MYSQL使用心得(六)----cluster

官方网站
http://dev.mysql.com/downloads/cluster/
mysql-cluster其实就是mysql7.0版本的别名。但是根据个人经验，在实际生产中，很少有人用。所以这里写个文章，作为入门的了解和学习。




cluster的安装，首先要安装java和cmake
datadir=/data0/search/mysql-cluster

【安装管理节点】
cmake -DCMAKE_INSTALL_PREFIX=/application/search/mysql-cluster/mysql-cluster-gpl-7.2.8
make -j16
make install -j16

复制配置文件,并修改相应配置
mkdir etc
cp support-files/config.huge.ini etc/

启动
./ndb_mgmd --config-file=/application/search/mysql-cluster/mysql-cluster-gpl-7.2.8/etc/config.ini

修改配置重启--reload
./ndb_mgmd --config-file=/application/search/mysql-cluster/mysql-cluster-gpl-7.2.8/etc/config.ini --reload

登录管理客户端
./ndb_mgm

停止
./ndb_mgm -e shutdown

重启其他节点 <id> restart -f;



查看表分区情况
在config.ini必须预留一个空的引擎节点
[API]
Id: 6
> show  #看最后一行，否则无法查看表分区情况
Cluster Configuration
---------------------
[ndbd(NDB)]     3 node(s)
id=2    @10.10.128.118  (mysql-5.5.27 ndb-7.2.8, Nodegroup: 0, Master)
id=3    @10.10.128.117  (mysql-5.5.27 ndb-7.2.8, Nodegroup: 1)
id=5    @10.10.128.119  (mysql-5.5.27 ndb-7.2.8, Nodegroup: 2)

[ndb_mgmd(MGM)] 1 node(s)
id=1    @10.10.128.119  (mysql-5.5.27 ndb-7.2.8)

[mysqld(API)]   2 node(s)
id=4    @10.10.128.116  (mysql-5.5.27 ndb-7.2.8)
id=6 (not connected, accepting connect from any host)
查看命令
./ndb_desc  user -d opendata_test -p 

【安装数据节点】
./scripts/mysql_install_db --user=search --datadir=/data0/search/mysql-cluster
创建配置文件/application/search/mysql-cluster/mysql-cluster-gpl-7.2.8/etc/ndb.ini

[mysqld]
datadir=/data0/search/mysql-cluster
skip-locking
ndbcluster
ndb-connectstring=10.10.128.119:1186
[mysql_cluster]
ndb-connectstring=10.10.128.119:1186


启动数据节点 ,第一次启动必须带上--initial
./ndbd --defaults-file=/application/search/mysql-cluster/mysql-cluster-gpl-7.2.8/etc/ndb.ini --initial




【安装mysql引擎】
创建配置文件/application/search/mysql-cluster/mysql-cluster-gpl-7.2.8/etc/ndb.ini
并加入
[mysqld]
# ndb
ndbcluster
ndb-connectstring=10.10.128.119:1186

初始化
./scripts/mysql_install_db --user=search --datadir=/data0/search/mysql-cluster

启动
./mysqld -uroot &

SELECT TABLE_SCHEMA, TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE ENGINE = 'NDBCLUSTER';
ALTER ONLINE TABLE table_name REORGANIZE PARTITION



【创建磁盘表】
创建日志文件
CREATE LOGFILE GROUP lg_cloudstor ADD UNDOFILE 'cloudstor_undo_1.log' INITIAL_SIZE 1024M UNDO_BUFFER_SIZE 20M ENGINE NDBCLUSTER;
该语句可能会出错，出现ERROR 1064 (42000)语法错误的信息，原因是字符集的问题，先执行：set character_set_client=latin1; 在执行：
ALTER LOGFILE GROUP lg_cloudstor ADD UNDOFILE 'cloudstor_undo_2.log' INITIAL_SIZE 1024M ENGINE NDBCLUSTER;
ALTER LOGFILE GROUP lg_cloudstor ADD UNDOFILE 'cloudstor_undo_3.log' INITIAL_SIZE 1024M ENGINE NDBCLUSTER;

创建表空间
CREATE TABLESPACE ts_cloudstore ADD DATAFILE 'cloudstore_data_1.dbf' USE LOGFILE GROUP lg_cloudstor INITIAL_SIZE 1024M AUTOEXTEND_SIZE 256M ENGINE NDBCLUSTER;
ALTER TABLESPACE ts_cloudstore ADD DATAFILE 'cloudstore_data_2.dbf' INITIAL_SIZE 1024M AUTOEXTEND_SIZE 256M ENGINE NDBCLUSTER;

创建表
create table disktable(  \
id int  auto_increment primary key, \
c1 varchar(50) not null, \
c2 varchar(30) default null, \
c3 date default null, \
index(c1))TABLESPACE ts_cloudstore STORAGE DISK ENGINE=ndbcluster

删除
drop table disktable;
alter tablespace ts_cloudstore drop datafile 'cloudstore_data_1.dbf' engine ndbcluster;
alter tablespace ts_cloudstore drop datafile 'cloudstore_data_2.dbf' engine ndbcluster;

drop tablespace ts_cloudstore engine ndbcluster;

drop logfile group lg_cloudstor engine ndbcluster;