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49 lines
2.2 KiB
Markdown
49 lines
2.2 KiB
Markdown
# Oracle Cloud
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1. [Concepts](#concepts)
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1. [Compartments](#compartments)
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2. [Networking](#networking)
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1. [Access to the Internet](#access-to-the-internet)
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2. [Further readings](#further-readings)
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3. [Sources](#sources)
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## Concepts
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### Compartments
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Compartments are tenancy-wide and extend across regions. They can also be nested to create hierarchies up to 6 levels deep.
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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.
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Before deleting a compartment, all its resources must have been moved, deleted or terminated, including any policies attached to the compartment itself.
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### Networking
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#### Access to the Internet
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| Resource | Used for | Free-tier limit |
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| ---------------- | -------------------------------------------------------------------------------------------------- | ----------------- |
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| Internet Gateway | **public** resources that need to **be** reach**ed** from the internet | ? |
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| NAT Gateway | resources that **need to reach** the internet but **are not reachable from** the internet | 0 (not available) |
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| Bastion | resources that require Secure Shell (SSH) access but otherwise are not reachable from the internet | 5 |
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## Further readings
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- [oci-cli]
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- [Compute images]
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- [Connect to private compute instances using OCI Bastion Service]
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## Sources
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- [Required keys and OCIDs]
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<!-- oracle cloud's documentation -->
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[compute images]: https://docs.oracle.com/en-us/iaas/images/
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[required keys and ocids]: https://docs.oracle.com/en-us/iaas/Content/API/Concepts/apisigningkey.htm
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<!-- internal references -->
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[oci-cli]: ./oci-cli.md
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<!-- external references -->
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[connect to private compute instances using oci bastion service]: https://medium.com/@harjulthakkar/connect-to-private-compute-instance-using-oci-bastion-service-ca96a3ceea49
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