Mysql database installation tutorial under Linux

1 . Install new version mysql front , The system's own mariadb-lib uninstall [[email protected] ~]# rpm -qa|grep mariadb mariadb-libs-5.5.52-1.el7.x86_64 [[email protected] ~]# rpm -e –nodeps mariadb-libs-5.5.52-1.el7.x86_64 2 Upload mysql ：mysql-5.7.18-1.el7.x86_64.rpm-bundle.tar 3 Create folder ：mkdir /usr/local/mysql 3 Unzip the installation package to the target folder ： tar -xvf mysql-5.7.18-1.el7.x86_64.rpm-bundle.tar -C /usr/local/mysql

4 Use rpm -ivh Command to install in sequence , Installation sequence rpm -ivh mysql-community-common-5.7.18-1.el7.x86_64.rpm mysql-community-libs-5.7.18-1.el7.x86_64.rpm（ Depend on common） mysql-community-client-5.7.18-1.el7.x86_64.rpm（ Depend on libs） mysql-community-server-5.7.18-1.el7.x86_64.rpm（ Depend on common,client）

perl(Getopt::Long) is needed by mysql-community-server-5.7.18-1.el7.x86_64 perl(strict) is needed by mysql-community-server-5.7.18-1.el7.x86_64 It's very clear here , The lack of perl, perform yum install perl Then install , success ！ 5 Start and stop MySQL After completing the installation steps , First configuration MySQL It starts automatically , Use it here systemctl command . # systemctl enable mysqld.service Then use systemctl start mysqld.service Command to start MySQL. # systemctl start mysqld.service And stop MySQL When using systemctl stop mysqld.service command . # systemctl stop mysqld.service 6 land MySQL At this time, we will encounter difficulties , You can't get in without a password ： stay /ect/my.cnf Add a line on the last side of ： skip-grant-tables Save and exit restart mysql service ：service mysqld restart And then connect mysql That's all right. Get into mysql： use mysql; update mysql.user set authentication_string=password(‘123qwe’) where user=’root’; Then take it. my.cnf Delete the added line , And then use root Account and password entry mysql It needs to be reset after entering root password ： SET PASSWORD = PASSWORD(‘[email protected]’); ALTER USER ‘root’@’localhost’ PASSWORD EXPIRE NEVER;// Set password never expires This password must conform to the password specification flush privileges;（ To give immediate effect to ） Set up remote login ： GRANT ALL PRIVILEGES ON *.* TO ‘root’@’%’ IDENTIFIED BY ‘[email protected]’ WITH GRANT OPTION; flush privileges;（ To give immediate effect to ） 7 Set up firewall ： Open port firewall-cmd –zone=public –add-port=3306/tcp –permanent service iptables restart firewall-cmd –reload See if the rule is in effect iptables -L -n

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