1. 先了解一下你是否應該用MySQL集群。
減少數據中心結點壓力和大數據量處理，采用把MySQL分布，一個或多個application對應一個MySQL數據庫。把幾個MySQL數據庫公用的數據做出共享數據，例如購物車，用戶對象等等，存在數據結點裡面。其他不共享的數據還維持在各自分布的MySQL數據庫本身中。
2. 集群MySQL中名稱概念.(如上圖)
1)Sql結點(SQL node--上圖對應為MySQLd):分布式數據庫。包括自身數據和查詢中心結點數據.
2)數據結點(Data node -- ndbd):集群共享數據(內存中).
3)管理服務器(Management Server – ndb_mgmd):集群管理SQL node,Data node.
3.配置
MySQL-max版本，當然現在MySQL集群系統windonws平台上面不被支持.
安裝MySQL就不多說了，網上一大堆，簡明扼要。
A:192.168.1.251 – Data node和Management Server.
B:192.168.1.254 – SQL node.
當然，你也可以讓一個機器同時為3者。
A,B my.inf加上：
- MySQLD]
- ndbcluster # run NDB engine
- ndb-connectstring=192.168.1.251 # location of MGM node
- # Options for ndbd process: [MySQL_CLUSTER]
- ndb-connectstring=192.168.1.251 # location of MGM node
- A: /var/lib/MySQL-cluster/config.ini [NDBD DEFAULT]
- NoOfReplicas=1
- # Number of replicas DataMemory=80M
- # How much memory to allocate for data storage IndexMemory=18M
- # How much memory to allocate for index storage
- # For DataMemory and IndexMemory, we have used the
- # default values. Since the "world" database takes up
- # only about 500KB, this should be more than enough for
- # this example Cluster setup. # TCP/IP options: [TCP DEFAULT]
- portnumber=2202 # This the default; however, you can use any
- # port that is free for all the hosts in cluster
- # Note: It is recommended beginning with MySQL 5.0 that
- # you do not specify the portnumber at all and simply allow
- # the default value to be used instead # Management process options: [NDB_MGMD] hostname=192.168.1.251
- # Hostname or IP address of MGM node datadir=/var/lib/MySQL-cluster # Directory for MGM node logfiles # Options for data node "A": [NDBD]
- # (one [NDBD] section per data node) hostname=192.168.1.251
- # Hostname or IP address datadir=/usr/local/MySQL/data
- # Directory for this data nodes datafiles
- # SQL node options: [MySQLD] hostname=192.168.1.254
- #[MySQ
