目录
- 1.下载安装
- 2.配置环境变量
- 3.mysql 配置文件
- 4.两种启动 mysql 的方式
- 5.初始化配置及修改密码
- 6.brew 安装 mysql（未检验）
一.下载安装
1.官网下载2.找到5.7.31版本3.选择直接下载4.安装5.记下数据库临时密码，一路下一步完成安装下载地址：https://dev.mysql.com/downloads/mysql/
二.配置环境变量
1.在 terminal 中切换到用户的根目录，编辑./.bash_profile 文件eternity@TheEternitydeMacBook-Pro ~ % cd ~eternity@TheEternitydeMacBook-Pro ~ % pwd/Users/eternityeternity@TheEternitydeMacBook-Pro ~ % vim ./.bash_profileexport PATH=$PATH:/usr/local/mysql/binexport PATH=$PATH:/usr/local/mysql/support-files 备注： 第一行的是为了 mysql -u root -p 方便使用 第二行的是为了使用命令行启动停止数据库使用:wqeternity@TheEternitydeMacBook-Pro ~ % source ~/.bash_profile eternity@TheEternitydeMacBook-Pro ~ % echo $PATH /usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/mysql/bin:/usr/local/mysql/support-fileseternity@TheEternitydeMacBook-Pro /etc % mysql --versionmysql Ver 14.14 Distrib 5.7.31, for macos10.14 (x86_64) using EditLine wrapper三.mysql 配置文件
1.在/etc 目录下新建 my.cnf 配置文件，并赋予读写权限eternity@TheEternitydeMacBook-Pro /etc % sudo touch my.cnfPassword:eternity@TheEternitydeMacBook-Pro /etc % ls|grep cnf my.cnfeternity@TheEternitydeMacBook-Pro /etc % sudo chmod 777 my.cnf # Example MySQL config file for medium systems.## This is for a system with little memory (32M - 64M) where MySQL plays# an important part, or systems up to 128M where MySQL is used together with# other programs (such as a web server)## MySQL programs look for option files in a set of# locations which depend on the deployment platform.# You can copy this option file to one of those# locations. For information about these locations, see:# http://dev.mysql.com/doc/mysql/en/option-files.html## In this file, you can use all long options that a program supports.# If you want to know which options a program supports, run the program# with the "--help" option.# The following options will be passed to all MySQL clients[client]default-character-set=utf8#password = your_passwordport = 3306socket = /tmp/mysql.sock# Here follows entries for some specific programs# The MySQL server[mysqld]character-set-server=utf8init_connect='SET NAMES utf8port = 3306socket = /tmp/mysql.sockskip-external-lockingkey_buffer_size = 16Mmax_allowed_packet = 1Mtable_open_cache = 64sort_buffer_size = 512Knet_buffer_length = 8Kread_buffer_size = 256Kread_rnd_buffer_size = 512Kmyisam_sort_buffer_size = 8Mcharacter-set-server=utf8init_connect='SET NAMES utf8'# Don't listen on a TCP/IP port at all. This can be a security enhancement,# if all processes that need to connect to mysqld run on the same host.# All interaction with mysqld must be made via Unix sockets or named pipes.# Note that using this option without enabling named pipes on Windows# (via the "enable-named-pipe" option) will render mysqld useless!##skip-networking# Replication Master Server (default)# binary logging is required for replicationlog-bin=mysql-bin# binary logging format - mixed recommendedbinlog_format=mixed# required unique id between 1 and 2^32 - 1# defaults to 1 if master-host is not set# but will not function as a master if omittedserver-id = 1# Replication Slave (comment out master section to use this)## To configure this host as a replication slave, you can choose between# two methods :## 1) Use the CHANGE MASTER TO command (fully described in our manual) -# the syntax is:## CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,# MASTER_USER=<user>, MASTER_PASSWORD=<password> ;## where you replace <host>, <user>, <password> by quoted strings and# <port> by the master's port number (3306 by default).## Example:## CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,# MASTER_USER='joe', MASTER_PASSWORD='secret';## OR## 2) Set the variables below. However, in case you choose this method, then# start replication for the first time (even unsuccessfully, for example# if you mistyped the password in master-password and the slave fails to# connect), the slave will create a master.info file, and any later# change in this file to the variables' values below will be ignored and# overridden by the content of the master.info file, unless you shutdown# the slave server, delete master.info and restart the slaver server.