虚拟机ubuntu9.04下mysql集群的配置方法

介绍网络环境:

一、测试环境:
Server1: ndbd 192.168.245.11
Server2: ndbd 192.168.245.12
Server3: mysqld –ndb-cluster 192.168.245.13
ndbd: 数据库节点。
mysqld –ndb-cluster: MySQL服务器节点,程序直接访问的是这台机器的IP。默认端口仍是3306。
ndbd_mgm ndbd_mgmd:管理节点。管理/查看各库节点和服务器节点的状态。

二、集群方案
1.管理节点:server3(192.168.245.13)
2.存储节点:server1(192.168.245.11),server2(192.168.245.12)
3.SQL节点:server1(192.168.245.11),server2(192.168.245.12),server3(192.168.245.13)

三、mysql安装和配置

1.安装,sudo apt-get install mysql-server

2.配置这三台服务器上配置my.cnf,这三台服务器都要配置
vim /etc/mysql/my.cnf
—————————————–my.cnf开始——————————————–
ubuntu@ubuntu:~$ cat /etc/mysql/my.cnf
#
# The MySQL database server configuration file.
#
# You can copy this to one of:
# – “/etc/mysql/my.cnf” to set global options,
# – “~/.my.cnf” to set user-specific options.
#
# One can use all long options that the program supports.
# Run program with –help to get a list of available options and with
# –print-defaults to see which it would actually understand and use.
#
# For explanations see
http://dev.mysql.com/doc/mysql/en/serve … ables.html

# This will be passed to all mysql clients
# It has been reported that passwords should be enclosed with ticks/quotes
# escpecially if they contain “#” chars…
# Remember to edit /etc/mysql/debian.cnf when changing the socket location.
[client]
port = 3306
socket = /var/run/mysqld/mysqld.sock

# Here is entries for some specific programs
# The following values assume you have at least 32M ram

# This was formally known as [safe_mysqld]. Both versions are currently parsed.
[mysqld_safe]
socket = /var/run/mysqld/mysqld.sock
nice = 0

[mysqld]
#
# * Basic Settings
#

#
# * IMPORTANT
# If you make changes to these settings and your system uses apparmor, you may
# also need to also adjust /etc/apparmor.d/usr.sbin.mysqld.
#

user = mysql
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
port = 3306
basedir = /usr
datadir = /var/lib/mysql
tmpdir = /tmp
language = /usr/share/mysql/english
skip-external-locking
#
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
# bind-address = 127.0.0.1
#
# * Fine Tuning
#
key_buffer = 16M
max_allowed_packet = 16M
thread_stack = 128K
thread_cache_size = 8
#max_connections = 100
#table_cache = 64
#thread_concurrency = 10
#
# * Query Cache Configuration
#
query_cache_limit = 1M
query_cache_size = 16M
#
# * Logging and Replication
#
# Both location gets rotated by the cronjob.
# Be aware that this log type is a performance killer.
#log = /var/log/mysql/mysql.log
#
# Error logging goes to syslog. This is a Debian improvement :)
#
# Here you can see queries with especially long duration
#log_slow_queries = /var/log/mysql/mysql-slow.log
#long_query_time = 2
#log-queries-not-using-indexes
#
# The following can be used as easy to replay backup logs or for replication.
# note: if you are setting up a replication slave, see README.Debian about
# other settings you may need to change.
#server-id = 1
#log_bin = /var/log/mysql/mysql-bin.log
expire_logs_days = 10
max_binlog_size = 100M
#binlog_do_db = include_database_name
#binlog_ignore_db = include_database_name
#
# * BerkeleyDB
#
# Using BerkeleyDB is now discouraged as its support will cease in 5.1.12.
skip-bdb
#
# * MyISAM
#
# MyISAM is enabled by default with a 10MB datafile in /var/lib/mysql/.
# Read the manual for more MyISAM related options. There are many!
# You might want to disable MyISAM to shrink the mysqld process by circa 100MB.
#skip-innodb
#
# * Security Features
#
# Read the manual, too, if you want chroot!
# chroot = /var/lib/mysql/
#
# For generating SSL certificates I recommend the OpenSSL GUI “tinyca”.
#
# ssl-ca=/etc/mysql/cacert.pem
# ssl-cert=/etc/mysql/server-cert.pem
# ssl-key=/etc/mysql/server-key.pem

ndbcluster
ndb-connectstring=192.168.245.13

[mysqldump]
quick
quote-names
max_allowed_packet = 16M

[mysql]
#no-auto-rehash # faster start of mysql but no tab completition

[isamchk]
key_buffer = 16M

#
# * NDB Cluster
#
# See /usr/share/doc/mysql-server-*/README.Debian for more information.
#
# The following configuration is read by the NDB Data Nodes (ndbd processes)
# not from the NDB Management Nodes (ndb_mgmd processes).
#
[MYSQL_CLUSTER]

ndb-connectstring=192.168.245.13

#
# * IMPORTANT: Additional settings that can override those from this file!
# The files must end with ‘.cnf’, otherwise they’ll be ignored.
#
!includedir /etc/mysql/conf.d/

ubuntu@ubuntu:~$
———————————my.cnf结束———————————————————

主要在:[mysqld]下添加:

ndbcluster
ndb-connectstring=192.168.245.13
和添加
[MYSQL_CLUSTER]

ndb-connectstring=192.168.245.13

上面三台服务器都要一样

2.配置ndb_mgmd.cnf(192.168.245.13服务器上配置)
复制/usr/share/doc/mysql-server-5.0/examples/ndb_mgmd.cnf到/etc/mysql/ndb_mgmd.cnf

