OCI


Impact of Azure-Oracle OCI interconnect on a multi-cloud solution 3

Introduction

Oracle and Microsoft announced in June 2019 a cloud interoperability partnership which enables workloads across Microsoft Azure and Oracle Cloud. By creating a first joint multi-cloud solution, the software giants can each continue to provide the best of their services. At the same time customers do not need to decide which vendor they opt-out when moving their on-premises constructs.

Being myself an Oracle Database Administrator, this article aims to check what is the impact of distributing resources in multiple clouds, with databases remaining on Oracle Cloud Infrastructure.

It is not aim of the article to discuss the costs of resources on any of the clouds.

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SSH tips & tricks

These days I’ve been playing with Oracle Cloud and Azure. It is best practice to have a bastion or jumphost server with public IP address and all the rest on private networks, only accessible internally.

Also, there is no use of passwords and only the ssh public key of the user is located on the servers. Usually this is what we try to do:

To start with, I use MobaXterm to access my servers. There I’ve configured my SSH private keys to be loaded:

MobaXterm configuration menu for SSH

Connect to jumphost server and take SSH key

Use the -A option when connecting:

ssh -A opc@bastion-server

Then you can do ssh to the next server in the private subnet without password. Example of not using and using this option:

Connect to private server via jumphost directly

For this we use both -A and -J options:

ssh -A -J opc@bastion-server opc@private-server

SCP directly to private server via JumpHost

Here we have to use a ProxyJump option of scp in this case:

scp -o 'ProxyJump opc@bastion-server' file.zip opc@private-server:~/