mysql多实例的配置和管理

原文地址：mysql多实例的配置和管理 作者：飞鸿无痕

多实例mysql的安装和管理

mysql的多实例有两种方式可以实现，两种方式各有利弊。
第一种是使用多个配置文件启动不同的进程来实现多实例，这种方式的优势逻辑简单，配置简单，缺点是管理起来不太方便。
第二种是通过官方自带的mysqld_multi使用单独的配置文件来实现多实例，这种方式定制每个实例的配置不太方面，优点是管理起来很方便，集中管理。

下面就分别来实战这两种多实例的安装和管理

先来学习第一种使用多个配置文件启动多个不同进程的情况：

环境介绍：

mysql 版本：5.1.50

操作系统：SUSE 11

mysql实例数：3个

实例占用端口分别为：3306、3307、3308

创建mysql用户

 

点击(此处)折叠或打开

1. /usr/sbin/groupadd mysql
2. /usr/sbin/useradd -g mysql mysql

编译安装mysql

点击(此处)折叠或打开

1. tar xzvf mysql-5.1.50.tar.gz
2. cd mysql-5.1.50
3. ./configure '--prefix=/usr/local/mysql' '--with-charset=utf8' '--with-extra-charsets=complex' '--with-pthread' '--enable-thread-safe-client' '--with-ssl' '--with-client-ldflags=-all-static' '--with-mysqld-ldflags=-all-static' '--with-plugins=partition,innobase,blackhole,myisam,innodb_plugin,heap,archive' '--enable-shared' '--enable-assembler'
4. make
5. make install

初始化数据库

点击(此处)折叠或打开

1. /usr/local/mysql/bin/mysql_install_db --basedir=/usr/local/mysql --datadir=/data/dbdata_3306 --user=mysql
2. /usr/local/mysql/bin/mysql_install_db --basedir=/usr/local/mysql --datadir=/data/dbdata_3307 --user=mysql
3. /usr/local/mysql/bin/mysql_install_db --basedir=/usr/local/mysql --datadir=/data/dbdata_3308 --user=mysql

创建配置文件

vim /data/dbdata_3306/my.cnf

3306的配置文件如下：

点击(此处)折叠或打开

1. [client]
2. port = 3306
3. socket = /data/dbdata_3306/mysql.sock
4. [mysqld]
5. datadir=/data/dbdata_3306/
6. skip-name-resolve
7. lower_case_table_names=1
8. innodb_file_per_table=1
9. port = 3306
10. socket = /data/dbdata_3306/mysql.sock
11. back_log = 50
12. max_connections = 300
13. max_connect_errors = 1000
14. table_open_cache = 2048
15. max_allowed_packet = 16M
16. binlog_cache_size = 2M
17. max_heap_table_size = 64M
18. sort_buffer_size = 2M
19. join_buffer_size = 2M
20. thread_cache_size = 64
21. thread_concurrency = 8
22. query_cache_size = 64M
23. query_cache_limit = 2M
24. ft_min_word_len = 4
25. default-storage-engine = innodb
26. thread_stack = 192K
27. transaction_isolation = REPEATABLE-READ
28. tmp_table_size = 64M
29. log-bin=mysql-bin
30. binlog_format=mixed
31. slow_query_log
32. long_query_time = 1
33. server-id = 1
34. key_buffer_size = 8M
35. read_buffer_size = 2M
36. read_rnd_buffer_size = 2M
37. bulk_insert_buffer_size = 64M
38. myisam_sort_buffer_size = 128M
39. myisam_max_sort_file_size = 10G
40. myisam_repair_threads = 1
41. myisam_recover
42. innodb_additional_mem_pool_size = 16M
43. innodb_buffer_pool_size = 200M
44. innodb_data_file_path = ibdata1:10M:autoextend
45. innodb_file_io_threads = 8
46. innodb_thread_concurrency = 16
47. innodb_flush_log_at_trx_commit = 1
48. innodb_log_buffer_size = 16M
49. innodb_log_file_size = 512M
50. innodb_log_files_in_group = 3
51. innodb_max_dirty_pages_pct = 60
52. innodb_lock_wait_timeout = 120
53. [mysqldump]
54. quick
55. max_allowed_packet = 256M
56. [mysql]
57. no-auto-rehash
58. prompt=\\u@\\d \\R:\\m>
59. [myisamchk]
60. key_buffer_size = 512M
61. sort_buffer_size = 512M
62. read_buffer = 8M
63. write_buffer = 8M
64. [mysqlhotcopy]
65. interactive-timeout
66. [mysqld_safe]
67. open-files-limit = 8192

