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Mysql-cluster环境配置

Jun 01, 2016 pm 01:13 PM
operating systemhardwaresoftware

Mysql-cluster环境配置

硬件环境

4台机器

192.168.1.10       管理节点

192.168.1.11           存储节点 SQL节点

192.168.1.12           存储节点、SQL节点

192.168.1.13      SQL节点

软件环境:

操作系统:CentOS 6 .5(64位)

Mysql版本:MySQL-Cluster-gpl-7.3.5-1.el6.x86_64.rpm-bundle.tar

mysql-cluster-gpl-7.3.5-linux-glibc2.5-x86_64.tar.gz(需要其中的两个文件)

安装准备:

1. 解压MySQL-Cluster-gpl-7.3.5-1.el6.x86_64.rpm-bundle.tar:

  将解压后的MySQL-Cluster-server-gpl-7.3.5-1.el6.x86_64.rpm分发至每台机器;

  将解压后的MySQL-Cluster-client-gpl-7.3.5-1.el6.x86_64.rpm分发至SQL节点;

2. 清理旧的Mysql安装:

  yum -y remove mysql

  rpm -qa | grep mysql*

  对于找到的1个剩余mysql包,请按照如下的命令格式予以删除:
  rpm -e --nodeps mysql-libs-5.1.61-4.el6.x86_64

3. 安装依赖库:

  yum -y install libaio

安装MySQL Cluster:

 创建文件夹(分如下3个类来创建对应的文件夹)
   存储节点:mkdir /var/lib/mysql/data 
   管理节点:mkdir /var/lib/mysql-cluster     SQL节点:可不用  文件夹授权
   进程DIR:    mkdir /var/run/mysqld              
  
  使用如下的命令来变更权限保证可写入:
   chmod -R 1777 /var/lib/mysql
   chmod -R 1777 /var/run/mysqld
   chmod -R 1777 /var/lib/mysql-cluster

1. 在每台机器上安装MySQL-Cluster-server-gpl-7.3.5-1.el6.x86_64.rpm

执行命令:rpm -Uvh MySQL-Cluster-server-gpl-7.3.5-1.el6.x86_64.rpm

安装后会提示默认密码存放在/root/.mysql_secret文件中(也有时候不提示)

2. 在SQL节点上安装MySQL-Cluster-client-gpl-7.3.5-1.el6.x86_64.rpm

执行命令:rpm -Uvh MySQL-Cluster-client-gpl-7.3.5-1.el6.x86_64.rpm

配置管理节点:

  1. 解压mysql-cluster-gpl-7.3.5-linux-glibc2.5-x86_64.tar.gz,进入其

mysql-cluster-gpl-7.3.5-linux-glibc2.5-x86_64/bin目录找到ndb_mgm和ndb_mgmd,将其复制到管理节点的/usr/local/bin,

然后使这两个文件成为可执行的:

cd /usr/local/bin

          chmod +x ndb_mgm*

  1. 在管理节点上执行:

cd /var/lib/mysql-cluster

vi config.ini

内容如下:

[ndbd default]

 NoOfReplicas=2

 DataMemory=80M

IndexMemory=20M

[ndb_mgmd]

# Management process options:

hostname=192.168.1.10           # Hostname or IP address of MGM node

datadir=/var/lib/mysql-cluster  # Directory for MGM node log files

[ndbd]

HostName=192.168.1.11

DataDir=/var/lib/mysql/data

[ndbd]

HostName=192.168.1.12

DataDir=/var/lib/mysql/data

[mysqld]

HostName=192.168.1.11

[mysqld]

HostName=192.168.1.12

[mysqld]

HostName=192.168.1.13

                       

配置存储节点和SQL节点:

在所有存储节点和SQL节点上建立配置文件:

vi /etc/my.cnf

内容如下:

