oam/knowledge base/oracle cloud.md

Oracle Cloud

Table of contents

1. Concepts
   1. Compartments
   2. Networking
      1. Access to the Internet
2. Further readings
3. Sources

Concepts

Compartments

Compartments are tenancy-wide and extend across regions. They can also be nested to create hierarchies up to 6 levels deep.

After creating a compartment, you need to write at least one policy for it; until then, no one can access it except administrators or users who have permissions set at the tenancy level. When creating sub-compartments, they inherit access permissions from compartments higher up their hierarchy.

Before deleting a compartment, all its resources must have been moved, deleted or terminated, including any policies attached to the compartment itself.

Networking

Access to the Internet

Resource	Used for	Free-tier limit
Internet Gateway	public resources that need to be reached from the internet	?
NAT Gateway	resources that need to reach the internet but are not reachable from the internet	0 (not available)
Bastion	resources that require Secure Shell (SSH) access but otherwise are not reachable from the internet	5

Further readings

• oci-cli
• Compute images
• Connect to private compute instances using OCI Bastion Service

Sources

All the references in the [further readings] section, plus the following:

• Required keys and OCIDs