vim /data/dbdata_3307/my.cnf

3307的配置文件如下：

点击(此处)折叠或打开

1. [client]
2. port = 3307
3. socket = /data/dbdata_3307/mysql.sock
4. [mysqld]
5. datadir=/data/dbdata_3307/
6. skip-name-resolve
7. lower_case_table_names=1
8. innodb_file_per_table=1
9. port = 3307
10. socket = /data/dbdata_3307/mysql.sock
11. back_log = 50
12. max_connections = 300
13. max_connect_errors = 1000
14. table_open_cache = 2048
15. max_allowed_packet = 16M
16. binlog_cache_size = 2M
17. max_heap_table_size = 64M
18. sort_buffer_size = 2M
19. join_buffer_size = 2M
20. thread_cache_size = 64
21. thread_concurrency = 8
22. query_cache_size = 64M
23. query_cache_limit = 2M
24. ft_min_word_len = 4
25. default-storage-engine = innodb
26. thread_stack = 192K
27. transaction_isolation = REPEATABLE-READ
28. tmp_table_size = 64M
29. log-bin=mysql-bin
30. binlog_format=mixed
31. slow_query_log
32. long_query_time = 1
33. server-id = 1
34. key_buffer_size = 8M
35. read_buffer_size = 2M
36. read_rnd_buffer_size = 2M
37. bulk_insert_buffer_size = 64M
38. myisam_sort_buffer_size = 128M
39. myisam_max_sort_file_size = 10G
40. myisam_repair_threads = 1
41. myisam_recover
42. innodb_additional_mem_pool_size = 16M
43. innodb_buffer_pool_size = 200M
44. innodb_data_file_path = ibdata1:10M:autoextend
45. innodb_file_io_threads = 8
46. innodb_thread_concurrency = 16
47. innodb_flush_log_at_trx_commit = 1
48. innodb_log_buffer_size = 16M
49. innodb_log_file_size = 512M
50. innodb_log_files_in_group = 3
51. innodb_max_dirty_pages_pct = 60
52. innodb_lock_wait_timeout = 120
53. [mysqldump]
54. quick
55. max_allowed_packet = 256M
56. [mysql]
57. no-auto-rehash
58. prompt=\\u@\\d \\R:\\m>
59. [myisamchk]
60. key_buffer_size = 512M
61. sort_buffer_size = 512M
62. read_buffer = 8M
63. write_buffer = 8M
64. [mysqlhotcopy]
65. interactive-timeout
66. [mysqld_safe]
67. open-files-limit = 8192

vim /data/dbdata_3308/my.cnf

3308的配置文件如下：

 

点击(此处)折叠或打开

1. [client]
2. port = 3308
3. socket = /data/dbdata_3308/mysql.sock
4. [mysqld]
5. datadir=/data/dbdata_3308/
6. skip-name-resolve
7. lower_case_table_names=1
8. innodb_file_per_table=1
9. port = 3308
10. socket = /data/dbdata_3308/mysql.sock
11. back_log = 50
12. max_connections = 300
13. max_connect_errors = 1000
14. table_open_cache = 2048
15. max_allowed_packet = 16M
16. binlog_cache_size = 2M
17. max_heap_table_size = 64M
18. sort_buffer_size = 2M
19. join_buffer_size = 2M
20. thread_cache_size = 64
21. thread_concurrency = 8
22. query_cache_size = 64M
23. query_cache_limit = 2M
24. ft_min_word_len = 4
25. default-storage-engine = innodb
26. thread_stack = 192K
27. transaction_isolation = REPEATABLE-READ
28. tmp_table_size = 64M
29. log-bin=mysql-bin
30. binlog_format=mixed
31. slow_query_log
32. long_query_time = 1
33. server-id = 1
34. key_buffer_size = 8M
35. read_buffer_size = 2M
36. read_rnd_buffer_size = 2M
37. bulk_insert_buffer_size = 64M
38. myisam_sort_buffer_size = 128M
39. myisam_max_sort_file_size = 10G
40. myisam_repair_threads = 1
41. myisam_recover
42. innodb_additional_mem_pool_size = 16M
43. innodb_buffer_pool_size = 200M
44. innodb_data_file_path = ibdata1:10M:autoextend
45. innodb_file_io_threads = 8
46. innodb_thread_concurrency = 16
47. innodb_flush_log_at_trx_commit = 1
48. innodb_log_buffer_size = 16M
49. innodb_log_file_size = 512M
50. innodb_log_files_in_group = 3
51. innodb_max_dirty_pages_pct = 60
52. innodb_lock_wait_timeout = 120
53. [mysqldump]
54. quick
55. max_allowed_packet = 256M
56. [mysql]
57. no-auto-rehash
58. prompt=\\u@\\d \\R:\\m>
59. [myisamchk]
60. key_buffer_size = 512M
61. sort_buffer_size = 512M
62. read_buffer = 8M
63. write_buffer = 8M
64. [mysqlhotcopy]
65. interactive-timeout
66. [mysqld_safe]
67. open-files-limit = 8192

