1、先去MYSQL官网下载mysql-8.0.11-1.el7.x86_64.rpm-bundle.tar,解压如下:
mysql-8.0.11-1.el7.x86_64.rpm-bundle.tar
mysql-community-client-8.0.11-1.el7.x86_64.rpm
mysql-community-common-8.0.11-1.el7.x86_64.rpm
mysql-community-devel-8.0.11-1.el7.x86_64.rpm
mysql-community-embedded-compat-8.0.11-1.el7.x86_64.rpm
mysql-community-libs-8.0.11-1.el7.x86_64.rpm
mysql-community-libs-compat-8.0.11-1.el7.x86_64.rpm
mysql-community-minimal-debuginfo-8.0.11-1.el7.x86_64.rpm
mysql-community-server-8.0.11-1.el7.x86_64.rpm
mysql-community-server-minimal-8.0.11-1.el7.x86_64.rpm
mysql-community-test-8.0.11-1.el7.x86_64.rpm
查看已经安装的MYSQL然后卸载
rpm -qa | grep mysql
使用命令rpm -e --nodeps {-file-name}
进行移除操作,移除的时候可能会有依赖,要注意一定的顺序。
我的系统里只有一个MYSQL什么的 就只卸载一个,然后重启了一下。
三、使用rpm命令安装MySql组件
使用命令rpm -ivh {-file-name}
进行安装操作。
1 [root@sxl129 Downloads]# rpm -ivh mysql-community-common-5.7.20-1.el6.x86_64.rpm
2 warning: mysql-community-common-5.7.20-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
3 Preparing... ########################################### [100%]
4 1:mysql-community-common ########################################### [100%]
5 [root@centos Downloads]# rpm -ivh mysql-community-libs-5.7.20-1.el6.x86_64.rpm
6 warning: mysql-community-libs-5.7.20-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
7 Preparing... ########################################### [100%]
8 1:mysql-community-libs ########################################### [100%]
9 [root@centos Downloads]# rpm -ivh mysql-community-libs-compat-5.7.20-1.el6.x86_64.rpm
10 warning: mysql-community-libs-compat-5.7.20-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
11 Preparing... ########################################### [100%]
12 1:mysql-community-libs-co########################################### [100%]
13 [root@centos Downloads]# rpm -ivh mysql-community-client-5.7.20-1.el6.x86_64.rpm
14 warning: mysql-community-client-5.7.20-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
15 Preparing... ########################################### [100%]
16 1:mysql-community-client ########################################### [100%]
17 [root@centos Downloads]# rpm -ivh mysql-community-server-5.7.20-1.el6.x86_64.rpm
18 warning: mysql-community-server-5.7.20-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
19 Preparing... ########################################### [100%]
20 1:mysql-community-server ########################################### [100%]
注:ivh中, i-install
安装;v-verbose
进度条;h-hash
哈希校验
上面是复制别人的 安装顺序就是这样。
四、登录并创建MySql密码
1、启动Mysql
安装完后,使用命令service mysqld start
启动MySQL服务。
2、修改MySql的密码
由于MySQL5.7.4之前的版本中默认是没有密码的,登录后直接回车就可以进入数据库,进而进行设置密码等操作。其后版本对密码等安全相关操作进行了一些改变,在安装过程中,会在安装日志中生成一个随机密码。
怎么找到这个随机密码呢?
使用:
1 grep 'temporary password' /var/log/mysqld.log
即可查询到类似于如下的一条日志记录:
1 [root@centos Downloads]# grep 'temporary password' /var/log/mysqld.log
2 2017-12-03T10:34:49.423162Z 1 [Note] A temporary password is generated for root@localhost: hqQRMP:D)9Q&
hqQRMP:D)9Q&即为登录密码。使用这个随机密码登录进去,然后修改密码,使用命令:
mysql -uroot -p 复制密码回车进入。
修改密码:ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'Chai123!'
若提示错误:mysql提示密码不符合要求:ERROR 1819 (HY000): Your password does not satisfy the current policy requirements
mysql>set global validate_password.policy=0;