//下载 mysql-8.0.13-linux-glibc2.12-x86_64.tar.xz
[root@root ~]# wget https://cdn.mysql.com//Downloads/MySQL-8.0/mysql-8.0.13-linux-glibc2.12-x86_64.tar.xz
wget https://cdn.mysql.com//Downloads/MySQL-8.0/mysql-8.0.16-linux-glibc2.12-x86_64.tar.xz
//解压mysql
[root@root ~]# tar -xJvf mysql-8.0.13-linux-glibc2.12-x86_64.tar.xz
……
mysql-8.0.13-linux-glibc2.12-x86_64/bin/myisamchk
mysql-8.0.13-linux-glibc2.12-x86_64/bin/myisamlog
mysql-8.0.13-linux-glibc2.12-x86_64/bin/myisampack
…… //解压完成
//重命名mysql-8.0.13-linux-glibc2.12-x86_64文件夹为mysql
[root@root ~]# mv mysql-8.0.13-linux-glibc2.12-x86_64 mysql
//将mysql移到/usr/local/ 目录下
[root@root ~]# mv /root/mysql /usr/local/
mv：是否覆盖"/usr/local/mysql"？ y
//添加mysql用户组及MySQL用户
[root@root ~]# groupadd mysql
[root@root ~]# useradd -r -g mysql mysql
//设置/usr/local/mysql/文件夹的用户权限
[root@root ~]# cd /usr/local/mysql/
[root@root mysql]# chown -R mysql:mysql ./
//新建MySQL数据存储文件夹
[root@root mysql]# mkdir data
//初始化mysql数据库，生成默认密码
[root@root mysql]# bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data/
2018-12-22T05:24:39.603264Z 0 [Warning] [MY-011070] [Server] 'Disablining --skip-symbolic-links (or equivalent) is the default. Consider notas it' is deprecated and will be removed in a future release.
2018-12-22T05:24:39.603444Z 0 [System] [MY-013169] [Server] /usr/localmysqld 8.0.13) initializing of server in progress as process 27519
2018-12-22T05:24:41.891360Z 5 [Note] [MY-010454] [Server] A temporary ed for root@localhost: ePrOX&p>L52# //这是初始默认密码
2018-12-22T05:24:43.475923Z 0 [System] [MY-013170] [Server] /usr/localmysqld 8.0.13) initializing of server has completed
[Server] A temporary password is generated for root@localhost: lqs-.d,fN1pB
[root@iZwz9ijcs0cia5xad0sewhZ mysql]# bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data/
2019-07-01T08:42:30.346859Z 0 [System] [MY-013169] [Server] /usr/local/mysql/bin/mysqld (mysqld 8.0.16) initializing of server in progress as process 15888
2019-07-01T08:42:33.616199Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: lqs-.d,fN1pB
2019-07-01T08:42:35.006735Z 0 [System] [MY-013170] [Server] /usr/local/mysql/bin/mysqld (mysqld 8.0.16) initializing of server has completed
//设置数据库存储文件夹的用户权限
[root@root mysql]# chown -R root:root ./
[root@root mysql]# chown -R mysql:mysql data
//修改etc/my.cnf配置文件
[root@root ~]# vim /etc/my.cnf
//修改为以下内容：
[mysqld]
server-id = 1
port = 3306
bind-address = 0.0.0.0
max_connections = 5000
mysqlx_port = 33060
mysqlx_socket = /tmp/mysqlx.sock
basedir = /usr/local/mysql
datadir = /usr/local/mysql/data
socket = /tmp/mysql.sock
pid-file = /tmp/mysqld.pid
slow_query_log = ON
slow_query_log_file = /usr/local/mysql/logs/slow.log
log-error = /usr/local/mysql/logs/error.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
保存退出。
[root@root mysql]# chmod 777 /etc/my.cnf
//设置开机自启动
[root@root mysql]# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql
[root@root mysql]# chmod +x /etc/init.d/mysql
//注册查看服务
[root@root mysql]# chkconfig --add mysql
[root@root mysql]# chkconfig --list mysql
mysql 0:关闭 1:关闭 2:启用 3:启用 4:启用 5:启用 6:关闭
// /etc/ld.so.conf 这个文件记录了编译时使用的动态链接库的路径，告诉链接器去哪个路径下寻找链接时需要用到的库，如果找不到，就会提示链接错误。
如果我们安装了第三方的库，而没有将它放在链接器可以找到的目录，则运行使用这些第三方库的程序时，会提示找不到库。
[root@root mysql]# vim /etc/ld.so.cnf
添加如下内容：
include ld.so.conf.d/*.conf
/usr/local/mysql/lib
//配置环境变量
[root@root mysql]# vim /etc/profile
添加如下内容：
export PATH=$PATH:/usr/local/mysql/bin:/usr/local/mysql/lib
//让配置文件立马生效
[root@root mysql]# source /etc/profile
//启动MySQL服务
[root@root mysql]# service mysql start
//使用生成的密码登陆MySQL数据库
[root@root mysql]# mysql -u root -p
mysql: [Warning] World-writable config file '/etc/my.cnf' is ignored.
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 8.0.13
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.
//修改密码
mysql> alter user 'root'@'localhost' identified by '123456';
Query OK, 0 rows affected (0.13 sec)
mysql> exit
Bye
//退出重登录mysql
[root@root mysql]# mysql -u root -p
mysql: [Warning] World-writable config file '/etc/my.cnf' is ignored.
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 9
Server version: 8.0.13 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> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
4 rows in set (0.01 sec)
到此安装完成！
这里设置的 /etc/my.cnf 权限是777 ，就是任何人都可读可写，my.cnf 会被忽略掉，mysql的安全机制，也可以不要my.cnf配置文件。
下面设置一下MySQL的远程访问
简单写一下命令，自己写的时候忘了记录，网上也是一大堆。
登陆mysql
mysql -u root -p
use mysql;
select host,user from user;
CREATE USER 'root'@'%' IDENTIFIED BY '123456';
GRANT ALL ON *.* TO 'root'@'%';
flush privileges;
ALTER USER 'root'@'%' IDENTIFIED BY '123456' PASSWORD EXPIRE NEVER;
ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '123456';
FLUSH PRIVILEGES;
下面一定要记得关闭防火墙
service iptables stop
设置防火墙开机不启动
chkconfig iptables off
然后关机重启，连接试一试吧！
注意事项：
如果出现以下报错信息：
# [mysql初始化时报错bin/mysqld: error while loading shared libraries: libnuma.so.1: cannot open shared object file: No such file or directory的处理](https://www.cnblogs.com/chuanzhang053/p/9474797.html)
[mysql初始化时报错bin/mysqld: error while loading shared libraries: libnuma.so.1: 安装mysql
那么执行下：
[root@testvm01 mysql]# yum -y install numactl
...
[root@testvm01 mysql]# bin/mysqld --initialize --user=mysql
