兩臺MySQL服務器

Question

我想通過mysqld_multi使用2臺SQL服務器。我可以運行一個在端口3306成功的，但現在我想創造一個全新的服務器上3307這是我在/etc/mysql/my.cnf配置：

# 
# The MySQL database server configuration file. 
# 
# You can copy this to one of: 
# - "/etc/mysql/my.cnf" to set global options, 
# - "~/.my.cnf" to set user-specific options. 
# 
# One can use all long options that the program supports. 
# Run program with --help to get a list of available options and with 
# --print-defaults to see which it would actually understand and use. 
# 
# For explanations see 
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html 

# This will be passed to all mysql clients 
# It has been reported that passwords should be enclosed with ticks/quotes 
# escpecially if they contain "#" chars... 
# Remember to edit /etc/mysql/debian.cnf when changing the socket location. 

[mysqld_multi] 
mysqld  = /usr/bin/mysqld_safe 
mysqladmin = /usr/bin/mysqladmin 
user  = root 
password = <mypass> 

[client] 
port  = 3306 
socket  = /var/run/mysqld/mysqld.sock 

[client2] 
port  = 3307 
socket  = /var/run/mysqld/mysqld2.sock 

# Here is entries for some specific programs 
# The following values assume you have at least 32M ram 

# This was formally known as [safe_mysqld]. Both versions are currently parsed. 
[mysqld_safe] 
socket  = /var/run/mysqld/mysqld.sock 
nice  = 0 

[mysqld] 
# 
# * Basic Settings 
# 

# 
# * IMPORTANT 
# If you make changes to these settings and your system uses apparmor, you may 
# also need to also adjust /etc/apparmor.d/usr.sbin.mysqld. 
# 

user  = mysql 
socket  = /var/run/mysqld/mysqld.sock 
port  = 3306 
basedir  = /usr 
datadir  = /var/lib/mysql 
tmpdir  = /tmp 
skip-external-locking 
# 
# Instead of skip-networking the default is now to listen only on 
# localhost which is more compatible and is not less secure. 
#bind-address  = 127.0.0.1 
# 
# * Fine Tuning 
# 
key_buffer  = 16M 
max_allowed_packet = 16M 
thread_stack  = 192K 
thread_cache_size  = 8 
# This replaces the startup script and checks MyISAM tables if needed 
# the first time they are touched 
myisam-recover   = BACKUP 
#max_connections  = 100 
#table_cache   = 64 
#thread_concurrency  = 10 
# 
# * Query Cache Configuration 
# 
query_cache_limit = 1M 
query_cache_size  = 16M 
# 
# * Logging and Replication 
# 
# Both location gets rotated by the cronjob. 
# Be aware that this log type is a performance killer. 
# As of 5.1 you can enable the log at runtime! 
#general_log_file  = /var/log/mysql/mysql.log 
#general_log    = 1 

log_error    = /var/log/mysql/error.log 

# Here you can see queries with especially long duration 
#log_slow_queries = /var/log/mysql/mysql-slow.log 
#long_query_time = 2 
#log-queries-not-using-indexes 
# 
# The following can be used as easy to replay backup logs or for replication. 
# note: if you are setting up a replication slave, see README.Debian about 
#  other settings you may need to change. 
#server-id  = 1 
#log_bin   = /var/log/mysql/mysql-bin.log 
expire_logs_days = 10 
max_binlog_size   = 100M 
#binlog_do_db  = include_database_name 
#binlog_ignore_db = include_database_name 
# 
# * InnoDB 
# 
# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/. 
# Read the manual for more InnoDB related options. There are many! 
# 
# * Security Features 
# 
# Read the manual, too, if you want chroot! 
# chroot = /var/lib/mysql/ 
# 
# For generating SSL certificates I recommend the OpenSSL GUI "tinyca". 
# 
# ssl-ca=/etc/mysql/cacert.pem 
# ssl-cert=/etc/mysql/server-cert.pem 
# ssl-key=/etc/mysql/server-key.pem 



[mysqldump] 
quick 
quote-names 
max_allowed_packet = 16M 

[mysql] 
#no-auto-rehash # faster start of mysql but no tab completition 

[isamchk] 
key_buffer  = 16M 

# 
# * IMPORTANT: Additional settings that can override those from this file! 
# The files must end with '.cnf', otherwise they'll be ignored. 
# 
!includedir /etc/mysql/conf.d/ 

但是，當我改變端口在phpMyAdmin到3307，我仍然看到相同的數據庫作爲3306 :(我做錯了什麼？

Answer 1

您必須更改[mysqld]部分，這是服務器本身端口＃[client]部分用於...客戶端，如mysql命令行應用程序

您不能在同一個文件中配置兩臺服務器。需要兩個獨立的my.cnf，並通過命令行參數將服務器的每個實例指向這兩個文件中的一個。

此外，您還必須確保客戶端應用程序（如mysql）使用適當的my.cnf文件查找自己的端口。默認情況下，他們只會尋找一個my.cnf。

你需要運行兩個物理上不同的mysql實例的任何理由？你知道，你可以在一個服務器實例中託管多個獨立的數據庫。