创建自动启动文件

vim /data/dbdata_3306/mysqld

3306的启动文件如下：

点击(此处)折叠或打开

1. #!/bin/bash
2. mysql_port=3306
3. mysql_username="admin"
4. mysql_password="password"
5. function_start_mysql()
6. {
7. printf "Starting MySQL...\n"
8. /bin/sh /usr/local/mysql/bin/mysqld_safe --defaults-file=/data/dbdata_${mysql_port}/my.cnf 2>&1 > /dev/null &
9. }
10. function_stop_mysql()
11. {
12. printf "Stoping MySQL...\n"
13. /usr/local/mysql/bin/mysqladmin -u ${mysql_username} -p${mysql_password} -S /data/dbdata_${mysql_port}/mysql.sock shutdown
14. }
15. function_restart_mysql()
16. {
17. printf "Restarting MySQL...\n"
18. function_stop_mysql
19. function_start_mysql
20. }
21. function_kill_mysql()
22. {
23. kill -9 $(ps -ef | grep 'bin/mysqld_safe' | grep ${mysql_port} | awk '{printf $2}')
24. kill -9 $(ps -ef | grep 'libexec/mysqld' | grep ${mysql_port} | awk '{printf $2}')
25. }
26. case $1 in
27. start)
28. function_start_mysql;;
29. stop)
30. function_stop_mysql;;
31. kill)
32. function_kill_mysql;;
33. restart)
34. function_stop_mysql
35. function_start_mysql;;
36. *)
37. echo "Usage: /data/dbdata_${mysql_port}/mysqld {start|stop|restart|kill}";;
38. esac

vim /data/dbdata_3307/mysqld

3307的启动文件如下：

点击(此处)折叠或打开

1. #!/bin/bash
2. mysql_port=3307
3. mysql_username="admin"
4. mysql_password="password"
5. function_start_mysql()
6. {
7. printf "Starting MySQL...\n"
8. /bin/sh /usr/local/mysql/bin/mysqld_safe --defaults-file=/data/dbdata_${mysql_port}/my.cnf 2>&1 > /dev/null &
9. }
10. function_stop_mysql()
11. {
12. printf "Stoping MySQL...\n"
13. /usr/local/mysql/bin/mysqladmin -u ${mysql_username} -p${mysql_password} -S /data/dbdata_${mysql_port}/mysql.sock shutdown
14. }
15. function_restart_mysql()
16. {
17. printf "Restarting MySQL...\n"
18. function_stop_mysql
19. function_start_mysql
20. }
21. function_kill_mysql()
22. {
23. kill -9 $(ps -ef | grep 'bin/mysqld_safe' | grep ${mysql_port} | awk '{printf $2}')
24. kill -9 $(ps -ef | grep 'libexec/mysqld' | grep ${mysql_port} | awk '{printf $2}')
25. }
26. case $1 in
27. start)
28. function_start_mysql;;
29. stop)
30. function_stop_mysql;;
31. kill)
32. function_kill_mysql;;
33. restart)
34. function_stop_mysql
35. function_start_mysql;;
36. *)
37. echo "Usage: /data/dbdata_${mysql_port}/mysqld {start|stop|restart|kill}";;
38. esac

