昨晚学习了一下vagrant的用法，今天开始试着用vagrant来在本地虚拟化一个coreos的系统，等熟悉coreos的基本操作之后就可以把我现在vps的freebsd10换成coreos了。
按照官方的教程一步一步来。
git clone https://github.com/coreos/coreos-vagrant.git会在当前目录创建一个叫做coreos-vagrant的目录，里面包含coreos的基本配置以及vagrant的配置。-
更改配置。vagrant的配置文件就是
Vagrantfile，这是一个ruby的文件，里面定义了2个配置文件CLOUDCONFIGPATH = File.join(File.dirname(FILE), “user-data”) CONFIG = File.join(File.dirname(FILE), “config.rb”)
一个是当前目录下的user-data文件，一个是当前目录下的config.rb文件
VirtualBox is complaining that the kernel module is not loaded. Please run `VBoxManage --version` or open the VirtualBox GUI to see the error message which should contain instructions on how to fix this error.
根据Vagrantfile里面 提供的url下载系统的时候，可能是url被屏蔽了，所以需要使用点小手段proxychains vagrant up
但是等下载都完成之后却出现下面这段错误信息
Command: ["hostonlyif", "create"] Stderr: 0%... Progress state: NS_ERROR_FAILURE VBoxManage: error: Failed to create the host-only adapter VBoxManage: error: VBoxNetAdpCtl: Error while adding new interface: failed to open /dev/vboxnetctl: No such file or directory VBoxManage: error: Details: code NS_ERROR_FAILURE (0x80004005), component HostNetworkInterface, interface IHostNetworkInterface VBoxManage: error: Context: "int handleCreate(HandlerArg*, int, int*)" at line 66 of file VBoxManageHostonly.cpp
听起来是virtualbox的网卡驱动没有加载进来，在网上搜到一个很简单的方法，sudo vboxreload
virtualbox的驱动问题解决之后，还是执行proxychains vagrant up但是这回却报错了
Bringing machine 'core-01' up with 'virtualbox' provider...
Bringing machine 'core-02' up with 'virtualbox' provider...
Bringing machine 'core-03' up with 'virtualbox' provider...
==> core-01: Checking if box 'coreos-stable' is up to date...
==> core-01: Fixed port collision for 22 => 2222. Now on port 2250.
==> core-01: Clearing any previously set network interfaces...
==> core-01: Preparing network interfaces based on configuration...
core-01: Adapter 1: nat
core-01: Adapter 2: hostonly
==> core-01: Forwarding ports...
core-01: 22 => 2250 (adapter 1)
==> core-01: Running 'pre-boot' VM customizations...
==> core-01: Booting VM...
==> core-01: Waiting for machine to boot. This may take a few minutes...
core-01: SSH address: 127.0.0.1:2250
core-01: SSH username: core
core-01: SSH auth method: private key
core-01: Warning: Remote connection disconnect. Retrying...
core-01: Warning: Remote connection disconnect. Retrying...
翻墙之后127.0.0.1是vps的内部loop地址，不是本机的，所以怎么也ssh不上去，既然东西都下载完了那就不需要代理了，直接vagrant up就有了下面的信息，太好了，这是在自动装系统呢。
Bringing machine 'core-01' up with 'virtualbox' provider... Bringing machine 'core-02' up with 'virtualbox' provider... Bringing machine 'core-03' up with 'virtualbox' provider... ==> core-01: Checking if box 'coreos-stable' is up to date... ==> core-01: There was a problem while downloading the metadata for your box ==> core-01: to check for updates. This is not an error, since it is usually due ==> core-01: to temporary network problems. This is just a warning. The problem ==> core-01: encountered was: ==> core-01: ==> core-01: Failed to connect to 2404:6800:4008:c00::80: Network is unreachable ==> core-01: ==> core-01: If you want to check for box updates, verify your network connection ==> core-01: is valid and try again. ==> core-01: VirtualBox VM is already running. ==> core-02: Importing base box 'coreos-stable'... ==> core-02: Matching MAC address for NAT networking... ==> core-02: Checking if box 'coreos-stable' is up to date...
3台虚拟机全部安装ok，我有一个集群了，哈哈哈哈。查看一下集群的运行状态。
Current machine states: core-01 running (virtualbox) core-02 running (virtualbox) core-03 running (virtualbox) This environment represents multiple VMs. The VMs are all listed above with their current state. For more information about a specific VM, run `vagrant status NAME`.
查看一下virtualbox的运行状态，有3个进程分别运行着3个虚拟机。
joey 10033 1.1 0.2 163232 9492 ? Sl 22:33 0:08 /usr/lib/virtualbox/VBoxXPCOMIPCD joey 10040 2.6 0.4 707156 19324 ? Sl 22:33 0:20 /usr/lib/virtualbox/VBoxSVC --auto-shutdown joey 11184 3.8 1.9 1497696 74992 ? Sl 22:33 0:28 /usr/lib/virtualbox/VBoxHeadless --comment coreos-vagrant_core-01_1419632903871_39166 --startvm 29a5b99b-dfa8-48e6-b18f-d63b01696df2 --vrde config joey 11204 0.0 0.2 154828 9228 ? S 22:33 0:00 /usr/lib/virtualbox/VBoxNetDHCP --ip-address 192.168.56.100 --lower-ip 192.168.56.101 --mac-address 08:00:27:AA:0D:77 --netmask 255.255.255.0 --network HostInterfaceNetworking-vboxnet0 --trunk-name vboxnet0 --trunk-type netflt --upper-ip 192.168.56.254 joey 27124 10.2 1.9 1527828 76788 ? Sl 22:40 0:32 /usr/lib/virtualbox/VBoxHeadless --comment coreos-vagrant_core-02_1419633622663_70678 --startvm 07c05704-61e7-4e61-bebd-723978180348 --vrde config joey 28280 17.8 2.0 1523732 81576 ? Sl 22:43 0:28 /usr/lib/virtualbox/VBoxHeadless --comment coreos-vagrant_core-03_1419633784764_52573 --startvm f614df63-7556-45ac-a4ca-3654d6039d3d --vrde config joey 29297 0.0 0.0 12384 2400 pts/2 R+ 22:45 0:00 grep --color=auto -i virtualbox
再看一下我的VirtualBox VMs目录：
coreos-vagrant_core-01_1419632903871_39166/ coreos-vagrant_core-03_1419633784764_52573/ coreos-vagrant_core-02_1419633622663_70678/ Public_default_1419540157403_62624/
昨天还只有Public_default_1419540157403_62624/一个目录，今天就多了3个了，算上昨天的那个ubuntu12.04，我是不是有4个虚拟系统了？
进入到我的Vagrantfile所在的目录，执行vagrant ssh core-01，就登陆进我的第一个虚拟机了。
剩下的就是学习如何使用coreos在上面部署开发环境了，有vagrant这么方便的工具来管理虚拟机，我都不想去研究docker了，我这样一个菜鸟竟然也能管理4台机器，科技真是使人懒惰。