Centos安装Mysql – 笔记Blog

Mysql安装报错：GPG Keys are configured as: file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

下载 mysql 源安装包。
wget http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm
安装 mysql 源。
yum localinstall mysql57-community-release-el7-8.noarch.rpm
检查 mysql 源是否安装成功
yum repolist enabled | grep "mysql.*-community.*"
输入以下指令，安装 MySQL。
yum install mysql-community-server
启动 MySQL 服务。
systemctl start mysqld
查看 MySQL 启动状态。
systemctl status mysqld
输入以下指令，配置 Mysql 开机启动。
systemctl enable mysqld 
systemctl daemon-reload

查看root 并记录默认密码，用于后续登陆
grep 'temporary password' /var/log/mysqld.log
登录 MySQL。
mysql -u root -p

修改 MySQL root 的密码
ALTER USER 'root'@'localhost' IDENTIFIED BY 'Password';

mysql>界面输入以下命令新建同步账户：
create user 'copy'@'172.16.%' identified by 'huawei@123';
mysql>界面输入以下命令为同步账户授予复制权限：
grant replication slave on *.* to 'copy'@'172.16.%' identified by 'Password';

设置允许root所有访问：

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'Password' WITH GRANT OPTION;

开启远程控制 ：
update user set host='%' where user='用户名';

取消远程控制：
update user set host='localhost' where user='用户名';

删除用户 ：
delete from user where user="用户名" and host='host权限（localhost/%）';

设置显示某一个数据库的权限：
grant all on 数据库名.* to 用户名;

若没有马上生效，则输入 ：
flush privileges;

查看MYSQL数据库中所有用户权限

SELECT DISTINCT CONCAT('User: ''',user,'''@''',host,''';') AS query FROM mysql.user;

本地编译安装

卸载默认源mariadb
yum -y remove mariadb*
下载安装包
wget https://hciecloud.obs.cn-north-4.myhuaweicloud.com/MySQL-5.6.45-1.el6.x86_64.rpm-bundle.tar
mkdir mysql_install
tar -xvf MySQL-5.6.45-1.el6.x86_64.rpm-bundle.tar -C mysql_install
cd mysql_install

yum install -y MySQL-*.rpm
yum install -y MySQL-shared-compat-5.6.45-1.el6.x86_64.rpm 
yum install -y MySQL-server-5.6.45-1.el6.x86_64.rpm 
yum install -y MySQL-client-5.6.45-1.el6.x86_64.rpm 
yum install -y MySQL-devel-5.6.45-1.el6.x86_64.rpm 
yum install -y MySQL-shared-5.6.45-1.el6.x86_64.rpm

启动mysql
systemctl start mysql

查询root默认密码
cat /root/.mysql_secret

my.cnf文件

[mysqld]
join_buffer_size = 128M 
sort_buffer_size = 2M 
read_rnd_buffer_size = 2M 
datadir=/var/lib/mysql 
socket=/var/lib/mysql/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
lower_case_table_names = 1
innodb_strict_mode = 1  
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES 
symbolic-links=0 
character_set_server = utf8 
log-bin = mysql-bin
binlog_format=row
#####主库 从库id不能一样######
server-id = 2
#####主库 从库id不能一样######
expire_logs_days = 10
slave_skip_errors = 1062
log_slave_updates = 1
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

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