Mysql 多实例配置与初始化

</pre><pre>

#my.cnf
[client]
port            = 3306
socket          = /tmp/mysql.sock

[mysql]
prompt="\\u@\\h \\D \\R:\\m:\\s [\\d]> 
#pager="less -i -n -S"
#tee=/data/mysql/mysql_3306/data/query.log
no-auto-rehash

[mysqld_multi]
mysqld = /usr/local/mysql/bin/mysqld_safe
mysqladmin = /usr/local/mysql/bin/mysqladmin
log = /opt/mysql/mysqld_multi.log

[mysqld]
#misc
user = mysql
basedir = /usr/local/mysql
datadir = /data/mysql/mysql_3306/data
port = 3306
socket = /tmp/mysql.sock
event_scheduler = 0

#timeout
interactive_timeout = 300
wait_timeout = 300

#character set
character-set-server = utf8

open_files_limit = 65535
max_connections = 100
max_connect_errors = 100000

skip-name-resolve = 1
#logs
log-output=file
slow_query_log = 1
slow_query_log_file = slow.log
log-error = error.log
log_warnings = 2
pid-file = mysql.pid
long_query_time = 1
#log-slow-admin-statements = 1
#log-queries-not-using-indexes = 1
log-slow-slave-statements = 1

#binlog
binlog_format = mixed
server-id = 10518
log-bin = mybinlog
binlog_cache_size = 4M
max_binlog_size = 1G
max_binlog_cache_size = 2G
sync_binlog = 0
expire_logs_days = 10

#relay log
skip_slave_start = 1
max_relay_log_size = 1G
relay_log_purge = 1
relay_log_recovery = 1
log_slave_updates
#slave-skip-errors=1032,1053,1062

#buffers & cache
table_open_cache = 2048
table_definition_cache = 2048
table_open_cache = 2048
max_heap_table_size = 96M
sort_buffer_size = 2M
join_buffer_size = 2M
thread_cache_size = 256
query_cache_size = 0
query_cache_type = 0
query_cache_limit = 256K
query_cache_min_res_unit = 512
thread_stack = 192K
tmp_table_size = 96M
key_buffer_size = 8M
read_buffer_size = 2M
read_rnd_buffer_size = 16M
bulk_insert_buffer_size = 32M

#myisam
myisam_sort_buffer_size = 128M
myisam_max_sort_file_size = 10G
myisam_repair_threads = 1

#innodb
innodb_buffer_pool_size = 100M
innodb_buffer_pool_instances = 1
innodb_data_file_path = ibdata1:1G:autoextend
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 64M
innodb_log_file_size = 256M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 50
innodb_file_per_table = 1
innodb_rollback_on_timeout
innodb_status_file = 1
innodb_io_capacity = 2000
transaction_isolation = READ-COMMITTED
innodb_flush_method = O_DIRECT

#端口号为3306的实例特殊配置
[mysqld3306]
port =3306 
server-id=203306
#指定本实例相应版本的basedir和datadir
basedir= /usr/local/mysql
datadir =/data/mysql/dao_3306/data
socket          = /tmp/mysql.sock
#重新配置这几个选项，不与全局配置一样，会直接覆盖上面的全局设置
innodb_buffer_pool_size = 100m
#transaction_isolation = REPEATABLE-READ



[mysqld3308]
port=3308
server-id=203308
#binlog-do-db=db01
basedir= /usr/local/mysql
datadir = /data/mysql/dao_3308/data
socket          = /tmp/mysql_3308.sock
#重新配置这几个选项，不与全局配置一样，会直接覆盖上面的全局设置
innodb_buffer_pool_size = 100m
innodb_flush_log_at_trx_commit = 2
sync_binlog = 0


[mysqld3309]
port=3309
server-id=203309
#binlog-do-db=db01
basedir= /usr/local/mysql
datadir = /data/mysql/mysql_3309/data
socket          = /tmp/mysql_3309.sock
#重新配置这几个选项，不与全局配置一样，会直接覆盖上面的全局设置
innodb_buffer_pool_size = 100m
innodb_flush_log_at_trx_commit = 2
sync_binlog = 0

初始化数据库

<pre name="code" class="sql">必须要进入到Mysql 安装目录来运行命令

[mysql@server ~]$ cd /usr/local/mysql

[mysql@server mysql]$ scripts/mysql_install_db  --datadir=/data/mysql/dao_3306/data/
Installing MySQL system tables...
OK
Filling help tables...
OK

To start mysqld at boot time you have to copy
support-files/mysql.server to the right place for your system

PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !
To do so, start the server, then issue the following commands:

/usr/local/mysql/bin/mysqladmin -u root password 'new-password'
/usr/local/mysql/bin/mysqladmin -u root -h server password 'new-password'

Alternatively you can run:
/usr/local/mysql/bin/mysql_secure_installation

which will also give you the option of removing the test
databases and anonymous user created by default.  This is
strongly recommended for production servers.

See the manual for more instructions.

You can start the MySQL daemon with:
cd /usr/local/mysql ; /usr/local/mysql/bin/mysqld_safe &

You can test the MySQL daemon with mysql-test-run.pl
cd /usr/local/mysql/mysql-test ; perl mysql-test-run.pl

Please report any problems at http://bugs.mysql.com/

使用mysqld_multi来管理mysql 实例

[mysql@server mysql]$ mysqld_multi start 3308

[mysql@server mysql]$ mysqld_multi report
Reporting MySQL servers
MySQL server from group: mysqld3306 is running
MySQL server from group: mysqld3308 is running

[mysql@server mysql]$ mysqld_multi stop 3308 

[mysql@server mysql]$ mysqld_multi report
Reporting MySQL servers
MySQL server from group: mysqld3306 is running
MySQL server from group: mysqld3308 is not running
MySQL server from group: mysqld3309 is not running

同时也可以跟踪/mysqld_multi.log
[root@server ~]# tail -f /data/mysql/mysqld_multi.log 

Stopping MySQL servers

141110 23:08:13 mysqld_safe mysqld from pid file /data/mysql/dao_3308/data/mysql.pid ended
mysqld_multi log file version 2.16; run: Mon Nov 10 23:08:24 2014

Reporting MySQL servers
MySQL server from group: mysqld3306 is running
MySQL server from group: mysqld3308 is not running
MySQL server from group: mysqld3309 is not running