二进制安装mysql
1,下载安装包,使用国内站点速度会比较快,如清华站点https://mirrors.tuna.tsinghua.edu.cn
登陆linux系统后,使用wget 进行下载mysql安装包。
#wget https://mirrors.tuna.tsinghua.edu.cn/mysql/downloads/MySQL-5.7/mysql-5.7.25-el7-x86_64.tar.gz
2,创建目录,把mysql安装包放入制定目录。
#cd /usr/local
# mkdir mysql
# mv mysql-5.7.25-el7-x86_64.tar.gz mysql/
3,解压安装包
# tar -zxvf mysql-5.7.25-el7-x86_64.tar.gz
查看解压后的文件:
4,创建用户和组。
# groupadd mysql
# useradd -g mysql mysql
5,在/usr/local/mysql/mysql-5.7.25-el7-x86_64下创建data和log目录(如果有的话就不需要创建)。
#cd /usr/local/mysql/mysql-5.7.25-el7-x86_64
#mkdir log
#mkdir data
6,设置配置文件 /etc/my.cnf。
[client]
port = 3306
socket = /tmp/mysql.sock
default-character-set=utf8
[mysqld]
user=mysql
port = 3306
server_id = 1
socket=/tmp/mysql.sock
basedir =/usr/local/mysql/mysql-5.7.25-el7-x86_64
datadir =/usr/local/mysql/mysql-5.7.25-el7-x86_64/data
pid-file=/usr/local/mysql/mysql-5.7.25-el7-x86_64/data/mysqld.pid
log-error=/usr/local/mysql/mysql-5.7.25-el7-x86_64/log/mysql-error.log
character_set_server=utf8
max_connections=1000
7,更改mysql安装文件的权限。
[root@192 mysql]# pwd
/usr/local/mysql
[root@192 mysql]# chown -R mysql:mysql mysql-5.7.25-el7-x86_64
创建log文件
# touch mysql-error.log
# chown 776 mysql-error.log
# chown mysql:mysql mysql-error.log
创建socketfile文件。
# mkdir socketfile
# chown -R mysql:mysql socketfile
8,初始化数据库。
#cd /usr/local/mysql/mysql-5.7.25-el7-x86_64/bin
./mysqld --initialize --user=mysql
在mysql-error.log文件中查看初始密码。
#cd /usr/local/mysql/mysql-5.7.25-el7-x86_64/log
# cat mysql-error.log
9,配置环境变量,编辑/etc/profile文件,添加Mysql查找路径。
#vi /etc/profile
设置mysql service服务
#cd /usr/local/mysql/mysql-5.7.25-el7-x86_64/support-files
# cp mysql.server /etc/init.d/mysql.server
启动mysql服务:
#service mysql.server start
发现报错,根据报错内容创建/log/mariadb/mariadb.log和/data/mysqld.pid
通常手动编译安装会遇到依赖问题,如果有以下这种错误:
解决方法如下:
wget https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm
yum localinstall mysql57-community-release-el7-11.noarch.rpm
yum install mysql-community-client.x86_64 mysql-community-server.x86_64
重启mysql服务。
# service mysql.server restart
10,查看mysql临时密码,使用临时密码登陆mysql。
#cd /usr/local/mysql/mysql-5.7.25-el7-x86_64/log
# cat mysql-error.log | grep 'root@localhost:'
# cat mysql-error.log | grep 'root@localhost:'|awk '{print $NF}'
11,更改root密码,和创建新用户及设置新用户的权限。
mysql> SET PASSWORD = PASSWORD('qwe123');
Query OK, 0 rows affected, 1 warning (0.00 sec)
创建用户配置登录:
mysql> CREATE USER 'test'@'%' IDENTIFIED BY 'qwe123';
Query OK, 0 rows affected (0.00 sec)
mysql> GRANT ALL ON *.* TO 'test'@'%';
Query OK, 0 rows affected (0.00 sec)
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)
修改密码:
mysql> update mysql.user set authentication_string=password('123456') where user='root';
配置文件:/etc/my.cnf