第一步:下載
進入到mysql官網下載自己對應版本的mysql,
下載地址:https://dev.mysql.com/downloads/mysql/5.7.html#downloads
我這裏下載mysql-5.7.25-linux-glibc2.12-x86_64.tar.gz版本
也可以進入linux後用命令下載
wget https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.25-linux-glibc2.12-x86_64.tar.gz
第二步:環境配置
linux連接工具:SecureCRT 8.1.4
linux文件管理工具:WinSCP 5.14.4
linux系統版本: CentOS 7.3 64位
安裝源文件版本:mysql-5.7.25-linux-glibc2.12-x86_64.tar.gz
安裝前,我們可以檢測系統是否自帶安裝 MySQL:
rpm -qa | grep mysql
如有,類似
mysql-libs-5.1.52-1.el6_0.1.x86_64
那可以選擇進行卸載:
- rpm -e mysql-libs-5.1.52-1.el6_0.1.x86_64 // 普通刪除模式
- rpm -e --nodeps mysql-libs-5.1.52-1.el6_0.1.x86_64 // 強力刪除模式,如果使用上面命令刪除時,提示有依賴的其它文件,則用該命令可以對其進行強力刪除
檢查否存在 mariadb 數據庫,如有,卸載之,卸載同上
rpm -qa | grep mariadb
如有,類似
mariadb-libs-5.5.56-2.el7.x86_64
則 卸載
rpm -e --nodeps mariadb-libs-5.5.56-2.el7.x86_64
用WinSCP 5.14.4工具將下載的mysql-5.7.25-linux-glibc2.12-x86_64.tar.gz上傳到linux服務器的/opt/mysql目錄下面
第三步:安裝
進入安裝包所在目錄,解壓文件
- cd /opt/mysql
- tar -zxvf mysql-5.7.25-linux-glibc2.12-x86_64.tar.gz
重命名
mv mysql-5.7.25-linux-glibc2.12-x86_64 mysql-5.7.25
添加系統mysql組和mysql用戶
檢查mysql組和用戶是否存在,如無創建
- cat /etc/group | grep mysql
- #類似
- mysql:x:490:
- cat /etc/passwd | grep mysql
- #類似
- mysql:x:496:490::/home/mysql:/bin/bash
以上爲存在的情況,如無,執行添加命令:
- groupadd mysql
- useradd -r -g mysql mysql
-
- #useradd -r參數表示mysql用戶是系統用戶,不可用於登錄系統
安裝數據庫
創建data目錄
- cd mysql-5.7.25
- mkdir data
將/opt/mysql/mysql-5.7.25的所有者及所屬組改爲mysql
chown -R mysql.mysql /opt/mysql/mysql-5.7.25
在/opt/mysql/mysql-5.7.25/support-files目錄下創建my_default.cnf
- # For advice on how to change settings please see
- # http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html
- # *** DO NOT EDIT THIS FILE. It's a template which will be copied to the
- # *** default location during install, and will be replaced if you
- # *** upgrade to a newer version of MySQL.
-
-
- [mysqld]
- sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
-
- basedir = /opt/mysql/mysql-5.7.25
- datadir = /opt/mysql/mysql-5.7.25/data
- port = 3306
- socket = /tmp/mysql.sock
- character-set-server=utf8
-
- log-error = /opt/mysql/mysql-5.7.25/data/mysqld.log
- pid-file = /opt/mysql/mysql-5.7.25/data/mysqld.pid
拷貝,如果提示是否覆蓋,y
cp support-files/my_default.cnf /etc/my.cnf
初始化 mysqld
- cd /opt/mysql/mysql-5.7.25
- ./bin/mysqld --initialize --user=mysql --basedir=/opt/mysql/mysql-5.7.25/ --datadir=/opt/mysql/mysql-5.7.25/data/
初始化完成之後,查看日誌
/opt/mysql/mysql-5.7.25/data/mysqld.log
臨時密碼
2019-04-08T06:14:29.790033Z 1 [Note] A temporary password is generated for root@localhost: a8?DQir=T+k+
把啓動腳本放到開機初始化目錄
cp support-files/mysql.server /etc/init.d/mysql
啓動mysql服務
service mysql start
登錄mysql,密碼爲初始密碼
- cd /opt/mysql/mysql-5.7.25
- ./bin/mysql -u root -p
修改密碼
- mysql> set password=password('123456');
- mysql> grant all privileges on *.* to root@'%' identified by '123456';
- mysql> flush privileges;
添加遠程訪問權限
- mysql> use mysql;
- mysql> update user set host='%' where user = 'root';
- mysql> flush privileges;
重啓mysql生效
- service mysql stop
- service mysql start
或
service mysql restart