docker_practice/coreos/quickstart.md

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# CoreOS
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使 Vagrant
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*Vagrant 使*
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CoreOS CoreOS
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##
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Virtualbox, Vagrant git
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##
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CoreOS
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```bash
$ git clone https://github.com/coreos/coreos-vagrant
$ cd coreos-vagrant
$ cp user-data.sample user-data
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```
token
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```bash
$ curl https://discovery.etcd.io/new
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```
token user-data
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```yml
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#cloud-config
coreos:
etcd:
discovery: https://discovery.etcd.io/<token>
```
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##
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CoreOS Vagrantfile
config.rb.sample .
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```bash
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cp config.rb.sample config.rb
```
num_instances3
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```bash
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vagrant up
=>
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: Box 'coreos-alpha' could not be found. Attempting to find and install...
core-01: Box Provider: virtualbox
core-01: Box Version: >= 0
==> core-01: Adding box 'coreos-alpha' (v0) for provider: virtualbox
core-01: Downloading: http://storage.core-os.net/coreos/amd64-usr/alpha/coreos_production_vagrant.box
core-01: Progress: 46% (Rate: 6105k/s, Estimated time remaining: 0:00:16)
```
ssh
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```bash
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ssh-add ~/.vagrant.d/insecure_private_key
```
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```bash
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vagrant ssh core-01 -- -A
```