CentOs7.4安装Mysql5.7
一.下载安装包
目录
1.1官网下载
https://dev.mysql.com/downloads/mysql/
1.2选择好版本
1.3下载rpm包
mysql-community-common-5.7.22-1.el7.x86_64.rpm
mysql-community-libs-5.7.22-1.el7.x86_64.rpm
mysql-community-client-5.7.22-1.el7.x86_64.rpm
mysql-community-server-5.7.22-1.el7.x86_64.rpm
下载这4个包即可，如需要其他工具请自行下载安装
二.开始安装
2.1按上面顺序安装rpm包
[[email protected] ~]# rpm -ivh mysql-community-common-5.7.22-1.el7.x86_64.rpm
[[email protected] ~]# rpm -ivh mysql-community-libs-5.7.22-1.el7.x86_64.rpm
[[email protected] ~]# rpm -ivh mysql-community-client-5.7.22-1.el7.x86_64.rpm
[[email protected] ~]# rpm -ivh mysql-community-server-5.7.22-1.el7.x86_64.rpm
2.2启动mysql服务
[[email protected] ~]# service mysqld start
Redirecting to /bin/systemctl start mysqld.service
2.3登陆修改密码
启动后系统自动生成一个密码存储在/var/log/mysqld.log
[[email protected] ~]# grep password /var/log/mysqld.log
2018-07-18T10:42:45.283629Z 1 [Note] A temporary password is generated for [email protected]: 6q33PelhRK?v
[[email protected] ~]# mysql -uroot -p6q33PelhRK?v
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 6
Server version: 5.7.22
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
成功登陆
mysql> show databases;
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
意思是需要修改密码
mysql> alter user 'root'@'localhost' identified by '[email protected]';
三.遇到的问题
[[email protected] ~]# rpm -ivh mysql-community-libs-5.7.22-1.el7.x86_64.rpm
warning: mysql-community-libs-5.7.22-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
error: Failed dependencies:
mysql-community-common(x86-64) >= 5.7.9 is needed by mysql-community-libs-5.7.22-1.el7.x86_64
mariadb-libs is obsoleted by mysql-community-libs-5.7.22-1.el7.x86_64
第二行centos7自带mariadb与mysql冲突，卸载mariadb即可。第一行由于冲突mysql-community-common没有安装成功，卸载mariadb后重新安装即可。
[[email protected] ~]# rpm -qa |grep mariadb
mariadb-libs-5.5.56-2.el7.x86_64
[[email protected] ~]# rpm -e mariadb-libs-5.5.56-2.el7.x86_64
error: Failed dependencies:
libmysqlclient.so.18()(64bit) is needed by (installed) postfix-2:2.10.1-6.el7.x86_64
libmysqlclient.so.18(libmysqlclient_18)(64bit) is needed by (installed) postfix-2:2.10.1-6.el7.x86_64
强行卸载
[[email protected] ~]# rpm -e --nodeps mariadb-libs-5.5.56-2.el7.x86_64