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MySQL叢集安裝與配置 文章目錄[隱藏]
- 一、mysql叢集安裝
- 二、節點配置
- 三、初次開機節點
- 四、測試服務是否正常
- 五、安全關閉和重啟
MySQL Cluster 是 MySQL 適合於分散式運算環境的高實用、高冗餘版本。它採用了NDB Cluster 儲存引擎,允許在1個 Cluster 中運行多個MySQL伺服器。MySQL Cluster 能夠使用多種故障切換和Server Load Balancer選項配置NDB儲存引擎,但在 Cluster 層級上的儲存引擎上做這個最簡單。下面我們簡單介紹MySQL Cluster如何安裝與配置。
基本設定
管理(MGM)節點:192.168.0.111
MySQL伺服器(SQL)節點:192.168.0.110
資料(NDBD)節點"A":192.168.0.112
資料(NDBD)節點"B":192.168.0.113
一、mysql叢集安裝
mysql的叢集安裝可以有三種方式,一是直接下載二進位使用,二是使用rpm安裝,三是源碼編譯。我們這裡使用第一種安裝。
1、每個節點做相同的操作
- cd /tmp
- wget http://cdn.mysql.com/Downloads/MySQL-Cluster-7.2/mysql-cluster-gpl-7.2.8-linux2.6-i686.tar.gz
- tar xzf mysql-cluster-gpl-7.2.8-linux2.6-i686.tar.gz
- mv mysql-cluster-gpl-7.2.8-linux2.6-i686 /usr/local/mysql
注意:這裡下載的是32位的二進位包,如果你的系統是64位,需要下載64位的包。
2、儲存節點和SQL節點安裝
- groupadd mysql
- useradd -g mysql mysql
- /usr/local/mysql/scripts/mysql_install_db --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --user=mysql
- chown -R root /usr/local/mysql
- chown -R mysql /usr/local/mysql/data
- chgrp -R mysql /usr/local/mysql
- cp /usr/local/mysql/support-files/my-medium.cnf /etc/my.cnf
二、節點配置
1、配置儲存節點和SQL節點
- vi /etc/my.cnf
- 類似於:
- # Options for mysqld process:
- [MYSQLD]
- ndbcluster # run NDB engine
- ndb-connectstring=198.168.0.111 # location of MGM node
-
- # Options for ndbd process:
- [MYSQL_CLUSTER]
- ndb-connectstring=198.168.0.111 # location of MGM node
2、組態管理節點
- mkdir /var/lib/mysql-cluster
- cd /var/lib/mysql-cluster
- vi config.ini
-
- config.ini檔案應類似於:
-
- # Options affecting ndbd processes on all data nodes:
- [NDBD DEFAULT]
- NoOfReplicas=2 # 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=198.168.0.111 # 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=198.168.0.112 # Hostname or IP address
- datadir=/usr/local/mysql/data # Directory for this data node‘s datafiles
-
- # Options for data node "B":
- [NDBD]
- hostname=198.168.0.113 # Hostname or IP address
- datadir=/usr/local/mysql/data # Directory for this data node‘s datafiles
-
- # SQL node options:
- [MYSQLD]
- hostname=198.168.0.110 # Hostname or IP address
- # (additional mysqld connections can be
- # specified for this node for various
- # purposes such as running ndb_restore)
三、初次開機節點
1、啟動管理節點
- /usr/local/mysql/bin/ndb_mgmd --configdir=/var/lib/mysql-cluster -f /var/lib/mysql-cluster/config.ini
2、啟動資料節點
初次開機需要--initial參數初始化,下一次啟動就不需要了。
- /usr/local/mysql/bin/ndbd --initial
3、啟動SQL節點
- /usr/local/mysql/bin/mysqld_safe &
4、檢查狀態
如果一切正常,執行命令 /usr/local/mysql/bin/ndb_mgm -e show應該會輸出類似資訊:
[[email protected] mysql-cluster]# /usr/local/mysql/bin/ndb_mgm -e show
Connected to Management Server at: localhost:1186
Cluster Configuration
---------------------
[ndbd(NDB)] 2 node(s)
id=2 @192.168.0.112 (mysql-5.5.27 ndb-7.2.8, Nodegroup: 0, Master)
id=3 @192.168.0.113 (mysql-5.5.27 ndb-7.2.8, Nodegroup: 0)
[ndb_mgmd(MGM)] 1 node(s)
id=1 @192.168.0.111 (mysql-5.5.27 ndb-7.2.8)
[mysqld(API)] 1 node(s)
id=4 @192.168.0.110 (mysql-5.5.27 ndb-7.2.8)
四、測試服務是否正常
在SQL節點上執行如下資料庫操作:
- /usr/local/mysql/bin/mysql -uroot -p
- mysql> create database clusterdb;use clusterdb;
- mysql> create table simples (id int not null primary key) engine=ndb;
- mysql> insert into simples values (1),(2),(3),(4);
- mysql> select * from simples;
如果出現:
+----+
| id |
+----+
| 1 |
| 2 |
| 4 |
| 3 |
+----+
則表示工作正常。
五、安全關閉和重啟
1、關閉mysql叢集,可在管理節點在執行如下命令:
- /usr/local/mysql/bin/ndb_mgm -e shutdown
2、重啟管理節點
- /usr/local/mysql/bin/ndb_mgmd --configdir=/var/lib/mysql-cluster -f /var/lib/mysql-cluster/config.ini
3、重啟資料節點
- /usr/local/mysql/bin/ndbd
參考:http://dev.mysql.com/doc/refman/5.1/zh/ndbcluster.html
轉載請標明文章來源:《https://www.centos.bz/2012/11/mysql-cluster-install-configure/》
MySQL叢集安裝與配置