[client]

 socket=/var/lib/mysql/mysql.sock

[mysqld]

 max_connections=100

 datadir=/var/lib/mysql

 socket=/var/lib/mysql/mysql.sock

 ndbcluster

 ndb-connectstring=192.168.1.10

[mysqld_safe]

log-error=/var/log/mysqld.log

pid-file=/var/run/mysqld/mysqld.pid

[mysql_cluster]

 ndb-connectstring=192.168.1.10

~

启动各个节点:

注意顺序。

  1. 启动管理节点:ndb_mgmd -f /var/lib/mysql-cluster/config.ini

(需要在管理节点执行,这会创建一个目录/usr/local/mysql/mysql-cluster,没有的话可能报错,就自己手动创建一个

mkdir  /usr/local/mysql

mkdir  /usr/local/mysql/mysql-cluster)

2. 启动存储节点:ndbd --initial

  (需要在存储节点执行) 初次启动时需要加--initial参数,以后只需要执行ndbd即可;

3. 启动SQL节点:nohup mysqld_safe --explicit_defaults_for_timestamp &

(需要在SQL节点执行)

启动之前,需要先检查其3306端口是否被占用,sudo netstat -anp | grep 3306 查看3306端口是否被占用

如果被占用需要kill掉,然后再启动

检查所有节点是否正常启动:

在管理节点中执行ndb_mgm 进入集群管理console,使用show命令列出所有节点信息:

可以看到sql节点没有启动成功,解决方法:

         cd  /var/lib/mysql

         ls 

         rm -f ib*   (删除掉lb开头的文件)

用命令:sudo netstat -anp | grep 3306 查看3306端口是否被占用

如果被占用kill杀掉

然后重新启动执行上面操作看到

常用命令:

1)         ndb_mgmd管理命令:ndb_mgm

执行之后就是管理控制台了,里面可以继续输入命令。

查看集群里面的全部节点的状态:show

2)         停止集群服务器的命令:ndb_mgm -e shutdown

如果集群配置有更新了:rm  /usr/mysql-cluster/ndb_1_config.bin.1

3)         停止SQL节点的命令:mysqladmin -uroot shutdown

4)         SQL Node上连接MySQL:mysql -u root –pPASSWORD

执行之后就是MySQL控制台了,里面可以继续输入命令。

修改root用户密码:

在每个SQL节点中执行:

mysqladmin -u root -pOLDPASSWORD password 'newpassword'

其中OLDPASSWORD为/root/.mysql_secret中生成的:

cat /root/.mysql_secret  (查看随机生成的密码)

# The random password set for the root user at Tue Apr 15 11:08:59 2014 (local time): Nnqn0u1MRcpXkMue

测试集群:

在192.168.1.12上登录

mysql -u root –ppassword

mysql> create database transenly;

Query OK, 1 row affected (0.06 sec)

mysql> use transenly;

Database changed

mysql>  CREATE TABLE ctest2 (i INT) ENGINE=NDB;(创建表的时候必须加上后面的ENGINE=NDB,不然数据同步不成功)

Query OK, 0 rows affected (0.38 sec)

在192.168.1.11上登录

mysql -u root –ppassword

可以看到数据库和数据表都有了,说明数据同步成功

数据导入使用sql文件导入

将sql文件放入到本地的一个地方,如/var/lib/mysql/data/

其中需要将sql文件中 ENGINE= InnoDB修改为ENGINE-NDB,保证数据同步的

在其中随意一个sql节点登录

mysql -u root –ppassword

use transenly;(使用的数据库,前提是先创建好数据库)

source /var/lib/mysql/data/transenly.sql

出现Query OK, 0 rows affected (0.00 sec)说明导入成功

然后show tables;查看三个sql节点是否都创建成功

项目连不上数据库:

需要修改权限,是服务器可以随便访问

mysql> grant all privileges on *.* to root@'%' identified by 'mysql' with grant option;

 //赋予任何主机访问数据的权限

3、mysql>FLUSH   PRIVILEGES //修改生效

4、mysql>EXIT //退出MySQL服务器

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