記一次linux下安裝mysql5.7
1、首先是下載 適應的版本。
地址， https://dev.mysql.com/downloads/mysql/ ， 選擇版本 mysql-5.7.28-1.el6.x86_64.rpm-bundle.tar 。 我下載的是 bundle ，各個文件全包括在內了。node
檢查linux是否已經有自帶的mysql，若是有，刪除掉。mysql
rpm -qa | grep mysql rpm -qa | grep mysql | xargs rpm -e --nodeps
解壓bundle.tar 文件， 執行 rpm -ivh 命令安裝 。若是過程當中，碰到缺庫問題，根據名字手動安裝便可。linux
若是是redhat7/centos7，就用 mysql-5.7.29-1.el7.x86_64.rpm-bundle.tar。在安裝過程當中，會報出lib衝突。解決辦法是，刪除mariadb-libs。sql
[root@master mysql-5.7]# rpm -ivh mysql-community-client-5.7.29-1.el7.x86_64.rpm mysql-community-common-5.7.29-1.el7.x86_64.rpm mysql-community-devel-5.7.29-1.el7.x86_64.rpm mysql-community-libs-5.7.29-1.el7.x86_64.rpm mysql-community-libs-compat-5.7.29-1.el7.x86_64.rpm mysql-community-server-5.7.29-1.el7.x86_64.rpm
warning: mysql-community-client-5.7.29-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
error: Failed dependencies:
mariadb-libs is obsoleted by mysql-community-libs-5.7.29-1.el7.x86_64
mariadb-libs is obsoleted by mysql-community-libs-compat-5.7.29-1.el7.x86_64
[root@master mysql-5.7]# rpm -qa | grep mariadb-libs
mariadb-libs-5.5.64-1.el7.x86_64
[root@master mysql-5.7]# rpm -qa | grep mariadb-libs | xargs rpm -e --nodeps
[root@master mysql-5.7]# rpm -qa | grep mariadb-libs
[root@master mysql-5.7]# rpm -ivh mysql-community-client-5.7.29-1.el7.x86_64.rpm mysql-community-common-5.7.29-1.el7.x86_64.rpm mysql-community-devel-5.7.29-1.el7.x86_64.rpm mysql-community-libs-5.7.29-1.el7.x86_64.rpm mysql-community-libs-compat-5.7.29-1.el7.x86_64.rpm mysql-community-server-5.7.29-1.el7.x86_64.rpm
warning: mysql-community-client-5.7.29-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing... ################################# [100%]
Updating / installing...
1:mysql-community-common-5.7.29-1.e################################# [ 17%]
2:mysql-community-libs-5.7.29-1.el7################################# [ 33%]
3:mysql-community-client-5.7.29-1.e################################# [ 50%]
4:mysql-community-server-5.7.29-1.e################################# [ 67%]
5:mysql-community-devel-5.7.29-1.el################################# [ 83%]
6:mysql-community-libs-compat-5.7.2################################# [100%]
2、啓動
service mysqld start centos
若是是centos7，使用 systemctl 命令。session
[root@master mysql-5.7]# systemctl start mysqld
使用 mysql -u root -p 登陸，提示要密碼。在 /var/log/mysql.log 找到初始的密碼。ui
cat /var/log/mysqld.log | grep password
再次登陸便可。this
3、首次修改密碼
按照提示 必需要用 ALTER USER 的語法。centos7
mysql> ALTER USER USER() IDENTIFIED BY 'Root1234@Root'; Query OK, 0 rows affected (0.00 sec)
查看密碼的設置要求。spa
mysql> SHOW VARIABLES LIKE 'vali%'; +--------------------------------------+--------+
| Variable_name | Value |
+--------------------------------------+--------+
| validate_password_check_user_name | OFF |
| validate_password_dictionary_file | |
| validate_password_length | 8 |
| validate_password_mixed_case_count | 1 |
| validate_password_number_count | 1 |
| validate_password_policy | MEDIUM |
| validate_password_special_char_count | 1 |
+--------------------------------------+--------+
7 rows in set (0.01 sec)
自定義以上要求，下降密碼的複雜度。
mysql> set global validate_password_policy=0; Query OK, 0 rows affected (0.00 sec) mysql> set global validate_password_special_char_count = 0
-> ; Query OK, 0 rows affected (0.00 sec) mysql> set global validate_password_length=4
-> ; Query OK, 0 rows affected (0.01 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)
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> mysql> mysql> show tables; +---------------------------+
| Tables_in_mysql |
+---------------------------+
| columns_priv |
| db |
| engine_cost |
| event |
| func |
| general_log |
| gtid_executed |
| help_category |
| help_keyword |
| help_relation |
| help_topic |
| innodb_index_stats |
| innodb_table_stats |
| ndb_binlog_index |
| plugin |
| proc |
| procs_priv |
| proxies_priv |
| server_cost |
| servers |
| slave_master_info |
| slave_relay_log_info |
| slave_worker_info |
| slow_log |
| tables_priv |
| time_zone |
| time_zone_leap_second |
| time_zone_name |
| time_zone_transition |
| time_zone_transition_type |
| user |
+---------------------------+
