centos7 下安装apache mysql php phpmyadmin。

1 安装mysql

yum -y install mariadb-server

systemctl start mariadb.service

systemctl enable mariadb.service

mysql_secure_installation

　　默认安装的是5.5.40-MariaDB ，个人喜欢的版本，不再是5.1的那个了。

2 安装apache

yum install -y httpd
systemctl start httpd.service
systemctl enable httpd.service

apache 版本为 2.4.6

3 .安装php

yum -y install php
systemctl restart httpd.service

　　php5.4

4.安装phpmyadmin

这里直接用 yum install phpmyadmin ，前提是epel 源已经被配置好了。

/etc/httpd/conf.d 下多了一个 phpMyAdmin.conf 的配置文件。

这里多了一个访问控制

<Directory /usr/share/phpMyAdmin/>
AddDefaultCharset UTF-8

<IfModule mod_authz_core.c>
# Apache 2.4
<RequireAny>
Require ip 114.88.5.47
Require ip 127.0.0.1
Require ip ::1
</RequireAny>
</IfModule>
<IfModule !mod_authz_core.c>
# Apache 2.2
Order Deny,Allow
Deny from All
Allow from 127.0.0.1
Allow from ::1
</IfModule>
</Directory>

　　也可以看出来，httpd 2.2和2.4是不同的。

5. 其他

其实安装和centos6的版本没啥区别。做了一些软件的升级，但是在启动上面，废弃了原先的/etc/init.d 下面的bash 脚本。而是用了systemctl 这个命令。

相关文件都在 /usr/lib/systemd/system 下面了。看了一下，比之前的bash 脚本简单好多。比如httpd的systemctl文件　　

cat /usr/lib/systemd/system/httpd.service 
[Unit]
Description=The Apache HTTP Server
After=network.target remote-fs.target nss-lookup.target

[Service]
Type=notify
EnvironmentFile=/etc/sysconfig/httpd
ExecStart=/usr/sbin/httpd $OPTIONS -DFOREGROUND
ExecReload=/usr/sbin/httpd $OPTIONS -k graceful
ExecStop=/bin/kill -WINCH ${MAINPID}
# We want systemd to give httpd some time to finish gracefully, but still want
# it to kill httpd after TimeoutStopSec if something went wrong during the
# graceful stop. Normally, Systemd sends SIGTERM signal right after the
# ExecStop, which would kill httpd. We are sending useless SIGCONT here to give
# httpd time to finish.
KillSignal=SIGCONT
PrivateTmp=true

[Install]
WantedBy=multi-user.target

　　还是之前的chkconfig ，也集成在systemctl中了。很简洁 systemctl enable httpd

systemctl enable  httpd
ln -s '/usr/lib/systemd/system/httpd.service' '/etc/systemd/system/multi-user.target.wants/httpd.service'

　　做的操作其实是一个软连接。很直观。操作什么直接反馈回来了。

[root@iZ23f0gpuenZ _local]# systemctl status  httpd
httpd.service - The Apache HTTP Server
   Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled)
   Active: inactive (dead)

Dec 14 04:19:54 iZ23f0gpuenZ systemd[1]: Reloaded The Apache HTTP Server.
Dec 14 14:49:32 iZ23f0gpuenZ systemd[1]: Stopping The Apache HTTP Server...
Dec 14 14:49:34 iZ23f0gpuenZ systemd[1]: Starting The Apache HTTP Server...
Dec 14 14:49:34 iZ23f0gpuenZ httpd[14550]: AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using 10.168.19...s message
Dec 14 14:49:34 iZ23f0gpuenZ systemd[1]: Started The Apache HTTP Server.
Dec 14 14:50:23 iZ23f0gpuenZ systemd[1]: Stopping The Apache HTTP Server...
Dec 14 14:50:24 iZ23f0gpuenZ systemd[1]: Starting The Apache HTTP Server...
Dec 14 14:50:24 iZ23f0gpuenZ httpd[14681]: AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using 10.168.19...s message
Dec 14 14:50:24 iZ23f0gpuenZ systemd[1]: Started The Apache HTTP Server.
Dec 14 15:37:49 iZ23f0gpuenZ systemd[1]: Stopping The Apache HTTP Server...
Dec 14 15:37:50 iZ23f0gpuenZ systemd[1]: Stopped The Apache HTTP Server.
Hint: Some lines were ellipsized, use -l to show in full.

　　status 也做的很hi ，什么时候操作过httpd 的服务也一目了然。

　　centos 7 还做了进一步的升级，比如说加入了firewall ，内置了git 等，做了很实用的升级。更多功能正在摸索中。

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