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以下示例提供了可以在 Linux 实例上使用的命令。
例 获取实例元数据的可用版本
此示例可以获取实例元数据的可用版本。当有新的实例元数据类别发布时，每个版本都引用一个实例元数据构建。如果您有依赖于以前版本中所存在的结构和信息的脚本，则您可使用早期版本。
IMDSv2
[ec2-user ~]$ TOKEN=`curl -X PUT "http://169.254.169.254/latest/api/token" -H "X-aws-ec2-metadata-token-ttl-seconds: 21600"` && curl -H "X-aws-ec2-metadata-token: $TOKEN" -v http://169.254.169.254/
% Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed
100 56 100 56 0 0 3733 0 --:--:-- --:--:-- --:--:-- 3733
* Trying 169.254.169.254...
* TCP_NODELAY set
* Connected to 169.254.169.254 (169.254.169.254) port 80 (#0)
> GET / HTTP/1.1
> Host: 169.254.169.254
> User-Agent: curl/7.61.1
> Accept: */*
> X-aws-ec2-metadata-token: MDAXcxNFLbAwJIYx8KzgNckcHTdxT4Tt69TzpKExlXKTULHIQnjEtXvD
>
* HTTP 1.0, assume close after body
< HTTP/1.0 200 OK
< Date: Mon, 12 Sep 2022 21:58:03 GMT
< Content-Length: 274
< Content-Type: text/plain
< Server: EC2ws
<
1.0
2007-01-19
2007-03-01
2007-08-29
2007-10-10
2007-12-15
2008-02-01
2008-09-01
2009-04-04
2011-01-01
2011-05-01
2012-01-12
2014-02-25
2014-11-05
2015-10-20
2016-04-19
2016-06-30
2016-09-02
2018-03-28
2018-08-17
2018-09-24
2019-10-01
2020-10-27
2021-01-03
2021-03-23
* Closing connection 0
IMDSv1
[ec2-user ~]$ curl http://169.254.169.254/
1.0
2007-01-19
2007-03-01
2007-08-29
2007-10-10
2007-12-15
2008-02-01
2008-09-01
2009-04-04
2011-01-01
2011-05-01
2012-01-12
2014-02-25
2014-11-05
2015-10-20
2016-04-19
2016-06-30
2016-09-02
2018-03-28
2018-08-17
2018-09-24
2019-10-01
2020-10-27
2021-01-03
2021-03-23
latest
例 获取顶级元数据项
此示例获得顶级元数据项目。有关顶级元数据项的信息，请参阅本指南中的支持的实例元数据和用户数据。
IMDSv2
[ec2-user ~]$ TOKEN=`curl -X PUT "http://169.254.169.254/latest/api/token" -H "X-aws-ec2-metadata-token-ttl-seconds: 21600"` && curl -H "X-aws-ec2-metadata-token: $TOKEN" -v http://169.254.169.254/latest/meta-data/
ami-id
hostname
instance-id
instance-type
local-hostname
local-ipv4
mac
network/
reservation-id
security-groups
IMDSv1
[ec2-user ~]$ curl http://169.254.169.254/latest/meta-data/
ami-id
hostname
instance-id
instance-type
local-hostname
local-ipv4
mac
network/
reservation-id
security-groups
例 获取顶级元数据的值
以下示例获取在前面的示例中获取的某些顶级元数据项的值。这些 IMDSv2 请求使用在前面的示例命令中创建的存储令牌，前提是该令牌尚未过期。
ami‐id IMDSv2
curl -H "X-aws-ec2-metadata-token: $TOKEN" -v http://169.254.169.254/latest/meta-data/ami-id ami-0abcdef1234567890
ami-id IMDSv1
curl http://169.254.169.254/latest/meta-data/ami-id ami-0abcdef1234567890
reservation-id IMDSv2
[ec2-user ~]$ curl -H "X-aws-ec2-metadata-token: $TOKEN" -v http://169.254.169.254/latest/meta-data/reservation-id r-0efghijk987654321
reservation-id IMDSv1
[ec2-user ~]$ curl http://169.254.169.254/latest/meta-data/reservation-id \
r-0efghijk987654321
local-hostname IMDSv2
[ec2-user ~]$ curl -H "X-aws-ec2-metadata-token: $TOKEN" -v http://169.254.169.254/latest/meta-data/local-hostname ip-00-000-00-00
local-hostname IMDSv1
[ec2-user ~]$ curl http://169.254.169.254/latest/meta-data/local-hostname ip-00-000-00-00
