Mysql8.0安装

Linux安装mysql8.0.13步骤（转）

1.下载mysql-8.0.13-linux-glibc2.12-x86_64.tar.xz的安装包

2.解压mysql-8.0.13-linux-glibc2.12-x86_64.tar.xz

# tar -xvf mysql-8.0.13-linux-glibc2.12-x86_64.tar.xz

3.将解压的文件重命名mysql，并移动到/usr/local目录下

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# mv mysql-8.0.13-linux-glibc2.12-x86_64 mysql# mv mysql /usr/local/

4.进入到/usr/local目录下，创建用户和用户组并授权

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# cd /usr/local/# groupadd mysql# useradd -r -g mysql mysql# cd mysql/ #注意：进入mysql文件下授权所有的文件# chown -R mysql:mysql ./  #passwd mysql   #修改mysql用户密码

5.再/usr/local/mysql目录下，创建data文件夹

 # mkdir data

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6.初始化数据库，并会自动生成随机密码，记下等下登陆要用

# bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data

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7.修改/usr/local/mysql当前目录得用户

# chown -R root:root ./# chown -R mysql:mysql data

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8.# cp support-files/my-default.cnf /etc/my.cnf

复制过去，其实也就是空白页，一开始没有my-default.cnf这个文件，可以用# touch my-default.cnf命令创建一个，并配置权限

chmod 777 ./my-default.cnf

ln -s /usr/local/mysql/bin/mysql /usr/bin

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# cd support-files/# touch my-default.cnf# chmod 777 ./my-default.cnf # cd ../# cp support-files/my-default.cnf /etc/my.cnf 

9.配置my.cnf

# vim /etc/my.cnf 

[mysqld] # 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 # These are commonly set, remove the # and set as required.basedir = /usr/local/mysqldatadir = /usr/local/mysql/datasocket = /tmp/mysql.socklog-error = /usr/local/mysql/data/error.logpid-file = /usr/local/mysql/data/mysql.pidtmpdir = /tmpport = 5186#lower_case_table_names = 1# server_id = .....# socket = .....#lower_case_table_names = 1max_allowed_packet=32Mdefault-authentication-plugin = mysql_native_password#lower_case_file_system = on#lower_case_table_names = 1log_bin_trust_function_creators = ON# 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  sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

如果后期mysql运行报错，可以直接到log-error = /usr/local/mysql/data/error.log目录下直接查看错误日志

命令:cat /usr/local/mysql/data/error.log

10.开机自启，进入/usr/local/mysql/support-files进行设置

# cd support-files/# cp mysql.server /etc/init.d/mysql # chmod +x /etc/init.d/mysql

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11.注册服务

# chkconfig --add mysql

如果命令没有，在需要处理chkconfig

# rpm -aq |grep chkconfig# export PATH=/sbin:$PATH# chkconfig# echo $PATH# PATH="$PATH":/sbin# echo $PATH

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12.查看是否成功

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13.etc/ld.so.conf要配置路径，不然报错

# vim /etc/ld.so.conf 添加如下内容:/usr/local/mysql/lib

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14.配置环境变量

# vim /etc/profile# source /etc/profile 添加如下内容：#MYSQL ENVIRONMENTexport PATH=$PATH:/usr/local/mysql/bin:/usr/local/mysql/lib

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15.登陆，这里输入上面第6步随机生成得密码，细心点输入，没有显示的，登陆成功如图所示

#启动mysql服务
[root@localhost bin]# service mysql startStarting MySQL.Logging to '/usr/local/mysql/data/error.log'... SUCCESS! 
[root@localhost bin]#   
 #修改mysql密码
mysql> alter user 'root'@'localhost' identified by '123456';Query OK, 0 rows affected (0.02 sec)
mysql> 

使用mysql 数据库

mysql > use mysql;

特定用户的host 修改

mysql > update user set host='%' where user='root';

指定用户的授权

mysql > grant all privileges on test.* to root@'%'

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16.开启Navicat远程连接

# mysql -uroot -p #进入数据库> use mysql;#进入数据库> select host, user, authentication_string, plugin from user;#查看用户信息> GRANT ALL ON *.* TO 'root'@'%';#授权root用户可以远程登陆> flush privileges;#立即生效> ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'Kuaigui2019!';#修改root用户密码> FLUSH PRIVILEGES;#立即生效> exit;#退出# service mysql restart#重启mysql服务

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17.navicat连接成功

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