本文整理自网络，侵删。
使用下面的命令检查是否安装有MySQL Server
[root@localhost etc]# rpm -qa | grep mysql // 这个命令就会查看该操作系统上是否已经安装了mysql数据库
有的话，我们就通过 rpm -e 命令 或者 rpm -e --nodeps 命令来卸载掉
[root@localhost ~]# rpm -e mysql // 普通删除模式 [root@localhost ~]# rpm -e --nodeps mysql // 强力删除模式，如果使用上面命令删除时，提示有依赖的其它文件，则用该命令可以对其进行强力删除
在删除完以后我们可以通过 rpm -qa | grep mysql 命令来查看mysql是否已经卸载成功！！
官网yum repository 下载安装包
[root@localhost ~]# wget http://dev.mysql.com/get/mysql57-community-release-el6-10.noarch.rpm --2017-04-24 18:53:49-- http://dev.mysql.com/get/mysql57-community-release-el6-10.noarch.rpm Resolving dev.mysql.com... 137.254.60.11 Connecting to dev.mysql.com|137.254.60.11|:80... connected. HTTP request sent, awaiting response... 301 Moved Permanently Location: https://dev.mysql.com/get/mysql57-community-release-el6-10.noarch.rpm [following] --2017-04-24 18:53:49-- https://dev.mysql.com/get/mysql57-community-release-el6-10.noarch.rpm Connecting to dev.mysql.com|137.254.60.11|:443... connected. ERROR: certificate common name “www.mysql.com” doesn't match requested host name “dev.mysql.com”. To connect to dev.mysql.com insecurely, use ‘--no-check-certificate'
本地安装下载下来的rpm包
[root@localhost ~]# yum localinstall mysql57-community-release-el6-10.noarch.rpm Loaded plugins: fastestmirror, refresh-packagekit, security Setting up Local Package Process Examining mysql57-community-release-el6-10.noarch.rpm: mysql57-community-release-el6-10.noarch Marking mysql57-community-release-el6-10.noarch.rpm to be installed Loading mirror speeds from cached hostfile * base: mirrors.cn99.com * extras: mirrors.cn99.com * updates: mirrors.cn99.com Resolving Dependencies --> Running transaction check ---> Package mysql57-community-release.noarch 0:el6-10 will be installed --> Finished Dependency Resolution Dependencies Resolved =============================================================================================================================================================================================== Package Arch Version Repository Size =============================================================================================================================================================================================== Installing: mysql57-community-release noarch el6-10 /mysql57-community-release-el6-10.noarch 30 k Transaction Summary =============================================================================================================================================================================================== Install 1 Package(s) Total size: 30 k Installed size: 30 k Is this ok [y/N]: y Downloading Packages: Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Installing : mysql57-community-release-el6-10.noarch 1/1 Verifying : mysql57-community-release-el6-10.noarch 1/1 Installed: mysql57-community-release.noarch 0:el6-10 Complete!
查看可用的安装包
[root@localhost ~]# yum repolist enabled|grep mysql mysql-connectors-community MySQL Connectors Community 33 mysql-tools-community MySQL Tools Community 47 mysql57-community MySQL 5.7 Community Server 183
安装前装gcc所有包，防止报错[Errno -1] Package does not match intended download
[root@localhost yum.repos.d]# yum install gcc*
安装mysql
[root@localhost yum.repos.d]# yum install -y mysql-community-server Loaded plugins: fastestmirror, refresh-packagekit, security Loading mirror speeds from cached hostfile * base: mirrors.cn99.com * extras: mirrors.cn99.com * updates: mirrors.cn99.com Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package mysql-community-server.x86_64 0:5.7.18-1.el6 will be installed --> Processing Dependency: mysql-community-common(x86-64) = 5.7.18-1.el6 for package: mysql-community-server-5.7.18-1.el6.x86_64 --> Processing Dependency: mysql-community-client(x86-64) >= 5.7.9 for package: mysql-community-server-5.7.18-1.el6.x86_64 --> Running transaction check ---> Package mysql-community-client.x86_64 0:5.7.18-1.el6 will be installed --> Processing Dependency: mysql-community-libs(x86-64) >= 5.7.9 for package: mysql-community-client-5.7.18-1.el6.x86_64 ---> Package mysql-community-common.x86_64 0:5.7.18-1.el6 will be installed --> Running transaction check ---> Package mysql-community-libs.x86_64 0:5.7.18-1.el6 will be obsoleting ---> Package mysql-libs.x86_64 0:5.1.71-1.el6 will be obsoleted --> Processing Dependency: libmysqlclient.so.16()(64bit) for package: 2:postfix-2.6.6-2.2.el6_1.x86_64 --> Processing Dependency: