Terraform:安装卷 [英] Terraform: Mount volume

问题描述

根据文档，使用 terraform，我能够在数字海洋上创建一个水滴:

According to documentation, using terraform, I'm able to create a droplet on digital ocean:

resource "digitalocean_volume" "foobar" {
  region      = "nyc1"
  name        = "baz"
  size        = 100
  description = "an example volume"
}

所以，我也可以给它添加一个卷:

So, I'm also able to add a volume to it:

resource "digitalocean_droplet" "foobar" {
  name       = "baz"
  size       = "1gb"
  image      = "coreos-stable"
  region     = "nyc1"
  volume_ids = ["${digitalocean_volume.foobar.id}"]
}

我想知道如何将它安装在所需的位置.我需要自动安装它.我的意思是，当液滴上升时，我需要安装音量.我正在考虑使用厨师......

I'd like to know how to mount this on a desired location. I need to mount it automatically. I mean, when droplet is up I need to the volume is mounted. I was thinking about using chef...

有什么想法吗?

推荐答案

要自动挂载volume，可以通过cloud init使用user_data来运行脚本，如下:

To mount the volume automatically, you can use user_data via cloud init to run a script as follow:

这就是您的 digitalocean_droplet 资源应该反映的方式:

This is how your digitalocean_droplet resources should reflect:

resource "digitalocean_droplet" "foobar" {
  name       = "baz"
  size       = "1gb"
  image      = "coreos-stable"
  region     = "nyc1"
  volume_ids = ["${digitalocean_volume.foobar.id}"]
   # user data
  user_data = "${data.template_cloudinit_config.cloudinit-example.rendered}"
}

那么包含 cloudinit_config 的 cloud.init 文件应该如下所示.它将引用 ${TERRAFORM_HOME}/script/disk.sh 中的 shell 脚本，该脚本会自动挂载您的卷:

Then your cloud.init file that contains the cloudinit_config should be as bellow. It will reference the shell script in ${TERRAFORM_HOME}/script/disk.sh that would mount your volume automatically:

provider "cloudinit" {}


data "template_file" "shell-script" {
  template = "${file("scripts/disk.sh")}"

}
data "template_cloudinit_config" "cloudinit-example" {

  gzip = false
  base64_encode = false

  part {
    content_type = "text/x-shellscript"
    content      = "${data.template_file.shell-script.rendered}"
  }

}

启动时自动挂载卷的 shell 脚本位于 ${TERRAFORM_HOME}/script/disk.sh

The shell script to mount the volume automatically on startup is in ${TERRAFORM_HOME}/script/disk.sh

它将首先检查文件系统是否存在.如果为true，则不会格式化磁盘，否则会

It will first check if a file system exist. If true it wouldn't format the disk if not it will

#!/bin/bash


DEVICE_FS=`blkid -o value -s TYPE ${DEVICE}`
if [ "`echo -n $DEVICE_FS`" == "" ] ; then
        mkfs.ext4 ${DEVICE}
fi
mkdir -p /data
echo '${DEVICE} /data ext4 defaults 0 0' >> /etc/fstab
mount /data

希望对你有帮助

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