【mySQL-基础】mysql和navicat的安装及配置

1. 虚拟机安装

镜像源：https://mirrors.tuna.tsinghua.edu.cn/centos/7.9.2009/isos/x86_64/

• 设置虚拟机静态ip，设置windows vmnet8的子网掩码、网关
• 安装net-tools
• 安装sshd，开启sshd，关闭防火墙
• 安装wget
  

2. mysql安装 5.7.37版本

• 下载mysql： wget https://downloads.mysql.com/archives/get/p/23/file/mysql-5.7.37-1.el7.x86_64.rpm-bundle.tar
• 安装mysql
  • 解压 tar- xvf mysql-5.7.37-1.el7.x86_64.rpm-bundle.tar
  • rpm -ivh mysql-community-common-5.7.37-1.el7.x86_64.rpm
  • rpm -ivh mysql-community-libs-5.7.37-1.el7.x86_64.rpm
    • 查看mariadb：rpm -qa|grep mariadb
    • 卸载mariadb：rpm -e --nodeps mariadb-libs-5.5.68-1.el7.x86_64 # 注意是–
    • rpm -ivh --force --nodeps mysql-community-libs-5.7.37-1.el7.x86_64.rpm
    • rpm -ivh mysql-community-client-5.7.37-1.el7.x86_64.rpm
    • rpm -ivh --nodeps mysql-community-server-5.7.37-1.el7.x86_64.rpm
    • 其他插件
      • perl
      • net-tools

3. mysql配置

• 修改/etc/my.cnf

# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html

[mysqld]
skip-grant-tables # 去掉所有的校验，但是在部署的时候不要这样做
#
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
#
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
#
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock

# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

• 启动：systemctl start mysqld.service
• 运行客户端：mysql 设置用户名密码：root/123456

update mysql.user set authentication_string=password('123456') where user='root';
flush privileges;

• 关掉mysql服务systemctl stop mysqld.service 重新设置/etc/my.cnf，将skip-grant-tables去掉
• 重新启动mysql服务 systemctl start mysqld.service （设置开机自启动：systemctl enable mysqld.service）
• 登录：mysql -uroot -p123456
• 重新设置密码

set global validate_password_policy=LOW;
set global validate_password_length=4;
set password=password('123456');
grant all privileges on *.* to 'root'@'%' identified by '123456' with grant option; # 可以远程登--宿主机登录

• 重新进入：mysql -uroot -p123456

4. navicat安装 15版本

• 软件链接：software/navicat（需要的请私信我）
• ”安装“方法：https://blog.csdn.net/weixin_43914278/article/details/114692056
  • 卸载：首先卸载navicat，然后再注册表（windows+R）输入regedit，在\HKEY_CURRENT_USER\Software\PremiumSoft删除navicat所有文件
  • 安装（安装之前禁止网络）
    • 先安装navicat，一路next，最后安装好的时候注意不要打开navicat
    • 先打开"安装"软件Keygen ，点击Patch ，就会有提示XXX Crached，然后点击Generate
    • 到此打开navicat点击注册，navicat保证断网的前提下，选择手动激活，将刚刚生成的Serial Keygen输入到navicat里，将信息再填到"安装"文件中的Request Code中，在"安装"文件中点击Generate，将generate的信息输入到Navicat里就"安装"成功了