CentOS7 安装mysql 8.0
2017-07-13 11:54
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CentOS7的yum源中默认是没有mysql的,我们需要要先下载mysql的repo源。
1、下载mysql的repo源
wget http://repo.mysql.com/yum/mysql-8.0-community/el/7/x86_64/mysql57-community-release-el7-9.noarch.rpm
2、安装mysql57-community-release-el7-9.noarch.rpm包
rpm -ivh mysql57-community-release-el7-9.noarch.rpm
3、修改MySQL的repo源,使MySQL8.0可用
vi /etc/yum.repos.d/mysql-community.repo
[mysql-connectors-community]
name=MySQL Connectors Community
baseurl=http://repo.mysql.com/yum/mysql-connectors-community/el/7/$basearch/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
[mysql-tools-community]
name=MySQL Tools Community
baseurl=http://repo.mysql.com/yum/mysql-tools-community/el/7/$basearch/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
# Enable to use MySQL 5.5
[mysql55-community]
name=MySQL 5.5 Community Server
baseurl=http://repo.mysql.com/yum/mysql-5.5-community/el/7/$basearch/
enabled=0
gpgcheck=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
# Enable to use MySQL 5.6
[mysql56-community]
name=MySQL 5.6 Community Server
baseurl=http://repo.mysql.com/yum/mysql-5.6-community/el/7/$basearch/
enabled=0
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
[mysql57-community]
4000
name=MySQL 5.7 Community Server
baseurl=http://repo.mysql.com/yum/mysql-5.7-community/el/7/$basearch/
enabled=0(修改后)
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
[mysql80-community]
name=MySQL 8.0 Community Server
baseurl=http://repo.mysql.com/yum/mysql-8.0-community/el/7/$basearch/
enabled=1(修改后)
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
[mysql-tools-preview]
name=MySQL Tools Preview
baseurl=http://repo.mysql.com/yum/mysql-tools-preview/el/7/$basearch/
enabled=0
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
4、安装mysql-server
sudo yum install mysql-server
根据步骤安装就可以了
4、重置密码
重置密码前,首先要登录
mysql -u root
登录时有可能报这样的错:ERROR 2002 (HY000): Can‘t connect to localMySQL server through socket ‘/var/lib/mysql/mysql.sock‘ (2),原因是/var/lib/mysql的访问权限问题。下面的命令把/var/lib/mysql的拥有者改为当前用户:
chown -R root:root /var/lib/mysql
然后,重启服务:
service mysqld restart
5、MySQL安装完毕时,生成一个随机密码
随机密码在 /var/log/mysqld.log
使用查看密码: grep 'temporary password' /var/log/mysqld.log
用随机密码登录然后更改密码
update mysql.user set authentication_string=password('new_password') where user='root' and Host = 'localhost';
若显示未修改密码,无权限修改,执行
systemctl stop mysqld
vi /etc/my.cnf
在[mysqld]的段中加上一句:skip-grant-tables,如下:
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
skip-grant-tables
保存,重启服务
systemctl start mysqld
用随机密码登录
修改密码:
update mysql.user set authentication_string=password('new_password') where user='root' and Host = 'localhost';
退出
将my.cnf的设置修改回来,重启MySQL服务
再次登录,OK!
1、下载mysql的repo源
wget http://repo.mysql.com/yum/mysql-8.0-community/el/7/x86_64/mysql57-community-release-el7-9.noarch.rpm
2、安装mysql57-community-release-el7-9.noarch.rpm包
rpm -ivh mysql57-community-release-el7-9.noarch.rpm
3、修改MySQL的repo源,使MySQL8.0可用
vi /etc/yum.repos.d/mysql-community.repo
[mysql-connectors-community]
name=MySQL Connectors Community
baseurl=http://repo.mysql.com/yum/mysql-connectors-community/el/7/$basearch/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
[mysql-tools-community]
name=MySQL Tools Community
baseurl=http://repo.mysql.com/yum/mysql-tools-community/el/7/$basearch/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
# Enable to use MySQL 5.5
[mysql55-community]
name=MySQL 5.5 Community Server
baseurl=http://repo.mysql.com/yum/mysql-5.5-community/el/7/$basearch/
enabled=0
gpgcheck=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
# Enable to use MySQL 5.6
[mysql56-community]
name=MySQL 5.6 Community Server
baseurl=http://repo.mysql.com/yum/mysql-5.6-community/el/7/$basearch/
enabled=0
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
[mysql57-community]
4000
name=MySQL 5.7 Community Server
baseurl=http://repo.mysql.com/yum/mysql-5.7-community/el/7/$basearch/
enabled=0(修改后)
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
[mysql80-community]
name=MySQL 8.0 Community Server
baseurl=http://repo.mysql.com/yum/mysql-8.0-community/el/7/$basearch/
enabled=1(修改后)
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
[mysql-tools-preview]
name=MySQL Tools Preview
baseurl=http://repo.mysql.com/yum/mysql-tools-preview/el/7/$basearch/
enabled=0
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
4、安装mysql-server
sudo yum install mysql-server
根据步骤安装就可以了
4、重置密码
重置密码前,首先要登录
mysql -u root
登录时有可能报这样的错:ERROR 2002 (HY000): Can‘t connect to localMySQL server through socket ‘/var/lib/mysql/mysql.sock‘ (2),原因是/var/lib/mysql的访问权限问题。下面的命令把/var/lib/mysql的拥有者改为当前用户:
chown -R root:root /var/lib/mysql
然后,重启服务:
service mysqld restart
5、MySQL安装完毕时,生成一个随机密码
随机密码在 /var/log/mysqld.log
使用查看密码: grep 'temporary password' /var/log/mysqld.log
用随机密码登录然后更改密码
update mysql.user set authentication_string=password('new_password') where user='root' and Host = 'localhost';
若显示未修改密码,无权限修改,执行
systemctl stop mysqld
vi /etc/my.cnf
在[mysqld]的段中加上一句:skip-grant-tables,如下:
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
skip-grant-tables
保存,重启服务
systemctl start mysqld
用随机密码登录
修改密码:
update mysql.user set authentication_string=password('new_password') where user='root' and Host = 'localhost';
退出
将my.cnf的设置修改回来,重启MySQL服务
再次登录,OK!
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