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                ## 安裝MySQL 打開MySQL官網的下載頁`https://www.mysql.com/downloads/`,點擊圖示中的Yum Repository菜單 :-: ![](https://box.kancloud.cn/023fca208fe2700f66a68fa5f8cba76b_1116x435.jpg) 往下拉,找到適合MySQL80的下載鏈接,點進去,不用注冊登錄,在頁面最下端找到“No thanks, just start my download.”,右鍵復制下載鏈接。 ![](https://box.kancloud.cn/42c011fe37e793d579534b6f5a243929_1172x129.jpg) ~~~ https://dev.mysql.com/get/mysql80-community-release-el7-1.noarch.rpm ~~~ 該頁面也提供了MySQL Yum源的使用手冊,點擊鏈接進去就可以查看了: :-: ![](https://box.kancloud.cn/71616ba266c235d6e40e0ab50a68026f_616x158.jpg) 導入Yum源: ~~~ [root@localhost ~]# rpm -Uvh https://dev.mysql.com/get/mysql80-community-release-el7-1.noarch.rpm [root@localhost ~]# yum makecache fast ~~~ Yum源導入成功,可以安裝MySQL8.0了 ~~~ [root@localhost ~]# yum install mysql-community-server ~~~ 顯示: ~~~ =========================================================================================================== Package Arch Version Repository Size =========================================================================================================== Installing: mysql-community-server x86_64 8.0.12-1.el7 mysql80-community 349 M Transaction Summary =========================================================================================================== Install 1 Package Total download size: 349 M Installed size: 1.5 G Is this ok [y/d/N]: ~~~ > 注:為什么默認會安裝最新版本,而且沒有提供其它版本的MySQL供你選擇?因為在`/etc/yum.repos.d/mysql-community.repo`中已經設置其它版本`disabled`了。如果你要安裝其它版本的MySQL,只需要設置這個版本的`enabled=1`即可。 確認是MySQL8.0.12無誤,輸入`y`確認執行安裝。 349M,需要一點時間安裝。安裝完成后,檢查版本: ~~~ [root@localhost ~]# mysql -V ~~~ 輸出: ~~~ mysql Ver 8.0.12 for Linux on x86_64 (MySQL Community Server - GPL) ~~~ 版本正確。現在配置MySQL服務: 檢查mysqld服務是否啟動: ~~~ [root@localhost ~]# systemctl status mysqld.service ~~~ 返回: ~~~ ● mysqld.service - MySQL Server Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled) Active: inactive (dead) Docs: man:mysqld(8) http://dev.mysql.com/doc/refman/en/using-systemd.html ~~~ 沒有啟動,我們啟動它: ~~~ [root@localhost ~]# systemctl enable mysqld.service [root@localhost ~]# systemctl start mysqld.service [root@localhost ~]# systemctl status mysqld.service ~~~ 結果: ~~~ ● mysqld.service - MySQL Server Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled) Active: active (running) since Wed 2018-08-15 12:31:09 CST; 10s ago Docs: man:mysqld(8) http://dev.mysql.com/doc/refman/en/using-systemd.html Process: 1703 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS) Main PID: 1773 (mysqld) Status: "SERVER_OPERATING" CGroup: /system.slice/mysqld.service └─1773 /usr/sbin/mysqld Aug 15 12:31:00 localhost.localdomain systemd[1]: Starting MySQL Server... Aug 15 12:31:09 localhost.localdomain systemd[1]: Started MySQL Server. ~~~ 小綠燈閃耀,天氣真好。 安裝程序為`root@localhost`創建了初始密碼,通過下面的命令查看: ~~~ [root@localhost log]# grep 'temporary password' /var/log/mysqld.log ~~~ 輸出: ~~~ 2018-08-15T06:11:28.416464Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: 8Ftm8eb!S9/( ~~~ 這里就是你的初始密碼了,需要先修改它: ~~~ [root@localhost log]# mysql -uroot -p ~~~ 輸入初始密碼: ~~~ mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass4!'; ~~~ ~~~ Query OK, 0 rows affected (0.01 sec) ~~~ ~~~ mysql> show databases; ~~~ ~~~ +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | sys | +--------------------+ 4 rows in set (0.02 sec) ~~~ ~~~ mysql> quit'; ~~~ 關閉虛擬機,拍個快照吧 由于MySQL 8.0 開始改變了身份驗證插件,使用以前版本的客戶端連接時,可能會報Authentication plugin 'caching\_sha2\_password' cannot be loaded錯誤,如果出現這種情況,參考下面文章的方案解決: [http://www.cnblogs.com/hlhx/p/mysqlsha2.html](http://www.cnblogs.com/hlhx/p/mysqlsha2.html) [https://blog.csdn.net/faye0412/article/details/80396113](https://blog.csdn.net/faye0412/article/details/80396113)
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