检查安装和卸载#检查rpm-qa|grepmysql#卸载yum-yremovemysql-libs-5.1.66-2.el6_3.x86_641.centos7需要先卸载mariadb查看命令rpm-qa|grepmariadb安装包资源地址mysql下载地址#下载资源名称mysql-5.7.22-1.el7.x86_64.rpm-bundle.tar解压资源tar-xvfmysql-5.7.22-1.el7.x86_64.rpm-bundle.tar获取rpm包mysql-community-common-5.7.19-1.el6.x86_64.rpmmysql-community-client-5.7.19-1.el6.x86_64.rpmmysql-community-server-5.7.19-1.el6.x86_64.rpmmysql-community-libs-5.7.19-1.el6.x86_64.rpminstallation#安装顺序#common-->libs-->clients-->server#安装命令rpm-ivhmysql-community-common-5.7.19-1.el6.x86_64.rpmmysql-community-libs-5.7.19-1.el6.x86_64.rpmmysql-community-client-5.7.19-1.el6.x86_64.rpmmysql-community-server-5.7.19-1。el6.x86_64.rpm可能需要依赖包libaio安装命令yum-yinstalllibaio初始化mysqld--initialize--user=mysql启动服务mysqldstartLogin#查看初始密码cat/var/logs/mysql.log#或者grep'password'/var/logs/mysql.log-n-B5#登录mysql-uroot-p'123456'#修改初始密码setPASSWORD=PASSWORD('password');授权远程链接###授权192.168.0.1为远程链接*[所有数据库].*[所有表]账户：root密码123456grantallprivilegeson*.*to'root'@'192.168.0.1'identifiedby'123456';###authorizeallipgrantallprivilegeson*.*to'root'@'%'由'123456'标识;上面*.*的###表示[数据库].[表]###使授权立即生效flush权限；