vim /data/dbdata_3308/mysqld

3308的启动文件如下：

点击(此处)折叠或打开

1. #!/bin/bash
2. mysql_port=3308
3. mysql_username="admin"
4. mysql_password="password"
5. function_start_mysql()
6. {
7. printf "Starting MySQL...\n"
8. /bin/sh /usr/local/mysql/bin/mysqld_safe --defaults-file=/data/dbdata_${mysql_port}/my.cnf 2>&1 > /dev/null &
9. }
10. function_stop_mysql()
11. {
12. printf "Stoping MySQL...\n"
13. /usr/local/mysql/bin/mysqladmin -u ${mysql_username} -p${mysql_password} -S /data/dbdata_${mysql_port}/mysql.sock shutdown
14. }
15. function_restart_mysql()
16. {
17. printf "Restarting MySQL...\n"
18. function_stop_mysql
19. function_start_mysql
20. }
21. function_kill_mysql()
22. {
23. kill -9 $(ps -ef | grep 'bin/mysqld_safe' | grep ${mysql_port} | awk '{printf $2}')
24. kill -9 $(ps -ef | grep 'libexec/mysqld' | grep ${mysql_port} | awk '{printf $2}')
25. }
26. case $1 in
27. start)
28. function_start_mysql;;
29. stop)
30. function_stop_mysql;;
31. kill)
32. function_kill_mysql;;
33. restart)
34. function_stop_mysql
35. function_start_mysql;;
36. *)
37. echo "Usage: /data/dbdata_${mysql_port}/mysqld {start|stop|restart|kill}";;
38. esac

启动3306、3307、3308的mysql

点击(此处)折叠或打开

1. /data/dbdata_3306/mysqld start
2. /data/dbdata_3307/mysqld start
3. /data/dbdata_3308/mysqld start

更改原来密码（处于安全考虑，还需要删除系统中没有密码的帐号，这里省略了）：

 

点击(此处)折叠或打开

1. /usr/local/mysql/bin/mysqladmin -uroot password 'password' -S /data/dbdata_3306/mysql.sock
2. /usr/local/mysql/bin/mysqladmin -uroot password 'password' -S /data/dbdata_3307/mysql.sock
3. /usr/local/mysql/bin/mysqladmin -uroot password 'password' -S /data/dbdata_3308/mysql.sock

登录测试并创建关闭mysql的帐号权限，mysqld脚本要用到！

 

点击(此处)折叠或打开

1. /usr/local/mysql/bin/mysql -uroot -ppassword -S /data/dbdata_3308/mysql.sock
2. GRANT SHUTDOWN ON *.* TO 'admin'@'localhost' IDENTIFIED BY 'password';
3. flush privileges;
4. /usr/local/mysql/bin/mysql -uroot -ppassword -S /data/dbdata_3308/mysql.sock
5. GRANT SHUTDOWN ON *.* TO 'admin'@'localhost' IDENTIFIED BY 'password';
6. flush privileges;
7. /usr/local/mysql/bin/mysql -uroot -ppassword -S /data/dbdata_3308/mysql.sock
8. GRANT SHUTDOWN ON *.* TO 'admin'@'localhost' IDENTIFIED BY 'password';
9. flush privileges;

创建了admin帐号以后脚本的stop功能和restart功能就正常了！

更改环境变量

 

点击(此处)折叠或打开

1. vim /etc/profile 添加下面一行内容
2. PATH=${PATH}:/usr/local/mysql/bin/
3. source /etc/profile

添加到自动启动

 

点击(此处)折叠或打开

1. vim /etc/init.d/boot.local
2. /data/dbdata_3306/mysqld start
3. /data/dbdata_3307/mysqld start
4. /data/dbdata_3308/mysqld start

如果是rhel或者centos系统的话自启动文件/etc/rc.local

 

管理的话，在本地都是采用 -S /data/dbdata_3308/mysql.sock，如果在远程可以通过不同的端口连接上去坐管理操作。其他的和单实例的管理没什么区别！

 

 

 

