群集 双机热备,MySQL群集双机模拟方案

MySQL群集双机模拟方案 - 应用软件 - 电脑教程网

MySQL群集双机模拟方案

日期:2006-07-26   荐:
  硬件配置    普通PC server * 2 (最小集群环境需要4台服务器)    模拟环境    red hat linux9 for x86 (or red hat AS 2以上版本),glibc-2.2, static, gcc    MySQL版本4.1.12 binares    mysql-max binary版本目前只支持linux、max os x和solaris    本方案不涉及从源代码编译安装    主机 IP地址 用途    ndb1_mgmd_sqld 1192.168.1.100 Ndb node1 mgmd node1 sqld node1  ndb2_sqld2 192.168.1.200 Ndb node2 sqld node2    Mgmd:management server  sqld:mysql server  ndb:storaged node (share-nothing,base in memory)    安装    从http://dev.mysql.com/downloads/mysql/4.1.html下载mysql-max-4.1.12-pc-linux-gnu-i686.tar.gz到/var/tmp  Storage and SQL Node Installation    在两台主机上执行如下过程    shell>groupadd mysql  shell>useradd -g mysql mysql  shell>tar zxfv mysql-max-4.1.12-pc-linux-gnu-i686.tar.gz  shell>cp -vr mysql-max-4.1.12-pc-linux-gnu-i686 /usr/local/mysql-max-4.1.12-pc-linux-gnu-i686  shell>cd /usr/local  shell>ln -s mysql-max-4.1.12-pc-linux-gnu-i686 mysql  shell>cd mysql;scripts/mysql_install_db –user=mysql  shell>chown -R root .;chown -R mysql data;chgrp -R mysql .  shell>cp support-files/mysql.server /etc/rc.d/init.d/  shell>chmod x /etc/rc.d/init.d/mysql.server  shell>chkconfig --add mysql.server  shell>chkconfig –level 3 mysql.server off  Management Node Installation    在主机ndb1_mgmd_sqld1上执行如下过程    shell>cd /var/tmp  shell>tar -zxvf mysql-max-4.1.12a-pc-linux-gnu-i686.tar.gz /usr/local/bin '*/bin/ndb_mgm*'  Configuration  Configuring the Storage and SQL Nodes    在两台主机上执行如下过程:    shell>vi /etc/my.cnf  [MYSQLD]             # Options for mysqld process:  ndbcluster           # run NDB engine  ndb-connectstring=192.168.1.100  # location of MGM node    [MYSQL_CLUSTER]         # Options for ndbd process:  ndb-connectstring=192.168.1.100  # location of MGM node    Configuring the Management Node    在主机ndb1_mgmd_sqld1上执行如下过程    shell>mkdir /var/lib/mysql-cluster  shell>cd /var/lib/mysql-cluster  shell>vi config.ini  [NDBD DEFAULT]   # Options affecting ndbd processes on all data nodes:  NoOfReplicas=2   # Number of replicas  DataMemory=80M   # How much memory to allocate for data storage  IndexMemory=52M  # 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 DEFAULT]    [NDB_MGMD]        # Management process options:  hostname=192.168.1.100 # Hostname or IP address of MGM node  datadir=/var/lib/mysql-cluster  # Directory for MGM node logfiles    [NDBD]             # Options for data node "A":  # (one [NDBD] section per data node)  HostName=192.168.1.100      # Hostname or IP address  DataDir=/usr/local/mysql/data  # Directory for this data node's datafiles    [NDBD]             # Options for data node "B":  hostname=192.168.1.200      # Hostname or IP address  datadir=/usr/local/mysql/data  # Directory for this data node's datafiles    [MYSQLD]             # SQL node options:  hostname=192.168.1.100     # Hostname or IP address  # Directory for SQL node's datafiles  # (additional mysqld connections can be  # specified for this node for various  # purposes such as running ndb_restore)    [MYSQLD] # SQL node options:  hostname=192.168.1.200     # Hostname or IP address  # Directory for SQL node's datafiles  # (additional mysqld connections can be  # specified for this node for various  # purposes such as running ndb_restore)    第一次启动    在主机ndb1_mgmd_sqld1上执行如下过程    shell> ndb_mgmd -f /var/lib/mysql-cluster/config.ini    在两台主机上执行如下过程    shell>ndbd –initial (note:--initial选项只能在第一次启动的时候使用)  shell>/etc/init.d/mysql.server start    测试    在主机ndb1_mgmd_sqld1上执行如下过程  shell> ndb_mgm  -- NDB Cluster -- Management Client --  ndb_mgm> show  Connected to Management Server at: localhost:1186  Cluster Configuration  ---------------------   [ndbd(NDB)]   2 node(s)  id=2  @192.168.0.100 (Version: 4.1.12, Nodegroup: 0, Master)  id=3  @192.168.0.200 (Version: 4.1.12, Nodegroup: 0)    [ndb_mgmd(MGM)] 1 node(s)  id=1  @192.168.0.100 (Version: 4.1.12)    [mysqld(SQL)]  1 node(s)  id=4  (Version: 4.1.12)    出现如上信息则表示mysql群集安装成功    数据抽样测试    在主机ndb1_mgmd_sqld1上执行如下过程    shell>/usr/local/mysql/bin/mysql -u root test  MySQL>DROP TABLE IF EXISTS City;  CREATE TABLE City (  ID int(11) NOT NULL auto_increment,  Name char(35) NOT NULL default '',  CountryCode char(3) NOT NULL default '',  District char(20) NOT NULL default '',  Population int(11) NOT NULL default '0',  PRIMARY KEY (ID)  ) ENGINE=NDBCLUSTER;    MySQL>INSERT INTO City VALUES (1,'Kabul','AFG','Kabol',1780000);  INSERT INTO City VALUES (2,'Qandahar','AFG','Qandahar',237500);  INSERT INTO City VALUES (3,'Herat','AFG','Herat',186800);    在主机ndb2_sqld2上执行如下过程    shell>/usr/local/mysql/bin/mysql -u root mysql  MySQSL>select * from City;    如果成功显示数据信息,则表示集群已经成功启动    Safe Shutdown and Restart    在主机ndb1_mgmd_sqld1上执行如下过程    shell>ndb_mgm -e shutdown (关闭集群服务器,storage node也会自动被关闭)    在两台主机上执行如下过程    shell>/etc/init.d/mysql.server stop    重新启动集群(顺序不能弄错)    在主机ndb1_mgmd_sqld1上执行如下过程    shell> ndb_mgmd -f /var/lib/mysql-cluster/config.ini    在两台主机上执行如下过程    shell>/usr/local/mysql/bin/ndbd    启动完ndbd进程后启动sqld进程    shell>/etc/init.d/mysql.server start    附:    config.ini中各部分解释    [COMPUTER]: 定义群集主机.    [NDBD]: 定义群集数据节点.    [MYSQLD]: 定义Sql server节点.    [MGM|NDB_MGMD]: Defines the management server node in the cluster.  [TCP]: Defines TCP/IP connections between nodes in the cluster, with TCP/IP being the default connection protocol.  [SHM]: Defines shared-memory connections between nodes. 在MySQL 4.1.9之前,这个功能必须使用--with-ndb-shm option编译进去, 从MySQL 4.1.9-max版本开始, it is enabled by default
标签: