vagrant + centos7创建3节点集群

坑

1. 设置节点的网络的时候，需要给一个属性name​，确保节点启动的时候，集群里面的节点会绑定到同一个网络平面：**node.vm.network "private_network", name: "VirtualBox Host-Only Enthernet Adapter"**​
2. 为了防止节点启动的时候，22端口被随机分配绑定宿主机端口，我们可以配置将其转发到一个固定的端口：node.vm.network "forwarded_port", guest: 22, host: "230#{i}"​，需要注意的是，需要先将原来的ssh转发端口禁用掉：node.vm.network "forwarded_port", guest: 22, host: 2222, id: "ssh", disabled: "true"​

配置文件：

# Vagrantfile
Vagrant.configure("2") do |config|

    # config.vm.network "private_network", auto_config: false

        (1..3).each do |i|

                config.vm.define "node#{i}" do |node|

                    # 设置虚拟机的Box
            node.vm.box = "generic/centos7"

            # 设置虚拟机的主机名
            node.vm.hostname="node#{i}"

            # 设置虚拟机的IP，绑定一个固定的网卡，确保
            node.vm.network "private_network", ip: "192.168.59.10#{i}", name: "VirtualBox Host-Only Ethernet Adapter"

            # 设置端口转发
            node.vm.network "forwarded_port", guest: 22, host: 2222, id: "ssh", disabled: "true"
            node.vm.network "forwarded_port", guest: 22, host: "230#{i}"
            node.vm.network "forwarded_port", guest: 2181, host: "218#{i}"

            # 设置主机与虚拟机的共享目录
            node.vm.synced_folder "D:/Vagrants/share", "/home/vagrant/share"

            # VirtaulBox相关配置
            node.vm.provider "virtualbox" do |v|

                # 设置虚拟机的名称
                v.name = "node#{i}"

                # 设置虚拟机的内存大小
                v.memory = 6144

                # 设置虚拟机的CPU个数
                v.cpus = 1
            end

                end
        end
end

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