Linux下安装MySQL数据库

Posted 2020-11-05 在谷歌上百度

在我百撕不得其姐情况下,百度到了一篇亲测有用的文章,如下:

1.这里我将mysql安装在/usr/local/mysql目录里面，也可以安装在其他地方;

mkdir /usr/local/mysql

2.下载MySQL压缩包

wget http://dev.MySQL.com/get/Downloads/MySQL-5.7/mysql-5.7.11-Linux-glibc2.5-x86_64.tar.gz 

// 如果上边的命令不行的话 可以使用下边的命令
curl -O -L http://dev.MySQL.com/get/Downloads/MySQL-5.7/mysql-5.7.11-Linux-glibc2.5-x86_64.tar.gz 

3.解压并复制

tar -xvf mysql-5.7.11-Linux-glibc2.5-x86_64.tar.gz
mv mysql-5.7.11-linux-glibc2.5-x86_64/* /usr/local/mysql/

4.创建data目录

mkdir /usr/local/mysql/data

5.创建mysql用户组及其用户

groupadd mysql
useradd -r -g mysql mysql

6.初始化数据

[[email protected] mysql] ./bin/mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data/
2016-01-20 02:47:35 [WARNING] mysql_install_db is deprecated. Please consider switching to mysqld --initialize
2016-01-20 02:47:45 [WARNING] The bootstrap log isn‘t empty:
2016-01-20 02:47:45 [WARNING] 2016-01-19T18:47:36.732678Z 0 [Warning] --bootstrap is deprecated. Please consider using --initialize instead
2016-01-19T18:47:36.750527Z 0 [Warning] Changed limits: max_open_files: 1024 (requested 5000)
2016-01-19T18:47:36.750560Z 0 [Warning] Changed limits: table_open_cache: 431 (requested 2000

7.复制配置文件到 /etc/my.cnf

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

8.MySQL的服务脚本放到系统服务中

cp -a ./support-files/mysql.server /etc/init.d/mysqld
修改my.cnf文件
# These are commonly set, remove the # and set as required.
basedir = /usr/local/mysql
datadir = /usr/local/mysql/data
port = 3306
# server_id = .....
socket = /tmp/mysql.sock
character-set-server = utf8
# 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 

9.创建In

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

10.启动服务

service mysqld start 

11.初始化密码

mysql5.7会生成一个初始化密码，在root中.mysql_secret文件中。
[[email protected] ~]# cat /root/.mysql_secret
# Password set for user ‘[email protected]‘ at 2017-03-16 00:52:34 
ws;fmT7yh0CM

12.登录并修改密码

[[email protected] ~]# mysql -u root -p

alter user [email protected] identified by ‘root‘;

flush privileges;

13.退出重新登录，完成

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
4 rows in set (0.11 sec)

ok了