使用boto从AWS实例获取标签 [英] Obtaining tags from AWS instances with boto

问题描述

我正在尝试使用Python的boto库从我的AWS账户中的实例获取标签.

I'm trying to obtain tags from instances in my AWS account using Python's boto library.

虽然此代码段可以正常运行，但可以带上所有标签:

While this snippet works correctly bringing all tags:

    tags = e.get_all_tags()
    for tag in tags:
        print tag.name, tag.value

(e是EC2连接)

当我从各个实例中请求标签时，

When I request tags from individual instances,

    print vm.__dict__['tags']

或

    print vm.tags

我得到一个空列表(vm实际上是一个实例类).

I'm getting an empty list (vm is actually an instance class).

以下代码:

    vm.__dict__['tags']['Name']

当然会导致:

KeyError: 'Name'

我的代码一直工作到昨天，突然之间我无法从实例中获取标签.

My code was working until yesterday and suddenly I'm not able to get the tags from an instance.

有人知道AWS API是否有问题吗?

Does anybody know whether there is a problem with AWS API?

推荐答案

访问它之前，必须确保'Name'标记存在.试试这个:

You have to be sure that the 'Name' tag exists before accessing it. Try this:

import boto.ec2
conn=boto.ec2.connect_to_region("eu-west-1")
reservations = conn.get_all_instances()
for res in reservations:
    for inst in res.instances:
        if 'Name' in inst.tags:
            print "%s (%s) [%s]" % (inst.tags['Name'], inst.id, inst.state)
        else:
            print "%s [%s]" % (inst.id, inst.state)

将打印:

i-4e444444 [stopped]
Amazon Linux (i-4e333333) [running]

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