This opening post will give an overview and demo of Oracle Cloud Infrastructure (OCI). Oracle Cloud offers fast and scaleable compute and storage resources, combined with enterprise-grade private virtual cloud networks. Oracle Cloud offers a range of flexible operating models including traditional Virtual Machine (VM) instances, container infrastructure, databases on demand, and dedicated hardware through bare metal servers and Bring Your Own Hypervisor (BYOH).
You can sign up for a free trial account with $300 credit here. When you sign up for an Oracle account you are creating a tenant. Resources inside a tenant can be organised and isolated using compartments, separate projects, billing, and access policies are some use case examples.
Oracle Cloud Infrastructure is deployed in regions. Regions are localised geographical areas, each containing at least 3 Availability Domains. An Availability Domain is a fault-independent data centre with power, thermal, and network isolation. A Virtual Cloud Network (VCN) is deployed per region across multiple Availability Domains, thereby allowing us to build high availability and fault tolerance into our cloud design. Virtual Cloud Networks are software defined versions of traditional on-premise networks running in the cloud, containing subnets, route tables, and internet gateways. VCNs can be connected together using VCN Peering, and connected to a private network using Fast Connect or VPN with the use of a Dynamic Routing Gateway (DRG).
The demo below creates a VCN and VM instances in the second generation of Oracle Cloud for lab purposes. Before deploying your own environment you should review all the above linked documentation and plan your cloud strategy including IP addressing, DNS, authentication, access control, billing, governance, network connectivity and security.
Log into the Oracle Cloud portal here, the home dash board is displayed.
You’ll need a subscription to get into the second generation Oracle Cloud Infrastructure portal. Under Compute select Open Service Console.
The region can be selected from the drop-down location pin icon in the top right corner, in this example the region is set to eu-frankfurt-1. Select Manage Regions to subscribe to new regions if required. Use the top left Menu button to display the various options. The first step in any deployment is to build the VCN, select Networking and Virtual Cloud Networks.
Make sure you are in the correct compartment in the left hand column and click Create Virtual Cloud Network. Select the compartment and enter a name, in this example I am going to create the Virtual Cloud Network only which will allow me to manually define resources such as the CIDR block, internet gateway, subnets, and routes. The DNS label is auto-populated.
The newly created VCN is displayed, all objects are orange during provisioning and green when available.
Once the VCN is available click the VCN name to display more options.
Use the options in the Resources menu to view and create resources assigned to the VCN. In this example first we’ll create the Internet Gateway.
Next we can create a subnet, in this example I have created a public subnet that I will later attach a VM instance to.
We also need to add a route table or new routes into the default route table.
The final step to allow connectivity in and out of our new subnet(s) is to define ingress and egress rules using security lists. Again you can either add rules to the default section or split out environments into additional security lists.
Define the source and destination types and port ranges to allow access. In this example we are allowing in port 22 to test SSH connectivity for a VM instance.
Now that we have a fully functioning software defined network we can deploy a VM instance. From the left hand Menu drop-down select Compute, Instances. Use the Create Instance wizard to deploy a virtual machine or bare metal machine.
In this example I have deployed a virtual machine using the Oracle Linux 7.5 image and VM.Standard2.1 shape (1 OCPU, 15 GB RAM). The machine is deployed to Availability Domain 1 in the Frankfurt region and has been assigned the public subnet in the VCN we created earlier. I used PUTTYgen to generate public and private key pairs for SSH access.
Once deployed the instance turns green.
Click the instance name to view further details or terminate, when removing you have the option to keep or delete the attached boot volume.
Additional block volumes can be added to instances. Block volumes can be created under Block Storage, Block Volumes.
For object based storage we can create buckets under Object Storage, Object Storage.
Buckets can be used to store objects with public or private visibility, pre-auth requests can also be added for short term access.