【无标题】CentOS Linux 7.6安装Mysql8.0

CentOS Linux 7.6安装Mysql8.0

要求：

• 操作系统:CentOS 7.6 x86_64
• 数据库版本：mysql 8.0.39
• 字符集：utf8mb4
• 字符序：utf8mb4_general_ci，不区分大小写

 

环境准备

• 准备一台主机（ip：10.10.10.200 255.255.255.0）
• 安装CentOS Linux 7.6（桌面）
• 下载Mysql8.0并上传Mysql8.0至服务器

官网：https://dev.mysql.com/downloads

 

安装步骤：

1. 配置hosts文件

Plain Textecho "10.10.10.200 linux.test.com" >>/etc/hostscat /etc/hosts  vim /etc/hosts10.10.10.200 linux.test.com

卸载主机自带的mysql

Plain Text rpm -qa | grep mysqlrpm -e --nodeps *mysql*rpm -qa | grep mariadbrpm -e --nodeps mariadb*

安装mysql8.0

Plain Text

cd /mysql/

tar -xvf mysql-8.0.39-linux-glibc2.17-x86_64.tar

rm -f mysql-8.0.39-linux-glibc2.17-x86_64.tar

xz -d mysql-8.0.39-linux-glibc2.17-x86_64.tar.xz

tar -xvf mysql-8.0.39-linux-glibc2.17-x86_64.tar

mv mysql-8.0.39-linux-glibc2.17-x86_64 /usr/local/

mv /usr/local/mysql-8.0.39-linux-glibc2.17-x86_64  /usr/local/mysql

mkdir /var/lib/mysql

mkdir -p /usr/local/mysql/log

mkdir /usr/local/mysql/data

 

 

设置环境变量

vim ~/.bash_profile： PATH=$PATH:/usr/local/mysql/bin

 

验证：环境变量

[root@Linux ~]# which mysql

/usr/local/mysql/bin/mysql

 

创建mysql用户和组，目录授权

groupadd mysql

useradd -r -g mysql -s /bin/false mysql

chown -R mysql:mysql /usr/local/mysql

chown -R mysql:mysql /var/lib/mysql

 

配置参数文件

vim /etc/my.cnf

[mysql]

default-character-set=utf8mb4

socket=/var/lib/mysql/mysql.sock

[mysqld]

port = 3306

socket=/var/lib/mysql/mysql.sock

basedir=/usr/local/mysql

character-set-server=utf8mb4

default-storage-engine=INNODB

innodb_buffer_pool_size = 200M

max_allowed_packet=16M

explicit_defaults_for_timestamp=1

log-output=FILE

general_log = 0

general_log_file=/usr/local/mysql/log/Linux.test.com.err

slow_query_log = ON

slow_query_log_file=/usr/local/mysql/log/Linux.test.com-query.err

long_query_time=10

log-error=/usr/local/mysql/log/Linux.test.com-error.err

default-authentication-plugin=mysql_native_password

Mysql数据库初始化

usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data/

cd /usr/local/mysql/log

tail -100f Linux.test.com-error.err

 

配置CentOS linux启动和停止脚本

vim /usr/lib/systemd/system/mysqld.service

[Unit]

Description=MySQL Server

Documentation=man:mysqld(8)

Documentation=http://dev.mysql.com/doc/refman/en/using-systemd.html

After=network.target

After=syslog.target

[Install]

WantedBy=multi-user.target

[Service]

User=mysql

Group=mysql

ExecStart=/usr/local/mysql/bin/mysqld --defaults-file=/etc/my.cnf

LimitNOFILE = 65536

LimitNPROC = 65536

 

 

配置systemctl启动和停止方法

systemctl daemon-reload

systemctl stop mysqld

systemctl start mysqld

systemctl enable mysqld

systemctl status mysqld

 

 

修改root密码

 

alter user 'root'@'localhost' identified by 'abc..123';

grant all privileges on . to 'root'@'localhost' with grant option;

flush privileges;

 

设置允许root用户远程登录

mysql> create user 'root'@'10.10.10.%' identified by 'abc..123';

Query OK, 0 rows affected (0.00 sec)

mysql> grant all privileges on . to 'root'@'10.10.10.%' with grant option;

Query OK, 0 rows affected (0.01 sec)

mysql> flush privileges;

Query OK, 0 rows affected (0.00 sec)

 

配置hosts文件

echo "10.10.10.200 linux.test.com" >>/etc/hosts

cat /etc/hosts

vim /etc/hosts

10.10.10.200 linux.test.com

 

远程连接需要关闭防火墙

firewall-cmd --state

systemctl stop firewalld.service

systemctl disable firewalld.service