Quick Test Setup of MySQL Cluster
To familiarize you with the basics, we will describe the simplest
possible configuration for a functional MySQL Cluster. After this,
you should be able to design your desired setup from the
information provided in the other relevant sections of this
chapter.
First, you need to create a configuration directory such as
/var/lib/mysql-cluster
, by executing the
following command as the system root
user:
shell> mkdir /var/lib/mysql-cluster
In this directory, create a file named
config.ini
that contains the following
information. Substitute appropriate values for
HostName
and DataDir
as
necessary for your system.
# file "config.ini" - showing minimal setup consisting of 1 data node,
# 1 management server, and 3 MySQL servers.
# The empty default sections are not required, and are shown only for
# the sake of completeness.
# Data nodes must provide a hostname but MySQL Servers are not required
# to do so.
# If you don't know the hostname for your machine, use localhost.
# The DataDir parameter also has a default value, but it is recommended to
# set it explicitly.
# Note: [db], [api], and [mgm] are aliases for [ndbd], [mysqld], and [ndb_mgmd],
# respectively. [db] is deprecated and should not be used in new installations.
[ndbd default]
NoOfReplicas= 1
[mysqld default]
[ndb_mgmd default]
[tcp default]
[ndb_mgmd]
HostName= myhost.example.com
[ndbd]
HostName= myhost.example.com
DataDir= /var/lib/mysql-cluster
[mysqld]
[mysqld]
[mysqld]
You can now start the ndb_mgmd
management
server. By default, it attempts to read the
config.ini
file in its current working
directory, so change location into the directory where the file is
located and then invoke ndb_mgmd
:
shell> cd /var/lib/mysql-cluster
shell> ndb_mgmd
Then start a single data node by running ndbd
:
相关文档:
http://www.cnblogs.com/neonlight/archive/2008/08/25/1276178.html
近一段时间,很多部门同事反映在使用mysql的过程出现数据库连接自动断开的问题,我对该问题做了一些实验。
关于mysql自动断开的问题研究结果如下,在mysql中有相关参数设定,当数据库连接空闲一定时间后,服务器就
会断开等待超时的连接:
1、相关参 ......
MySQL Cluster
is a technology that enables
clustering of in-memory databases in a shared-nothing system. The
shared-nothing architecture allows the system to work with very
inexpensive hardware, and with a minimum of specific requirements
for hardware or software.
......
NDBCLUSTER
(also known as NDB
) is an in-memory
storage engine offering high-availability and data-persistence
features.
The NDBCLUSTER
storage engine can be
configured with a range of failover and load-balancing options,
but it is easiest t ......
CREATE DEFINER=`root`@`%` FUNCTION `sp_cn`(n_LowerMoney decimal(15,2)) RETURNS varchar(200) CHARSET utf8
begin
Declare v_LowerStr VARCHAR(200) ;
Declare v_UpperPart VARCHAR(200) ;
Declare v_UpperStr VARCHAR(200) ;
Declare i_I int ;
set v_LowerStr = LTRIM(RTRIM(ROUND(n_LowerMoney,2 ......
PHP新的连接MySQL方法mysqli
1. 开启PHP的API支持
(1)首先修改您的php.ini的配置文件。
查找下面的语句:
;extension=php_mysqli.dll
将其修改为:
extension=php_mysqli.dll
......