再来看第二种通过官方自带的mysqld_multi来实现多实例实战：

这里的mysql安装以及数据库的初始化和前面的步骤一样，就不再赘述。

mysqld_multi的配置

vim /etc/my.cnf

点击(此处)折叠或打开

1. [mysqld_multi]
2. mysqld = /usr/local/mysql/bin/mysqld_safe
3. mysqladmin = /usr/local/mysql/bin/mysqladmin
4. user = admin
5. password = password
6. [mysqld1]
7. socket = /data/dbdata_3306/mysql.sock
8. port = 3306
9. pid-file = /data/dbdata_3306/3306.pid
10. datadir = /data/dbdata_3306
11. user = mysql
12. skip-name-resolve
13. lower_case_table_names=1
14. innodb_file_per_table=1
15. back_log = 50
16. max_connections = 300
17. max_connect_errors = 1000
18. table_open_cache = 2048
19. max_allowed_packet = 16M
20. binlog_cache_size = 2M
21. max_heap_table_size = 64M
22. sort_buffer_size = 2M
23. join_buffer_size = 2M
24. thread_cache_size = 64
25. thread_concurrency = 8
26. query_cache_size = 64M
27. query_cache_limit = 2M
28. ft_min_word_len = 4
29. default-storage-engine = innodb
30. thread_stack = 192K
31. transaction_isolation = REPEATABLE-READ
32. tmp_table_size = 64M
33. log-bin=mysql-bin
34. binlog_format=mixed
35. slow_query_log
36. long_query_time = 1
37. server-id = 1
38. key_buffer_size = 8M
39. read_buffer_size = 2M
40. read_rnd_buffer_size = 2M
41. bulk_insert_buffer_size = 64M
42. myisam_sort_buffer_size = 128M
43. myisam_max_sort_file_size = 10G
44. myisam_repair_threads = 1
45. myisam_recover
46. innodb_additional_mem_pool_size = 16M
47. innodb_buffer_pool_size = 200M
48. innodb_data_file_path = ibdata1:10M:autoextend
49. innodb_file_io_threads = 8
50. innodb_thread_concurrency = 16
51. innodb_flush_log_at_trx_commit = 1
52. innodb_log_buffer_size = 16M
53. innodb_log_file_size = 512M
54. innodb_log_files_in_group = 3
55. innodb_max_dirty_pages_pct = 60
56. innodb_lock_wait_timeout = 120
57. [mysqld2]
58. socket = /data/dbdata_3307/mysql.sock
59. port = 3307
60. pid-file = /data/dbdata_3307/3307.pid
61. datadir = /data/dbdata_3307
62. user = mysql
63. skip-name-resolve
64. lower_case_table_names=1
65. innodb_file_per_table=1
66. back_log = 50
67. max_connections = 300
68. max_connect_errors = 1000
69. table_open_cache = 2048
70. max_allowed_packet = 16M
71. binlog_cache_size = 2M
72. max_heap_table_size = 64M
73. sort_buffer_size = 2M
74. join_buffer_size = 2M
75. thread_cache_size = 64
76. thread_concurrency = 8
77. query_cache_size = 64M
78. query_cache_limit = 2M
79. ft_min_word_len = 4
80. default-storage-engine = innodb
81. thread_stack = 192K
82. transaction_isolation = REPEATABLE-READ
83. tmp_table_size = 64M
84. log-bin=mysql-bin
85. binlog_format=mixed
86. slow_query_log
87. long_query_time = 1
88. server-id = 1
89. key_buffer_size = 8M
90. read_buffer_size = 2M
91. read_rnd_buffer_size = 2M
92. bulk_insert_buffer_size = 64M
93. myisam_sort_buffer_size = 128M
94. myisam_max_sort_file_size = 10G
95. myisam_repair_threads = 1
96. myisam_recover
97. innodb_additional_mem_pool_size = 16M
98. innodb_buffer_pool_size = 200M
99. innodb_data_file_path = ibdata1:10M:autoextend
100. innodb_file_io_threads = 8
101. innodb_thread_concurrency = 16
102. innodb_flush_log_at_trx_commit = 1
103. innodb_log_buffer_size = 16M
104. innodb_log_file_size = 512M
105. innodb_log_files_in_group = 3
106. innodb_max_dirty_pages_pct = 60
107. innodb_lock_wait_timeout = 120
108. [mysqld3]
109. socket = /data/dbdata_3308/mysql.sock
110. port = 3308
111. pid-file = /data/dbdata_3308/3308.pid
112. datadir = /data/dbdata_3308
113. user = mysql
114. skip-name-resolve
115. lower_case_table_names=1
116. innodb_file_per_table=1
117. back_log = 50
118. max_connections = 300
119. max_connect_errors = 1000
120. table_open_cache = 2048
121. max_allowed_packet = 16M
122. binlog_cache_size = 2M
123. max_heap_table_size = 64M
124. sort_buffer_size = 2M
125. join_buffer_size = 2M
126. thread_cache_size = 64
127. thread_concurrency = 8
128. query_cache_size = 64M
129. query_cache_limit = 2M
130. ft_min_word_len = 4
131. default-storage-engine = innodb
132. thread_stack = 192K
133. transaction_isolation = REPEATABLE-READ
134. tmp_table_size = 64M
135. log-bin=mysql-bin
136. binlog_format=mixed
137. slow_query_log
138. long_query_time = 1
139. server-id = 1
140. key_buffer_size = 8M
141. read_buffer_size = 2M
142. read_rnd_buffer_size = 2M
143. bulk_insert_buffer_size = 64M
144. myisam_sort_buffer_size = 128M
145. myisam_max_sort_file_size = 10G
146. myisam_repair_threads = 1
147. myisam_recover
148. innodb_additional_mem_pool_size = 16M
149. innodb_buffer_pool_size = 200M
150. innodb_data_file_path = ibdata1:10M:autoextend
151. innodb_file_io_threads = 8
152. innodb_thread_concurrency = 16
153. innodb_flush_log_at_trx_commit = 1
154. innodb_log_buffer_size = 16M
155. innodb_log_file_size = 512M
156. innodb_log_files_in_group = 3
157. innodb_max_dirty_pages_pct = 60
158. innodb_lock_wait_timeout = 120
159. [mysqldump]
160. quick
161. max_allowed_packet = 256M
162. [mysql]
163. no-auto-rehash
164. prompt=\\u@\\d \\R:\\m>
165. [myisamchk]
166. key_buffer_size = 512M
167. sort_buffer_size = 512M
168. read_buffer = 8M
169. write_buffer = 8M
170. [mysqlhotcopy]
171. interactive-timeout
172. [mysqld_safe]
173. open-files-limit = 8192

