mysql 8.0.18 安装配置方法图文教程(linux)

本文记录了linux mysql 8.0.18 安装配置图文教程，供大家参考，具体内容如下

1、官网安装包下载地址

2、我这里通过xftp将安装包上传至Linux服务器

mysql 8.0.18 安装配置方法图文教程(linux)

3.解压

解压命令：tar -xvf mysql-8.0.18-linux-glibc2.12-x86_64.tar

mysql 8.0.18 安装配置方法图文教程(linux)

继续解压需要的那一个

命令： tar -xvf mysql-8.0.18-linux-glibc2.12-x86_64.tar.xz

mysql 8.0.18 安装配置方法图文教程(linux)

重命名并移动到合适的路径

重命名： mv mysql-8.0.18-linux-glibc2.12-x86_64 mysql

移动：

mysql 8.0.18 安装配置方法图文教程(linux)

4.在/usr/local/mysql下创建data文件夹

1	`# mkdir data`

mysql 8.0.18 安装配置方法图文教程(linux)

5.初始化数据库，自动生成密码需记录等下要用

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

ps：中间遇到一个坑，初始化数据库时候报了错

具体错误为：bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory

解决方法为：yum install libaio-devel.x86_64 原因是缺少了libaio这个东西安装就完事了

再次执行初始化命令

mysql 8.0.18 安装配置方法图文教程(linux)

得到初始化密码，需要记下，一会会用到

6.修改/usr/local/mysql 当前目录的用户

1 2	`# chown -R root:root ./` `# chown -R mysql:mysql data`

7.复制my-default.cnf这个文件到etc/my.cnf去

具体命令为：

									# cd support-files/

									# touch my-default.cnf

									# chmod 777 ./my-default.cnf 

									# cd ../

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

8.完了之后配置my.cnf

1	`vim /etc/my.cnf`

内容：

									[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/mysql

									datadir = /usr/local/mysql/data

									socket = /tmp/mysql.sock

									log-error = /usr/local/mysql/data/error.log

									pid-file = /usr/local/mysql/data/mysql.pid

									tmpdir = /tmp

									port = 5186

									#lower_case_table_names = 1

									# server_id = .....

									# socket = .....

									#lower_case_table_names = 1

									max_allowed_packet=32M

									default-authentication-plugin = mysql_native_password

									#lower_case_file_system = on

									#lower_case_table_names = 1

									log_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

9.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

10.注册服务

1	`# chkconfig` `--add mysql`

mysql 8.0.18 安装配置方法图文教程(linux)

11.查看是否成功

mysql 8.0.18 安装配置方法图文教程(linux)

12.etc/ld.so.conf要配置路径，不然报错

1	`# vim /etc/ld.so.conf`

添加如下内容:

1	`/usr/local/mysql/lib`

13.配置环境变量

1 2	`# vim /etc/profile` `# source /etc/profile`

添加如下内容：

1 2	`#MYSQL ENVIRONMENT` `export PATH=$PATH:/usr/local/mysql/bin:/usr/local/mysql/lib`

14.登录需要用到上面的生成的密码

									#启动mysql服务

									[root@localhost bin]# service mysql start

									Starting 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>