轉載自(https://www.cnblogs.com/pythonal/p/6141516.html)


0、環境

本文作業系統: CentOS 7.2.1511 x86_64
MySQL 版本: 5.7.16

1、解除安裝系統自帶的 mariadb-lib

[[email protected] ~]# rpm -qa|grep mariadb
 mariadb-libs-5.5.44-2.el7.centos.x86_64 
[[email protected] ~]# rpm -e mariadb-libs-5.5.44-2.el7.centos.x86_64 --nodeps

2、下載mysql5.7.16 rpm安裝包，官網最新的mysql安裝包是mysql-5.7.16-1.el7.x86_64.rpm-bundle.tar下載地址

[
 
[email protected] ~]# wget http://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.16-1.el7.x86_64.rpm-bundle.tar

然後解壓

　[[email protected]_node_1 src]# tar -xvf mysql-5.7.16-1.el7.x86_64.rpm-bundle.tar
  mysql-community-libs-compat-5.7.16-1.el7.x86_64.rpm
  mysql-community-devel-5.7.16-1.el7.x86_64.rpm
  mysql-community-minimal-debuginfo-5.7.16-1.el7.x86_64.rpm
  mysql-community-libs-5.7.16-1.el7.x86_64.rpm
  mysql-community-common-5.7.16-1.el7.x86_64.rpm
  mysql-community-embedded-compat-5.7.16-1.el7.x86_64.rpm
  mysql-community-test-5.7.16-1.el7.x86_64.rpm
  mysql-community-embedded-devel-5.7.16-1.el7.x86_64.rpm
  mysql-community-server-minimal-5.7.16-1.el7.x86_64.rpm
  mysql-community-server-5.7.16-1.el7.x86_64.rpm
  mysql-community-client-5.7.16-1.el7.x86_64.rpm
  mysql-community-embedded-5.7.16-1.el7.x86_64.rpm

3、安裝
依次執行（幾個包有依賴關係，所以執行有先後）下面命令安裝
[
 
[email protected] ~]# rpm -ivh mysql-community-common-5.7.16-1.el7.x86_64.rpm 
[[email protected] ~]# rpm -ivh mysql-community-libs-5.7.16-1.el7.x86_64.rpm
[[email protected] ~]# rpm -ivh mysql-community-client-5.7.16-1.el7.x86_64.rpm 
[[email protected] ~]# rpm -ivh mysql-community-server-5.7.16-1.el7.x86_64.rpm
在安裝rpm -ivh mysql-community-server-5.7.16-1.el7.x86_64.rpm的時候報錯如下：

  [
 
[email protected]_node_1 src]# rpm -ivh mysql-community-server-5.7.16-1.el7.x86_64.rpm
  warning: mysql-community-server-5.7.16-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
  error: Failed dependencies:
  libaio.so.1()(64bit) is needed by mysql-community-server-5.7.16-1.el7.x86_64
  libaio.so.1(LIBAIO_0.1)(64bit) is needed by mysql-community-server-5.7.16-1.el7.x86_64
  libaio.so.1(LIBAIO_0.4)(64bit) is needed by mysql-community-server-5.7.16-1.el7.x86_64
  net-tools is needed by mysql-community-server-5.7.16-1.el7.x86_64

  這個報錯的意思是需要安裝libaio包和net-tools包：可以yum安裝一下，安裝 libaio-0.3.107-10.el6.x86_64.rpm，下載地址：

wget http://mirror.centos.org/centos/6/os/x86_64/Packages/libaio-0.3.107-10.el6.x86_64.rpm
然後yum安裝net-tools   yum install net-tools  完成之後就可以順利安裝

4、資料庫初始化

為了保證資料庫目錄為與檔案的所有者為 mysql 登陸使用者，如果你是以 root 身份執行 mysql 服務，需要執行下面的命令初始化
mysqld --initialize --user=mysql

  如果是以 mysql 身份執行，則可以去掉 --user 選項。

  另外 --initialize 選項預設以“安全”模式來初始化，則會為 root 使用者生成一個密碼並將該密碼標記為過期，登陸後你需要設定一個新的密碼，而使用 --initialize-insecure 命令則不使用安全模式，則不會為 root 使用者生成一個密碼。

  這裡演示使用的 --initialize 初始化的，會生成一個 root 賬戶密碼，密碼在log檔案裡，紅色區域的就是自動生成的密碼

  [[email protected]_node_1 src]# cat /var/log/mysqld.log
  2016-12-07T04:41:58.028558Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
  2016-12-07T04:41:58.315188Z 0 [Warning] InnoDB: New log files created, LSN=45790
  2016-12-07T04:41:58.355114Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
  2016-12-07T04:41:58.418448Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 7cc98831-bc37-11e6-a263-000c29f902dc.
  2016-12-07T04:41:58.419935Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
  2016-12-07T04:41:58.420558Z 1 [Note] A temporary password is generated for [email protected]: )1r3gi,hjgQa

  現在啟動mysql資料庫systemctl start mysqld.service

  [[email protected]_node_1 src]# systemctl start mysqld.service

  [[email protected]_node_1 src]# mysql -uroot -p

  Enter password:
  Welcome to the MySQL monitor. Commands end with ; or \g.
  Your MySQL connection id is 2
  Server version: 5.7.16

  Copyright (c) 2000, 2016, 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>

 

  5、修改密碼

 

  該密碼被標記為過期了，如果想正常使用還需要修改密碼

 

mysql> show databases;
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.

 

  以前的 password()函式將會被拋棄，官方建議使用下面的命令來修改密碼

 

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'new_password';

 

  同時，如果你設定的密碼過於簡單也會報錯。

 

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY '123';
ERROR 1819 (HY000): Your password does not satisfy the current policy requirements

最後開啟遠端訪問：
	然後設定root使用者的遠端訪問許可權

在mysql控制檯執行:

mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'MyPassword' WITH GRANT OPTION;

mysql> FLUSH PRIVILEGES;

mysql>exit!