centos環境下安裝mysql-8.0.12
安裝包請自行在官網下載
https://dev.mysql.com/downloads/mysql/
一：安裝相關依賴包
yum -y install gcc gcc-c++ ncurses-devel perl
二：環境配置
新增系統mysql組和mysql使用者：
groupadd mysql
useradd -r -g mysql -s /bin/false mysql
將mysql命令加進環境變數
開啟profile
vim /etc/profile
PATH=/tools/mysql-8.0.12-el7-x86_64/bin:$PATH
export PATH
讀取profile配置
source /etc/profile
三：安裝mysql
解壓安裝包
mysql目錄結構
| 目錄 | 目錄的內容 |
|---|---|
bin |
mysqld伺服器，客戶端和實用程式 |
docs |
資訊格式的MySQL手冊 |
man |
Unix手冊頁 |
include |
包含（標題）檔案 |
lib |
圖書館 |
share |
用於資料庫安裝的錯誤訊息，字典和SQL |
support-files |
其他支援檔案 |
修改當前目錄擁有者為mysql使用者：
chown -R mysql:mysql ./
配置mysql配置檔案
vim /etc/my.cnf
[client]
port=3306 # 設定mysql客戶端連線服務端時預設使用的埠
default-character-set=utf8
socket=/tools/mysql-8.0.12-el7-x86_64/data/mysql.sock
[mysqld]
basedir=/tools/mysql-8.0.12-el7-x86_64 # 設定mysql的安裝目錄
datadir=/tools/mysql-8.0.12-el7-x86_64/data
socket=/tools/mysql-8.0.12-el7-x86_64/data/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
# symbolic-links=0
#
# # Settings user and group are ignored when systemd is used.
# # If you need to run mysqld under a different user or group,
# # customize your systemd unit file for mariadb according to the
# # instructions in http://fedoraproject.org/wiki/Systemd
#
# [mysqld_safe]
# log-error=/data/log/mysql-log/error.log
# pid-file=/data/soft/mysql-8.0.12-el7-x86_64/data/mysql.pid
#
# #
# # include all files from the config directory
# #
# !includedir /etc/my.cnf.d
初始化資料目錄，包括mysql包含初始MySQL授權表的 資料庫，該表確定如何允許使用者連線到伺服器
bin/mysqld
--initialize -insecure --user=mysql (不設定密碼)
複製啟動指令碼
cp support-files/mysql.server /etc/init.d/mysql
啟動資料庫
/etc/init.d/mysql start
修改root密碼
進入mysql
mysql -u root -p
ALTER USER 'root'@'localhost' IDENTIFIED BY 'passowrd' ;
ALTER USER 'root'@'%' IDENTIFIED BY 'passowrd' ;
flush privileges;
MySQL8.0的使用者授權和之前有所區別，老版本的常用授權語句在8.0中會報錯：
MySQL8.0之前版本：
GRANT ALL ON *.* TO `wangwei`@`127.0.0.1` IDENTIFIED BY 'passowrd' WITH GRANT OPTION;
MySQL8.0版本：
CREATE USER `wangwei`@`127.0.0.1` IDENTIFIED BY 'passowrd';
GRANT ALL ON *.* TO `wangwei`@`127.0.0.1` WITH GRANT OPTION;