我想在Vagrant VM中运行一个运行Redis的Docker容器。我希望事情变得尽可能简单，因此配置最少。
一些研究表明：
因此设置应该非常简单，我希望只需连接点。所以我想出了这个Vagrantfile：
VAGRANTFILE_API_VERSION = "2"
Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
config.vm.box = "chef/centos-6.5"
config.vm.provision "docker" do |docker|
docker.run "dockerfile/redis"
end
end
看起来很简单 - 很好。现在当我运行vagrant up时，我希望：
dockerd已启动。dockerfile/redis的Docker容器。除了第3步之外，所有似乎都有效，因为我得到了这个Vagrantfile：
==> default: Verifying vmnet devices are healthy...
==> default: Preparing network adapters...
==> default: Starting the VMware VM...
==> default: Waiting for machine to boot. This may take a few minutes...
default: SSH address: 192.168.249.190:22
default: SSH username: vagrant
default: SSH auth method: private key
default: Warning: Connection refused. Retrying...
==> default: Machine booted and ready!
==> default: Forwarding ports...
default: -- 22 => 2222
==> default: Configuring network adapters within the VM...
==> default: Waiting for HGFS kernel module to load...
==> default: Enabling and configuring shared folders...
default: -- /Users/ernst/nikon/nikon-elk-vm2: /vagrant
==> default: Running provisioner: docker...
default: Installing Docker (latest) onto machine...
default: Configuring Docker to autostart containers...
==> default: Starting Docker containers...
==> default: -- Container: dockerfile/redis
The following SSH command responded with a non-zero exit status.
Vagrant assumes that this means the command failed!
rm -f /var/lib/vagrant/cids/cc3cfcdebad9167099d85261c6311a0011838655
docker run --cidfile=/var/lib/vagrant/cids/cc3cfcdebad9167099d85261c6311a0011838655 -d --name dockerfile-redis dockerfile/redis
Stdout from the command:
Stderr from the command:
2014/11/26 12:38:40 Cannot connect to the Docker daemon. Is 'docker -d' running on this host?
我显然可以恢复使用shell配置程序，但我希望保持Vagrantfile简单，并使用Vagrant提供的docker配置程序。
那么我错过了什么？
答案 0 :(得分：2)
我认为你混淆了提供者和供应者。 Provisioner提供了配置VM的环境。对于Docker而言，这意味着您可以将容器添加到docker-host，以便以某种方式“配置”VM。其他供应商是“壳牌”，“厨师”或“木偶”。提供程序是生成VM的工具，或者在这种情况下是容器。其他提供商例如是“VirtualBox”或“AWS”。
以下是一些可以帮助您入门的代码：
ENV['VAGRANT_DEFAULT_PROVIDER'] = 'docker'
Vagrant.configure(2) do |config|
config.vm.define "docker-host", autostart: false do |host|
host.vm.hostname = "docker-host"
host.vm.box = "chef/centos-6.6"
# The following line terminates all ssh connections. Therefore
# Vagrant will be forced to reconnect.
# That's a workaround to have the docker command in the PATH
host.vm.provision "shell", inline: "ps aux | grep 'sshd:' | awk '{print $2}' | xargs kill"
host.vm.provision "docker"
end
host.vm.define 'container', primary: true do |ws|
ws.vm.hostname = 'container'
ws.vm.provider "docker" do |d|
d.image = "library/redis:latest"
d.vagrant_machine = "dev-host"
d.vagrant_vagrantfile = "./Vagrantfile"
d.force_host_vm = true
end
end
end
<强>输出：
$ vagrant up container
Bringing machine 'container' up with 'docker' provider...
