centos安装mysql5.7.21_Centos7安装mysql5.7.21

最新推荐文章于 2021-02-01 00:13:05 发布

青妍

最新推荐文章于 2021-02-01 00:13:05 发布

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文章标签： centos安装mysql5.7.21

本文链接：https://blog.youkuaiyun.com/weixin_32445049/article/details/113216196

本文介绍如何在CentOS系统上安装并配置MySQL 5.7，包括卸载旧版数据库、下载安装包、创建用户组、初始化数据库、设置开机启动等步骤。

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1、卸载系统自带的 MariaDB

[root@CentOS ~]# rpm -qa | grepmariadb

mariadb-libs-5.5.52-1.el7.x86_64

[root@CentOS~]# rpm -e --nodeps mariadb-libs-5.5.52-1.el7.x86_64

2、下载 mysql5.7.21 安装包

[root@CentOS local]# wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.21-linux-glibc2.12-x86_64.tar.gz

3、创建 mysql 用户组和 mysql 用户

[root@CentOS local]# useradd mysql

4、解压安装包，并将解压好的文件夹重命名为mysql

[root@CentOS local]# tar -zxvf mysql-5.7.21-linux-glibc2.12-x86_64.tar.gz

mysql-5.7.21-linux-glibc2.12-x86_64/bin/myisam_ftdump

mysql-5.7.21-linux-glibc2.12-x86_64/bin/myisamchk

mysql-5.7.21-linux-glibc2.12-x86_64/bin/myisamlog

mysql-5.7.21-linux-glibc2.12-x86_64/bin/myisampack

mysql-5.7.21-linux-glibc2.12-x86_64/bin/mysql

mysql-5.7.21-linux-glibc2.12-x86_64/bin/mysql_client_test_embedded

mysql-5.7.21-linux-glibc2.12-x86_64/bin/mysql_config_editor

mysql-5.7.21-linux-glibc2.12-x86_64/bin/mysql_embedded

mysql-5.7.21-linux-glibc2.12-x86_64/bin/mysql_install_db

mysql-5.7.21-linux-glibc2.12-x86_64/bin/mysql_plugin

......(略去内容).....

[root@CentOS local]#mv mysql-5.7.21-linux-glibc2.12-x86_64 mysql

5、将 mysql 添加为系统服务

[root@CentOS local]# cp mysql/support-files/mysql.server /etc/init.d/mysql

[root@CentOS local]# chkconfig--add mysql

6、初始化数据库

[root@CentOS mysql]# mkdirdata

[root@CentOS mysql]# ./bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data2018-02-24T11:03:47.265873Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for moredetails).2018-02-24T11:03:48.343129Z 0 [Warning] InnoDB: New log files created, LSN=45790

2018-02-24T11:03:48.473269Z 0[Warning] InnoDB: Creating foreign key constraint system tables.2018-02-24T11:03:48.541782Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 63b1ed0c-1952-11e8-aa97-000c29847b2d.2018-02-24T11:03:48.542867Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed'cannot be opened.2018-02-24T11:03:48.543383Z 1 [Note] A temporary password is generated for root@localhost: =u>yyVorV7g%[root@CentOS mysql]#

例如在 /usr/local/mysql 目录下创建用于保存数据的data 目录，初始化数据库后获得的临时密码为：=u>yyVorV7g%

7、启动mysql服务，使用临时密码登录mysql

[root@CentOS mysql]# systemctl start mysql # 使用 service mysql start 也可以

[root@CentOS mysql]#ps -ef | grepmysql

root4654 1 0 19:07 ? 00:00:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --datadir=/usr/local/mysql/data --pid-file=/usr/local/mysql/data/CentOS.pid

mysql4739 4654 4 19:07 ? 00:00:00 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=CentOS.err --pid-file=/usr/local/mysql/data/CentOS.pid

root4772 3618 0 19:07 pts/0 00:00:00 grep --color=auto mysql

[root@CentOS mysql]# ./bin/mysql -u root -p

Enter password: # 这里输入刚获取的临时密码

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

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 clearthe current input statement.

mysql>

8、修改登录密码

mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('123456'); # 将 root 登录密码修改为123456

Query OK,0 rows affected, 1 warning (0.00sec)