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Linux RPM 方式安裝 MySQL在 hadoop02機器上
1、 安裝新版mysql前，需將系統自帶的mariadb-lib解除安裝
[root@hadoop02 ~]# rpm -qa|grep mariadb #查詢系統自帶得mariadb-lib
mariadb-libs-5.5.68-1.el7.x86_64
[root@hadoop02 ~]# rpm -e --nodeps mariadb-libs-5.5.68-1.el7.x86_64 #解除安裝系統自帶得mariadb-lib
[root@hadoop02 ~]# rpm -qa|grep mariadb #檢查系統自帶得mariadb-lib是否已解除安裝
2. 官網下載5.7版本：
3.可以使用xftp上傳到hadoop02機器得/opt/mysql目錄下
4. 解壓安裝包並
[root@hadoop02 mysql]# tar -xvf mysql-5.7.32-1.el7.x86_64.rpm-bundle.tar mysql-community-client-5.7.32-1.el7.x86_64.rpm mysql-community-common-5.7.32-1.el7.x86_64.rpm mysql-community-devel-5.7.32-1.el7.x86_64.rpm mysql-community-embedded-5.7.32-1.el7.x86_64.rpm mysql-community-embedded-compat-5.7.32-1.el7.x86_64.rpm mysql-community-embedded-devel-5.7.32-1.el7.x86_64.rpm mysql-community-libs-5.7.32-1.el7.x86_64.rpm mysql-community-libs-compat-5.7.32-1.el7.x86_64.rpm mysql-community-server-5.7.32-1.el7.x86_64.rpm mysql-community-test-5.7.32-1.el7.x86_64.rpm [root@hadoop02 mysql]# ll 總用量 1060072 -rw-r--r-- 1 root root 542750720 12月 15 14:21 mysql-5.7.32-1.el7.x86_64.rpm-bundle.tar -rw-r--r-- 1 7155 31415 26460548 9月 25 12:48 mysql-community-client-5.7.32-1.el7.x86_64.rpm -rw-r--r-- 1 7155 31415 314936 9月 25 12:48 mysql-community-common-5.7.32-1.el7.x86_64.rpm -rw-r--r-- 1 7155 31415 3918236 9月 25 12:48 mysql-community-devel-5.7.32-1.el7.x86_64.rpm -rw-r--r-- 1 7155 31415 47479624 9月 25 12:48 mysql-community-embedded-5.7.32-1.el7.x86_64.rpm -rw-r--r-- 1 7155 31415 23263144 9月 25 12:48 mysql-community-embedded-compat-5.7.32-1.el7.x86_64.rpm -rw-r--r-- 1 7155 31415 130933732 9月 25 12:48 mysql-community-embedded-devel-5.7.32-1.el7.x86_64.rpm -rw-r--r-- 1 7155 31415 2457204 9月 25 12:48 mysql-community-libs-5.7.32-1.el7.x86_64.rpm -rw-r--r-- 1 7155 31415 1260336 9月 25 12:48 mysql-community-libs-compat-5.7.32-1.el7.x86_64.rpm -rw-r--r-- 1 7155 31415 181712536 9月 25 12:49 mysql-community-server-5.7.32-1.el7.x86_64.rpm -rw-r--r-- 1 7155 31415 124941892 9月 25 12:49 mysql-community-test-5.7.32-1.el7.x86_64.rpm
為了避免出現許可權問題，給mysql解壓檔案所在目錄賦予最大許可權
[root@hadoop02 opt]# chmod -R 777 mysql/ [root@hadoop02 opt]# ll 總用量 4 drwxrwxrwx 2 root root 4096 12月 15 14:23 mysql drwxr-xr-x. 2 root root 6 10月 31 2018 rh
嚴格按照順序安裝：mysql-community-common-5.7.29-1.el7.x86_64.rpm、mysql-community-libs-5.7.29-1.el7.x86_64.rpm、mysql-community-client-5.7.29-1.el7.x86_64.rpm、mysql-community-server-5.7.29-1.el7.x86_64.rpm這四個包
rpm -ivh mysql-community-common-5.7.32-1.el7.x86_64.rpm rpm -ivh mysql-community-libs-5.7.32-1.el7.x86_64.rpm rpm -ivh mysql-community-client-5.7.32-1.el7.x86_64.rpm rpm -ivh mysql-community-server-5.7.32-1.el7.x86_64.rpm
5. 配置資料庫
vim /etc/my.cnf
新增這三行
skip-grant-tables：跳過登入驗證
character_set_server=utf8：設定預設字符集UTF-8
init_connect='SET NAMES utf8'：設定預設字符集UTF-8
6 . 啟動mysql服務
[root@hadoop02 mysql]# systemctl start mysqld.service #設定開機啟動
[root@hadoop02 mysql]# mysql #啟動mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.32 MySQL Community Server (GPL)
Copyright (c) 2000, 2020, 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>
7. 設定密碼和開啟遠端登入
設定一個簡單的密碼
mysql> update mysql.user set authentication_string=password('123456') where user='root';
Query OK, 1 row affected, 1 warning (0.00 sec)
Rows matched: 1 Changed: 1 Warnings: 1
mysql> flush privileges; #立即生效
Query OK, 0 rows affected (0.01 sec)
退出mysql並停止mysql服務
mysql> quit;
Bye
[root@hadoop02 mysql]# systemctl stop mysqld.service
編輯/etc/my.cnf配置檔案將：skip-grant-tables這一行註釋掉 ,並重啟mysql服務
[root@hadoop02 mysql]# vim /etc/my.cnf [root@hadoop02 mysql]# systemctl start mysqld.service
再次登入mysql
[root@hadoop02 mysql]# mysql -uroot -p123456
重新重設密碼
ALTER USER USER() IDENTIFIED BY '123456';
如果出現如下錯誤：
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY '123456'; ERROR 1819 (HY000): Your password does not satisfy the current policy requirements
是密碼的複雜度不符合預設規定，檢視密碼得設定策略
mysql> SHOW VARIABLES LIKE 'validate_password%';
+--------------------------------------+-------+
| Variable_name | Value |
+--------------------------------------+-------+
| validate_password_check_user_name | OFF |
| validate_password_dictionary_file | | #指定密碼驗證的檔案路徑
| validate_password_length | 6 | #固定密碼的總長度；
| validate_password_mixed_case_count | 1 | # 整個密碼中至少要包含大/小寫字母的總個數
| validate_password_number_count | 1 | #整個密碼中至少要包含阿拉伯數字的個數
| validate_password_policy | LOW | #指定密碼的強度驗證等級，預設為 MEDIUM
| validate_password_special_char_count | 1 |
+--------------------------------------+-------+
設定密碼的驗證強度等級，設定 validate_password_policy 的全域性引數為 LOW
set global validate_password_policy=LOW; #只驗證密碼得長度
set global validate_password_length=6; #密碼驗證得長度修改成功
開啟mysql遠端訪問
grant all privileges on *.* to 'root'@'%' identified by '123123' with grant option;
by後面的就是遠端登入密碼，遠端登入密碼可以和使用者密碼不一樣