centos7 mysql8.0_centos7.7 安装 mysql8.0.20

1. 下载安装包

2. 卸载主机自带的mysql或mariadb

[root@liandoyun ~]# rpm -qa|grep mysql

[root@liandoyun ~]# rpm -qa|grep mariadb

mariadb-libs-5.5.64-1.el7.x86_64

[root@liandoyun ~]# rpm -e --nodeps mariadb-libs-5.5.64-1.el7.x86_64

3.  安装mysql8.0.20

上传安装包至/softbak，解压到/usr/local/

[root@liandoyun ~]# mkdir /softbak

[root@liandoyun ~]# cd /softbak/

[root@liandoyun softbak]# ls

mysql-8.0.20-el7-x86_64.tar.gz

[root@liandoyun softbak]# tar -xzvf mysql-8.0.20-el7-x86_64.tar.gz -C /usr/local/

。。。

[root@liandoyun softbak]# cd /usr/local/

[root@liandoyun local]# ls

bin etc games include lib lib64 libexec mysql-8.0.20-el7-x86_64 sbin share src

[root@liandoyun local]# mv mysql-8.0.20-el7-x86_64/ mysql/

创建mysql用户和组

[root@liandoyun mysql]# groupadd mysql

[root@liandoyun mysql]# useradd -r -g mysql -s /bin/false mysql

[root@liandoyun mysql]# chown -R mysql:mysql /usr/local/mysql

[root@liandoyun mysql]# chown -R mysql:mysql /var/lib/mysql

创建目录并授权

[root@liandoyun mysql]# mkdir /var/lib/mysql

[root@liandoyun mysql]# mkdir /usr/local/mysql/log

[root@liandoyun mysql]# mkdir /usr/local/mysql/data

[root@liandoyun mysql]# chown -R mysql:mysql /usr/local/mysql

[root@liandoyun mysql]# chown -R mysql:mysql /var/lib/mysql

添加环境变量

[root@liandoyun mysql]# vim ~/.bash_profile

PATH=$PATH:$HOME/bin:/usr/local/mysql/bin

[root@liandoyun ~]# source ~/.bash_profile

配置参数文件

[root@liandoyun mysql]# 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/liandodb_general.err

slow_query_log = ON

slow_query_log_file=/usr/local/mysql/log/liandodb_query.err

long_query_time=10

log-error=/usr/local/mysql/log/liandodb_error.err

default-authentication-plugin=mysql_native_password

数据库初始化

[root@liandoyun mysql]# /usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data/

查看初始化日志

[root@liandoyun mysql]# cd /usr/local/mysql/log/

[root@liandoyun log]# ls

liandodb_error.err liandodb_query.err

[root@liandoyun log]# more liandodb_error.err

2020-05-15T03:09:59.555661Z 0 [System] [MY-013169] [Server] /usr/local/mysql/bin/mysqld (mysqld 8.0.20) initializing of server in progress as process

1834

2020-05-15T03:09:59.623225Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.

2020-05-15T03:10:03.164817Z 1 [System] [MY-013577] [InnoDB] InnoDB initialization has ended.

2020-05-15T03:10:08.144133Z 6 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: txu2t6_EGBH:

配置mysql服务

[root@liandoyun data]# 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

[root@liandoyun data]# systemctl daemon-reload

测试服务

[root@liandoyun ~]# systemctl stop mysqld

[root@liandoyun ~]# systemctl start mysqld

[root@liandoyun ~]#

[root@liandoyun ~]# ps -ef | grep mysqld

mysql 3986 1 4 11:37 ? 00:00:01 /usr/local/mysql/bin/mysqld --defaults-file=/etc/my.cnf

设置开机启动

[root@liandoyun ~]# systemctl enable mysqld

Created symlink from /etc/systemd/system/multi-user.target.wants/mysqld.service to /usr/lib/systemd/system/mysqld.service.

查看服务状态

[root@liandoyun ~]# systemctl status mysqld

?.mysqld.service - MySQL Server

Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)

Active: active (running) since Fri 2020-05-15 11:37:42 CST; 2min 1s ago

Docs: man:mysqld(8)

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

Main PID: 3986 (mysqld)

CGroup: /system.slice/mysqld.service

?..3986 /usr/local/mysql/bin/mysqld --defaults-file=/etc/my.cnf

May 15 11:37:42 liandoyun systemd[1]: Started MySQL Server.

手动启停命令：

启动：

nohup /usr/local/mysql/bin/mysqld_safe --defaults-file=/etc/my.cnf &

停止：

mysqladmin -uroot -p shutdown -S /var/lib/mysql/mysql.sock

4.修改root口令

[root@liandoyun ~]# mysql -u root -p

Enter password:

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 8

Server version: 8.0.20

Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> use mysql;

ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.

mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'root';

Query OK, 0 rows affected (0.04 sec)

mysql>flush privileges;

Query OK, 0 rows affected (0.07 sec)

5.设置root远程登录

mysql> use mysql;

Reading table information for completion of table and column names

You can turn off this feature to get a quicker startup with -A

Database changed

mysql> select host,user from user where user='root';

+-----------+------+

| host | user |

+-----------+------+

| localhost | root |

+-----------+------+

1 row in set (0.00 sec)

mysql> create USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'root';

Query OK, 0 rows affected (0.03 sec)

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

Query OK, 0 rows affected (0.06 sec)

mysql> flush privileges;

Query OK, 0 rows affected (0.01 sec)

测试远程登陆：

[root@liandoyun ~]# mysql -h 10.0.3.116 -u root -p

Enter password:

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 10

Server version: 8.0.20 MySQL Community Server - GPL

Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

标签：20,local,liandoyun,mysql8.0,usr,mysql,mysqld,root,centos7.7

来源： https://www.cnblogs.com/wenshuifan/p/12887006.html