We can retrieve Instance Metadata like OCID, Display Name, Region, Availability Domain, Fault domain, Compartment OCID, Instance shape, Subnet CIDR, etc in three ways.
Using oci-metadata
- With Linux7, The oci-metadata utility is used to display or update metadata for a compute instance running in the Oracle Cloud Infrastructure.
- “oci-metadata” utility is provided by the rpm oci-utils which is installed by default on all the Oracle provided Linux images.
#oci-metadata Instance details: Display Name: tech Region: uk-london-1 Canonical Region Name: us-ashburn-1 Availability Domain: DSdu:US-ASHBURN-1-AD-3 Fault domain: FAULT-DOMAIN-1 OCID: ocid1.instance.oc1.us-ashburn-1.abwgiljrfu6w22gihsxj4h6m6ybabv3mb23edmqhj4kamvv2sdodk7voplfq Compartment OCID: ocid1.compartment.oc1..aaaaaaaamlbsubwajqyvzyrqas6e6sbl3iqp55u6yloyxmg4muaks5xvxbuq Instance shape: VM.Standard2.1 Image ID: ocid1.image.oc1.uk-london-1.aaaaaaaavrftjg3fa2uw5ndqin3tjme3jc4vpxnsysoxetlswsr6aqlfwurq Created at: 1563931505006 state: Running agentConfig: monitoringDisabled: False Instance Metadata: ssh_authorized_keys: ssh-rsa xxxxxxxx rsa-key-20180707 Networking details: VNIC OCID: ocid1.vnic.oc1.us-ashburn-1.abwgiljr2hzgelbhzjf3hvo6bztwju4wm6xrphiu3ojmtfpcks5caut4763q VLAN Tag: 1359 Private IP address: x.x.x.x MAC address: xx:xx:xx:xx:xx:xx Subnet CIDR block: x.x.x.x/24
Using Console
You can log in to Oracle Cloud Console. Go to the Server and you can see all the details
Using Curl from Metadata Service
- Each Server runs a metadata service. and is an HTTP endpoint listening on 169.254.169.254.
- We can find the metadata using the curl command below on all the OCI servers
curl -L http://169.254.169.254/opc/v1/instance/
The IP address 169.254.169.254 is a link-local address and is valid only from the instance.
if the v2 version is enabled, we can use the below command
curl -H "Authorization: Bearer Oracle" -L http://169.254.169.254/opc/v2/instance/
