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环境: 虚拟机 +CentOS 7
1. 下载二进制包,下面 mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz 链接是官网
cd /usr/local/srcwget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz2. 解压,改名
[root@beta src]# tar zxvf mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz[root@beta src]# ls index.html?id=471614 mysql-5.7.19-linux-glibc2.12-x86_64 mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz [root@beta src]# mv mysql-5.7.19-linux-glibc2.12-x86_64 /usr/local/mysql3. 初始化
[root@beta mysql]# useradd -M -s /sbin/nologin mysql[root@beta mysql]# ls bin COPYING docs include lib man README share support-files [root@beta mysql]# mkdir -p /usr/local/mysql/data/mysql [root@beta mysql]# chown mysql /usr/local/mysql/data/mysql下面这步注意最后一句:
[root@beta mysql]# ./bin/mysqld --initialize --user=mysql --datadir=/usr/local/mysql/data/mysql 2017-09-27T03:44:47.999985Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2017-09-27T03:44:49.011240Z 0 [Warning] InnoDB: New log files created, LSN=457902017-09-27T03:44:49.180334Z 0 [Warning] InnoDB: Creating foreign key constraint system tables. 2017-09-27T03:44:49.245777Z 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: 3649ce8c-a336-11e7-a43f-000c292b2832. 2017-09-27T03:44:49.266053Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened. 2017-09-27T03:44:49.268172Z 1 [Note] A temporary password is generated for root@localhost: ADB&yGx-d8abADB&yGx-d8ab 是密码 接着执行:
[root@beta mysql]# ./bin/mysql_ssl_rsa_setup --datadir=usr/local/mysql/data/mysql Generating a 2048 bit RSA private key ......................+++ ...+++ writing new private key to 'ca-key.pem'----- Generating a 2048 bit RSA private key .........................+++ ...............................................................................+++ writing new private key to 'server-key.pem'----- Generating a 2048 bit RSA private key ....................+++ .......................+++ writing new private key to 'client-key.pem'4. 拷贝配置文件和启动脚本
先检查是否有 /etc/my.cnf, 如果没有
cp support-files/my-default.cnf /etc/my.cnf编辑 /etc/my.cnf, 重点修改下面几个,其他的尽量注释掉:
basedir = /usr/local/mysql datadir = //usr/local/mysql/data/mysql socket = /tmp/mysql.sock2. 启动脚本
cp support-files/mysql.server /etc/init.d/mysqld编辑 /etc/init.d/mysqld,只修改下面几个:
basedir=/usr/local/mysql datadir=/data/mysql将 /etc/init.d/mysqld 加入启动项:
[root@beta mysql]# chkconfig --add mysqld [root@beta mysql]# chkconfig --list 注意:该输出结果只显示 SysV 服务,并不包含原生 systemd 服务。SysV 配置数据可能被原生 systemd 配置覆盖。 如果您想列出 systemd 服务, 请执行 'systemctl list-unit-files'。 欲查看对特定 target 启用的服务请执行 'systemctl list-dependencies [target]'。 mysqld 0: 关 1: 关 2: 开 3: 开 4: 开 5: 开 6: 关 netconsole 0: 关 1: 关 2: 关 3: 关 4: 关 5: 关 6: 关 network 0: 关 1: 关 2: 开 3: 开 4: 开 5: 开 6: 关 5. 启动服务
/etc/init.d/mysqld start6. 设置 root 密码
用初始密码登陆(见上面第 3 步)
/usr/local/mysql/bin/mysql -uroot -p‘初始密码’#- p 和’’不能隔开 出现 mysql> 的时候,输入 set password = password(‘ 新密码 ’);
退出,用新密码登陆
2. 忘记初始密码
给 /etc/my.cnf/[mysqld] 下面增加一行 skip-grant-tables, 重启 mysqld:/etc/init.d/mysqld restart
[mysqld] skip-grant-tables basedir=/usr/local/mysql datadir=/usr/local/mysql/data/mysql socket=/tmp/mysql.sock [root@beta ~]# /etc/init.d/mysqld restart Shutting down MySQL.. SUCCESS! Starting MySQL.. SUCCESS!重新登录 mysql:
[root@beta ~]# /usr/local/mysql/bin/mysql -urootmysql> 后输入:update mysql.user set authentication_string=password(‘123333′) where user=’root’;
mysql> update mysql.user set authentication_string=password('123333') where user='root'; Query OK, 1 row affected, 1 warning (0.00 sec) Rows matched: 1 Changed: 1 Warnings: 1退出,删除 my.cnf 加入的 skip-grant-tables,重启 mysqld
新密码重新登录 mysql:
[root@beta ~]# /usr/local/mysql/bin/mysql -uroot -p'123333'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 13Server version: 5.7.19 MySQL Community Server (GPL) Copyright (c) 2000, 2017, 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>
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