# For that reason, you may want to leave the lines below untouched# (commented) and instead use CHANGE MASTER TO (see above)## required unique id between 2 and 2^32 - 1# (and different from the master)# defaults to 2 if master-host is set# but will not function as a slave if omitted#server-id = 2## The replication master for this slave - required#master-host = <hostname>## The username the slave will use for authentication when connecting# to the master - required#master-user = <username>## The password the slave will authenticate with when connecting to# the master - required#master-password = <password>## The port the master is listening on.# optional - defaults to 3306#master-port = <port>## binary logging - not required for slaves, but recommended#log-bin=mysql-bin# Uncomment the following if you are using InnoDB tables#innodb_data_home_dir = /usr/local/mysql/data#innodb_data_file_path = ibdata1:10M:autoextend#innodb_log_group_home_dir = /usr/local/mysql/data# You can set .._buffer_pool_size up to 50 - 80 %# of RAM but beware of setting memory usage too high#innodb_buffer_pool_size = 16M#innodb_additional_mem_pool_size = 2M# Set .._log_file_size to 25 % of buffer pool size#innodb_log_file_size = 5M#innodb_log_buffer_size = 8M#innodb_flush_log_at_trx_commit = 1#innodb_lock_wait_timeout = 50[mysqldump]quickmax_allowed_packet = 16M[mysql]no-auto-rehash# Remove the next comment character if you are not familiar with SQL#safe-updatesdefault-character-set=utf8[myisamchk]key_buffer_size = 20Msort_buffer_size = 20Mread_buffer = 2Mwrite_buffer = 2M[mysqlhotcopy]interactive-timeout简易版
[mysqld]default-storage-engine=INNODBcharacter-set-server=utf8port = 3306[client]default-character-set=utf8eternity@TheEternitydeMacBook-Pro /etc % ls -l|grep cnf-rwxrwxrwx 1 root wheel 4886 8 17 10:09 my.cnfeternity@TheEternitydeMacBook-Pro /etc % sudo chmod 644 my.cnfeternity@TheEternitydeMacBook-Pro /etc % ls -l|grep cnf -rw-r--r-- 1 root wheel 4886 8 17 10:09 my.cnf四.两种启动 mysql 的方式
1.一键启动。偏好设置下一键启动
①.找到 mysql 服务②.启动 mysql3.启动完成的状态2.命令行启动
启动MySQL服务sudo mysql.server start停止MySQL服务sudo mysql.server stop重启MySQL服务sudo mysql.server restart查看MySQL服务状态sudo mysql.server status备注：
注意：如果出现 ERROR! MySQL server PID file could not be found!，或者ERROR! The server quit without updating PID file (/usr/local/mysql/data/maxdeMacBook-Pro.local.pid). 可能是因为没有/usr/local/mysql/data/文件夹读写权限，如果遇到该问题，执行sudo chown -R mysql:mysql /usr/local/mysql/data/*即可。五.初始化配置及修改密码
eternity@TheEternitydeMacBook-Pro /etc % sudo mysql.server startPassword:Starting MySQL.Logging to '/usr/local/mysql/data/TheEternitydeMacBook-Pro.local.err'. SUCCESS! eternity@TheEternitydeMacBook-Pro /etc % mysql -u root -pEnter password: Welcome to the MySQL monitor. Commands end with ; or g.Your MySQL connection id is 22Server version: 5.7.31-logCopyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or itsaffiliates. Other names may be trademarks of their respectiveowners.Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.mysql> update user set authentication_string=password('123456') where user='root';Query OK, 0 rows affected, 1 warning (0.01 sec)mysql> exitBye六.使用homebrew安装mysql及遇到的问题
-
安装命令
brew install mysql -
安装完成之后，本地命令行输入mysql命令，发现无此命令
commond not found -
首先，检查是否是安装了
重新执行一遍 brew install mysql命令行提示：Warning: mysql-5.7.10 already installed, it's just not linked -
然后网上查找解决方法，最后解决方法是执行：
brew link --overwrite mysql -
但是执行，却报错
linking /usr/local/Cellar/mysql/5.7.10... Error: Could not symlink share/man/man8/mysqld.8/usr/local/share/man/man8 is not writable. -
又在网上各种查找解决方法，最后本地实验以下语句执行成功
sudo chown -R 'yin' /usr/local注意： yin是你电脑的用户名 -
解决了问题后，重新执行：
brew link --overwrite mysql提示：linking /usr/local/Cellar/mysql/5.7.10... 92 symlinks created心想着，这下算是成功了吧。重新执行:
mysql -u root -p但是又报错：
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)依次执行：
unset TMPDIRbash mysql_install_db --verbose --user=root--basedir="$(brew --prefix mysql)"--datadir=/usr/local/var/mysql --tmpdir=/tmp接下来启动mysqlbash mysql.server start
