1. 先瞭解一下你是否應該用MySQL叢集。
減少資料中心結點壓力和大資料量處理,採用把MySQL分布,一個或多個application對應一個MySQL資料庫。把幾個MySQL資料庫公用的資料做出共用資料,例如購物車,使用者物件等等,存在資料結點裡面。其他不共用的資料還維持在各自分布的MySQL資料庫本身中。
2. 叢集MySQL中名稱概念.(如上圖)
1)Sql結點(SQL node--上圖對應為MySQLd):分散式資料庫。包括自身資料和查詢中心結點資料.
2)資料結點(Data node -- ndbd):叢集共用資料(記憶體中).
3)管理伺服器(Management Server – ndb_mgmd):叢集管理SQL node,Data node.
3.配置
MySQL-max版本,當然現在MySQL叢集系統windonws平台上面不被支援.
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 node"s datafiles
- # SQL node options: [MySQLD] hostname=192.168.1.254
- #[MySQLD] #這個相當於192.168.1.251