31 rows in set (0.00 sec) mysql> desc user; +------------------------+-----------------------------------+------+-----+-----------------------+-------+
| Field | Type | Null | Key | Default | Extra |
+------------------------+-----------------------------------+------+-----+-----------------------+-------+
| Host | char(60) | NO | PRI | | |
| User | char(32) | NO | PRI | | |
| Select_priv | enum('N','Y') | NO | | N | |
| Insert_priv | enum('N','Y') | NO | | N | |
| Update_priv | enum('N','Y') | NO | | N | |
| Delete_priv | enum('N','Y') | NO | | N | |
| Create_priv | enum('N','Y') | NO | | N | |
| Drop_priv | enum('N','Y') | NO | | N | |
| Reload_priv | enum('N','Y') | NO | | N | |
| Shutdown_priv | enum('N','Y') | NO | | N | |
| Process_priv | enum('N','Y') | NO | | N | |
| File_priv | enum('N','Y') | NO | | N | |
| Grant_priv | enum('N','Y') | NO | | N | |
| References_priv | enum('N','Y') | NO | | N | |
| Index_priv | enum('N','Y') | NO | | N | |
| Alter_priv | enum('N','Y') | NO | | N | |
| Show_db_priv | enum('N','Y') | NO | | N | |
| Super_priv | enum('N','Y') | NO | | N | |
| Create_tmp_table_priv | enum('N','Y') | NO | | N | |
| Lock_tables_priv | enum('N','Y') | NO | | N | |
| Execute_priv | enum('N','Y') | NO | | N | |
| Repl_slave_priv | enum('N','Y') | NO | | N | |
| Repl_client_priv | enum('N','Y') | NO | | N | |
| Create_view_priv | enum('N','Y') | NO | | N | |
| Show_view_priv | enum('N','Y') | NO | | N | |
| Create_routine_priv | enum('N','Y') | NO | | N | |
| Alter_routine_priv | enum('N','Y') | NO | | N | |
| Create_user_priv | enum('N','Y') | NO | | N | |
| Event_priv | enum('N','Y') | NO | | N | |
| Trigger_priv | enum('N','Y') | NO | | N | |
| Create_tablespace_priv | enum('N','Y') | NO | | N | |
| ssl_type | enum('','ANY','X509','SPECIFIED') | NO | | | |
| ssl_cipher | blob | NO | | NULL | |
| x509_issuer | blob | NO | | NULL | |
| x509_subject | blob | NO | | NULL | |
| max_questions | int(11) unsigned | NO | | 0 | |
| max_updates | int(11) unsigned | NO | | 0 | |
| max_connections | int(11) unsigned | NO | | 0 | |
| max_user_connections | int(11) unsigned | NO | | 0 | |
| plugin | char(64) | NO | | mysql_native_password | |
| authentication_string | text | YES | | NULL | |
| password_expired | enum('N','Y') | NO | | N | |
| password_last_changed | timestamp | YES | | NULL | |
| password_lifetime | smallint(5) unsigned | YES | | NULL | |
| account_locked | enum('N','Y') | NO | | N | |
+------------------------+-----------------------------------+------+-----+-----------------------+-------+
45 rows in set (0.00 sec) mysql> select Host,User,authentication_string from user; +-----------+---------------+-------------------------------------------+
| Host | User | authentication_string |
+-----------+---------------+-------------------------------------------+
| localhost | root | *1E0532C5DAF747138FB6C69FE370B6213B6EE5E4 |
| localhost | mysql.session | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE |
| localhost | mysql.sys | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE |
+-----------+---------------+-------------------------------------------+
3 rows in set (0.00 sec)
mysql> update user set host='%' where User='root'; Query OK, 1 row affected (0.00 sec) Rows matched: 1 Changed: 1 Warnings: 0
mysql> update user set authentication_string=PASSWORD('root123') where User='root'; Query OK, 1 row affected, 1 warning (0.00 sec) Rows matched: 1 Changed: 1 Warnings: 1 mysql> select Host,User,authentication_string from user; +-----------+---------------+-------------------------------------------+
| Host | User | authentication_string |
+-----------+---------------+-------------------------------------------+
| % | root | *FAAFFE644E901CFAFAEC7562415E5FAEC243B8B2 |
| localhost | mysql.session | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE |
| localhost | mysql.sys | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE |
+-----------+---------------+-------------------------------------------+
3 rows in set (0.00 sec)
到這裏， 修改密碼完成。最後要重啓mysql服務，才生效。
[root@master mysql-5.7]# systemctl status mysqld
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