Linux MySQL8.0.12安装

1.下载官方打包好的二进制安装包：
#wget https://cdn.mysql.com//Downloads/MySQL-8.0/mysql-8.0.12-linux-glibc2.12-x86_64.tar.xz
可以看到这个版本采用了tar.xz的打包压缩方式，文件只有350M左右，下载还是满方便的。
# du -sh mysql-8.0.12-linux-glibc2.12-x86_64.tar.xz 
339M    mysql-8.0.12-linux-glibc2.12-x86_64.tar.xz
 
2.解压文件：
#tar -xJvf mysql-8.0.12-linux-glibc2.12-x86_64.tar.xz -C /usr/local/
# mv /usr/local/mysql-8.0.12-linux-glibc2.12-x86_64/ /usr/local/mysql
 
3.配置参数文件：
# cat /etc/my.cnf
[mysqld]
server-id                      = 1
port                           = 3306
mysqlx_port                    = 33060
mysqlx_socket                  = /tmp/mysqlx.sock
datadir                        = /data/mysql
socket                         = /tmp/mysql.sock
pid-file                       = /tmp/mysqld.pid
log-error                      = error.log
slow-query-log                 = 1
slow-query-log-file            = slow.log
long_query_time                = 0.2
log-bin                        = bin.log
relay-log                      = relay.log
binlog_format                 =ROW
relay_log_recovery            = 1
character-set-client-handshake = FALSE
character-set-server           = utf8mb4
collation-server               = utf8mb4_unicode_ci
init_connect                   ='SET NAMES utf8mb4'
innodb_buffer_pool_size        = 1G
join_buffer_size               = 128M
sort_buffer_size               = 2M
read_rnd_buffer_size           = 2M
log_timestamps                 = SYSTEM
lower_case_table_names         = 1
default-authentication-plugin  =mysql_native_password
 
4.创建目录授权等：
# groupadd mysql
# useradd mysql
# mkdir -p /data/mysql
# chown -R mysql:mysql /data/mysql/
# chmod -R 775 /data/mysql/
 
 
5.初始化数据库：
#/usr/local/mysql/bin/mysqld --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql --initialize-insecure
官方推荐使用--initialize，会在错误日志中生成难以输入的临时密码，我这里使用的免密码的方式。
 
# cat /data/mysql/error.log | grep -i password
2018-07-29T02:06:41.253856+08:00 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: wquR3-Kxlg1d
 
 
6.设置启动文件和环境变量：
#cp /usr/local/mysql/support-files/mysql.server  /etc/init.d/mysql
--启动数据库：
# /etc/init.d/mysql start
Starting MySQL.Logging to '/data/mysql/error.log'.
 SUCCESS! 
 
# vim /etc/profile.d/mysql.sh
# cat /etc/profile.d/mysql.sh 
export PATH=$PATH:/usr/local/mysql/bin
# source /etc/profile.d/mysql.sh 
# mysqld --version
mysqld  Ver 8.0.12 for linux-glibc2.12 on x86_64 (MySQL Community Server - GPL)
[root@node4 mysql]# /usr/local/mysql/bin/mysql -p -S /tmp/mysql.sock
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 7
Server version: 8.0.12 MySQL Community Server - GPL
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> select version();
+-----------+
| version() |
+-----------+
| 8.0.12    |
+-----------+
1 row in set (0.00 sec)
7.设置可以远程登录的账号：
mysql> show variables like '%valid%pass%';
Empty set (0.00 sec)
mysql> create user root@'%' identified by 'oracle';
ERROR 1290 (HY000): The MySQL server is running with the --skip-grant-tables option so it cannot execute this statement
mysql> show variables like '%valid%pass%';
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
mysql> alter user root@'localhost' identified by 'oracle';
Query OK, 0 rows affected (0.07 sec)
mysql> show variables like '%valid%pass%';
Empty set (0.01 sec)
--创建可以远程登录的用户：
mysql> create user root@'%' identified by 'oracle';
Query OK, 0 rows affected (0.06 sec)
mysql> grant all privileges on *.* to root@'%' with grant option;
Query OK, 0 rows affected (0.07 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
总结：
官方虽然提供RPM安装方式但是不少默认参数还是不太方便平常的使用，对生产而言则需要修改更多的地方，但是很适合初级用户快速安装使用；
而对二进制安装包 只需要下载按照自定义的设置安装即可 方便快捷 可自主配置，适合生产布署。

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