# 2. 安装流程 ## 2.1. 确定平台版本和机器位数。 确定当前MYSQL版本对应各种操作系统 平台是否支持。 [https://www.mysql.com/support/supportedplatforms/database.html](https://www.mysql.com/support/supportedplatforms/database.html ) ## 2.2. 下载对应版本 ### 2.2.1. 下载二进制安装包  官方网站  http://dev.mysql.com/downloads/mirrors.html.  进入后可以选择对应的版本 > NOTE: tar.gz tar.xz 为二进制安装。 RPM 为rpm 安装包。 deb 为 deband linux 安装包. PKG 为mac 文件安装包。 ### 2.2.2. 下载yum 源配置包（社区版） [https://dev.mysql.com/downloads/repo/yum/](https://dev.mysql.com/downloads/repo/yum/) ### 2.2.3. 下载源码编译  源码现目前在GIT 上托管。 ## 2.3. 验证下载后文件是否正确 * LINUX AND WINDOWS MD5 验证 ```sh shell> md5sum mysql-standard-8.0.13-linux-i686.tar.gz aaab65abbec64d5e907dcd41b8699945 mysql-standard-8.0.13-linux-i686.tar.gz ``` ```sh shell> md5.exe mysql-installer-community-8.0.13.msi aaab65abbec64d5e907dcd41b8699945 mysql-installer-community-8.0.13.msi ``` * RPM 包验证 ```sh shell> rpm --checksig MySQL-server-8.0.13-0.linux_glibc2.5.i386.rpm MySQL-server-8.0.13-0.linux_glibc2.5.i386.rpm: md5 gpg OK ``` # 3. 二进制部署 > NOTE: 使用二进制安装这种模式不同于yum 安装自动分析相关依赖包。必须首先移除mariadb或者以前的安装过mysql 的配置文件。例如/etc/my.conf. * 卸载mariadb ```sh shell> yum remove mariadb* ``` * 安装依赖包 ```sh shell> yum search libaio # search for info shell> yum install libaio # install library ``` ## 3.1. 安装目录说明 ## 3.2. 安装MySQL ### 3.2.1. 创建MySQL用户和组 ```sh shell> groupadd mysql shell> useradd -r -g mysql -s /bin/false mysql ``` ### 3.2.2. 解压软件 ```sh shell> cd /usr/local shell> tar zxvf /path/to/mysql-VERSION-OS.tar.gz shell> gunzip < /path/to/mysql-VERSION-OS.tar.gz | tar xvf - ``` ### 3.2.3. 创建新的链接文件到真实目录 ```sh shell> ln -s full-path-to-mysql-VERSION-OS mysql ``` ### 3.2.4. 设置环境变量 ```sh shell> export PATH=$PATH:/usr/local/mysql/bin ``` ### 3.2.5. 配置启动目录 ```sh shell> cd mysql shell> mkdir mysql-files shell> chown mysql:mysql mysql-files shell> chmod 750 mysql-files ``` ### 3.2.6. 初始化数据库 ```sh shell> bin/mysqld --initialize --user=mysql ``` #### 3.2.6.1. 初始化数据库两种方式 ```sh shell> bin/mysqld --initialize --user=mysql shell> bin/mysqld --initialize-insecure --user=mysql ``` NOTE: >两种初始化方式第一种必须强制使用密码登录 第二种方式可以使用跳过密码 ` shell> mysql -u root --skip-password ` 然后更改对应密码 ` mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'new_password'; ` 在mysql 8.0 默认加密的密码已经改了。现在默认使用caching_sha2_password 加密方式。 如果还需使用默认的mysql_native_password 加密方式的话使用默认 模式。 初始化的时候，默认路径为/usr/local/mysql #### 3.2.6.2. 更改默认路径 * 如果要改变安装目录使用以下目录： ```sh shell> bin/mysqld --initialize --user=mysql --basedir=/opt/mysql/mysql --datadir=/opt/mysql/mysql/data ``` * 配置文件 ```sh [mysqld] basedir=/opt/mysql/mysql datadir=/opt/mysql/mysql/data ``` * 使用配置文件指定位置: * 范例 ```sh shell> bin/mysqld --initialize-insecure --user=mysql \ --basedir=/app/mysql \ --datadir=/app/mysql/mysql-files ``` * 输出日志： ```sh [root@mysql1 mysql]# bin/mysqld --initialize-insecure --user=mysql \ > --basedir=/app/mysql \ > --datadir=/app/mysql/mysql-files 2018-09-28T16:18:32.178288Z 0 [System] [MY-013169] [Server] /app/mysql-commercial-8.0.12-el7-x86_64/bin/mysqld (mysqld 8.0.12-commercial) initializing of server in progress as process 5328 2018-09-28T16:18:46.268910Z 5 [Warning] [MY-010453] [Server] root@localhost is created with an empty password ! Please consider switching off the --initialize-insecure option. 2018-09-28T16:18:57.082553Z 0 [System] [MY-013170] [Server] /app/mysql-commercial-8.0.12-el7-x86_64/bin/mysqld (mysqld 8.0.12-commercial) initializing of server has completed ``` ### 3.2.7. 