root账户下，搭建步骤如下：

1. yum install httpd php pcre php-mysql php-pear php-pecl-apc mysql-server ImageMagick sendmail php-intl wget system-config-firewall-tui

2. service mysqld start

3./usr/bin/mysql_secure_installation

4.登陆mysql，建立用户和密码如下：

insert into mysql.user(Host,User,Password) values("localhost","mediawiki",password("1234"));

5. 建立数据库并赋权：
create database wikidb;
grant index, create, select, insert, update, delete, alter, lock tables on wikidb.* to 'mediawiki'@'localhost' identified by '1234';
exit;

远程访问赋权：
grant all privileges on *.* to 'mediawiki'@'192.168.1.111' identified by '1234';
FLUSH PRIVILEGES;

6.cd /var/www/html

7.wget http://download.wikimedia.org/mediawiki/1.18/mediawiki-1.18.2.tar.gz

8.tar xzpf mediawiki-1.18.2.tar.gz

9.mv mediawiki-1.18.2 wiki

10.chown -R apache:apache wiki

11.vi /etc/httpd/conf/httpd.conf 添加：
<Directory "/var/www/html/wiki/images">
Options -Indexes
# Ignore .htaccess files
AllowOverride None

# Serve HTML as plaintext, don't execute SHTML
AddType text/plain .html .htm .shtml .php

# Don't run arbitrary PHP code.
php_admin_flag engine off

# If you've other scripting languages, disable them too.
</Directory>

11. /etc/httpd/conf/httpd.conf  设置serverName

12.chmod 775 /var/www/html/wiki/images

13. vi /etc/php.ini 设置上传文件大小

post_max_size = 128M
upload_max_filesize = 128M

14. 打开系统的 80和443 端口

15.service httpd restart

16. 登陆  http://IP:端口/wiki

设置：database name：wikidb, database username： mediawiki 等（设置时有前面第4步创建的一致）
并选择PHP object caching

17.下载LocalSettings.php并放到/var/www/html/wiki 目录

18.vi /var/www/html/wiki/LocalSettings.php

$wgEnableUploads = true; # Set this to true
# 添加如下:
$wgFileExtensions = array('png','gif','jpg','jpeg','doc','xls','mpp','pdf','ppt','tiff','bmp','docx', 'xlsx', 'pptx','ps','odt','ods','odp','odg','exe');
$wgFileBlacklist = array_diff( $wgFileBlacklist, array ('exe') );  

19.chkconfig httpd on

20.chkconfig mysqld on

21.service sendmail restart

22. chkconfig sendmail on

23. 安装完毕， 开始你的wiki之旅。

问题1：##linux 下apche无法监听端口解决办法

[root@localhost html]# service httpd start
Starting httpd: httpd: Could not reliably determine the server's fully qualified domain name, using localhost.termwikidev for ServerName
(13)Permission denied: make_sock: could not bind to address [::]:81
(13)Permission denied: make_sock: could not bind to address 0.0.0.0:81
no listening sockets available, shutting down
Unable to open logs

解决办法：

semanage port -l | grep http
semanage port -a -t http_port_t -p tcp 81

问题2：### CentOS 打开端口 如打开3306端口，操作如下：

/sbin/iptables -I INPUT -p tcp --dport 3036 -j ACCEPT
保存我们的操作，命令如下：
/etc/rc.d/init.d/iptables save
查看端口的状态，命令如下：
/etc/init.d/iptables status