编辑ndb_mgmd.cnf
——————-开始————

ubuntu@ubuntu:~$ cat /etc/mysql/ndb_mgmd.cnf
[NDBD DEFAULT]
NoOfReplicas=2
DataMemory=10MB
IndexMemory=25MB
MaxNoOfTables=256
MaxNoOfOrderedIndexes=256
MaxNoOfUniqueHashIndexes=128

[MYSQLD DEFAULT]

[NDB_MGMD DEFAULT]

[TCP DEFAULT]

[NDB_MGMD]
Id=1 # the NDB Management Node (this one)
HostName=192.168.245.13
DataDir= /var/lib/mysql-cluster

[NDBD]
Id=2 # the first NDB Data Node
HostName=192.168.245.11
DataDir= /var/lib/mysql-cluster

[NDBD]
Id=3 # the second NDB Data Node
HostName=192.168.245.12
DataDir=/var/lib/mysql-cluster

[MYSQLD]
Id=4 # the first SQL node
HostName=192.168.245.13
[MYSQLD]
Id=5 # the first SQL node
HostName=192.168.245.11
[MYSQLD]
Id=6 # the first SQL node
HostName=192.168.245.12

ubuntu@ubuntu:~$

——————-结束————

先启动:
13服务器:

sudo /etc/init.d/mysql-ndb-mgm start

然后启动
11.12服务器

sudo /etc/init.d/mysql-ndb start

最后启动,13.11.12服务器mysql服务
sudo /etc/init.d/mysql start

测试:
13服务器上:
neo@mgm:~$ 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 @192.168.245.11 (Version: 5.0.51, Nodegroup: 0)
id=3 @192.168.245.12 (Version: 5.0.51, Nodegroup: 0, Master)

[ndb_mgmd(MGM)] 1 node(s)
id=1 @192.168.245.13 (Version: 5.0.51)

[mysqld(API)] 2 node(s)
id=4 @192.168.245.13 (Version: 5.0.51)
id=5 @192.168.245.11 (Version: 5.0.51)
id=5 @192.168.245.12 (Version: 5.0.51)

ndb_mgm>

与没有使用簇的MySQL相比,在MySQL簇内操作数据的方式没有太大的区别。

执行这类操作时应记住三点

1.

表必须用ENGINE=NDB或ENGINE=NDBCLUSTER选项创建,或用ALTER TABLE选项更改,以使用NDB Cluster存储引擎在 Cluster内复制它们。如果使用mysqldump的输出从已有数据库导

入表,可在文本编辑器中打开SQL脚本,并将该选项添加到任何表创建语句,或用这类选项之一替换任何已有的ENGINE(或TYPE)选项。
2.

另外还请记住,每个NDB表必须有一个主键。如果在创建表时用户未定义主键,NDB Cluster存储引擎将自动生成隐含的主键。(注释:该隐含 键也将占用空间,就像任何其他的表

索引一样。由于没有足够的内存来容纳这些自动创建的键,出现问题并不罕见)。
3.

当你在一个节点上运行create database mydb;你去其他sql node上执行show databases;将不能看到mydb,你需要创建它,然后use mydb; show tables;你将看到同步的表。

SQL Node 1

neo@sql:~$ mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 7
Server version: 5.0.51a-3ubuntu5.1 (Ubuntu)

Type ‘help;’ or ‘h’ for help. Type ‘c’ to clear the buffer.

mysql> create database cluster;
Query OK, 1 row affected (0.00 sec)

mysql> use cluster
Database changed
mysql> create table city( id mediumint unsigned not null auto_increment primary key, name varchar(20) not null default ” ) engine = ndbcluster default

charset utf8;
Query OK, 0 rows affected (1.07 sec)

mysql> insert into city values(1, ‘Shenzhen’);
Query OK, 1 row affected (0.12 sec)

mysql> insert into city values(2, ‘Guangdong’);
Query OK, 1 row affected (0.00 sec)

SQL Node 2

neo@sql:~$ mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 7
Server version: 5.0.51a-3ubuntu5.1 (Ubuntu)

Type ‘help;’ or ‘h’ for help. Type ‘c’ to clear the buffer.

mysql> show databases;
+——————–+
| Database |
+——————–+
| information_schema |
| example |
| mydb |
| mysql |
| neo |
+——————–+
6 rows in set (0.13 sec)

mysql> create database cluster;
Query OK, 1 row affected (0.00 sec)

mysql> show databases;
+——————–+
| Database |
+——————–+
| information_schema |
| cluster |
| example |
| mydb |
| mysql |
| neo |
+——————–+
6 rows in set (0.13 sec)

mysql> use cluster;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> show tables;
+——————-+
| Tables_in_cluster |
+——————-+
| city |
+——————-+
1 row in set (0.01 sec)

mysql> select * from city;
+—-+———–+
| id | name |
+—-+———–+
| 1 | Shenzhen |
| 2 | Guangdong |
+—-+———–+
2 rows in set (0.03 sec)

mysql>