mysql 安装及启动+开机启动
1 检查系统是否自带MySQL
检查系统是否自带MySQL
yum list installed | grep mysql
卸载系统自带MySQL
yum -y remove mysql-libs.x86_64
2 安装MySQL5.6
wget http://repo.mysql.com/mysql-community-release-el6-5.noarch.rpm
这个rpm还不是mysql的安装文件，只是两个yum源文件，执行后，在/etc/yum.repos.d/ 这个目录下多出mysql-community-source.repo和mysql-community.repo
rpm -ivh mysql-community-release-el6-5.noarch.rpm
查看是否已存在可安装文件
yum repolist all | grep mysql
安装MySQL
yum install mysql-community-server
3 启动MySQL
service mysqld start
4 修改密码
由于MySQL刚安装完的时候，root用户的密码默认为空，所以我们需要及时用root用户登录并修改密码。
mysql -u root
use mysql;
update user set password=PASSWORD("这里输入root用户密码") where User='root';
flush privileges;
5 开放远程登录权限
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'root' WITH GRANT OPTION;
FLUSH PRIVILEGES;
其中*.*代表所有资源所有权限，‘root’@'%'中root代表账户名，%代表所有的访问地址，IDENTIFIED BY ‘root’，这个root是指访问密码，WITH GRANT OPTION允许级联授权。
6 设置MySQL开机启动
查看MySQL开机自启动
chkconfig --list | grep mysqld
设置自启动
chkconfig mysqld on
效果如下
PHP 安装
安装参考：https://webtatic.com/packages/php71
To install, first you must add the Webtatic EL yum repository information corresponding to your CentOS/RHEL version to yum:
(大概意思是：安装之前，首先需要把源添加到yum)
CentOS/RHEL 7.x:
yum install epel-release
rpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpm
CentOS/RHEL 6.x:
yum install epel-release
rpm -Uvh https://mirror.webtatic.com/yum/el6/latest.rpm
源添加成功以后可以
yum list | grep php7
查看一下版本
上面显示 包含php7.0 与php7.1两个版本
然后yum安装php7与常用拓展
yum install php71w-cli php71w-common php71w-devel php71w-fpm php71w-gd php71w-mbstring php71w-mcrypt php71w-mysql php71w-opcache php71w-pdo php71w-pdo_dblib php71w-pecl-memcached php71w-pecl-imagick php71w-pecl-mongodb php71w-pecl-redis php71w-xml
启动：/bin/systemctl start php-fpm.service
设置开机启动： systemctl enable php-fpm.service
查看效果: systemctl list-dependencies
Niginx 安装
yum install 直接安装
yum install -y nginx
启动：
/bin/systemctl start nginx.service
设置开机启动
systemctl enable nginx.service
IP地址直接访问效果:
