This post covered the latest changes in Compute in Oracle Cloud Infrastructure (OCI) as of December 2018. If you are new to Cloud, then I would suggest you check our previous post on Cloud Service Model (SaaS PaaS IaaS )
If you are new to Oracle Cloud Infrastructure (OCI), then check our previous post on Oracle Cloud Infrastructure (OCI): Region, AD, FD, Tenancy, Compartment, VCN, IAM, Storage Service
Things You Should Know About Compute
Overview of the Compute Service
Oracle Cloud Infrastructure Compute lets you provision and manages to compute hosts, known as instances. You can launch instances as needed to meet your compute and application requirements. After you launch an instance, you can access it securely from your computer, restart it, attach and detach volumes, and terminate it when you’re done with it. Any changes made to the instance’s local drives are lost when you terminate it. Any saved changes to volumes attached to the instance are retained.
To Know more about Compute Services, Check our previous post on Oracle Cloud Infrastructure (OCI) | Compute CPU & Memory
OCI Compute New Features: DEC 2018
Oracle Cloud Infrastructure (OCI) Compute Console design changes
The Console is transformed into a new design & navigation of some features have been changed.
- To Change the image source, Click on Change Image Source, you will see many new options
An image is a template of a virtual hard drive. The image determines the operating system and other software for an instance.
You will see different Images:
- Platform Images: In this, You will see the Pre Built, Images for Oracle Cloud Infrastructure, like Canonical Ubuntu 18.04, CentOS 7, Oracle Linux 7.6, Windows Server 2016 Standard
- Oracle Images: In this, you will get the Oracle pre-built images. like, Oracle CCE Images OKE OL 7.5, Oracle E-Business Suite 12.2.7 Vision Install Image, Oracle E-Business Suite Cloud Manager 18.3.1.1 Oracle EBS, Oracle Linux KVM Image Oracle Linux, PeopleSoft Cloud Manager Image – OCI Oracle PeopleTools, PeopleSoft Linux Image for Cloud Manager – OCI. Oracle-provided images provide you with the ability to run custom scripts or provide custom metadata when the instance launches.
- Partner Images: These are Trusted third-party images published by Oracle partners. like, Clear Linux OS, DokuWiki Certified by Bitnami, Fortinet FortiAnalyzer, Fortinet FortiGate, Fortinet FortiManager, Jenkins, Redmine
- Custom Images: You can create a custom image of a Bare Metal instance’s boot disk and use it to launch other instances. Instances you launch from your image include the customizations, configuration, and software installed when you created the image.
- Boot Volumes: When you launch an instance you can specify whether to use the selected image’s default boot volume size, or you can specify a custom size up to 32 TB. This capability is available for the following image source options:
- Oracle-provided image
- Custom image
- Image OCID
- Image OCID: Create an instance using a specific version of an image using the image OCID
Next New Change is in Shapes Under Instance Type:
Oracle Cloud Infrastructure offered both Bare Metal and Virtual Machine instances:
- Bare Metal – A bare metal computes instance gives you dedicated physical server access for highest performance and strong isolation.
- Virtual Machine – A Virtual Machine (VM) is an independent computing environment that runs on top of physical bare-metal hardware. The virtualization makes it possible to run multiple VMs that are isolated from each other. VMs are ideal for running applications that do not require the performance and resources (CPU, memory, network bandwidth, storage) of an entire physical machine.
Note: For Free Cloud Account you don’t have the option to choose Bare Metal Shape
For Virtual Machine you have only two options for Shape:
- VM Standard2.1
- VMStandard2.2
Changes in VCN (Virtual Cloud Network)
Earlier, you have to create the VCN, but as of new changes, System will automatically create a new virtual cloud network in this compartment with access to the internet. You can set up firewall rules and security lists to control ingress and egress traffic to your instances.
Managing Compute Instances
Oracle Cloud Infrastructure lets you simplify management of your Compute instances using resources such as Instance Configurations and Instance Pools.
Instance Configurations: When you will be creating Compute Instance you can use Instance Configuration to define the settings, as a part of an Instance pool including details such as the base image, shape, and metadata. You can also specify the associated resources for the instance, such as block volume attachments and network configuration. You create an instance configuration from an existing Compute instance
Basically, it collects all the data. It will convert your Instance in a template & create a configuration file.
Instance Pools: Instance pools give you the ability to provision and create multiple Compute instances based off of the same instance configuration, within the same region. They also enable integration with other services, such as the Load Balancing service and IAM service, making it easier to manage groups of instances. You can create an instance pool from the instance configuration details page or directly from the Instance Pools page, both methods require an existing instance configuration.
Note: This will help in creating multiple instances in one go when you have the requirement of creating an instance of the same configuration.
In one shot, it will be going to create 4 instances, it will provision 4 instance & create multiple compute instance which is based on the same configuration which we have used it & it will be created in the same region. You can able to create more than one instance in one shot.
Service Limits
When you create an account & sign up for Oracle Cloud Infrastructure, a set of service limits are configured for your tenancy. The service limit is the allowance for the required resource. For example, your tenancy is allowed a maximum number of compute instances per Availability Domain. You can request to have a service limit raised.
To navigate to the service limits, go to the Menu Section & in the last under Administration, you will see the tenancy details, in this, you will get the Service Limits details.
You Can Also Request To Increase your Service Limits as per your requirements
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Related/Further Readings
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- Oracle Cloud Infrastructure Availability Domains & Fault Domains
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- Oracle Cloud Infrastructure (OCI) Architect: Certification Exam 1Z0-932: Step by Step Activity Guides To Clear Exam
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