mac上安裝mysql

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：清理以前的mysql安裝痕跡,須要執行如下命令

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.*
文件操做
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，若是不刪除的話會影響以後命令環境配置

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，並將其中的內容放入/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，因爲我是在作開發環境，因此我將其權限設置爲最大

sudo chmod -R 777 /usr/local/mysql

第五步：初始化mysql,執行如下命令

cd /usr/local/mysql/bin
./mysqld --initialize --user=mysql

輸出結果爲
 

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

這時須要記錄root@localhost: 2=rvdin9kp6E這一信息，2=rvdin9kp6E是mysql隨機生成的root的初始密碼，待會須要根據該密碼重置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....

這是須要在/usr/local/mysql目錄下建立子目錄data

第六步：啓動mysql

cd /usr/local/mysql/support-files
./mysql.server start

第七步：設置環境變量

vi ~/.bash_profile

 而後在文件的最後一行添加

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

而後經過如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，將剛纔mysql生成的初始密碼輸入就好了，執行完後，root帳號的密碼就會被設置爲root

第九步：登陸mysql

mysql -u root -p

而後輸入剛剛重置的密碼root，就能登陸mysql了

第十步：設置mysql自啓動

添加mysql自啓動腳本

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

添加以下信息

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/D    TDs/PropertyList-1.0.dtd">
<plist version="1.0">
  <dict>
     <key>KeepAlive</key>
     <true/>
     <key>Label</key>
     <string>com.mysql.mysqld</string>
     <key>ProgramArguments</key>
     <array>
     <string>/usr/local/mysql/bin/mysqld_safe</string>
     <string>--user=root</string>
     </array>
  </dict>
</plist>

而後加載該腳本

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