参考
- mysql-cluster镜像
- https://medium.com/@ahmedamedy/mysql-clustering-with-docker-611dc28b8db7
使用Docker创建Cluster步骤
实例目标：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my-cluster.cnf
在结尾新增如下配置, 目的是增加一个mysqlserver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