MySql节点管理安装步骤
时间：2010-10-08 来源：mydear
对大家推荐很好使用的MySql节点系统，像让大家对MySql节点系统有所了解，然后对MySql节点系统全面讲解介绍，希望对大家有用在向大家 详细介绍MySql节点之前，首先让大家了解下MySql节点，然后全面介绍MySql节点，希望对大家有用。这篇文档旨在介绍如何安装配置基于2台服务 器的MySQL集群。并且实现任意一台服务器出现问题或宕机时MySql集群依然能够继续运行。
安装环境及软件包：2台PCmysql-6.0.0-alpha.tar.gzCentos5SerA:192.168.1.50SerB:192.168.1.8
1、在SerA和SerB上安装MySQL以下步骤需要在SerA和SerB上各做一次
- # mv mysql-6.0.0-alpha.tar.gz /tmp/package
- # cd /tmp/package
- # groupadd mysql
- # useradd -g mysql mysql
- # tar -zxvf mysql-6.0.0-alpha.tar.gz
- # rm -f mysql-6.0.0-alpha.tar.gz
- # mv mysql-6.0.0-alpha mysql
- # cd mysql
- # ./configure --prefix=/usr/local --with-extra-charsets=complex --with-plugin-ndbcluster
- --with-plugin-partition --with-plugin-innobase --with-unix-socket-path=/usr/local/var/mysql.sock
- # make && make install
- #ln -s /usr/local/libexec/ndbd /usr/bin
- #ln -s /usr/local/libexec/ndb_mgmd /usr/bin
- #ln -s /usr/local/libexec/ndb_cpcd /usr/bin
- #ln -s /usr/local/libexec/mysqld /usr/bin
- #ln -s /usr/local/libexec/mysqlmanager /usr/bin
- #mysql_install_db --user=mysql
我用的是:mysql-5.0.85-linux-i686.tar.gz
二、安装并配置MySql节点
以下步骤需要在SerA和SerB上各做一次
1.配置管理MySql节点配置文件：
- # mkdir /var/lib/mysql-cluster
- # cd /var/lib/mysql-cluster
- # vi config.ini
- 在config.ini中添加如下内容：
- [ndbd default]
- NoOfReplicas= 2
- MaxNoOfConcurrentOperations= 10000
- # Amount of memory required=(SizeofDatabase * NumberOfReplicas * 1.1 ) / NumberOfDataNodes
- DataMemory= 128M
- IndexMemory= 24M
- TimeBetweenWatchDogCheck= 30000
- DataDir=/var/lib/mysql-cluster
- MaxNoOfOrderedIndexes= 512
- StartPartialTimeout=100
- StartPartitionedTimeout=100
- ArbitrationTimeout=5000
- TransactionDeadlockDetectionTimeout=5000
- HeartbeatIntervalDbDb=5000
- StopOnError=0
- [ndb_mgmd default]
- DataDir=/var/lib/mysql-cluster
- [ndb_mgmd]
- Id=1
- HostName= 192.168.1.50
- [ndb_mgmd]
- Id=2
- HostName= 192.168.1.8
- [ndbd]
- Id= 3
- HostName= 192.168.1.50
- [ndbd]
- Id= 4
- HostName= 192.168.1.8
- [mysqld]
- ArbitrationRank=2 (非常重要,全靠有它,才可以形成仲裁竞争,从而当另一个机子当了时,此机还可以有知道partion完整的节点)
- [mysqld]
- ArbitrationRank=2
- [mysqld] (多出的这项是留给恢复时使用的.)
- [mysqld] (多出的这项是留给恢复时使用的.)
- [tcp default]
- PortNumber= 63132
- [separator]
2.配置通用my.cnf文件，mysqld及ndbd,ndb_mgmd均使用此文件.
- # vi /etc/my.cnf
- 在my.cnf中添加如下内容：
- [mysqld]
- datadir=/usr/local/var
- socket=/usr/local/var/mysql.sock
- # Default to using old password format for compatibility with mysql 3.x
- # clients (those using the mysqlclient10 compatibility package).
- old_passwords=1
- default-storage-engine=ndbcluster
- ndbcluster
- ndb-connectstring=192.168.1.50,192.168.1.8
- [ndbd]
- connect-string=192.168.1.50,192.168.1.8
- [ndb_mgm]
- connect-string=192.168.1.50,192.168.1.8
- [ndb_mgmd]
- config-file=/var/lib/mysql-cluster/config.ini
- [mysql_cluster]
- ndb-connectstring=192.168.1.50,192.168.1.8
- [mysql.server]
- user=mysql
- basedir=/usr/local/
- [mysqld_safe]
- log-error=/var/log/mysqld.log
- #pid-file=/var/run/mysqld/mysqld.pid
- [mysql]
- #socket=/usr/local/var/mysql.sock
- [mysqladmin]
- #socket=/usr/local/var/mysql.sock
- [ndb_restore default] 保存退出后.
三.启动管理MySql节点SerA为：
- [root@SerA ~]# ndb_mgmd --ndb_nodeid=1
- Cluster configuration warning:
- arbitrator with id 1 and db node with id 3 on same host 192.168.1.50
- arbitrator with id 2 and db node with id 4 on same host 192.168.1.8
- arbitrator with id 5 has no hostname specified
- arbitrator with id 6 has no hostname specified
- Running arbitrator on the same host as a database node may
- cause complete cluster shutdown in case of host failure.
注:在启动时有一个警告提示说MySql节点1和3，2和4的arbitrator一样，可能引起整个集群失败。（可以不用放在心上）启动管理MySql节点SerB为：[root@SerB ~]# ndb_mgmd --ndb_nodeid=2.
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