家在网上都能找到都是RedHat系统等等，对Ubuntu系统MySQL集群就没有介绍文章，我现在写写Ubuntu这个MySQL集群方法。新手不要骂我，呵呵。

　　介绍网络环境：

　　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 =  #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———————————————————