mysql安裝教程

一、下載mysql

打開 http://dev.mysql.com/downloads/mysql/ linux

選擇 linux - Generic,選擇對應的操做系統版本,sql

獲得mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz數據庫

二、傳資源vim

使用filezilla工具將壓縮包上傳linux,使用secureCRT鏈接linux並安裝。bash

1.解壓tar包ide

cd /software工具

tar -xzvf tar -xzvf mysql-5.7.19-linux-glibc2.12-x86_64.tar.gzui

mv tar -xzvf mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz  mysqlurl

2.添加用戶與組

groupadd mysql

useradd -r -g mysql mysql

chown -R mysql:mysql mysql

3.建立data目錄(很重要!)

mkdir /usr/local/mysql/data

5.初始化數據,記住初始化密碼

[root@localhost mysql] ./bin/mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data/

6.複製配置文件my-default.cnf、mysql.server到/etc

cp -a ./support-files/my-default.cnf /etc/my.cnf (選擇y) 

cp -a ./support-files/mysql.server /etc/init.d/mysqld

修改my.cnf文件    (vim /etc/my.cnf)

# These are commonly set, remove the # and set as required.  

basedir = /usr/local/mysql  

datadir = /usr/local/mysql/data

7.啓動mysql

service mysqld start

查看初始化自動生成的密碼:   cat /root/.mysql_secret  (記住並複製下來,等會登錄mysql須要)

進入mysql:bin/mysql -uroot -p  (把剛剛複製的密碼粘貼上來)

8.#登陸後重置root密碼
mysql> SET PASSWORD  FOR 'root'@localhost = PASSWORD('123456')

Query OK, 0 rows affected, 1 warning (0.00 sec)

9.#設置默認開機啓動

[root@localhost]# chkconfig --add mysqld

[root@localhost]# chkconfig --list mysqld

10.#設置遠程鏈接

進入數據庫

mysql> use mysql;

更改"mysql"數據庫裏的"user"表裏的"host"項,從"localhost"改稱"%"

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

ERROR 1062 (23000): Duplicate entry '%-root' for key 'PRIMARY' 不予理會

mysql> select host, user from user;

錯誤總結

2017-09-26 23:26:11 [WARNING] mysql_install_db is deprecated. Please consider switching to mysqld --initialize

2017-09-26 23:26:11 [ERROR]   Can't locate the server executable (mysqld).

用戶運行無權限

su: warning: cannot change directory to /home/grid: No such file or directory
-bash-4.1$

新建用戶有問題,先建組再建用戶

刪除用戶

userdel mysql

groupdel mysql

usermod –G mysql mysql

沒法刪除用戶,提示進程佔用時,主目錄運行如下命令

vipw  用dd刪除須要刪除的用戶

vipw -s 用dd刪除須要刪除的用戶

再新增用戶和組

groupadd mysql

useradd -r -g mysql mysql

chown -R mysql:mysql mysql

su: warning: cannot change directory to /home/mysql: Permission denied

-bash: /home/mysql/.bash_profile: Permission denied

用戶主目錄所屬不對,用root用戶運行一下命令

[root@localhost ~]# chown -R mysql:mysql /home/mysql/

[root@localhost ~]# chmod -R 755 /home/mysql/

1045-access denied for user 'root'@

mysql> GRANT ALL PRIVILEGES ON *.* TO 'root' @'%' IDENTIFIED BY 'root' WITH GRANT OPTION;

mysql> flush privileges;

 

長時間鏈接不上,而且沒反應,嘗試關閉linux防火牆

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