【mysql】ubuntu搭建mysql集群 mysql-cluster

1. 环境说明：

三台ubuntu18.04 ，分别为

• manage
• node1
• node2

2. manage 安装和配置Cluster Manager

• 二进制安装mysql-cluster-manage
  • cd /usr/local/src
  • wget https://dev.mysql.com/get/Downloads/MySQL-Cluster-8.0/mysql-cluster-community-management-server_8.0.19-1ubuntu18.04_amd64.deb
  • dpkg -i mysql-cluster-community-nodejs_8.0.19-1ubuntu18.04_amd64.deb
• 创建配置文件
  • mkdir /var/lib/mysql-cluster
  • vim /var/lib/mysql-cluster/config.ini

    [ndbd default] # 配置ndbd节点
    # Options affecting ndbd processes on all data nodes:
    NoOfReplicas=2  # Number of replicas
    [ndb_mgmd] # 配置管理节点
    # Management process options:
    hostname=198.51.100.2 # Hostname of the manager
    datadir=/var/lib/mysql-cluster  # Directory for the log files
    [ndbd] # 配置数据节点
    hostname=198.51.100.0 # Hostname/IP of the first data node
    NodeId=2            # Node ID for this data node
    datadir=/usr/local/mysql/data   # Remote directory for the data files
    [ndbd]
    hostname=198.51.100.1 # Hostname/IP of the second data node
    NodeId=3            # Node ID for this data node
    datadir=/usr/local/mysql/data   # Remote directory for the data files
    [mysqld] # 配置sql节点
    hostname=198.51.100.0# In our case the MySQL server/client is on the same Droplet as the cluster manager
    NodeId=4
    [mysqld]
    # SQL node options:
    hostname=198.51.100.1 # In our case the MySQL server/client is on the same Droplet as the cluster manager
    NodeId=5
    [mysqld]
    # SQL node options:
    hostname=198.51.100.2 # In our case the MySQL server/client is on the same Droplet as the cluster manager
    NodeId=6
    

• 启动测试：ndb_mgmd -f /var/lib/mysql-cluster/config.ini
• 设置防火墙允许其它节点传入连接
  • ufw allow from 10.66.1.125
  • ufw allow from 10.66.1.124
• system管理ndb_mgmd
  • 杀死ndbd进程：pkill -f ndb_mgmd
  • 创建管理文件：vim /etc/systemd/system/ndb_mgmd.service

    [Unit]
    Description=MySQL NDB Cluster Management Server
    After=network.target auditd.service
    [Service]
    Type=forking
    ExecStart=/usr/sbin/ndb_mgmd -f /var/lib/mysql-cluster/config.ini
    ExecReload=/bin/kill -HUP $MAINPID
    KillMode=process
    Restart=on-failure
    [Install]
    WantedBy=multi-user.target
    

  • 重载system配置：systemctl daemon-reload
  • 开启自启动：systemctl enable ndb_mgmd
  • 启动：systemctl start ndb_mgmd
  • 查看状态：systemctl status ndb_mgmd

3. node1 & node2 安装和配置数据节点

• 二进制安装mysql-cluster-data
  • cd /usr/local/src
  • wget https://dev.mysql.com/get/Downloads/MySQL-Cluster-8.0/mysql-cluster-community-data-node_8.0.19-1ubuntu18.04_amd64.deb
  • 安装依赖：apt install libclass-methodmaker-perl
  • dpkg -i mysql-cluster-community-data-node_8.0.19-1ubuntu18.04_amd64.deb
• 创建配置文件 vim /etc/my.cnf
  • 新增如下代码

    [mysql_cluster]
    # Options for NDB Cluster processes:
    ndb-connectstring=10.66.1.122  # location of cluster manager
    

• 创建data目录：mkdir -p /usr/local/mysql/data
• 启动测试：ndbd
• 设置防火墙允许其它节点传入连接
  • ufw allow from 10.66.1.122
  • ufw allow from 10.66.1.124
• system管理ndbd
  • 杀死ndbd进程：pkill -f ndbd
  • vim /etc/systemd/system/ndbd.service

    [Unit]
    Description=MySQL NDB Data Node Daemon
    After=network.target auditd.service
    [Service]
    Type=forking
    ExecStart=/usr/sbin/ndbd
    ExecReload=/bin/kill -HUP $MAINPID
    KillMode=process
    Restart=on-failure
    [Install]
    WantedBy=multi-user.target
    

  • systemctl daemon-reload
  • systemctl enable ndbd
  • systemctl start ndbd
  • systemctl status ndbd
• node2:复制node1 记得改好ip

4. manage & node1 & node2 配置sql节点（MySQL服务器和客户端）

• 安装
  • wget https://dev.mysql.com/get/Downloads/MySQL-Cluster-8.0/mysql-cluster_8.0.19-1ubuntu18.04_amd64.deb-bundle.tar
  • 解压到文件夹中
    • mkdir install
    • tar -xvf mysql-cluster_8.0.19-1ubuntu18.04_amd64.deb-bundle.tar -C install/
  • 安装
    • cd install
    • apt install libaio1 libmecab2
    • dpkg -i mysql-common_8.0.19-1ubuntu18.04_amd64.deb
    • dpkg -i mysql-cluster-community-client-core_8.0.19-1ubuntu18.04_amd64.deb
    • dpkg -i mysql-cluster-community-client_8.0.19-1ubuntu18.04_amd64.deb
    • dpkg -i mysql-client_8.0.19-1ubuntu18.04_amd64.deb
    • dpkg -i mysql-cluster-community-server-core_8.0.19-1ubuntu18.04_amd64.deb
    • dpkg -i mysql-cluster-community-server_8.0.19-1ubuntu18.04_amd64.deb
  • 修改配置文件 vim /etc/mysql/my.cnf
    • manage

      [mysqld]
      # Options for mysqld process:
      ndbcluster                      # run NDB storage engine
      [mysql_cluster]
      # Options for NDB Cluster processes:
      ndb-connectstring=10.66.1.122  # location of management server
      

    • node

      [mysql_cluster]
      # Options for NDB Cluster processes:
      ndb-connectstring=10.66.1.122  # location of management server
      

    • systemctl enable mysql
    • systemctl restart mysql

5. 验证mysql集群安装：登陆到manage

• mysql -uroot -p
  • 查看NDB集群引擎信息：show engine NDB status \G
    • number_of_ready_data_nodes：检测节点
      • 可以尝试关闭其中一个数据节点，节点重新
• ndb_mgm
  • 查看整体：show
  • 查看id所对应的节点状态：id status
  • 退出 quit