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MySQL 8.0.11以及GA了，现在开始从MySQL 5.7进入8的时代了。看到官网介绍的很多新特性，感觉安装一个数据库开始学习吧
1、卸载mysql老版本
rpm -qa|grep mysql
rpm -e qt-mysql-4.6.2-28.el6_5.x86_64
rpm -e dovecot-mysql-2.0.9-22.el6.x86_64
rpm -e mysql-connector-odbc-5.1.5r1144-7.el6.x86_64
rpm -e mysql-devel-5.1.73-7.el6.x86_64
rpm -e mysql-server-5.1.73-7.el6.x86_64
rpm -e --nodeps mysql-server-5.1.73-7.el6.x86_64
rpm -e mysql-5.1.73-7.el6.x86_64
rpm -e --nodeps qt-mysql-4.6.2-28.el6_5.x86_64
rpm -e --nodeps mysql-libs-5.1.73-7.el6.x86_64
2、安装依赖包
yum install gcc gcc-c++ libaio
3、下载软件包并解压
tar -zxf mysql-8.0.11-linux-glibc2.12-x86_64.tar.gz -C /opt/mysql
4、创建软连接
cd /usr/local/
ln -sv /opt/mysql/mysql-8.0.11-linux-glibc2.12-x86_64 mysql
5、创建用户和组
groupadd -g 301 mysql
useradd -g 301 -r -s /bin/nologin -u 301 mysql
6、相关目录结构和权限
chown -R mysql:mysql /usr/local/mysql
mkdir -p /data
mkdir -p /data/mysql/data
mkdir -p /data/mysql/log/binlogs
mkdir -p /data/mysql/log/slowlogs
mkdir -p /data/mysql/log/relaylogs
mkdir -p /data/mysql/undo
mkdir -p /data/mysql/redologs
mkdir -p /data/mysql/tmp
chown -R mysql:mysql/data/mysql
7、环境变量配置
echo "export PATH=$PATH:/usr/local/mysql/bin" >> /etc/profile
source /etc/profile
8、添加启动服务
cp support-files/mysql.server /etc/init.d/mysqld
9、my.cnf配置
略
10、初始化数据库：
两种方式
bin/mysqld --initialize --user=mysql
bin/mysqld --initialize-insecure --user=mysql
我这里采用非认证加密方式
[root@dbwatcher mysql]# bin/mysqld --initialize-insecure --user=mysql
[root@dbwatcher mysql]# more /data/mysql/logs/mysql-error.log
2018-05-04T07:10:50.265003Z 0 [Warning] [MY-011068] [Server] The syntax 'expire-logs-days' is deprecated and will be removed in a future release. Please use
binlog_expire_logs_seconds instead.
2018-05-04T07:10:50.265211Z 0 [System] [MY-013169] [Server] /opt/mysql/mysql-8.0.11-linux-glibc2.12-x86_64/bin/mysqld (mysqld 8.0.11) initializing of server
in progress as process 28501
100
100 200
100 200
100 200
2018-05-04T07:10:58.852234Z 5 [Warning] [MY-010453] [Server] root@localhost is created with an empty password ! Please consider switching off the --initializ
e-insecure option.
2018-05-04T07:11:00.109123Z 5 [Warning] [MY-010315] [Server] 'user' entry 'mysql.infoschema@localhost' ignored in --skip-name-resolve mode.
2018-05-04T07:11:00.109181Z 5 [Warning] [MY-010315] [Server] 'user' entry 'mysql.session@localhost' ignored in --skip-name-resolve mode.
2018-05-04T07:11:00.109228Z 5 [Warning] [MY-010315] [Server] 'user' entry 'mysql.sys@localhost' ignored in --skip-name-resolve mode.
2018-05-04T07:11:00.109272Z 5 [Warning] [MY-010315] [Server] 'user' entry 'root@localhost' ignored in --skip-name-resolve mode.
2018-05-04T07:11:00.109305Z 5 [Warning] [MY-010323] [Server] 'db' entry 'performance_schema mysql.session@localhost' ignored in --skip-name-resolve mode.
2018-05-04T07:11:00.109330Z 5 [Warning] [MY-010323] [Server] 'db' entry 'sys mysql.sys@localhost' ignored in --skip-name-resolve mode.
2018-05-04T07:11:00.109348Z 5 [Warning] [MY-010311] [Server] 'proxies_priv' entry '@ root@localhost' ignored in --skip-name-resolve mode.
2018-05-04T07:11:00.109487Z 5 [Warning] [MY-010330] [Server] 'tables_priv' entry 'user mysql.session@localhost' ignored in --skip-name-resolve mode.
2018-05-04T07:11:00.109533Z 5 [Warning] [MY-010330] [Server] 'tables_priv' entry 'sys_config mysql.sys@localhost' ignored in --skip-name-resolve mode.
2018-05-04T07:11:01.059233Z 0 [System] [MY-013170] [Server] /opt/mysql/mysql-8.0.11-linux-glibc2.12-x86_64/bin/mysqld (mysqld 8.0.11) initializing of server
has completed
已经配置完成，启动数据库。
[root@dbwatcher mysql]# /etc/init.d/mysqld start
Starting MySQL.... [ OK ]
[root@yangdong_ceshi mysql]# mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 8.0.11 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.
(root@localhost:)[(none)]>
(root@localhost:)[(none)]> \s
--------------
mysql Ver 8.0.11 for linux-glibc2.12 on x86_64 (MySQL Community Server - GPL)
Connection id: 8
Current database:
Current user: root@localhost
SSL: Not in use
Current pager: stdout
Using outfile: ''
Using delimiter: ;
Server version: 8.0.11 MySQL Community Server - GPL
Protocol version: 10
Connection: Localhost via UNIX socket
Server characterset: utf8
Db characterset: utf8
Client characterset: utf8
Conn. characterset: utf8
UNIX socket: /data/mysql/tmp/mysql.sock
Uptime: 9 sec
Threads: 2 Questions: 7 Slow queries: 0 Opens: 113 Flush tables: 2 Open tables: 89 Queries per second avg: 0.777
--------------