阿里云服务器安装Mysql数据库的详细教程

[root@localhost ~]# php -v
或
[root@localhost ~]# rpm -qa | grep mysql
或
[root@localhost ~]# yum list installed | grep mysql

mysql57-community-release-el7-8.noarch
mysql-community-common-5.1.73-1.el7.x86_64
mysql-community-client-5.1.73-1.el7.x86_64
mysql-community-server-5.1.73-1.el7.x86_64
mysql-community-libs-5.1.73-1.el7.x86_64
mysql-community-libs-compat-5.1.73-1.el7.x86_64

[root@localhost ~]# rpm -e mysql57-community-release-el7-8.noarch
[root@localhost ~]# rpm -e mysql-community-common-5.1.73-1.el7.x86_64
[root@localhost ~]# rpm -e mysql-community-client-5.1.73-1.el7.x86_64
[root@localhost ~]# rpm -e mysql-community-server-5.1.73-1.el7.x86_64
[root@localhost ~]# rpm -e mmysql-community-libs-5.1.73-1.el7.x86_64
[root@localhost ~]# rpm -e mysql-community-libs-compat-5.1.73-1.el7.x86_64

rm -rf /var/lib/mysql/ 

rm /etc/my.cnf

whereis mysql

mysql: /usr/bin/mysql /usr/lib64/mysql /usr/share/mysql /usr/share/man/man1/mysql.1.gz

systemctl list-dependencies mysqld

mysqld.service

mysqld.service
● ├─system.slice
● └─basic.target
● ├─microcode.service
● ├─rhel-dmesg.service
● ├─selinux-policy-migrate-local-changes@targeted.service
● ├─paths.target
● ├─slices.target
● │ ├─-.slice
● │ └─system.slice
● ├─sockets.target
● │ ├─dbus.socket
● │ ├─systemd-initctl.socket
● │ ├─systemd-journald.socket
● │ ├─systemd-shutdownd.socket
● │ ├─systemd-udevd-control.socket
● │ └─systemd-udevd-kernel.socket
● ├─sysinit.target
● │ ├─dev-hugepages.mount
● │ ├─dev-mqueue.mount
● │ ├─kmod-static-nodes.service
● │ ├─plymouth-read-write.service
● │ ├─plymouth-start.service
● │ ├─proc-sys-fs-binfmt_misc.automount
● │ ├─rhel-autorelabel-mark.service
● │ ├─rhel-autorelabel.service
● │ ├─rhel-domainname.service
● │ ├─rhel-import-state.service
● │ ├─rhel-loadmodules.service
● │ ├─sys-fs-fuse-connections.mount
● │ ├─sys-kernel-config.mount
● │ ├─sys-kernel-debug.mount

[root@localhost ~]# yum -y update

[root@localhost ~]# Complete!

[root@localhost ~]# reboot

root@localhost ~]# rpm -ivh http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm
或
[root@localhost ~]# rpm -ivh http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm

[root@localhost ~]# yum install -y mysql-server
或
[root@localhost ~]# yum install mysql-community-server

vi /etc/my.cnf

//在[mysqld]的下面添加服务端字符集
character-set-server=utf8
collation-server=utf8_general_ci

//需要在最下方填写客户端字符集
[client]
default-character-set=utf8

[root@localhost ~]# systemctl enable mysqld.service

[root@localhost ~]# systemctl list-unit-files | grep mysqld

mysqld.service enabled

[root@localhost ~]# systemctl start mysqld.service
或
[root@localhost ~]# service mysqld start

[root@localhost ~]# grep 'temporary password' /var/log/mysqld.log

[root@localhost ~]# cat /var/log/mysqld.log

[root@localhost ~]# mysql -uroot -p

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

set global validate_password_policy=LOW;

 set global validate_password_length=6;

alter user 'root'@'localhost' identified by '123456'; 

//授权
grant all privileges on *.* to 'root' @'%' identified by '密码';
//刷新
flush privileges;

systemctl stop firewalld.service