这个不必多言吧,到 MySQL 网站上面下载就是了。MySQL Cluster 的英文部署测试手册很简明,这里和其内容基本一样。喜欢读英文版的朋友可以直接下载,略过本文。
2. 安装
先解压,然后创建一个 symbolic link:
michael@linux:~$ tar xvf mysql-cluster-gpl-7.2.4-linux2.6-x86_64.tar
michael@linux:~$ ln -s mysql-cluster-gpl-7.2.4-linux2.6-x86_64 mysqlc
如果你愿意,可以将~/mysqlc/bin加入到你的 path 里,方便使用。
3. 配置
作为在开发环境上第一次部署,还是以测试为主要目的。一个完整的 MySQL Cluster 由 MySQL Server,Data Nodes,Management Node 三部分组成。首先我们为它们创建一些必须的目录:
michael@linux:~$ mkdir mysql-cluster
michael@linux:~$ cd mysql-cluster
michael@linux:~$ mkdir conf ndb_data mysqld_data
然后在conf目录下创建如下两个文件,分别是config.ini和my.cnf,内容如下:
config.ini
用于 MySQL Server 的配置,端口号port根据你自己的情况设定。
[mysqld]
ndbcluster
datadir=/home/user1/my_cluster/mysqld_data
basedir=/home/user1/mysql-cluster
port=5050
my.cnf
该文件用于配置各结点的 NodeId 和 Data Nodes 与 Management Node 的数据目录。
[ndb_mgmd]
hostname=localhost
datadir=/home/user1/my_cluster/ndb_data
NodeId=1
[ndbd default]
noofreplicas=2
datadir=/home/user1/my_cluster/ndb_data
[ndbd]
hostname=localhost
NodeId=3
[ndbd]
hostname=localhost
NodeId=4
[mysqld]
NodeId=50
这时你的目录结构应该如下:
~
+-- /mysql-cluster-gpl-7.2.4-linux2.6-x86_64
+-- /mysqlc ->mysql-cluster-gpl-7.2.4-linux2.6-x86_64
+-- /mysql-cluster
+-- /conf
+-- /ndb_data
+-- /mysqld_data
4. 运行
MySQL Cluster 的启动顺序是有要求的,如下:
Management Node
Data Nodes
MySQL Server
命令如下:
michael@linux:~$ cd ../mysql-cluster
michael@linux:~/mysql-cluster$ $HOME/mysqlc/bin/ndb_mgmd -f conf/config.ini --initial --configdir=$HOME/mysql-cluster/conf/
michael@linux:~/mysql-cluster$ $HOME/mysqlc/bin/ndbd -c localhost:1186
michael@linux:~/mysql-cluster$ $HOME/mysqlc/bin/ndbd -c localhost:1186
检查已经启动的结点的状态,命令为:
poecahnt@linux:~$ $HOME/mysqlc/bin/ndb_mgm -e show
输出如下:
Connected to Management Server at: localhost:1186
Cluster Configuration
---------------------
[ndbd(NDB)] 2 node(s)
id=3@127.0.0.1 (mysql-5.5.19 ndb-7.2.4, Nodegroup: 0, Master)
id=4@127.0.0.1 (mysql-5.5.19 ndb-7.2.4, Nodegroup: 0)
[ndb_mgmd(MGM)] 1 node(s)
id=1@127.0.0.1 (mysql-5.5.19 ndb-7.2.4)
[mysqld(API)] 1 node(s)
id=50 @127.0.0.1 (mysql-5.5.19 ndb-7.2.4)
表示已经可以启动 MySQL Server 了。最后启动 MySQL Server,命令为:
michael@linux:~/mysql-cluseter$ $HOME/mysqlc/bin/mysqld --defaults-file=conf/my.cnf &
输出信息如下:
120223 15:29:02 InnoDB: The InnoDB memory heap is disabled
120223 15:29:02 InnoDB: Mutexes and rw_locks use GCC atomic builtins
120223 15:29:02 InnoDB: Compressed tables use zlib 1.2.3
120223 15:29:02 InnoDB: Using Linux native AIO
120223 15:29:02 InnoDB: Initializing buffer pool, size = 128.0M
120223 15:29:02 InnoDB: Completed initialization of buffer pool
120223 15:29:02 InnoDB: highest supported file format is Barracuda.
120223 15:29:02 InnoDB: Waiting for the background threads to start
120223 15:29:03 InnoDB: 1.1.8 startedlog sequence number 1595675
120223 15:29:04 [Note] NDB: NodeID is 50, management server 'localhost:1186'
120223 15:29:04 [Note] NDB[0]: NodeID: 50, all storage nodes connected
120223 15:29:04 [Warning] NDB: server id set to zero - changes logged to bin log with server id zero will be logged with another server id by slave mysqlds
120223 15:29:04 [Note] Starting Cluster Binlog Thread
120223 15:29:04 [Note] Event Scheduler: Loaded 0 events
120223 15:29:04 [Note] $HOME/mysqlc/bin/mysqld: ready for connections.
