版本：5.7.18

下載地址：?https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.18-macos10.12-x86_64.tar.gz

平臺版本：macos10.12.3

第一步：清理之前的mysql安裝痕跡,需要執行以下命令

執行命令

sudo rm -rf /usr/local/mysql

sudo rm -rf /usr/local/mysql*

sudo rm -rf /Library/StartupItems/MySQLCOM

sudo rm -rf /Library/PreferencePanes/My*

sudo rm -rf ~/Library/PreferencePanes/My*

sudo rm -rf /Library/Receipts/mysql*

sudo rm -rf /Library/Receipts/MySQL*

sudo rm -rf /var/db/receipts/com.mysql.*

文件操作

vim /etc/hostconfig (將MYSQLCOM=-YES-這一行刪除)

第二步：清理/usr/local/下的mysql命令，這些命令有優先的執行權，如果不刪除的話會影響之后命令環境配置

sudo rm /usr/local/bin/mysql*

sudo rm /usr/local/bin/my_print_defaults

sudo rm /usr/local/bin/myisam*

sudo rm /usr/local/bin/perror

sudo rm /usr/local/bin/replace

sudo rm /usr/local/bin/resolve_stack_dump

sudo rm /usr/local/bin/resolveip

sudo rm /usr/local/bin/msql2mysql

第三步：解壓縮mysql-5.7.18-macos10.12-x86_64.tar.gz文件，并將其中的內容放入/usr/local/mysql/目錄下

第四步：給新生成的mysql設置權限，這會影響mysql的初始化流程是否走通，由于我是在做開發環境，所以我將其權限設置為最大

sudo chmod -R 777 /usr/local/mysql

第五步：初始化mysql,執行以下命令

cd /usr/local/mysql/bin

./mysqld --initialize --user=mysql

輸出結果為

2017-04-20T10:15:41.408826Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).

2017-04-20T10:15:41.411759Z 0 [Warning] Setting lower_case_table_names=2 because file system for /usr/local/mysql/data/ is case insensitive

2017-04-20T10:15:41.412785Z 0 [Warning] One can only use the --user switch if running as root

2017-04-20T10:15:41.819065Z 0 [Warning] InnoDB: New log files created, LSN=45790

2017-04-20T10:15:41.902064Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.

2017-04-20T10:15:41.971616Z 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: 4f1bc424-25b2-11e7-ba18-1ea9f4cc2140.

2017-04-20T10:15:42.023595Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.

2017-04-20T10:15:42.038661Z 1 [Note] A temporary password is generated for root@localhost: 2=rvdin9kp6E

這時需要記錄root@localhost: 2=rvdin9kp6E這一信息，2=rvdin9kp6E是mysql隨機生成的root的初始密碼，待會需要根據該密碼重置root的密碼

在這一步可能會出現錯誤

mysqld: Can't change dir to '/usr/local/mysql/data/' (Errcode: 2 - No such f....

這是需要在/usr/local/mysql目錄下創建子目錄data

第六步：啟動mysql

cd /usr/local/mysql/support-files

./mysql.server start

第七步：設置環境變量

vi ~/.bash_profile

然后在文件的最后一行添加

export PATH=$PATH:/usr/local/mysql/bin

然后通過以下命令使環境變量生效

source ~/.bash_profile

第八步：重置root密碼

mysqladmin -u root -p password root

此處會提示輸入密碼，將剛才mysql生成的初始密碼輸入就行了，執行完后，root賬號的密碼就會被設置為root

第九步：登錄mysql

mysql -u root -p

然后輸入剛剛重置的密碼root，就能登錄mysql了

第十步：設置mysql自啟動

添加mysql自啟動腳本

sudo vi /Library/LaunchDaemons/com.mysql.mysql.plist

添加如下信息

KeepAlive

Label

com.mysql.mysqld

ProgramArguments

/usr/local/mysql/bin/mysqld_safe

--user=root

然后加載該腳本

sudo launchctl load -w /Library/LaunchDaemons/com.mysql.mysql.plist

總結

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