Instance metadata

Instance metadata refers to the configuration information related to KEC and EPC instances, such as NICs, instance names, and IP addresses. It can be used to configure and manage running instances.

This topic describes how to query instance metadata in Linux operating systems and explains each item of the metadata.

Query instance metadata

1. Connect to the instance.

2. Access the root directory of the metadata.

   curl http://global.cloudinit.sdns.ksyun.com:8775/latest/meta-data/

3. Add metadata item names to URLs to obtain detailed information about the corresponding metadata. Common metadata items:

   • Obtain the instance ID.

     curl http://global.cloudinit.sdns.ksyun.com:8775/latest/meta-data/instance-id

   • Obtain the operating system name of the instance.

     curl http://global.cloudinit.sdns.ksyun.com:8775/latest/meta-data/hostname

   • Obtain the instance type, such as KEC or EPC.

     curl http://global.cloudinit.sdns.ksyun.com:8775/latest/meta-data/host-type

   • Obtain the image ID used by the instance.

     curl http://global.cloudinit.sdns.ksyun.com:8775/latest/meta-data/image-id

   • Obtain the NIC ID used by the instance.

     curl http://global.cloudinit.sdns.ksyun.com:8775/latest/meta-data/mac

4. (Optional) View custom data. The command is only supported by KEC instances.

   curl http://global.cloudinit.sdns.ksyun.com:8775/latest/user-data

Description of metadata