创建安全连接 #### 3.2.7.1. 说明 | **Format** | **Description** | | --- | --- | | [--datadir](file:///D:/refman-8.0-en.html-chapter/programs.html#option_mysql_ssl_rsa_setup_datadir) | Path to data directory | | [--help](file:///D:/refman-8.0-en.html-chapter/programs.html#option_mysql_ssl_rsa_setup_help) | Display help message and exit | | [--suffix](file:///D:/refman-8.0-en.html-chapter/programs.html#option_mysql_ssl_rsa_setup_suffix) | Suffix for X509 certificate Common Name attribute | | [--uid](file:///D:/refman-8.0-en.html-chapter/programs.html#option_mysql_ssl_rsa_setup_uid) | Name of effective user to use for file permissions | | [--verbose](file:///D:/refman-8.0-en.html-chapter/programs.html#option_mysql_ssl_rsa_setup_verbose) | Verbose mode | | [--version](file:///D:/refman-8.0-en.html-chapter/programs.html#option_mysql_ssl_rsa_setup_version) | Display version information and exit | #### 3.2.7.2. 默认目录 ```sh shell> bin/mysql_ssl_rsa_setup ``` #### 3.2.7.3. 指定目录 ```sh bin/mysql_ssl_rsa_setup --datadir=/app/mysql/mysql-files/ ``` ----------------------到此安装完毕----------------------------------- # 4. YUM 源安装 a. 去下载MySQL 的repo 文件：[http://dev.mysql.com/downloads/repo/yum/](http://dev.mysql.com/downloads/repo/yum/) ```sh wget https://dev.mysql.com/get/mysql80-community-release-el7-1.noarch.rpm ``` b. 选择对应操作系统版本的 c. 本地安装 ```sh shell> sudo yum localinstall platform-and-version-specific-package-name.rpm ``` * EL6-based system ```sh shell> sudo yum localinstall mysql80013-community-release-el6-{version-number}.noarch.rpm ``` * EL7-based system: ```sh shell> sudo yum localinstall mysql80013-community-release-el7-{version-number}.noarch.rpm ``` * Fedora 28: ```sh shell> sudo dnf localinstall mysql80013-community-release-fc28-{version-number}.noarch.rpm ``` * Fedora 27: ```sh shell> sudo dnf localinstall mysql80013-community-release-fc27-{version-number}.noarch.rpm ``` * 范例： ```sh yum localinstall mysql80-community-release-el7-1.noarch.rpm ``` * 查看已经启用MySQL 源 ```sh yum repolist enabled | grep "mysql.*-community.*" ``` * 启用集群安装 ```sh mysql-cluster ``` * 查看所有mysql 有关的安装源 ```sh shell> yum repolist all | grep mysql ``` * 开启对应安装yum源 ```sh shell> sudo yum-config-manager --disable mysql57-community shell> sudo yum-config-manager --enable mysql80-community ``` * 例如： 开启集群 ```sh shell> sudo yum-config-manager --enable mysql-cluster-7.6-community ``` * 安装MYSQL ```sh yum install mysql-community-server ``` # 5. 使用RPM 包安装 说明： > 由于企业版只提供二进制和RPM 包方式。。不提供YUM 安装方式。 以下是各个RPM 包的含义： | **Package Name** | **Summary** | | --- | --- | | mysql-commercial-**backup** | MySQL Enterprise Backup (added in 8.0.11) | | mysql-commercial-**client** | MySQL client applications and tools | | mysql-commercial-**common** | Common files for server and client libraries | | mysql-commercial-**devel** | Development header files and libraries for MySQL database client applications | | mysql-commercial-**embedded-compat** | MySQL server as an embedded library with compatibility for applications using version 18 of the library | | mysql-commercial-**libs** | Shared libraries for MySQL database client applications | | mysql-commercial-**libs-compat** | Shared compatibility libraries for previous MySQL installations; the version of the libraries matches the version of the libraries installed by default by the distribution you are using | | mysql-commercial-**minimal-debuginfo** | Debug information for package mysql-commercial-server-minimal; useful when developing applications that use this package or when debugging this package | | mysql-commercial-**server** | Database server and related tools | | mysql-commercial-**server-minimal** | Minimal installation of the database server and related tools (added in 8.0.0) | | mysql-commercial-**test** | Test suite for the MySQL server | 1. 