![Example of OCI Function as Resource Principal [enabled] to invoke OCI services](https://technology.amis.nl/wp-content/uploads/2020/06/image-18-768x285.png)
Resource Principal is an OCI resource that through its membership of a Dynamic Group and permissions granted through policies to the Dynamic Group is given access to OCI resources and services. Examples of Resource Principals are Function and API Gateway. A Function that is resource principal enabled can for example […]
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Reading Query Parameters in GET requests to Project Fn Functions (and Oracle Functions as a Service)
TLDR: query parameters can be retrieved from the Fn-Http-Request-Url header in the ctx parameter passed by Fn to the Node function handling the request; using url.parse() on that header retrieves the url query parameters Project Fn is an open source container native serverless framework. Project Fn provides a runtime […]
The Six-part REAL Oracle Cloud platform Webinar Series – Cloud Native Live Demo and Hands-On Oracle Developer Meetup sessions – kicking off June 10th 2020
Attend this series of six live webinars to get going with cloud native application development on the Oracle Cloud platform, created and presented by REAL specialists. The Red Expert Alliance (aka REAL) is a network of Oracle partners on four continents that have joined forces to share knowledge and experience […]
Migrating an old (10.2.0.4) database to Oracle Cloud with minimal downtime
Unlike most of our posts this post will contain almost no code or examples. But it hopefully will help somebody who ends up to be in the same situation we landed on: migrating data from very old versions to a new environment. Recently we were tasked with the migration of […]
Mapping Azure and Oracle Cloud Infrastructure core concepts – Part One
All major public clouds are organized in similar ways. However, terms used for certain similar constructs can be (quite) different, or the same terms are used for quite different constructs. This article attempts to outline some of the most relevant concepts for both Azure and Oracle Cloud Infrastructure and to […]
(Many ways) How to upload files into Oracle Cloud Infrastructure – Cloud Shell
Oracle Cloud Infrastructure Cloud Shell is VM that runs inside OCI -to be used for manipulating OCI resources using various means, including OCI CLI, Terraform and Ansible. We may want to be able to get files into Cloud Shell – scripts, source code, Infrastructure as Code and more. There are […]
Install SQLcl on Oracle Cloud Infrastructure Cloud Shell and make it work against an Autonomous Database
Cloud Shell on Oracle Cloud Infrastructure is a versatile management and development environment to access and manage Oracle Cloud Infrastructure resources. Cloud Shell comes with many tools and runtime out of the box (or rather inside the box) including OCI CLI, Java and SQL*Plus. However, the Oracle SQL Developer Command […]
Connecting SQL*Plus in Cloud Shell to an Autonomous Database
Objective of this article: connect SQL*Plus in Cloud Shell to an Autonomous Database instance (in a free tier – in the same or a different cloud tenancy) The starting situation: I have an autonomous database instance running somewhere in Oracle Cloud Infrastructure. I have Cloud Shell as a versatile management […]
Access OCI OKE Kubernetes Dashboard locally through Cloud Shell Proxy and ngrok
This article tells you how to access the Kubernetes Dashboard on top of an Oracle Cloud Infrastructure OKE Cluster Instance from a browser – without locally installing kubectl. This trick uses OCI Cloud Shell to run kubectl to proxy to the dashboard application running inside the K8S Cluster and it […]
Oracle Cloud Infrastructure Cloud Shell – integrated OCI CLI, kubectl, terraform, SQL Plus, Docker and Maven
Cloud Shell in Oracle Cloud Infrastructure is a free browser based command line tool for various types of interactions within your OCI Tenancy. When you start Cloud Shell, a command line is opened in your browser. You are in a Linux environment (Oracle Linux 7.7) that runs within the OCI […]
Getting started with NoSQL Database Service on Oracle Cloud Infrastructure
This morning I discovered a new entry in the menu on my Oracle Cloud Infrastructure Tenancy (on Ashburn, USA): the NoSQL Database service had been added overnight. The service offers a key-(schema-less) document store. It also supports ACID transactions, SQL on JSON documents, joins across tables, structured tables and if […]
Very first steps in Oracle Cloud Infrastructure as Code with Terraform
Resources in Oracle Cloud Infrastructure can be managed through the console – the browser based UI. That works great but requires manual steps – no automation – that take time and easily go wrong (and become extremely boring over time). Additionally, it is a rather individualistic way of working that […]
Secure browsing using a local SOCKS proxy server (on desktop or mobile) and an always free OCI compute instance as SSH server
Oracle provides several services as ‘always free’. In contrast to Azure and Amazon, these include compute instances which remain ‘forever’ free to use. Although there are some limitations on CPU, disk, network resources, these instances are ideal to use as a remote SSH server and with a little effort a […]
Welcoming the Data Catalog Service on Oracle Cloud Infrastructure
Data is really important to any organization. Data tells us what the organization is doing, and where it is going. And how it can improve quality and efficiency of processes. Achieve better results. Data can be one of the key products an organization delivers to its customers. I am sure […]
Run Always Free Docker Container on Oracle Cloud Infrastructure
In this article, I want to show how you can very quickly run a Docker container for free on Oracle Cloud Infrastructure – using a VM in the Always Free Tier of OCI. As an example, I will run an NGINX container image and access that from a client over […]
Oracle Cloud Infrastructure Resource Monitoring – Alarm triggers Notification when Metrics satisfy Condition
Oracle Cloud Infrastructure gathers metrics from all OCI resources. These metrics can be visualized and analyzed with the Metrics Explorer. And Alarms can be defined with rules evaluating the metrics that publish to a Notification Topic to signal a situation of interest. Subscriptions can be defined on these Notification Topics, […]
Somewhat Stateful Serverless Functions on Oracle Cloud Infrastructure – Implementing a DIY Cache
We call them serverless and we consider them stateless. Functions on Oracle Cloud Infrastructure (and on other cloud platforms). Of course they are neither. They run on servers. And they can carry some state, though largely opportunistic and not reliably. Functions on OCI run inside a container. The container is […]
Asynchronous Function Calls through API Gateway on Oracle Cloud Infrastructure
In a recent article, I described how serverless Functions on Oracle Cloud Infrastructure can invoke each other: synchronously and asynchronously. Although asynchronous calls are the desired state, such calls currently are possible only with quite a bit of hassle – using a Stream for queuing asynchronous requests and a Listener […]
OCI Serverless Functions invoking other Functions – synchronous and asynchronously through API Gateway and Streaming
OCI allows for cloud native application development, using facilities such as serverless functions, a light weight API gateway, a streaming service for asynchronous communication based on event messaging and built-in monitoring. In previous articles, I have gone over several aspects of serverless functions and API Gateways to create and expose […]
Using OCI Monitoring Healthchecks to Schedule execution of Serverless Functions on Oracle Cloud Infrastructure
Execution of scheduled jobs based on a time schedule is a frequent requirement. Jobs on Oracle Cloud Infrastructure are often implemented using cloud native, serverless Functions – that can be exposed through (public) HTTP endpoints on an API Gateway. I recently published an article describing how execution of functions can […]