==> container: Docker host is required. One will be created if necessary...
container: Vagrant will now create or start a local VM to act as the Docker
container: host. You'll see the output of the `vagrant up` for this VM below.
container:
container: Importing base box 'chef/centos-6.6'...
container: Matching MAC address for NAT networking...
container: Checking if box 'chef/centos-6.6' is up to date...
container: Setting the name of the VM: dev-host
container: Clearing any previously set network interfaces...
container: Preparing network interfaces based on configuration...
container: Adapter 1: nat
container: Forwarding ports...
container: 22 => 2222 (adapter 1)
container: Running 'pre-boot' VM customizations...
container: Booting VM...
container: Waiting for machine to boot. This may take a few minutes...
container: SSH address: 127.0.0.1:2222
container: SSH username: vagrant
container: SSH auth method: private key
container: Warning: Connection timeout. Retrying...
container: Warning: Connection timeout. Retrying...
container: Warning: Remote connection disconnect. Retrying...
container: Warning: Remote connection disconnect. Retrying...
container: Warning: Remote connection disconnect. Retrying...
container: Warning: Remote connection disconnect. Retrying...
container: Warning: Remote connection disconnect. Retrying...
container: Warning: Remote connection disconnect. Retrying...
container: Warning: Remote connection disconnect. Retrying...
container: Warning: Remote connection disconnect. Retrying...
container: Machine booted and ready!
container: Checking for guest additions in VM...
container: Setting hostname...
container: Mounting shared folders...
container: /vagrant => <PATH>
container: /tmp/vagrant-cache => <PATH>
container: Configuring cache buckets...
container: Running provisioner: docker...
container: Installing Docker (latest) onto machine...
container: Configuring Docker to autostart containers...
container: Configuring cache buckets...
container: Running provisioner: shell...
container: Running: inline script
container: Configuring cache buckets...
==> container: Syncing folders to the host VM...
container: Mounting shared folders...
container: /var/lib/docker/docker_1417023698_82709 => <PATH>
==> container: Warning: When using a remote Docker host, forwarded ports will NOT be
==> container: immediately available on your machine. They will still be forwarded on
==> container: the remote machine, however, so if you have a way to access the remote
==> container: machine, then you should be able to access those ports there. This is
==> container: not an error, it is only an informational message.
==> container: Creating the container...
container: Name: virtual-dev_container_1417023701
container: Image: library/redis:latest
container: Volume: /var/lib/docker/docker_1417023698_82709:/vagrant
container:
container: Container created: 2f020d26797f3bd0
==> container: Starting container...
==> container: Provisioners will not be run since container doesn't support SSH.
<强>用法：
使用vagrant up启动redis容器。由于我们强制容器的主机，如果它不可用，vagrant会自动启动它。您可以使用vagrant up docker-host --provider=virtualbox直接启动主机。一切开始后，您可以使用vagrant ssh docker-host进入docker-host。请注意，大多数Docker容器没有SSH，因此您无法使用vagrant ssh container来ssh它们。只要容器正在运行，您可以使用以下“技巧”来查看容器：
docker ps复制容器的ID docker exec -it <ID-of-container> /bin/bash 附加说明：
ENV['VAGRANT_DEFAULT_PROVIDER'] - 'docker' - 设置默认的提供者。对于Docker，您不必键入vagrant up --provider=docker。默认值为virtualbox。
d.vagrant_vagrantfile = "./Vagrantfile" - 设置泊坞主机的Vagrant文件的位置。因此，您可以为每个容器拥有自己的Vagrantfile！无论如何，这个例子使用多机器结构[1]。
您可以将docker-host或container添加到您的命令中。例如vagrant up docker-host --provider=virtualbox
进一步阅读：
答案 1 :(得分：2)
你的Vagrantfile是正确的。
这似乎是chef/centos-6.5框的问题。
在此框中，您必须先更新device-mapper-libs。
我在这个Vagrantfile上取得了成功：
VAGRANTFILE_API_VERSION = "2"
Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
config.vm.box = "chef/centos-6.5"
config.vm.provision "shell",
inline: "yum update -y device-mapper-libs"
config.vm.provision "docker" do |docker|
docker.run "redis"
end
end
VM内部：
[vagrant@localhost ~]$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
7d55185f859c redis:2 "/entrypoint.sh redi 10 seconds ago Up 9 seconds 6379/tcp redis