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由于公司网站流量的飞速增长,数据库负载急剧攀增,为了升级网站数据库架构,现在对MySQL Cluster(集群)进行安装测试。
1、准备服务器
现在,我们计划建立有6个节点的MySQL CLuster体系,两台机器复用数据节点和SQL节点,所以需要用到4台机器,分别做如下用途:
hostname IP地址 应用服务
DB1 192.168.6.162 MGM
DB2 192.168.6.160 NDBD,MYSQLD
DB3 192.168.6.188 NDBD2, MYSQLD
DB4 192.168.6.191 MYSQLD
注意事项及其他
每个节点的操作系统都是Linux,下面的描述中将使用主机名,不再使用IP地址来表示。由于MySQL Cluster采用TCP/IP方式连接,并且节点之间的数据传输没有加密,因此这个体系最好只在单独的子网中运行,并且考虑到传输的速率,强烈建议不要跨越公网使用这个体系。所需的MySQL软件请事先在 http://dev.mysql.com/downloads 下载。实际上整个体系可以在一个单独的实体计算机上运行成功,当然了,必须设定不同的目录以及端口等,只能作为测试时使用。
2.安装配置管理节点(DB1)MGM
# groupadd mysql
# useradd -g mysql -d /usr/local/mysql/var -M mysql
# tar -zxvf mysql-cluster-gpl-7.1.3.tar.gz
# cd mysql-cluster-gpl-7.1.3
# ./configure --prefix=/usr/local/mysql/ --with-charset=utf8 --with-collation=utf8_general_ci --with-client-ldflags=-all-static -with-mysqld-ldflags=-all-static --enable-assembler --with-extra-charsets=complex --enable-thread-safe-client --with-big-tables --with-readline --with-ssl --with-embedded-server --enable-local-infile --with-unix-socket-path=/usr/local/mysql/tmp/mysql.sock --sysconfdir=/usr/local/mysql/etc --without-debug --with-mysqld-user=mysql --with-plugins=max
# make
# make install
# cd /usr/local/mysql
# mkdir mysql-cluster
# cd mysql-cluster
# vi config.ini
[NDBD DEFAULT]
NoOfReplicas= 2
[MYSQLD DEFAULT]
[NDB_MGMD DEFAULT]
DataDir= /usr/local/mysql/mysql-cluster
[NDB_MGMD]
HostName= 192.168.1.20
[NDBD]
HostName= 192.168.1.21
DataDir= /usr/local/mysql/mysql-cluster
[NDBD]
HostName= 192.168.1.22
DataDir= /usr/local/mysql/mysql-cluster
[MYSQLD]
HostName= 192.168.1.21
[MYSQLD]
HostName= 192.168.1.22
[MYSQLD]
HostName= 192.168.1.23
# ./libexec/ndb_mgmd -f /usr/local/mysql/mysql-cluster/config.ini
# ./bin/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 (not connected, accepting connect from 192.168.1.21)
id=3 (not connected, accepting connect from 192.168.1.22)
[ndb_mgmd(MGM)] 1 node(s)
id=1 @192.168.1.20 (Version: 5.1.44)
[mysqld(API)] 3 node(s)
id=4 (not connected, accepting connect from 192.168.1.21)
id=5 (not connected, accepting connect from 192.168.1.22)
id=6 (not connected, accepting connect from 192.168.1.23)
可以看到ndb_mgmd 是 连上的,nbd 和 mysqld 还没有连上~
3.安装配置在两个数据SQL节点(DB2,DB3)ndbd mysql
# groupadd mysql
# useradd -g mysql -d /usr/local/mysql/var -M mysql
# tar -zxvf mysql-cluster-gpl-7.1.3.tar.gz
# cd mysql-cluster-gpl-7.1.3
# ./configure --prefix=/usr/local/mysql/ --with-charset=utf8 --with-collation=utf8_general_ci --with-client-ldflags=-all-static -with-mysqld-ldflags=-all-static --enable-assembler --with-extra-charsets=complex --enable-thread-safe-client --with-big-tables --with-readline --with-ssl --with-embedded-server --enable-local-infile --with-unix-socket-path=/usr/local/mysql/tmp/mysql.sock --sysconfdir=/usr/local/mysql/etc --without-debug --with-mysqld-user=mysql --with-plugins=max
# make
# make install
# cd /usr/local/mysql
# mkdir mysql-cluster etc
# chown root.mysql . -R
# ./bin/mysql_install_db --user=mysql
# vi ./etc/my.cnf
[mysqld]
basedir = /usr/local/mysql/
datadir = /usr/local/mysql/var
user = mysql
port = 3306
