基于Docker的Mysql Cluster集群
参考
使用Docker创建Cluster步骤
目标：一个管理节点，二个数据节点，二个mysqlserver节点
- Create a docker network
docker network create cluster — subnet=192.168.0.0/16
- 修改管理节点的集群配置文件
从https://github.com/mysql/mysql-docker/tree/mysql-cluster下载对应版本的mysql-cluster.cnf
在结尾新增如下配置, 目的是增加一个mysql server节点
[mysqld]
NodeId=5
hostname=192.168.0.11
- Create the manager node
-v 参数自行调整
docker run -d --net=cluster --name=management1 --ip=192.168.0.2 -v C:\docker\mysql\mysql-cluster.cnf:/etc/mysql-cluster.cnf mysql/mysql-cluster ndb_mgmd
- Create the data nodes
集群配置文件中需要创建两个数据节点, 按指定的hostname参数自行调整--ip参数
docker run -d --net=cluster --name=ndb1 --ip=192.168.0.3 mysql/mysql-cluster ndbd
docker run -d --net=cluster --name=ndb2 --ip=192.168.0.4 mysql/mysql-cluster ndbd
- Create the Mysql nodes
集群配置文件中需要创建两个mysql节点, 按指定的hostname参数自行调整--ip参数
docker run -d --net=cluster --name=mysql1 --ip=192.168.0.10 -e MYSQL_ROOT_PASSWORD=123 mysql/mysql-cluster mysqld
docker run -d --net=cluster --name=mysql2 --ip=192.168.0.11 -e MYSQL_ROOT_PASSWORD=123 mysql/mysql-cluster mysqld
- 在管理节点查看集群状态
docker run -it --net=cluster mysql/mysql-cluster ndb_mgm
运行show命令，打印集群状态
ndb_mgm> show
Cluster Configuration
---------------------
[ndbd(NDB)] 2 node(s)
id=2 @192.168.0.3 (mysql-5.7.27 ndb-7.6.11, Nodegroup: 0, *)
id=3 @192.168.0.4 (mysql-5.7.27 ndb-7.6.11, Nodegroup: 0)
[ndb_mgmd(MGM)] 1 node(s)
id=1 @192.168.0.2 (mysql-5.7.27 ndb-7.6.11)
[mysqld(API)] 2 node(s)
id=4 @192.168.0.10 (mysql-5.7.27 ndb-7.6.11)
id=5 @192.168.0.11 (mysql-5.7.27 ndb-7.6.11)
my.cnf
# Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
[mysqld]
ndbcluster
ndb-connectstring=192.168.0.2
user=mysql
[mysql_cluster]
ndb-connectstring=192.168.0.2
mysql-cluster.cnf
# Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
[ndbd default]
NoOfReplicas=2
DataMemory=80M
IndexMemory=18M
[ndb_mgmd]
NodeId=1
hostname=192.168.0.2
datadir=/var/lib/mysql
[ndbd]
NodeId=2
hostname=192.168.0.3
datadir=/var/lib/mysql
[ndbd]
NodeId=3
hostname=192.168.0.4
datadir=/var/lib/mysql
[mysqld]
NodeId=4
hostname=192.168.0.10
[mysqld]
NodeId=5
hostname=192.168.0.11
