【完美】Mysql-cluster数据库集群搭建（linux）

Bertha 。 2022-06-03 05:52 246阅读 0赞

#  #

# [介绍][Link 1] #

# 《[Mysql-cluster数据库集群介绍][Link 1]》 #

# 安装 #

系统：Linux CentOS7.4

**查看是否安装mysql**

rpm -qa | grep mysql

**普通删除**

rpm -e mysql

**强力删除**

rpm -e --nodeps mysql

**通过wget安装**

wget https://dev.mysql.com/get/Downloads/MySQL-Cluster-7.5/mysql-cluster-gpl-7.5.8-linux-glibc2.12-x86\_64.tar.gz

（如果没有安装wget，执行yum -y install wget）

**解压**

tar xvf mysql-cluster-gpl-7.5.8-linux-glibc2.12-x86\_64.tar.gz

**新建文件夹**

（用于NDB）

mkdir /usr/local/mysql-cluster

mkdir /usr/local/mysql-cluster/logs

mkdir /usr/local/mysql-cluster/data

（用于Mysql）

mkdir /usr/local/mysql

mkdir /usr/local/mysql/data

mkdir /usr/local/mysql/data/mysql

一句话：

mkdir /usr/local/mysql-cluster /usr/local/mysql-cluster/logs /usr/local/mysql-cluster/data /usr/local/mysql /usr/local/mysql/data /usr/local/mysql/data/mysql

**复制程序**

cp  mysql-cluster-gpl-7.5.8-linux-glibc2.12-x86\_64/bin/ndb\_mgm\* /usr/local/mysql-cluster

cp  mysql-cluster-gpl-7.5.8-linux-glibc2.12-x86\_64/bin/ndbd /usr/local/mysql-cluster

cp -r mysql-cluster-gpl-7.5.8-linux-glibc2.12-x86\_64/. /usr/local/mysql

管理节点配置

**新建配置文件**

vi  /usr/local/mysql-cluster/config.ini

\------------------------------------------------------------------

\[ndbd default\]  
NoOfReplicas=1  
DataMemory=6144M  
IndexMemory=1024M

StopOnError=0

StringMemory=5M

MaxNoOfConcurrentTransactions=100000

MaxNoOfConcurrentOperations=110000

MaxNoOfLocalOperations=250000

MaxNoOfConcurrentIndexOperations=81920

MaxNoOfConcurrentScans=256

MaxNoOfLocalScans=1000

MaxNoOfOpenFiles=1000

MaxNoOfAttributes=10000

ODirect=1

MaxNoOfTables=20320

MaxNoOfOrderedIndexes=2048

MaxNoOfUniqueHashIndexes=2048  
  
\[ndb\_mgmd\]

NodeId=1  
HostName=192.168.1.1  
DataDir=/usr/local/mysql-cluster/logs  
  
\[ndbd\]  
NodeId=2

HostName=192.168.1.1  
DataDir=/usr/local/mysql-cluster/data  
  
\[mysqld\]

NodeId=3  
HostName=192.168.1.1  
  
\[ndbd\]

NodeId=4  
HostName=192.168.1.2  
DataDir=/usr/local/mysql-cluster/data  
  
\[mysqld\]

NodeId=5  
HostName=192.168.1.2

\[mysqld\]

\-------------------------------------------------------------------

开始编辑  insert键  
退出编辑  esc键  
保存退出  :wq  
强制退出  :q!

**数据节点配置**

touch /usr/local/mysql/error.log

touch /usr/local/mysql/mysql.pid

vi  /usr/local/mysql/support-files/my-default.cnf

\--------------------------------------------------------------------

\[mysqld\]  
basedir = /usr/local/mysql  
datadir = /usr/local/mysql/data/mysql

pid-file = /usr/local/mysql/mysql.pid

log-error = /usr/local/mysql/error.log

user = root

port = 3306

tmp\_table\_size = 256M  
max\_heap\_table\_size = 256M

ndbcluster  
ndb-connectstring=192.168.1.1  
  
\[mysql\_cluster\]  
ndb-connectstring=192.168.1.1  
  
\[ndbd\]  
ndb-connectstring=192.168.1.1

\[mysql\_safe\]

log-error = /usr/local/mysql/error.log

\--------------------------------------------------------------------

cp /usr/local/mysql/support-files/my-default.cnf /etc/my.cnf

## 启动 ##

管理节点

/usr/local/mysql-cluster/ndb\_mgmd --configdir=/usr/local/mysql-cluster -f /usr/local/mysql-cluster/config.ini --initial --reload

/usr/local/mysql-cluster/ndb\_mgm -e show    （查看和管理）

/usr/local/mysql-cluster/ndb\_mgm -e shutdown    （关闭集群）

/usr/local/mysql-cluster/ndb\_mgm -e exit   （退出）

数据节点

/usr/local/mysql-cluster/ndbd --initial

SQL节点

新增用户组mysql和用户msyql

groupadd mysql

useradd -g mysql mysql

\#（如果没有权限，可登录root去新增）

cd /usr/local/mysql

\#修改文件权限

chown -R mysql:mysql ./

\#初始化mysql

bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data/mysql

（如果data ..有数据则新建data和data/mysql）

出现以下信息则标示成功

\[Warning\] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: **82246b8e-e62b-11e7-b5ad-000c29aa8807**.  
\[Note\] A temporary password is generated for root@localhost:**hWuJyniWd3**,.

记下UUID和密码

\#复制mysql到服务自动启动里面  
cp support-files/mysql.server /etc/init.d/mysqld

\#修改权限为755 也就是root可以执行  
chmod 755 /etc/init.d/mysqld

\#复制配置文件到etc下，因为默认启动先去etc下加载配置文件  
cp support-files/my-default.cnf /etc/my.cnf

启动，重启，停止mysql服务

service mysqld start

service mysqld restart

service mysqld stop

查看mysql是否已启动

/etc/rc.d/init.d/mysqld status

## linux下mysql错误 ##

Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

[点击链接查看解决方案][Link 2]

\-------------------------------------------------------------

Your password has expired. To log in you must change it using a client that supports expired passwords

[点击链接查看解决方案][Link 3]

\-------------------------------------------------------------

Host is not allowed to connect to this MySQL server

[点击链接查看解决方案][Link 4]

\-------------------------------------------------------------

Unable to connect with connect string: nodeid=0,172.24.221.100:1186

[点击链接查看解决方案][Link 5]

\-------------------------------------------------------------

[Link 1]: http://blog.csdn.net/zq33312757/article/details/79091642
[Link 2]: http://blog.csdn.net/zq33312757/article/details/79091737
[Link 3]: http://blog.csdn.net/zq33312757/article/details/79092740
[Link 4]: http://blog.csdn.net/zq33312757/article/details/79297724
[Link 5]: https://blog.csdn.net/zq33312757/article/details/80731709