创建mysql服务器

最新推荐文章于 2025-04-18 09:11:08 发布

李金坤_jinkun

最新推荐文章于 2025-04-18 09:11:08 发布

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文章标签： mysql 数据库

本文链接：https://blog.youkuaiyun.com/zongshan_csdn/article/details/105939766

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创建mysql服务器

1.1要求：

在IP地址192.168.4.10主机上部署mysql服务
设置数据库管理员root本机登录密码为tarena

1.2 方案

克隆新的虚拟机：
eth0网卡:192.168.4.10
主机名称:host10
下载软件mysql-5.7.17.tar
关闭防火墙（如果有的话）
关闭SELinux（如果有的话）

1.3 步骤

实现此案例需要按照如下步骤进行。

》步骤一：准备工作

1）如果之前有mariadb，则需要先卸载，并删除对应的配置与数据：

[root@localhost ~]# systemctl stop mariadb
2）删除/etc/my.cnf配置文件

此配置文件由RHEL自带的mariadb-libs库提供：

[root@localhost ~]# rm -rf /etc/my.cnf

3）删除数据

[root@localhost ~]# rm -rf /var/lib/mysql/*
4）卸载软件包（没有会显示未安装软件包）

[root@localhost ~]# rpm -e --nodeps mariadb-server mariadb
警告：/var/log/mariadb/mariadb.log 已另存为/var/log/mariadb/mariadb.log.rpmsave

》步骤二：安装mysql软件包

1）解压mysql-5.7.17.tar 软件包

[root@host50 ~]# tar -xvf mysql-5.7.17.tar //解压mysql整合包
./mysql-community-client-5.7.17-1.el7.x86_64.rpm
./mysql-community-common-5.7.17-1.el7.x86_64.rpm
./mysql-community-devel-5.7.17-1.el7.x86_64.rpm
./mysql-community-embedded-5.7.17-1.el7.x86_64.rpm
./mysql-community-embedded-compat-5.7.17-1.el7.x86_64.rpm
./mysql-community-embedded-devel-5.7.17-1.el7.x86_64.rpm
./mysql-community-libs-5.7.17-1.el7.x86_64.rpm
./mysql-community-libs-compat-5.7.17-1.el7.x86_64.rpm
./mysql-community-minimal-debuginfo-5.7.17-1.el7.x86_64.rpm
./mysql-community-server-5.7.17-1.el7.x86_64.rpm
./mysql-community-test-5.7.17-1.el7.x86_64.rpm

2）安装MySQL软件包

[root@host50 ~]# yum -y install mysql-community-*.rpm //yum安装自动解决依赖
./mysql-community-client-5.7.17-1.el7.x86_64.rpm
./mysql-community-common-5.7.17-1.el7.x86_64.rpm
./mysql-community-devel-5.7.17-1.el7.x86_64.rpm
./mysql-community-embedded-5.7.17-1.el7.x86_64.rpm
./mysql-community-embedded-compat-5.7.17-1.el7.x86_64.rpm
./mysql-community-embedded-devel-5.7.17-1.el7.x86_64.rpm
./mysql-community-libs-5.7.17-1.el7.x86_64.rpm
./mysql-community-libs-compat-5.7.17-1.el7.x86_64.rpm
./mysql-community-minimal-debuginfo-5.7.17-1.el7.x86_64.rpm
./mysql-community-server-5.7.17-1.el7.x86_64.rpm
./mysql-community-test-5.7.17-1.el7.x86_64.rpm

3）启动MySQL数据库服务并设置开机自启

提示：第一次启动，需要初始化数据，会比较慢

[root@host50 ~]# systemctl start mysqld //启动mysql服务
[root@host50 ~]# systemctl enable mysqld //设置开机自启
[root@host50 ~]# systemctl status mysqld //查看mysql服务状态
● mysqld.service - MySQL Server
Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
Active: active (running) since 二 2018-08-28 10:03:24 CST; 8min ago
Docs: man:mysqld(8)
http://dev.mysql.com/doc/refman/en/using-systemd.html
Main PID: 4284 (mysqld)
CGroup: /system.slice/mysqld.service
└─4284 /usr/sbin/mysqld --daemonize --pid-file=/var/r…

8月 28 10:02:56 localhost.localdomain systemd[1]: Starting MySQ…
8月 28 10:03:24 localhost.localdomain systemd[1]: Started MySQL…
Hint: Some lines were ellipsized, use -l to show in full.

步骤三：连接MySQL服务器，修改密码

查看初始密码

[root@host50 ~]#grep –i ‘password’ /var/log/mysqld.log
2017-04-01T18:10:42.948679Z 1 [Note] A temporary password is generated for root@localhost: mtoa>Av<p6Yk //随机生成的管理密码为mtoa>Av<p6Yk
2）使用初始密码连接mysql服务

[root@host50 ~]# mysql -u root -p’mtoa>Av<p6Yk’ //初始密码登录，
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 11
Server version: 5.7.17

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> //登录成功后，进入SQL操作环境
3）重置数据库管理员roo本机登录密码

mysql> show databases;
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement //提示必须修改密码
mysql> alter user root@”localhost” identified by “123qqq…A”; //修改登陆密码
Query OK, 0 rows affected (0.00 sec)
mysql> exit //断开连接
[root@host50 ~]#
4）修改密码策略

[root@host50 ~]# mysql -uroot –p123qqq…A
mysql>
mysql>set global validate_password_policy=0; //只验证长度
Query OK, 0 rows affected (0.00 sec)
mysql>set global validate_password_length=6； //修改密码长度,默认值是8个字符
Query OK, 0 rows affected (0.00 sec)
mysql> alter user root@”localhost” identified by “tarena”; //修改登陆密码
Query OK, 0 rows affected (0.00 sec)
mysql>exit
5）使用修改后的密码登录

[root@host50 ~]# mysql -uroot -ptarena //登录
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 15
Server version: 5.7.17 MySQL Community Server (GPL)