liunx mysql8.0安装教程

安装目录

安装文件下载目录：/data/software
Mysql目录安装位置：/usr/local/mysql
数据库保存位置：/data/mysql
日志保存位置：/data/log/mysql

下载mysql

在官网：//dev.mysql.com/downloads/mysql/ 中，选择以下版本的mysql下载：

执行如下命名：

mkdir /data/software
cd /data/software

1.下载安装包

建议：在windows上使用迅雷下载，速度很快（我的是1M/s），然后用工具（Xftp）上传到 /data/software目录下；

 wget https://cdn.mysql.com//Downloads/MySQL-8.0/mysql-8.0.18-linux-glibc2.12-i686.tar.xz

2.解压压缩包

tar xvJf  mysql-8.0.18-linux-glibc2.12-i686.tar.xz

1. 移动并修改文件名

   mv /data/software/mysql-8.0.18-linux-glibc2.12-i686 /usr/local/mysql

4.创建数据仓库目录 /data/mysql 数据仓库目录

mkdir /data/mysql

5新建mysql用户、组及目录

#新建一个msyql组
groupadd mysql
#新建msyql用户禁止登录shell
useradd -r -s /sbin/nologin -g mysql mysql -d /usr/local/mysql

6改变目录属有者

cd /usr/local/
chown -R mysql mysql
chgrp -R mysql mysql
chown -R mysql /data/mysql

7初始化mysql 并配置参数

[root@dxt232 bin]# /usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql
2019-11-18T07:19:52.401741Z 0 [Warning] [MY-011070] [Server] 'Disabling symbolic links using --skip-symbolic-links (or equivalent) is the default. Consider not using this option as it' is deprecated and will be removed in a future release.
2019-11-18T07:19:52.401958Z 0 [System] [MY-013169] [Server] /usr/local/webserver/mysql/bin/mysqld (mysqld 8.0.18) initializing of server in progress as process 17479
2019-11-18T07:19:59.020850Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: eu#y#aaKZ0V7

此处需要注意记录生成的临时密码，如上文结尾处的：eu#y#aaKZ0V7

/usr/local/mysql/bin/mysql_ssl_rsa_setup  --datadir=/data/mysql

如果报错

[root@dxt232 mysql]# /usr/local/webserver/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/webserver/mysql --datadir=/data/mysql-bash: /usr/local/webserver/mysql/bin/mysqld: /lib/ld-linux.so.2: bad ELF interpreter: No such file or directory

解决报错出现的缺少软件扩展

yum install -y glibc.i686 libstdc++.so.6 libaio.i686 numactl-libs.i686

8.修改系统配置文件

cd /usr/local/mysql/support-files
cp mysql.server /etc/init.d/mysql

vim /etc/init.d/mysql

修改以下内容：

vim /etc/my.conf

修改以下内容：

9启动mysql
创建 /data/logs/mysql.log 日志文件, 并赋权chown mysql.mysql /data/logs/mysql.log

service mysql start

—登陆

# mysql -hlocalhost -uroot -p

—如果出现：-bash: mysql: command not found
—就执行： # ln -s /usr/local/mysql/bin/mysql /usr/bin —没有出现就不用执行

如果报错

[root@dxt232 mysql]# /usr/local/webserver/mysql/bin/mysql -uroot -p
Enter password: 
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
[root@dxt232 mysql]# ln -s /data/mysql/mysql.sock /tmp/mysql.sock

—输入第6步生成的临时密码

—修改密码

mysql> ALTER USER USER() IDENTIFIED BY 'root';

—设置root账户的host地址（修改了才可以远程连接）

mysql>grant all privileges on *.* to 'root'@'%' identified by 'root';
mysql>flush privileges;

—查看表

mysql> use mysql;
mysql> select host,user from user;

—这里就可以使用远程连接测试了；

如提示不能成功连接，可能需要添加需要监听的端口

/sbin/iptables -I INPUT -p tcp --dport 3306 -j ACCEPT

10添加系统路径

# vim /etc/profile

添加：

export PATH=/usr/local/mysql/bin:$PATH

如下：

# source /etc/profile

11配置mysql自动启动

# chmod 755 /etc/init.d/mysql
# chkconfig --add mysql
# chkconfig --level 345 mysql on

以上就是linux环境Mysql 5.7.13安装教程，希望对大家的学习有所帮助。

补充：

—退出mysql命令窗口

#exit

—查看mysql状态

#service mysql status

—停止mysql

#service mysql stop

—启动mysql

#service mysql start

附my.cnf（这是一个配置mysql配置文件，暂时可以不用管，如你想钻研 你可以百度或google “mysql my.cnf 配置详情”）

/etc/my.cnf

# For advice on how to change settings please see
# //dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html
# *** DO NOT EDIT THIS FILE. It's a template which will be copied to the
# *** default location during install, and will be replaced if you
# *** upgrade to a newer version of MySQL.
[mysqld]
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
innodb_buffer_pool_size = 10G
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
log_bin
character-set-server=utf8
collation-server=utf8_bin
init-connect='SET NAMES utf8'
# These are commonly set, remove the # and set as required.
basedir = /usr/local/mysql
datadir = /export/mysql/var
port = 3306
server_id = 22206
socket = /export/mysql/mysql.sock
binlog_format = statement
# 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
log_bin_trust_function_creators = on
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
lower_case_table_names=1