安裝

Mysql預設安裝在/usr/local目錄下，這個目錄可以通過command+shift+G進入：

進入後選擇mysql安裝資料夾。

配置檔案

Mac上Mysql預設沒有配置檔案，需要自己新增，可以support-file 檔案目錄下的my-default.cnf複製一份到桌面上，可以把檔案中的內容全部替換為一下內容

# Example MySQL config file for small systems.  
#  
# This is for a system with little memory (<= 64M) where MySQL is only used  
 

# from time to time and it's important that the mysqld daemon  
# doesn't use much resources.  
#  
# 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_password  
port        = 3306 
socket      = /tmp/mysql.sock  

# Here follows entries for some specific programs  

# The MySQL server   
[mysqld]  
default-storage-engine=INNODB  
character-set-server=utf8  
collation-server=utf8_general_ci  
port        = 3306 
socket      = /tmp/mysql.sock  
skip-external-locking  
key_buffer_size = 16K  
max_allowed_packet = 1M  
table_open_cache = 4 
sort_buffer_size = 64K  
read_buffer_size = 256K  
read_rnd_buffer_size = 256K  
net_buffer_length = 2K  
thread_stack = 128K  

# 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  
# (using the "enable-named-pipe" option) will render mysqld useless!  
#   
#skip-networking  
server-id   = 1 

# Uncomment the following if you want to log updates  
#log-bin=mysql-bin  

# binary logging format - mixed recommended  
#binlog_format=mixed  

# Causes updates to non-transactional engines using statement format to be  
# written directly to binary log. Before using this option make sure that  
# there are no dependencies between transactional and non-transactional  
# tables such as in the statement INSERT INTO t_myisam SELECT * FROM  
# t_innodb; otherwise, slaves may diverge from the master.  
#binlog_direct_non_transactional_updates=TRUE  

# 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]  
quick  
max_allowed_packet = 16M  

[mysql]  
no-auto-rehash  
# Remove the next comment character if you are not familiar with SQL  
#safe-updates  

[myisamchk]  
key_buffer_size = 8M  
sort_buffer_size = 8M  

[mysqlhotcopy]  
interactive-timeout 

來源：https://www.tuicool.com/articles/QBFZV3R
然後儲存，將檔名my-default.cnf 改為my.cnf,然後將其放到etc目錄下，關於如何進入etc目錄，和前面的方法一樣：

注意，這個etc目錄不是在Mysql安裝目錄下的，所以在安裝目錄下找不到！然後重啟Mysql即可。

後續配置檔案的修改

如果以後還要修改配置檔案中的內容怎麼辦？也是找到etc目錄下的my.cnf檔案，如果直接開啟編輯，會發現沒有修改許可權。當然，有一種方法是和前面一樣，把檔案複製到桌面上，修改裡面的內容，然後重新替換掉原來etc目錄下的檔案，還有一種解決方法：通過控制檯用vim開啟該檔案,在控制檯輸入如下指令：

cd /private/etc
sudo vim my.cnf

然後輸入開機密碼，即可開啟my.cnf :

開啟後按下鍵盤I，最下方會出現INSERT 單詞，進入編輯模式，代表現在可以修改該檔案，只需要修改你想修改的配置即可，注意要在英文輸入的狀態下按鍵盤I，修改完成後按下esc,退出編輯模式。然後按下shift+Q,輸入wq 儲存並退出：

常用指令：

:wq   儲存後退出vim
:wq!  強制儲存後退出
:w    儲存但不退出
:w!   若檔案屬性為只讀時，強制寫入該檔案
:q    退出vi
:q!   若曾修改過檔案，又不想儲存，使用 ! 為強制離開不儲存檔案。