下载对应版本的RPM 包进行解压 ```sh [root@mysql3 ~]# unzip V979091-01.zip Archive: V979091-01.zip extracting: mysql-commercial-libs-8.0.12-1.1.el7.x86_64.rpm extracting: mysql-commercial-embedded-compat-8.0.12-1.1.el7.x86_64.rpm extracting: mysql-commercial-test-8.0.12-1.1.el7.x86_64.rpm extracting: mysql-commercial-server-8.0.12-1.1.el7.x86_64.rpm extracting: mysql-commercial-server-minimal-8.0.12-1.1.el7.x86_64.rpm extracting: mysql-commercial-minimal-debuginfo-8.0.12-1.1.el7.x86_64.rpm extracting: mysql-commercial-devel-8.0.12-1.1.el7.x86_64.rpm extracting: mysql-commercial-client-8.0.12-1.1.el7.x86_64.rpm extracting: mysql-commercial-libs-compat-8.0.12-1.1.el7.x86_64.rpm extracting: mysql-commercial-common-8.0.12-1.1.el7.x86_64.rpm extracting: mysql-commercial-backup-8.0.12-1.1.el7.x86_64.rpm extracting: README.txt ``` 2. 批量自动安装：自动解决依赖包。使用此命令时注意不要和server_mini 混用。 ```sh yum install mysql-commercial-* ``` * 简易服务端 ```sh sudo yum install mysql-community-{server,client,common,libs}-* ``` * 简易客户端 ```sh yum install mysql-community-{client,common,libs}-* ``` * 目录分布 | **Files or Resources** | **Location** | | --- | --- | | Client programs and scripts | /usr/bin | | **[mysqld](file:///D:/refman-8.0-en.html-chapter/programs.html#mysqld "4.3.1 mysqld — The MySQL Server")** server | /usr/sbin | | Configuration file | /etc/my.cnf | | Data directory | /var/lib/mysql | | Error log file | For RHEL, Oracle Linux, CentOS or Fedora platforms: /var/log/mysqld.logFor SLES: /var/log/mysql/mysqld.log | | Value of **[secure\_file\_priv](file:///D:/refman-8.0-en.html-chapter/server-administration.html#sysvar_secure_file_priv)** | /var/lib/mysql-files | | System V init script | For RHEL, Oracle Linux, CentOS or Fedora platforms: /etc/init.d/mysqldFor SLES: /etc/init.d/mysql | | Systemd service | For RHEL, Oracle Linux, CentOS or Fedora platforms: mysqldFor SLES: mysql | | Pid file | /var/run/mysql/mysqld.pid | | Socket | /var/lib/mysql/mysql.sock | | Keyring directory | /var/lib/mysql-keyring | | Unix manual pages | /usr/share/man | | Include (header) files | /usr/include/mysql | | Libraries | /usr/lib/mysql | | Miscellaneous support files (for example, error messages, and character set files) | /usr/share/mysql | ## 5.1. 安装相关组件 列出开启yum 中所有相关的安装包。，包括未enable 中的源 例如主机上要连接低版本客户端。则需要安装低版本客户端如下： ```sh rpm --oldpackage -ivh mysql-community-libs-5.5.50-2.el6.x86_64.rpm ``` > 安装其他软件：到官网下载对应版本安装。 # 6. 启动和关闭 ## 6.1. 使用二进制安装 ```sh shell> bin/mysqld_safe --user=mysql & # 6. Next command is optional ``` ### 6.1.1. 拷贝自启动文件 ```sh shell> cp /app/mysql/support-files/mysql.server /etc/init.d/ ``` ### 6.1.2. 编辑my.cnf 文件 ```sh basedir=/app/mysql datadir=/app/mysql/mysql-files ``` ### 6.1.3. 重载启动项目 ```sh systemctl daemon-reload ``` ### 6.1.4. 查看是否启动MySQL ```sh systemctl status mysql ``` ### 6.1.5. 开机自启动 NOTE: > 由于使用二进制安装,则需要配置chkconfig 。