ORACLE CLOUD INFRASTRUCTURE

IT by javier mugueta5 June, 20195 June, 2019

Shared Disk Seen by Pods Deployed in two Independent OKE Clusters across two Cloud Regions | Remote Network Peering

In this episode we are creating 2 independent OKE clusters, one in Frankfurt and the other in Phoenix, and then we will create a File System in Frankfurt (kind of NFS server) that will act as repository for a shared persistent volume reachable by all the pods of a deployment deployed to both clusters. Remote […]

IT by javier mugueta13 May, 201914 May, 2019

Load Balancig, High Availability and Fail-Over of a Micro-Service Deployed in two Separated Kubernetes Clusters: one running in Oracle Kubernetes Engine (OKE) and the other in Google Kubernetes Engine (GKE)

Oracle Cloud Edge Services Oracle Cloud Infrastructure provides Edge Services, is a group of services related with DNS, Health Checks, Traffic Management and WAF (Web Application Firewall). In this episode we are utilising DNS Zone Management, Traffic Management Steering Policies and Health Checks for load balancing and fail-over of a micro-service running in two different […]

IT by javier mugueta1 May, 20191 May, 2019

Deploying in Oracle Kubernetes (OKE) a Custom Node.js Web Application Integrated with Identity Cloud Service for Unique Single Sign On (SSO) User Experience

In this post we are deploying a custom Node.js web application in Oracle Kubernetes Engine (OKE). What we want to show is how to configure the custom web application in order to have a unique Single Sing On experience. First part Follow this tutorial here explaining how to enable SSO to the web app running locally Second […]

IT by javier mugueta27 April, 201927 April, 2019

How to ssh to OKE (k8s) Private Node (worker compute node) via Jump Box (Bastion Server)

In OKE typically you create, for redundancy and high availability reasons, a k8s cluster in 5 or more subnets: 2 are public and, in there, is where the public load balancer is deployed, for example one in AD1 and the other in AD3 3 or more are private, and, in there, is where the worker […]

IT by javier mugueta27 April, 201927 April, 2019

Connecting to OCI DB System with SQLDeveloper via Bastion Box

Recipe for creating a secure connection between sqlDeveloper in our local machine and an Oracle Cloud Infra DB System created in a private subnet of a Virtual Cloud Network network not opened to internet Steps Create a new DB System and grab the private IP of the database system node Create a compute VM with […]

IT by javier mugueta21 April, 201921 April, 2019

Creating Route Rule for Oracle OCI VCN Remote Peering : InvalidParameter – routeRules[0].networkEntityId may not be null

Problem: When creating a route rule for VCN remote peering between 2 Virtual Cloud Networks in different regions in Oracle OCI using the web console, the UI does not provide a way for selecting the DRG: Solution: Create the route rule with the CLI as follows: oci network route-table create –compartment-id xxx –vcn-id yyy –route-rules […]

IT by javier mugueta13 April, 201920 April, 2019

Shared Disk for your Pods: PersistentVolumes for Oracle Kubernetes Engine (OKE) Implemented as NFS File Storage in Oracle Cloud Infrastructure (OCI)

When you deploy in k8s a pod depending in persistent volume attached to block storage (for example this post), the volume created is mounted on a specific node. If that node fails or is stopped, the pods running on it fail when trying to be created in other node according to the replication policies they […]