实测centos 7 中安装mysql-5.7版本数据库的详细过程,在安装mysql-5.7的时候,可以通过查看日志(/var/log/mysqld.log)提示的错误,进行一步步的调试安装。这样可以快速准确的解决各种问题,完成搭建。
官网下载地址:https://dev.mysql.com/downloads/mysql/5.7.html#downloads
一、安装MySQL
下载解压:
#下载软件包
wget -c https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.23-1.el7.x86_64.rpm-bundle.tar
#解压包
tar -xvf mysql-5.7.23-1.el7.x86_64.rpm-bundle.tar
#包
[root@zixuephp ~]# ls
mysql-5.7.23-1.el7.x86_64.rpm-bundle.tar
mysql-community-libs-5.7.23-1.el7.x86_64.rpm
mysql-community-client-5.7.23-1.el7.x86_64.rpm
mysql-community-libs-compat-5.7.23-1.el7.x86_64.rpm
mysql-community-common-5.7.23-1.el7.x86_64.rpm
mysql-community-minimal-debuginfo-5.7.23-1.el7.x86_64.rpm
mysql-community-devel-5.7.23-1.el7.x86_64.rpm
mysql-community-server-5.7.23-1.el7.x86_64.rpm
mysql-community-embedded-5.7.23-1.el7.x86_64.rpm
mysql-community-server-minimal-5.7.23-1.el7.x86_64.rpm
mysql-community-embedded-compat-5.7.23-1.el7.x86_64.rpm
mysql-community-test-5.7.23-1.el7.x86_64.rpm
mysql-community-embedded-devel-5.7.23-1.el7.x86_64.rpm
依次安装MySQL rpm:
rpm -ivh mysql-community-server-5.7.23-1.el7.x86_64.rpm --force --nodeps
rpm -ivh mysql-community-libs-5.7.23-1.el7.x86_64.rpm --force --nodeps
rpm -ivh mysql-community-client-5.7.23-1.el7.x86_64.rpm --force --nodeps
rpm -ivh mysql-community-common-5.7.23-1.el7.x86_64.rpm --force --nodeps
rpm -ivh mysql-community-libs-compat-5.7.23-1.el7.x86_64.rpm --force --nodeps
二、启动MySQL
systemctl start mysqld
[root@zixuephp ~]# ps -aux|grep mysqld
mysql 25145 1.5 8.1 1119500 166632 ? Sl 10:10 0:00 /usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid
*
如果启动失败,则需要对配置文件进行配置(增加配置文件中不存在的下面的配置参数):
#编辑配置文件
vim /etc/my.cof
#配置文件内容
#数据库存放目录,如果不存在旧创建
datadir=/var/lib/mysql/data
#连接文件,如果不存在则创建,并设置mysql用户所有者和mysql组
socket=/var/lib/mysql/mysql.sock
#定义默认时间戳
explicit_defaults_for_timestamp=true
#设置运行用户
user=mysql
三、加入开机启动
systemctl enable mysqld
systemctl daemon-reload
四、查看默认root密码
cat /var/log/mysqld.log |grep 'temporary password'
[root@localhost]#[Note] A temporary password is generated for root@localhost: iefe_ggtr; #其中 iefe_ggtr; 就是初始密码了。
*
如果查询不到密码,需要初始化数据库,生成默认系统库表
mysqld --initialize --user=mysql --console
#运行结果:
[root@localhost /]# mysqld --initialize --user=mysql --console
[root@localhost /]# grep 'temporary password' /var/log/mysqld.log
[Note] A temporary password is generated for root@localhost: iefe_ggtr
五、登录MySQL
[root@localhost]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 3
Server version: 5.7.23
mysql->
六、设置密码
登录后需要对初始密码进行重置操作,否则不能进行下一步的数据库操作。
mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('e0+fde1/==='); #重置密码,密码不能太简单
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
4 rows in set (0.00 sec)
本文centos7安装MySQL教程到此结束。激流勇进者方能领略江河源头的奇观胜景。小编再次感谢大家对我们的支持!