MySQL安裝

先卸載其他

刪除Mysql

yum remove mysql mysql-server mysql-libs mysql-server;find / -name mysql 將找到的相關(guān)東西delete掉(rm -rf /var/lib/mysql)；rpm -qa|grep mysql(查詢出來的東東yum remove掉) rm /etc/my.cnf

查看是否還有mysql軟件：
rpm -qa|grep mysql

a）查看系統(tǒng)中是否以rpm包安裝的mysql：

[root@localhost opt]# rpm -qa | grep -i mysql MySQL-server-5.6.17-1.el6.i686 MySQL-client-5.6.17-1.el6.i686

b)卸載mysql

[root@localhost local]# rpm -e MySQL-server-5.6.17-1.el6.i686 [root@localhost local]# rpm -e MySQL-client-5.6.17-1.el6.i686

c)刪除mysql服務(wù)

[root@localhost local]# chkconfig --list | grep -i mysql [root@localhost local]# chkconfig --del mysql

d)刪除分散mysql文件夾

[root@localhost local]# whereis mysql 或者 find / -name mysql mysql: /usr/lib/mysql /usr/share/mysql

f)清空相關(guān)mysql的所有目錄以及文件

rm -rf /usr/lib/mysql rm -rf /usr/share/mysql rm -rf /usr/my.cnf

注意要停止mysql服務(wù)（ps -ef | grep mysql)

安裝MySQL

cd /usr/local/src/ wget http://repo.mysql.com/mysql57-community-release-el7-8.noarch.rpm rpm -ivh mysql57-community-release-el7-8.noarch.rpm yum -y install mysql-server

• 如果有問題

wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm rpm -ivh mysql-community-release-el7-5.noarch.rpm yum install mysql-community-server service mysqld restart

啟動服務(wù)

啟動 MySQL：

systemctl start mysqld

查看 MySQL 運行狀態(tài)：

systemctl status mysqld

查看密碼并修改密碼

登陸mysql更改初始密碼
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement
修改密碼即可

grep 'temporary password' /var/log/mysqld.log set password=password(“密碼”);

允許用戶遠程連接mysql

grant all privileges on *.* to root@'%'identified by 'password'; FLUSH PRIVILEGES;

總結(jié)

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