RPM 包不需要 ```sh chkconfig --add mysql.server chkconfig mysql.server on ``` ## 6.2. 使用yum 源安装 ### 6.2.1. 启动MySQL ```sh service mysqld start systemctl start mysqld ``` ### 6.2.2. 查看是否启动MySQL ```sh systemctl status mysqld ``` ### 6.2.3. 开机自启动 ```sh systemctl enable mysqld systemctl disable mysqld ``` ## 6.3. 使用RPM 包安装 ### 6.3.1. 启动MySQL ```sh service mysqld start systemctl start mysqld ``` ### 6.3.2. 查看是否启动MySQL ```sh systemctl status mysqld ``` ### 6.3.3. 开机自启动 ```sh systemctl enable mysqld systemctl disable mysqld ``` # 7. MySQL 启动后诊断 ## 7.1. 查看日志 ```sh tail host_name.err ``` ## 7.2. 选择驱动 默认为InnoDB ## 7.3. 确认数据文件位置是否合适 ## 7.4. 查看所有配置参数和所有的环境变量 ```sh mysqld --basedir=/app/mysql --verbose –help | more ``` ## 7.5. 配置文件环境变量 ```sh mysqladmin variables -u root -p mysqladmin -h host_name variables - u root -p ``` # 8. 测试MySQL * 检查mysql 是否正常运行 ```sh mysqladmin version ``` * 检查配置变量值 ```sh mysqladmin variables ``` * 检查是否能登陆 ```sh mysqladmin -u root -p version ``` * 关闭mysql 服务 ```sh mysqladmin -u root shutdown ``` * 显示mysql 数据库 ```sh mysqlshow ``` * 显示某个数据库中的表 ```sh mysqlshow mysql ``` * shell 界面查询表数据 ```sh mysql -e "SELECT User, Host, plugin FROM mysql.user" mysql ``` NOTE: > 以上命令成功执行后则mysql 数据正常。 # 9. 账户安全 ## 9.1. yum 源安装 * 默认密码： ```sql grep 'temporary password' /var/log/mysqld.log ``` * 登录： ```sh mysql -uroot -p ``` * 更改密码： ```sql ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass4!'; ``` * 由于密码复杂度有相关要求：但是测试不需要则 ```sql mysql> SHOW VARIABLES LIKE 'validate_password%'; +--------------------------------------+--------+ | Variable_name | Value | +--------------------------------------+--------+ | validate_password.check_user_name | ON | | 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) set GLOBAL validate_password.policy=0; 设置密码长度 set GLOBAL validate_password.length=3; ``` * 设置密码复杂度为低。更方便测试。 ```sql ALTER USER 'root'@'localhost' IDENTIFIED BY '1234'; ``` ## 9.2. 二进制安装 * 使用mysqld --insecure初始化后的密码更改 ```sql mysql -u root -p ALTER USER 'root'@'localhost' IDENTIFIED BY 'new_password'; ``` * 如果使用mysqld --initialize-insecure 进行初始化 则： ```sh mysql -u root --skip-password ``` * 更改密码： ```sql ALTER USER 'root'@'localhost' IDENTIFIED BY '123' ``` ## 9.3. RPM 包安装 * 默认密码： ```sh grep 'temporary password' /var/log/mysqld.log ``` * 登录： ```sh mysql -uroot -p ``` * 更改密码： ```sql ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass4!'; ``` * 由于密码复杂度有相关要求：但是测试不需要则 ```sql mysql> SHOW VARIABLES LIKE 'validate_password%'; +--------------------------------------+--------+ | Variable_name | Value | +--------------------------------------+--------+ | validate_password.check_user_name | ON | | 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) mysql> set GLOBAL validate_password.policy=0; mysql> set GLOBAL validate_password.length=3; ``` * 设置密码复杂度为低。更方便测试。 ```sh ALTER USER 'root'@'localhost' IDENTIFIED BY '1234'; ``` # 10. 附录 ## 10.1. 忘记root 密码 * 方法1： ```sh kill `cat /mysql-data-directory/host_name.pid` ``` * 把以下语句保存到文件中 ```sql ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass'; ``` 例如：/root/mysql-init * 开始改变密码 ```sh mysqld --init-file=/home/me/mysql-init & ``` mysql 服务会自动启动。 * 然后删除保存密码的文件。 方法2： 添加my.cnf 选项 ``` skip-grant-tables: ``` * 重启MySQL * 更改密码 ```sql mysql update user set password=password("new_pass") where user="root"; FLUSH PRIVILEGES; ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass'; ```