Book Image

Oracle Cloud Infrastructure for Solutions Architects

By : Prasenjit Sarkar
Book Image

Oracle Cloud Infrastructure for Solutions Architects

By: Prasenjit Sarkar

Overview of this book

Oracle Cloud Infrastructure (OCI) is a set of complementary cloud services that enables you to build and run a wide range of applications and services in a highly available hosted environment. This book is a fast-paced practical guide that will help you develop the capabilities to leverage OCI services and effectively manage your cloud infrastructure. Oracle Cloud Infrastructure for Solutions Architects begins by helping you get to grips with the fundamentals of Oracle Cloud Infrastructure, and moves on to cover the building blocks of the layers of Infrastructure as a Service (IaaS), such as Identity and Access Management (IAM), compute, storage, network, and database. As you advance, you’ll delve into the development aspects of OCI, where you’ll learn to build cloud-native applications and perform operations on OCI resources as well as use the CLI, API, and SDK. Finally, you’ll explore the capabilities of building an Oracle hybrid cloud infrastructure. By the end of this book, you’ll have learned how to leverage the OCI and gained a solid understanding of the persona of an architect as well as a developer’s perspective.
Table of Contents (15 chapters)
1
Section 1: Core Concepts of Oracle Cloud Infrastructure
Free Chapter
2
Chapter 1: Introduction to Oracle Cloud Infrastructure
7
Section 2: Understanding the Additional Layers of Oracle Cloud Infrastructure

Connecting to instances using an instance console connection

When you're working with deploying compute instances, you can get in situations where the compute has failed to boot because of a misconfiguration in the OS, or there's a problem with a specific driver that could not load during boot. When this happens, your instance will be stuck and you won't have network access.

So, with instance console connections, you can access your instance in the same way you would using a serial console. You will be able to access an instance even if you don't have network connectivity and then gain access to the instance screen. From there, you can, for example, access the root filesystem to fix a misconfigured file or even replace your SSH key.

OCI offers two ways to connect to console connections: using SSH or using VNC.

Using this console connection, you can do the following:

  • You can either add an SSH key or reset the SSH keys for the default opc user.
  • ...