linux 利用yum源安装mysql5.7
前言
- CentOS 7
- MySQL 5.7
- 查找mysql源 http://repo.mysql.com
步骤
添加mysql源
shell> rpm -ivh http://repo.mysql.com/mysql57-community-release-el7-10.noarch.rpm Retrieving http://repo.mysql.com/mysql57-community-release-el7-10.noarch.rpm Preparing... ################################# [100%] Updating / installing...1:mysql57-community-release-el7-10 ################################# [100%]注：卸载mysql源
rpm -e --nodeps mysql57-community-release-el7-10.noarch查看mysql源中的mysql版本
shell> yum info mysql-community-server Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile Installed Packages Name : mysql-community-server Arch : x86_64 Version : 5.7.27 Release : 1.el7 Size : 746 M Repo : installed From repo : mysql57-community Summary : A very fast and reliable SQL database server URL : http://www.mysql.com/ License : Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights: reserved. Under GPLv2 license as shown in the Description field. Description : The MySQL(TM) software delivers a very fast, multi-threaded,: multi-user, and robust SQL (Structured Query Language) database: server. MySQL Server is intended for mission-critical, heavy-load: production systems as well as for embedding into mass-deployed: software. MySQL is a trademark of Oracle and/or its affiliates:: The MySQL software has Dual Licensing, which means you can use the: MySQL software free of charge under the GNU General Public License: (http://www.gnu.org/licenses/). You can also purchase commercial: MySQL licenses from Oracle and/or its affiliates if you do not: wish to be bound by the terms of the GPL. See the chapter: "Licensing and Support" in the manual for further info.:: The MySQL web site (http://www.mysql.com/) provides the latest: news and information about the MySQL software. Also please see: the documentation and the manual for more information.:: This package includes the MySQL server binary as well as related: utilities to run and administer a MySQL server.安装mysql
shell> yum install mysql-server启动mysql
shell> systemctl start mysqld查看mysql是否启动
shell> ps -ef | grep mysql mysql 26517 1 0 13:13 ? 00:00:00 /usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid root 26578 25533 0 13:13 pts/1 00:00:00 grep --color=auto mysql或
shell> netstat -tlnp | grep mysql tcp6 0 0 :::3306 :::* LISTEN 26517/mysqld设置root账户密码
因为mysql5.7为了安全性的考虑，在安装的时候随机生成了一个初始密码，放在/var/log/mysqld.log文件中。查询/var/log/mysqld.log文件中的初始密码。cat /var/log/mysqld.log | grep password ---------------------------------------- 2019-10-08T03:17:09.602477Z 1 [Note] A temporary password is generated for root@localhost: ,MuwPzvkf0;y初始密码为：
,MuwPzvkf0;y修改root密码为：root
mysql -uroot -p,MuwPzvkf0;y mysql> set password=password('root'); ---------------------------------------- Query OK, 0 rows affected, 1 warning (0.00 sec)在重新设置密码的时候，如果密码强度不够高，会提示不安全，需要重新设置。像
root，123456都无法设置了。MySQL5.6.6版本之后增加了密码强度验证插件validate_password，相关参数设置的较为严格。使用了该插件会检查设置的密码是否符合当前设置的强度规则，若不满足则拒绝设置。影响的语句和函数有：create user,grant,set password,password(),old password。
测试时为了方便，确需设置简单密码时，可以参考 mysql5.7修改root密码 进行设置。
也可以参考：https://blog.csdn.net/u014236541/article/details/78244601和https://www.cnblogs.com/ivictor/p/5142809.html进入mysql
shell> mysql -uroot -proot mysql: [Warning] Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 Server version: 5.7.27 MySQL Community Server (GPL)Copyright (c) 2000, 2019, 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> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | sys | +--------------------+ 4 rows in set (0.00 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 -ADatabase changed 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> quit Bye设置mysql数据编码格式为utf8。
编辑my.cnf
shell> vi /etc/my.cnf在my.cnf中修改内容
[mysqld] character_set_server=utf8重启mysql后，登录mysql查看设置结果：
mysql> SHOW VARIABLES WHERE Variable_name LIKE 'character\_set\_%' OR Variable_name LIKE 'collation%';+--------------------------+-----------------+ | Variable_name | Value | +--------------------------+-----------------+ | character_set_client | utf8 | | character_set_connection | utf8 | | character_set_database | utf8 | | character_set_filesystem | binary | | character_set_results | utf8 | | character_set_server | utf8 | | character_set_system | utf8 | | collation_connection | utf8_general_ci | | collation_database | utf8_general_ci | | collation_server | utf8_general_ci | +--------------------------+-----------------+ 10 rows in set (0.01 sec)执行mysql_secure_installation
安装完mysql-server后，进入生产环境之前，一定要运行一次mysql_secure_installation。运行mysql_secure_installation会执行几个设置：- 为root用户设置密码
- 删除匿名账号
- 取消root用户远程登录
- 删除test库和对test库的访问权限
- 刷新授权表使修改生效
参考：MySQL----mysql_secure_installation 安全配置向导
匿名账户参考：https://www.cnblogs.com/wzzkaifa/p/7000808.html
其它
启动mysql：systemctl start mysqld
停止mysql：systemctl stop mysqld
重启mysql：systemctl restart mysqld
查看mysql状态：systemctl status mysqld
mysql服务开启：systemctl enable mysqld
mysql服务关闭：systemctl disable mysqld
查看mysql服务是否开启：systemctl list-unit-files|grep mysqld
查看mysql版本：mysql -V
my.cnf配置文件读取顺序：mysqld --help --verbose 2> /dev/null | grep -A1 ‘Default options’
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