CenterOS7在线yum安装MySQL

Linux系统自带的repo是不会自动更新每个软件的最新版本（基本都是比较靠后的稳定版），所以无法通过yum方式安装MySQL的高级版本。所以我们需要先安装带有当前可用的mysql5系列社区版资源的rpm包。

#安装rpm包

[root@openstack-node1 ~]# rpm -Uvh http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm
Retrieving http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm
Preparing… ################################# [100%]
Updating / installing…
1:mysql-community-release-el7-5 ################################# [100%]
查看当前可用的mysql安装资源：
[root@openstack-node1 ~]# yum repolist enabled | grep “mysql.-community.”
!mysql-connectors-community/x86_64 MySQL Connectors Community 2
!mysql-tools-community/x86_64 MySQL Tools Community 3
!mysql56-community/x86_64 MySQL 5.6 Community Server 22
[root@openstack-node1 ~]# yum -y install mysql-community-server
Loaded plugins: fastestmirror, langpacks
base | 3.6 kB 00:00
epel/x86_64/metalink | 4.9 kB 00:00
extras | 3.4 kB 00:00
mysql-connectors-community | 2.5 kB 00:00
mysql-tools-community | 2.5 kB 00:00
mysql56-community | 2.5 kB 00:00
updates | 3.4 kB 00:00
updates/7/x86_64/primary_db | 4.9 MB 00:05
……………………

Installing : mysql-community-common-5.6.30-2.el7.x86_64 1/4
Installing : mysql-community-libs-5.6.30-2.el7.x86_64 2/4
Installing : mysql-community-client-5.6.30-2.el7.x86_64 3/4
Installing : mysql-community-server-5.6.30-2.el7.x86_64 4/4
Verifying : mysql-community-client-5.6.30-2.el7.x86_64 1/4
Verifying : mysql-community-common-5.6.30-2.el7.x86_64 2/4
Verifying : mysql-community-libs-5.6.30-2.el7.x86_64 3/4
Verifying : mysql-community-server-5.6.30-2.el7.x86_64 4/4

Installed:
mysql-community-server.x86_64 0:5.6.30-2.el7

Dependency Installed:
mysql-community-client.x86_64 0:5.6.30-2.el7 mysql-community-common.x86_64 0:5.6.30-2.el7 mysql-community-libs.x86_64 0:5.6.30-2.el7

Complete!

#安装成功后，将其加入开机启动

[root@typecodes ~]# systemctl enable mysqld

#启动mysql服务进程

[root@typecodes ~]# systemctl start mysqld

#配置mysql（设置密码等）

[root@typecodes ~]# mysql_secure_installation