将EBS卷(不是快照)挂载到Elastic Beanstalk EC2 [英] Mount a EBS volume (not snapshot) to Elastic Beanstalk EC2

问题描述

我正在将旧版应用程序迁移到Elastic Beanstalk.它需要持久存储(暂时).我想挂载一个EBS卷.

I'm migrating a legacy app to Elastic Beanstalk. It needs persistent storage (for the time being). I want to mount a EBS volume.

我希望以下代码可以在 .ebextensions/ebs.config 中使用:

I was hoping the following would work in .ebextensions/ebs.config:

commands:
  01mkdir:
    command: "mkdir /data"
  02mount:
    command: "mount /dev/sdh /data"

option_settings:
  - namespace: aws:autoscaling:launchconfiguration
    option_name: BlockDeviceMappings
    value: /dev/sdh=vol-XXXXX

但是不幸的是，我收到以下错误消息:参数snapshotId的(vol-XXXX)无效.应为:'snap -...'."

But unfortunately I get the following error "(vol-XXXX) for parameter snapshotId is invalid. Expected: 'snap-...'."

很明显，此方法仅允许快照.任何人都可以提出修复或替代方法的建议.

Clearly this method only allows snapshots. Can anyone suggest a fix or an alternative method.

推荐答案

我找到了一个解决方案.可以通过删除"sleep 10"来改善它，但是不幸的是，由于 aws ec2 attach-volume 是异步的，并且在进行连接之前立即返回，因此需要这样做.

I have found a solution. It could be improved by removing the "sleep 10" but unfortunately that required because aws ec2 attach-volume is async and returns straight away before the attachment takes place.

container_commands:
  01mount:
    command: "aws ec2 attach-volume --volume-id vol-XXXXXX --instance-id $(curl -s http://169.254.169.254/latest/meta-data/instance-id) --device /dev/sdh"
    ignoreErrors: true
  02wait:
    command: "sleep 10"
  03mkdir:
    command: "mkdir /data"
    test: "[ ! -d /data ]"
  04mount:
    command: "mount /dev/sdh /data"
    test: "! mountpoint -q /dev/sdh"

注意.理想情况下，它将在 commands 部分而不是 container_commands 中运行，但是环境变量未及时设置.

Note. Ideally it would be run in commands section not container_commands but the environment variables are not set in time.

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