MariaDB10多实例--mysqld_multi

MariaDB10多实例--mysqld_multi

单实例安装步骤请参看源码安装MariaDB10

1.再初始化一个单独的data目录
[root@node2 ~]# /usr/local/mysql/scripts/mysql_install_db  --user=mysql --basedir=/usr/local/mysql --datadir=/var/lib/mysql2
WARNING: The host 'node1' could not be looked up with resolveip.
This probably means that your libc libraries are not 100 % compatible
with this binary MariaDB version. The MariaDB daemon, mysqld, should work
normally with the exception that host name resolving will not work.
This means that you should use IP addresses instead of hostnames
when specifying MariaDB privileges !
Installing MariaDB/MySQL system tables in '/var/lib/mysql2' ...
141124 16:04:06 [Note] InnoDB: Using mutexes to ref count buffer pool pages
... ...

The latest information about MariaDB is available at http://mariadb.org/.
You can find additional information about the MySQL part at:
http://dev.mysql.com
Support MariaDB development by buying support/new features from
SkySQL Ab. You can contact us about this at sales@skysql.com.
Alternatively consider joining our community based development effort:
http://mariadb.com/kb/en/contributing-to-the-mariadb-project/

2.修改配置文件
[root@node1 ~]# cp /etc/my.cnf /etc/my.cnf.bak
[root@node1 ~]# cat /etc/my.cnf
# Example MariaDB config file for very large systems.
#
# This is for a large system with memory of 1G-2G where the system runs mainly
# MariaDB.
#
# MariaDB 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, do:
# 'my_print_defaults --help' and see what is printed under
# Default options are read from the following files in the given order:
# More information at: 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]
#password    = your_password
port        = 3306
socket        = /var/lib/mysql/mysql.sock

# Here follows entries for some specific programs

# The MySQL server
[mysqld_multi]
mysqld = /usr/local/mysql/bin/mysqld_safe
mysqladmin = /usr/local/mysql/bin/mysqladmin
user = root

[mysqld1]
port        = 3306
socket        = /var/lib/mysql/mysql.sock
skip-external-locking
key_buffer_size = 384M
max_allowed_packet = 1M
table_open_cache = 512
sort_buffer_size = 2M
read_buffer_size = 2M
read_rnd_buffer_size = 8M
myisam_sort_buffer_size = 64M
thread_cache_size = 8
query_cache_size = 32M
# Try number of CPU's*2 for thread_concurrency
thread_concurrency = 8

# Point the following paths to a dedicated disk
#tmpdir        = /tmp/

# 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
# (via the "enable-named-pipe" option) will render mysqld useless!
#
#skip-networking

# Replication Master Server (default)
# binary logging is required for replication
log-bin=mysql-bin

# required unique id between 1 and 2^32 - 1
# defaults to 1 if master-host is not set
# but will not function as a master if omitted
server-id    = 1

# Replication Slave (comment out master section to use this)
#
# To configure this host as a replication slave, you can choose between
# two methods :
#
# 1) Use the CHANGE MASTER TO command (fully described in our manual) -
#    the syntax is:
#
#    CHANGE MASTER TO MASTER_HOST=, MASTER_PORT=,
#    MASTER_USER=, MASTER_PASSWORD= ;
#
#    where you replace , , by quoted strings and
#    by the master's port number (3306 by default).
#
#    Example:
#
#    CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
#    MASTER_USER='joe', MASTER_PASSWORD='secret';
#
# OR
#
# 2) Set the variables below. However, in case you choose this method, then
#    start replication for the first time (even unsuccessfully, for example
#    if you mistyped the password in master-password and the slave fails to
#    connect), the slave will create a master.info file, and any later
#    change in this file to the variables' values below will be ignored and
#    overridden by the content of the master.info file, unless you shutdown
#    the slave server, delete master.info and restart the slaver server.
#    For that reason, you may want to leave the lines below untouched
#    (commented) and instead use CHANGE MASTER TO (see above)
#
# required unique id between 2 and 2^32 - 1
# (and different from the master)
# defaults to 2 if master-host is set
# but will not function as a slave if omitted
#server-id       = 2
#
# The replication master for this slave - required
#master-host     =  
#
# The username the slave will use for authentication when connecting
# to the master - required
#master-user     =  
#
# The password the slave will authenticate with when connecting to
# the master - required
#master-password =  
#
# The port the master is listening on.
# optional - defaults to 3306
#master-port     = 
#
# binary logging - not required for slaves, but recommended
#log-bin=mysql-bin
#
# binary logging format - mixed recommended
#binlog_format=mixed

# Uncomment the following if you are using InnoDB tables
#innodb_data_home_dir = /var/lib/mysql
#innodb_data_file_path = ibdata1:2000M;ibdata2:10M:autoextend
#innodb_log_group_home_dir = /var/lib/mysql
# You can set .._buffer_pool_size up to 50 - 80 %
# of RAM but beware of setting memory usage too high
#innodb_buffer_pool_size = 384M
#innodb_additional_mem_pool_size = 20M
# Set .._log_file_size to 25 % of buffer pool size
#innodb_log_file_size = 100M
#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 = 256M
sort_buffer_size = 256M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout
##Log
log_error = /var/log/mysql/mysqld-error.log
long_query_time = 1
slow_query_log
slow_query_log_file = /var/log/mysql/mysqld-slow.log

##Other
#max_connections = 1000
#open_files_limit = 65535
[mysqld2]
port = 3307
datadir = /var/lib/mysql2
socket = /var/lib/mysql2/mysqld2.sock
上面红色部分为修改和新增的内容，以支持多实例。
如要再开一个实例则需再初始化一个data目录并加上一段mysqld3即可。

3.配置服务管理脚本
[root@node1 ~]# cp /usr/local/src/mariadb-10.0.14/rhel6/support-files/mysqld_multi.server /etc/init.d/mysql-multi
[root@node1 ~]# chmod +x /etc/init.d/mysql-multi
[root@node1 ~]# ll /etc/init.d/mysql-multi
-rwxr-xr-x. 1 root root 1061 Nov 24 15:57 /etc/init.d/mysql-multi

4.启服务
root@node1 ~]# /etc/init.d/mysql-multi report
Reporting MySQL servers
MySQL server from group: mysqld1 is running
MySQL server from group: mysqld2 is not running
[root@node1 ~]# /etc/init.d/mysql stop
Shutting down MySQL... SUCCESS!
[root@node1 ~]# /etc/init.d/mysql-multi report
Reporting MySQL servers
MySQL server from group: mysqld1 is not running
MySQL server from group: mysqld2 is not running
[root@node1 ~]# /etc/init.d/mysql-multi start
[root@node1 ~]# /etc/init.d/mysql-multi report
Reporting MySQL servers
MySQL server from group: mysqld1 is running
MySQL server from group: mysqld2 is running
[root@node1 ~]# netstat -tnlp|grep mysql
tcp        0      0 0.0.0.0:3307                0.0.0.0:*                   LISTEN      14618/mysqld        
tcp        0      0 0.0.0.0:3306                0.0.0.0:*                   LISTEN      14683/mysqld