迷途多机配置

Question

我正在尝试使用Ansible作为供给器在Vagrant中创建多台机器环境。

我的Vagrantfile文件如下所示：

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

    config.vm.provision "ansible" do |ansible|
       ansible.limit = "all"
       ansible.playbook = "main.yml"
       ansible.inventory_path = "staging"
       ansible.verbose = "-vvvv"
     end

    config.vm.define "machine1" do |machine1| 
        machine1.vm.box = "ubuntu/trusty64"
        machine1.vm.network "private_network", ip:"192.168.77.10"
        machine1.vm.hostname = "machine1"
        machine1.vm.provider :virtualbox do |vb|
           vb.name = "machine1"
        end
    end    

    config.vm.define "machine2" do |machine2| 
        machine2.vm.box = "ubuntu/trusty64"
        machine2.vm.network "private_network", ip:"192.168.77.11"
        machine2.vm.hostname = "machine2"
        machine2.vm.provider :virtualbox do |vb|
            vb.name = "machine2"
        end
    end    

    config.vm.define "machine3" do |machine3| 
        machine3.vm.box = "ubuntu/trusty64"
        machine3.vm.network "private_network", ip:"192.168.77.12"
        machine3.vm.hostname = "machine3"
        machine3.vm.provider :virtualbox do |vb|
           vb.name = "machine3"
        end
    end      
end

盘存：

[AppServers]
192.168.77.10
192.168.77.11
192.168.77.12

[WebServers]
192.168.77.11
192.168.77.12

[WebLoadBalancers]
192.168.77.10

[SlaveDbServers]
192.168.77.10
192.168.77.12

[MasterDbServers]
192.168.77.11

[DbLoadBalancers]
192.168.77.11

main.yml：

- hosts: all
  roles:
  - Common
  - ConsulServer
  - ConsulAgent  

- hosts: WebServers
  roles:
  - WebServer

- hosts: WebLoadBalancers
  roles:
  - LoadBalancer

- hosts: MasterDbServers
  roles:
  - DbServer

我想买三台机器。它们都必须包含通用的软件(领事服务器和代理、vim等)。每台机器都有一些额外的设备。但是，一旦我只运行第一台创建的"vagrant up"，供应程序就会运行，因为其他2台没有创建，所以就会失败。在创建了所有机器之后运行提供程序是否可能？或者我的方法是不正确的，我应该用另一种方式来做这件事？谢谢您抽时间见我。

Answer 1

我遇到的第一个问题是ERROR: cannot find role in...。我假设你有这些角色，为了简洁而把它们排除在外。我在这里的建议是，在测试时要有一个简单的Ansible游戏手册：

---
- hosts: all
  gather_facts: false
  tasks:
  - command: hostname -f

其次，手头的问题围绕着静态库存文件的使用和其中的注意事项。您正在看到一个错误，因为Ansible provisioner在第一台计算机启动后运行时未能找到所有主机，而其他主机却没有。

最后，每台机器将有一个不同的键，您必须传递。因此，在Vagrant的记录的方法中，使用Ansible和这个工作-的帮助实现多机并行，下面是我推荐的Vagrantfile如下所示：

Vagrant.configure("2") do |config|
  N = 3

  VAGRANT_VM_PROVIDER = "virtualbox"
  ANSIBLE_RAW_SSH_ARGS = []

  (1..N-1).each do |machine_id|
    ANSIBLE_RAW_SSH_ARGS << "-o IdentityFile=.vagrant/machines/machine#{machine_id}/#{VAGRANT_VM_PROVIDER}/private_key"
  end

  (1..N).each do |machine_id|
    config.vm.define "machine#{machine_id}" do |machine|
      machine.vm.box = "ubuntu/trusty64"
      machine.vm.hostname = "machine#{machine_id}"
      machine.vm.network "private_network", ip: "192.168.77.#{10+machine_id-1}"

      # Only execute once the Ansible provisioner,
      # when all the machines are up and ready.
      if machine_id == N
        machine.vm.provision :ansible do |ansible|
          # Disable default limit to connect to all the machines
          ansible.limit = "all"
          ansible.playbook = "main.yml"
          ansible.inventory_path = "staging"
          ansible.verbose = "-v"
          ansible.raw_ssh_args = ANSIBLE_RAW_SSH_ARGS
        end
      end
    end
  end
end