socket = /usr/local/mysql/tmp/mysql.sock
ndbcluster
ndb-connectstring=192.168.1.20
[mysql_cluster]
ndb-connectstring=192.168.1.20
./libexec/ndbd --initial ### 第一次启动需要 --initial 以后在启动不需要加
随后启动两台ndbd 节点上的 mysql 服务
./bin/mysqld_safe --user=mysql &
然后在 MGM 服务器上查看
./bin/ndb_mgm
-- NDB Cluster -- Management Client --
ndb_mgm> show
Cluster Configuration
---------------------
[ndbd(NDB)] 2 node(s)
id=2 @192.168.1.21 (Version: 5.1.44, Nodegroup: 0)
id=3 @192.168.1.22 (Version: 5.1.44, Nodegroup: 0, Master)
[ndb_mgmd(MGM)] 1 node(s)
id=1 @192.168.1.20 (Version: 5.1.44)
[mysqld(API)] 3 node(s)
id=4 @192.168.1.21 (Version: 5.1.44)
id=5 @192.168.1.22 (Version: 5.1.44)
id=6 (not connected, accepting connect from 192.168.1.23)
从上面可以看出 两个 ndbd 节点 和 ndbd 上的两个mysql 服务已经连接上了。
4、安装配置SQL节点(DB4)
# groupadd mysql
# useradd -g mysql -d /usr/local/mysql/var -M mysql
# tar -zxvf mysql-cluster-gpl-7.1.3.tar.gz
# cd mysql-cluster-gpl-7.1.3
# ./configure --prefix=/usr/local/mysql/ --with-charset=utf8 --with-collation=utf8_general_ci --with-client-ldflags=-all-static -with-mysqld-ldflags=-all-static --enable-assembler --with-extra-charsets=complex --enable-thread-safe-client --with-big-tables --with-readline --with-ssl --with-embedded-server --enable-local-infile --with-unix-socket-path=/usr/local/mysql/tmp/mysql.sock --sysconfdir=/usr/local/mysql/etc --without-debug --with-mysqld-user=mysql --with-plugins=max
# make
# make install
# cd /usr/local/mysql
# mkdir mysql-cluster etc
# chown root.mysql . -R
# ./bin/mysql_install_db --user=mysql
# vi ./etc/my.cnf
[mysqld]
basedir = /usr/local/mysql/
datadir = /usr/local/mysql/var
user = mysql
port = 3306
socket = /usr/local/mysql/tmp/mysql.sock
ndbcluster
ndb-connectstring=192.168.1.20
[mysql_cluster]
ndb-connectstring=192.168.1.20
启动 mysql 服务
# ./bin/mysqld_safe --user=mysql &
回到 MGM 上查看是否正常
./bin/ndb_mgm
-- NDB Cluster -- Management Client --
ndb_mgm> show
Cluster Configuration
---------------------
[ndbd(NDB)] 2 node(s)
id=2 @192.168.1.21 (Version: 5.1.44, Nodegroup: 0)
id=3 @192.168.1.22 (Version: 5.1.44, Nodegroup: 0, Master)
[ndb_mgmd(MGM)] 1 node(s)
id=1 @192.168.1.20 (Version: 5.1.44)
[mysqld(API)] 3 node(s)
id=4 @192.168.1.21 (Version: 5.1.44)
id=5 @192.168.1.22 (Version: 5.1.44)
id=6 @192.168.1.23 (Version: 5.1.44)
好了,一切正常了,现在回到 mysql 节点上 创建和删除数据看是否同步。
那么就登录 DB2 的 mysql
DB2 # > /usr/local/mysql/bin/mysql -uroot -p
mysql > show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
+--------------------+
2 rows in set (0.00 sec)
mysql > create database wzzn;
Query OK, 1 row affected (0.39 sec)
mysql > show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| wzzn |
| mysql |
+--------------------+
3 rows in set (0.01 sec)
好了,在看 DB3 DB4 上是否同步
DB3 # > /usr/local/mysql/bin/mysql -uroot -p
mysql > show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| wzzn |
| mysql |
+--------------------+
2 rows in set (0.00 sec)
DB4 # > /usr/local/mysql/bin/mysql -uroot -p
mysql > show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| wzzn |
| mysql |
+--------------------+
2 rows in set (0.00 sec)
都看到了 wzzn 数据库 安装配置完成。
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