost>
//创建网页目录并修改属主属组
[root@localhost ~]
# cd /var/www/html/[root@localhost html]
# ls[root@localhost html]
# mkdir www blog[root@localhost html]
# lltotal 0
drwxr-xr-x 2 root root 6 Aug 5 16:56 blog
drwxr-xr-x 2 root root 6 Aug 5 16:56 www
[root@localhost html]
# chown -R apache.apache blog[root@localhost html]
# chown -R apache.apache www[root@localhost html]
# lltotal 0
drwxr-xr-x 2 apache apache 6 Aug 5 16:56 blog
drwxr-xr-x 2 apache apache 6 Aug 5 16:56 www
//创建网页
[root@localhost html]
# pwd/var/www/html
[root@localhost html]
# lsblog www
[root@localhost html]
# echo 'hello welcome to visit www' > www/index.html[root@localhost html]
# echo 'hello welcome to visit blog' > blog/index.html//创建相应网页的日志目录
[root@localhost ~]
# mkdir /var/log/httpd/{www,blog}[root@localhost ~]
# ll /var/log/httpd/total 0
drwxr-xr-x 2 root root 6 Aug 5 09:11 blog
drwxr-xr-x 2 root root 6 Aug 5 09:11 www
[root@localhost ~]
# chown -R apache.apache /var/log/httpd///启动服务并查看是否有80端口
[root@localhost ~]
# systemctl start httpd[root@localhost ~]
# ss -antlState Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 128 *:22 *:*
LISTEN 0 100 127.0.0.1:25 *:*
LISTEN 0 128 :::80 :::*
LISTEN 0 128 :::22 :::*
LISTEN 0 100 ::1:25 :::*
//在客户机上验证1.修改hosts文件
~ cat /etc/hosts
### Host Database## localhost is used to configure the loopback interface# when the system is booting. Do not change this entry.##127.0.0.1 localhost255.255.255.255 broadcasthost
::1 localhost118.31.33.0 zabbix.forevercq.com0.0.0.0
http://account.jetbrains.com//添加以下2行172.16.12.128 www.wangqing.com172.16.12.128
http://blog.wangqing.com2.在浏览器上打开网页测试
ssl：启用模块：编辑/etc/httpd/conf.modules.d/00-base.conf文件，添加下面这行，如果已经有了但是注释了，则取消注释即可
LoadModule ssl_module modules/mod_ssl.so
配置https步骤：- 生成证书(参考博客linux运维系列第6章)
- 配置httpd.conf，取消以下内容的注释
LoadModule ssl_module modules/mod_ssl.so
Include /etc/httpd24/extra/httpd-vhosts.conf
Include /etc/httpd24/extra/httpd-ssl.conf
- 在httpd-vhosts.conf中配置虚拟主机
- 在httpd-ssl.conf中配置证书的位置
- 检查配置文件是否有语法错误
- 启动或重启服务
- 设置hosts以便用域名访问(仅学习阶段，企业实际工作中无需做此步。)
作业
1.编译安装httpd-2.4
2.配置三种不同风格的虚拟主机
3.写博客，要写明环境背景、配置步骤，要有验证截图
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