CentOS7 yum 安裝與配置MySQL5 7

1、配置yum源

shell> wget

# 安裝mysql源

shell> yum localinstall mysql80-community-release-el7-3.noarch.rpm

2，檢查mysql源是否安裝成功

shell> yum repolist enabled | grep "mysql.*-community.*"

[root@localhost etc]# yum repolist enabled | grep "mysql.*-community.*"

mysql-connectors-community/x86_64 mysql connectors community 118
mysql-tools-community/x86_64 mysql tools community 95
mysql57-community/x86_64 mysql 5.7 community server 364
[root@localhost etc]#

shell> yum install mysql-community-serve -y

centos7帶有mariadb而不是mysql，mariadb和mysql一樣也是開元的資料庫，您可以使用yum -y install mariadb-server mariadb命令安裝
解決方案：
如果必須要安裝mysql，首先必須新增mysql社群repo通過輸入命令：
sudo rpm -uvh 
最後使用像安裝mysql的常規方法一樣安裝mysql： yum install mysql mysql-server mysql-libs mysql-server

shell> systemctl start mysqld

ps -ef | grep mysql

6,配置開機啟動(可選）

shell> systemctl enable mysqld

shell> systemctl daemon-reload

mysql安裝完成之後，在/var/log/mysqld.log檔案中給root生成了乙個預設密碼。通過下面的方式找到root預設密碼，然後登入mysql進行修改：

shell> grep 'temporary password' /var/log/mysqld.log
//效果如下
[root@localhost etc]# grep 'temporary password' /var/log/mysqld.log
2019-08-13t13:11:51.563297z 1 [note] a temporary password is generated for root@localhost: ue.gyr,sc9ef
[root@localhost etc]#

shell> mysql -u root -p

mysql> alter user 'root'@'localhost' identified by 'mynewpass4!';

mysql> set password for 'root'@'localhost'=password('mynewpass4!');

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