1.下載下傳解壓安裝包
安裝包可到我上傳的資源中找(免費)
mysql離線包
下載下傳并上傳後就可以解壓了,自己指定存放目錄。
tar -xvf mysql-5.7.27-1.el7.x86_64.rpm-bundle.tar
tar zxvf perl.tar.gz
tar zxvf net-tools.tar.gz

2.解除安裝mariadb
rpm -qa|grep mariadb
rpm -e --nodeps mariadb-libs
3.離線包安裝
①Perl
cd /root/perl
rpm -ivh *.rpm
②net-tools
cd /root/net-tools
rpm -ivh net-tools-2.0-0.24.20131004git.el7.x86_64.rpm
③ mysql
cd /root
rpm -ivh mysql-community-common-5.7.27-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-5.7.27-1.el7.x86_64.rpm
rpm -ivh mysql-community-devel-5.7.27-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-compat-5.7.27-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-5.7.27-1.el7.x86_64.rpm
rpm -ivh libaio-0.3.109-13.el7.x86_64.rpm
rpm -ivh mysql-community-server-5.7.27-1.el7.x86_64.rpm
4.關閉mysql服務
service mysqld stop
5.修改配置檔案
vi /etc/my.cnf
加入下面配置
skip-grant-tables
6.開啟mysql服務并登陸
開啟服務
service mysqld start
登入MySQL
mysql -u root -p
7.設定mysql密碼(123456)
啟動mysql後輸入下面指令
flush privileges;
set password for [email protected] = password('123456');
flush privileges;
exit
8.停止mysql服務, 恢複mysql配置
service mysqld stop
vi /etc/my.cnf
注釋掉skip-grant-tables
恢複MySQL配置
9.啟動mysql服務并驗證
啟動MySQL(同步驟6)後使用新密碼登入
10.設定開機自啟
systemctl enable mysqld