mysqld_multi启动

 

点击(此处)折叠或打开

1. /usr/local/mysql/bin/mysqld_multi start 1
2. /usr/local/mysql/bin/mysqld_multi start 2
3. /usr/local/mysql/bin/mysqld_multi start 3

或者采用一条命令的形式：

 

点击(此处)折叠或打开

1. /usr/local/mysql/bin/mysqld_multi start 1-3

更改原来密码（处于安全考虑，还需要删除系统中没有密码的帐号，这里省略了）：

点击(此处)折叠或打开

1. /usr/local/mysql/bin/mysqladmin -uroot password 'password' -S /data/dbdata_3306/mysql.sock
2. /usr/local/mysql/bin/mysqladmin -uroot password 'password' -S /data/dbdata_3307/mysql.sock
3. /usr/local/mysql/bin/mysqladmin -uroot password 'password' -S /data/dbdata_3308/mysql.sock

 

登录测试并创建admin密码(停止mysql的时候需要使用到)

点击(此处)折叠或打开

1. /usr/local/mysql/bin/mysql -uroot -ppassword -S /data/dbdata_3308/mysql.sock
2. GRANT SHUTDOWN ON *.* TO 'admin'@'localhost' IDENTIFIED BY 'password';
3. flush privileges;
4. /usr/local/mysql/bin/mysql -uroot -ppassword -S /data/dbdata_3308/mysql.sock
5. GRANT SHUTDOWN ON *.* TO 'admin'@'localhost' IDENTIFIED BY 'password';
6. flush privileges;
7. /usr/local/mysql/bin/mysql -uroot -ppassword -S /data/dbdata_3308/mysql.sock
8. GRANT SHUTDOWN ON *.* TO 'admin'@'localhost' IDENTIFIED BY 'password';
9. flush privileges;

更改环境变量

点击(此处)折叠或打开

1. vim /etc/profile
2. PATH=${PATH}:/usr/local/mysql/bin/
3. source /etc/profile

添加到自动启动

点击(此处)折叠或打开

1. vim /etc/init.d/boot.local
2. /usr/local/mysql/bin/mysqld_multi start 1-3

如果是rhel或者centos系统的话自启动文件/etc/rc.local

 

管理的话，在本地都是采用 -S /data/dbdata_3308/mysql.sock，如果在远程可以通过不同的端口连接上去坐管理操作。其他的和单实例的管理没什么区别！

大家在管理多实例的话可以使用mysqlmanager实例管理器，管理器来会比较方面，限于篇幅，这里就不在多做介绍！