libmysqlclient.so.16(libmysqlclient_16)(64bit) for package: 2:postfix-2.6.6-2.2.el6_1.x86_64 --> Running transaction check ---> Package mysql-community-libs-compat.x86_64 0:5.7.18-1.el6 will be obsoleting ---> Package postfix.x86_64 2:2.6.6-2.2.el6_1 will be updated ---> Package postfix.x86_64 2:2.6.6-8.el6 will be an update --> Finished Dependency Resolution Dependencies Resolved ============================================================================================================================= Package Arch Version Repository Size ============================================================================================================================= Installing: mysql-community-libs x86_64 5.7.18-1.el6 mysql57-community 2.1 M replacing mysql-libs.x86_64 5.1.71-1.el6 mysql-community-libs-compat x86_64 5.7.18-1.el6 mysql57-community 1.6 M replacing mysql-libs.x86_64 5.1.71-1.el6 mysql-community-server x86_64 5.7.18-1.el6 mysql57-community 152 M Installing for dependencies: mysql-community-client x86_64 5.7.18-1.el6 mysql57-community 23 M mysql-community-common x86_64 5.7.18-1.el6 mysql57-community 328 k Updating for dependencies: postfix x86_64 2:2.6.6-8.el6 base 2.0 M Transaction Summary ============================================================================================================================= Install 5 Package(s) Upgrade 1 Package(s) Total size: 180 M Total download size: 152 M Downloading Packages: mysql-community-server-5.7.18-1.el6.x86_64.rpm | 152 MB 01:41 warning: rpmts_HdrFromFdno: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql Importing GPG key 0x5072E1F5: Userid : MySQL Release Engineering <mysql-build@oss.oracle.com> Package: mysql57-community-release-el6-10.noarch (@/mysql57-community-release-el6-10.noarch) From : /etc/pki/rpm-gpg/RPM-GPG-KEY-mysql Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Installing : mysql-community-common-5.7.18-1.el6.x86_64 1/8 Installing : mysql-community-libs-5.7.18-1.el6.x86_64 2/8 Installing : mysql-community-libs-compat-5.7.18-1.el6.x86_64 3/8 Installing : mysql-community-client-5.7.18-1.el6.x86_64 4/8 Installing : mysql-community-server-5.7.18-1.el6.x86_64 5/8 Updating : 2:postfix-2.6.6-8.el6.x86_64 6/8 Cleanup : 2:postfix-2.6.6-2.2.el6_1.x86_64 7/8 Erasing : mysql-libs-5.1.71-1.el6.x86_64 8/8 Verifying : 2:postfix-2.6.6-8.el6.x86_64 1/8 Verifying : mysql-community-libs-compat-5.7.18-1.el6.x86_64 2/8 Verifying : mysql-community-server-5.7.18-1.el6.x86_64 3/8 Verifying : mysql-community-libs-5.7.18-1.el6.x86_64 4/8 Verifying : mysql-community-common-5.7.18-1.el6.x86_64 5/8 Verifying : mysql-community-client-5.7.18-1.el6.x86_64 6/8 Verifying : 2:postfix-2.6.6-2.2.el6_1.x86_64 7/8 Verifying : mysql-libs-5.1.71-1.el6.x86_64 8/8 Installed: mysql-community-libs.x86_64 0:5.7.18-1.el6 mysql-community-libs-compat.x86_64 0:5.7.18-1.el6 mysql-community-server.x86_64 0:5.7.18-1.el6 Dependency Installed: mysql-community-client.x86_64 0:5.7.18-1.el6 mysql-community-common.x86_64 0:5.7.18-1.el6 Dependency Updated: postfix.x86_64 2:2.6.6-8.el6 Replaced: mysql-libs.x86_64 0:5.1.71-1.el6 Complete!
启动mysql
[root@localhost yum.repos.d]# service mysqld start Initializing MySQL database: [ OK ] Installing validate password plugin: [ OK ] Starting mysqld:
进入mysql安全模式
[root@localhost yum.repos.d]# killall -TERM mysqld
[root@localhost yum.repos.d]# mysqld_safe --skip-grant-tables &
[1] 40422
[root@localhost yum.repos.d]# 2017-04-25T07:45:39.222061Z mysqld_safe Logging to '/var/log/mysqld.log'.
2017-04-25T07:45:39.246117Z mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.18 MySQL Community Server (GPL)
Copyright (c) 2000, 2017, 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> use mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> select * from users;
ERROR 1146 (42S02): Table 'mysql.users' doesn't exist
mysql> select * from user;
mysql> update user set authentication_string=PASSWORD('mysql') where user='root';
Query OK, 1 row affected, 1 warning (0.00 sec)
Rows matched: 1 Changed: 1 Warnings: 1
mysql> quit
Bye
[2]+ Exit 1 mysqld_safe --skip-grant-tables
[root@localhost yum.repos.d]# service mysqld start
Starting mysqld: [ OK ]
[root@localhost yum.repos.d]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.7.18 MySQL Community Server (GPL)
Copyright (c) 2000, 2017, 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 -h主机地址 -u用户名 －p用户密码
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