Centos rpm方式安装mysql5.7 详细

文章目录

1.下载mysql5.7的rpm安装包

https://downloads.mysql.com/archives/community/
在这里插入图片描述
只需下载最新版图示4个包就可以了

2.上传mysql安装包到centos的目录下

[root@cm1 mysql]# ll
总用量 205864
-rw-r--r--. 1 root root  26452496 10月  2 2020 mysql-community-client-5.7.30-1.el7.x86_64.rpm
-rw-r--r--. 1 root root    318688 10月  2 2020 mysql-community-common-5.7.30-1.el7.x86_64.rpm
-rw-r--r--. 1 root root   2459484 10月  2 2020 mysql-community-libs-5.7.30-1.el7.x86_64.rpm
-rw-r--r--. 1 root root 181564660 10月  2 2020 mysql-community-server-5.7.30-1.el7.x86_64.rpm

3.安装依赖

3.1 查看linux上是否已经安装了mysql,有则卸载。

一般centos7默认安装了mariadb,这里把它卸载。

查看：[root@cm1 bin]# rpm -qa|grep mariadb

卸载：[root@cm1 bin]# rpm -e --nodeps mariadb-libs-5.5.56-2.el7.x86_64

3.2 安装mysql5.7所需要的依赖

[root@cm1 ]# yum install libaio

[root@cm1 ]# yum install perl

[root@cm1 ]# yum install net-tools

4.安装mysql5.7

4.1 分别安装mysql5.7安装包

[root@cm1 ]# rpm -ivh mysql-community-common-5.7.30-1.el7.x86_64.rpm

[root@cm1 ]# rpm -ivh mysql-community-libs-5.7.30-1.el7.x86_64.rpm

[root@cm1 ]# rpm -ivh mysql-community-client-5.7.30-1.el7.x86_64.rpm

[root@cm1 ]# rpm -ivh mysql-community-server-5.7.30-1.el7.x86_64.rpm

4.2 查看mysql5.7的状态,没有启动则把mysql启动

[root@cm1 mysql]# systemctl status mysqld  #或者service mysqld status
● mysqld.service - MySQL Server
   Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: inactive (dead)
     Docs: man:mysqld(8)
           http://dev.mysql.com/doc/refman/en/using-systemd.html

启动mysql， active(running)代表启动成功

[root@cm1 mysql]# systemctl start mysqld
● mysqld.service - MySQL Server
   Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: active (running) since 四 2020-10-01 01:19:18 CST; 1min 10s ago
     Docs: man:mysqld(8)
           http://dev.mysql.com/doc/refman/en/using-systemd.html
  Process: 36299 ExecStart=/usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid $MYSQLD_OPTS (code=exited, status=0/SUCCESS)
  Process: 36245 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)
 Main PID: 36303 (mysqld)
   CGroup: /system.slice/mysqld.service
           └─36303 /usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid

4.3 修改密码
查看临时密码：

[root@cm1 mysql]# grep password /var/log/mysqld.log
2020-09-30T17:19:14.938108Z 1 [Note] A temporary password is generated for root@localhost: EC5?kvs)Es14

用临时密码登录mysql

[root@cm1 mysql]#  mysql -uroot -p'EC5?kvs)Es14'
mysql>

修改密码校验等级，如无必要，请跳过此步骤：

mysql> set global validate_password_policy=LOW;
Query OK, 0 rows affected (0.00 sec)

mysql> set global validate_password_length=6;
Query OK, 0 rows affected (0.00 sec)

修改成新的密码

mysql> set password = password("123456");

4.4 开启远程连接,允许远程连接数据库

mysql>  GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;

4.5 配置mysql的配置文件my.cnf(如无必要，请跳过此步骤) 打开配置文件my.cnf

[root@cm1 ]# vi /etc/my.cnf

在[mysqld]下面配置几行

lower_case_table_names=1       #配置表名不区分大小写 1：不区分大小写 0：区分大小写  这行必须配置 默认表名是区分大小写的，不利于开发

character-set-server=utf8          #设置为默认编码为utf8

init_connect='SET NAMES utf8'

max_connections=1024             #设置最大连接数

重启mysql 重启配置才能生效

[root@cm1 ]# systemctl restart mysqld

至此，安装完成。