Version: '5.5.19-ndb-7.2.4-gpl' socket: '/tmp/mysql.sock' port: 5050 MySQL Cluster Community Server (GPL)
120223 15:29:05 [Note] NDB: Creating mysql.ndb_schema
120223 15:29:08 [Note] NDB Binlog: CREATE TABLE Event: REPL$mysql/ndb_schema
120223 15:29:09 [Note] NDB Binlog: logging ./mysql/ndb_schema (UPDATED,USE_WRITE)
120223 15:29:09 [Note] NDB: Creating mysql.ndb_apply_status
120223 15:29:09 [Note] NDB Binlog: CREATE TABLE Event: REPL$mysql/ndb_apply_status
120223 15:29:09 [Note] NDB Binlog: logging ./mysql/ndb_apply_status (UPDATED,USE_WRITE)
120223 15:29:09 [Note] NDB: missing frm for mysql.ndb_index_stat_sample, discovering...
120223 15:29:09 [Note] NDB: missing frm for mysql.ndb_index_stat_head, discovering...
2012-02-23 15:29:10 [NdbApi] INFO -- Flushing incomplete GCI:s <579/14
2012-02-23 15:29:10 [NdbApi] INFO -- Flushing incomplete GCI:s <579/14
120223 15:29:10 [Note] NDB Binlog: starting log at epoch 579/14
120223 15:29:10 [Note] NDB Binlog: ndb tables writable
5. 测试
连接 MySQL Server 进行测试,确认可以用ndb存储引擎来创建数据库中的表,如下:
michael@linux:~$ $HOME/mysqlc/bin/mysql -h 127.0.0.1 -P 5050
mysql>create database clusterdb
mysql>use clusterdb
mysql>insert into simples values (1),(2),(3),(4)
mysql>select * from simples
+----+
| id |
+----+
| 3 |
| 1 |
| 2 |
| 4 |
+----+
6. 停止
MySQL Cluster 必须手动停止,Data Nodes 可以用 ndb_mgm 来停止:
michael@linux:~$ $HOME/mysqlc/bin/mysqladmin -h 127.0.0.1 -P 5050 shutdown
如果提示:
/home/michael/mysqlc/bin/mysqladmin: shutdown failederror: 'Access deniedyou need (at least one of) the SHUTDOWN privilege(s) for this operation'
则在shutdown命令前加上sudo。
michael@linux:~$ $HOME/mysqlc/bin/ndb_mgm -e shutdown
正常停止的信息类似如下:
120223 16:44:11 [Note] /home/michael/mysqlc/bin/mysqld: Normal shutdown
michael@linux:~/mysql-cluster$ 120223 16:44:11 [Note] Event Scheduler: Purging the queue. 0 events
120223 16:44:13 [Warning] /home/michael/mysqlc/bin/mysqld: Forcing close of thread 2 user: 'michael'
120223 16:44:13 [Note] Stopping Cluster Utility thread
120223 16:44:13 [Note] Stopping Cluster Index Stats thread
120223 16:44:13 [Note] Stopping Cluster Binlog
120223 16:44:13 [Note] Stopping Cluster Index Statistics thread
120223 16:44:14 InnoDB: Starting shutdown...
120223 16:44:15 InnoDB: Shutdown completedlog sequence number 1595675
120223 16:44:15 [Note] /home/michael/mysqlc/bin/mysqld: Shutdown complete
7. 总结
有序启动:Management Node,Data Nodes,MySQL Server
配置项与各节点的对应
每个结点都单独启动
Management Node 提供状态查看等多种功能
环境搭建步骤:1.搭建前的准备:
1)JDK下载,下载Java SE Development Kit 7(这是Java开发标准版)
2)Eclipse下载,下载Eclipse IDE for Java EE Developers,用于开发J2ee项目
3)MySQL下载,开发j2ee项目,数据库是必须的
需要说明的是Tomcat,eclipse,MySQL都是不用安装的,解压就行。
2、Java环境变量设置
1)首先添加系统变量JAVA_HOME,值为JDK安装目录(这一步不是必须的,但是推荐这么做),然后在path路径后添加%JAVA_HOME%/bin,最后再添加一个classpath,值为".",这个classpath我暂时还不知道是干什么用的。
Tomcat环境变量设置,分别添加3个系统变量
CATALINA_BASE E:/tomcat7
CATALINA_HOME E:/tomcat7
CATALINA_TMPDIR Etomcat7/temp
2)然后在path变量中添加%CATALINA_HOME%/bin
3)这样以后只要打开cmd 输入startup就可以启动tomcat服务器,然后输入shutdown就可以关闭tomcat服务器。(目前还不知道CATALINA_BASE和CATALINA_TMPDIR的用途,不过先设好吧,不知道哪里会用上)
安装tomcat后,打开cmd输入startup,然后在浏览器中输入localhost:8080(tomcat默认8080端口),看到页面就证明成功了。
3、MySQL解压后即完成了安装,但此时还不能用,因为还没启动服务,cmd进入mysql/bin目录,运行mysql --console即启动了MySQL服务,关闭该窗口即关闭了MySQL服务。
另外我们也可以使用服务来启动和停止,
启动:net start mysql
停止:net stop mysql
需要注意的是,net stop和net start后面的mysql是MySQL服务器安装时的服务名称,只有使用二进制的MySQL安装程序安装时才会有该服务,该服务可以在Windows的服务管理列表中找到。
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